Expand
Contents
- The climate of Idaho Falls
- The best time to visit Idaho Falls
- The worst time to visit Idaho Falls
- Spring weather in Idaho Falls
- Summer weather in Idaho Falls
- Autumn weather in Idaho Falls
- Winter weather in Idaho Falls
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
An eye-catching shot of the Snake River, Idaho Falls, with a view of the iconic Idaho Falls Temple in the back
The climate of Idaho Falls
Positioned in the heart of the United States, Idaho Falls finds itself abiding by the semantic particulars of a BSk - mid-latitude steppe - according to the Köppen climate classification. This classification holds considerable sway over the seasonal disparities in weather elements. Thus, Idaho Falls experiences significant variations across different periods of the year.
Analyzing the weather parameters clearly projects a notable climate pattern. The temperatures oscillate from a high of 86.2°F (30.1°C) in July to a low of 14.2°F (-9.9°C) in January. Notably, both humidity and cloud cover are spread unevenly throughout the year, the highest being 90% and 51% respectively, in January, demonstrating the cold and cloudy disposition of the winter months. On the other hand, the regions of low humidity from 35%-36% neatly coincide with the low cloud cover 11% from July to August displaying a predominantly sunny climate during those months.
Rainfall exhibits a peculiar trend, with the maximum recorded precipitation of 0.83" (21mm) witnessed twice - from May to June and again in September. Similarly, the days bearing rainfall ranging from 10.7 and 8.1 emerge during the same months. Interestingly, the seasons with the least amount of rainfall surround these months from July to August, indicating a virtually unbroken sunny spell.
Analyzing the weather parameters clearly projects a notable climate pattern. The temperatures oscillate from a high of 86.2°F (30.1°C) in July to a low of 14.2°F (-9.9°C) in January. Notably, both humidity and cloud cover are spread unevenly throughout the year, the highest being 90% and 51% respectively, in January, demonstrating the cold and cloudy disposition of the winter months. On the other hand, the regions of low humidity from 35%-36% neatly coincide with the low cloud cover 11% from July to August displaying a predominantly sunny climate during those months.
Rainfall exhibits a peculiar trend, with the maximum recorded precipitation of 0.83" (21mm) witnessed twice - from May to June and again in September. Similarly, the days bearing rainfall ranging from 10.7 and 8.1 emerge during the same months. Interestingly, the seasons with the least amount of rainfall surround these months from July to August, indicating a virtually unbroken sunny spell.
The best time to visit Idaho Falls
The ideal time to explore Idaho Falls is during the Summer months from June to August. The rationale for this choice lies in the favorable combination of weather parameters such as temperature, sunshine, rainfall, and cloud cover. The temperatures during this period fall between 75°F (23.9°C) and 86.2°F (30.1°C), crafting a warm, welcoming atmosphere. Concurrently, these months boast a consistent 11.7 to 11.8 sunshine hours and the cloud cover remains svelte at 11%.
Moreover, this period also coincides with the lowest rainfall of the entire year - 0.35" (9mm) in July. With an average of merely 6.6 rainfall days, visitors can anticipate largely dry and clear days. These factors, combined with the excessive daylight hours in the day - making up almost two thirds of the day - contribute to a visitor friendly environment.
Moreover, this period also coincides with the lowest rainfall of the entire year - 0.35" (9mm) in July. With an average of merely 6.6 rainfall days, visitors can anticipate largely dry and clear days. These factors, combined with the excessive daylight hours in the day - making up almost two thirds of the day - contribute to a visitor friendly environment.
The worst time to visit Idaho Falls
Contrastingly, the January winter period is met with adverse conditions, making it less than ideal for a visitation. With the temperature stooping to a minimum of 14.2°F (-9.9°C) and maintaining a maximum of just 28°F (-2.2°C), it becomes inhospitable for anyone unaccustomed to cold weather. Paralleling these circumstances, daylight hours plummet to 9. Rainfall isn't an area of concern during these months, however, the increase in snowfall to 3.86" (98mm) due to the low temperatures presents a challenging terrain.
Considering these factors, along with reduced visibility of 4 miles and high wind speeds of 10.4mph (16.7km/h), it becomes apparent that the conditions in January are not optimal for travel or tourism.
Considering these factors, along with reduced visibility of 4 miles and high wind speeds of 10.4mph (16.7km/h), it becomes apparent that the conditions in January are not optimal for travel or tourism.
Spring weather in Idaho Falls
During the spring months, Idaho Falls sees temperatures that range from 43°F (6.1°C) to 64.4°F (18°C), with substantial volumes of daylight hours - 14.7 by May - warranting the pleasant weather conditions that are characteristic of this period. However, it is also a period of noticeable rainfall that goes beyond 0.59" (15mm) and extends up to 10.7 rainfall days in May.
Summer weather in Idaho Falls
Summer in Idaho Falls presents the warmest months of the year, espousing temperatures between 75°F (23.9°C) and 86.2°F (30.1°C). The summer months account for prolonged daylight and sunshine hours, reaching up to 15.4 hours and 11.8 hours respectively. The rainfall drops, with a minimum of 0.35" (9mm) present during July, ensuring near seamless sunny days.
Autumn weather in Idaho Falls
The autumn months see a gradual decrease in temperature from 73.6°F (23.1°C) in September to 41.2°F (5.1°C) in November. Daylight hours move from 12.5 to 9.7, reflecting the movement of the season. The beginning period sees a rise in rainfall, peaking at 0.83" (21mm) in September, however, undergoing a steady decrease up until November.
Winter weather in Idaho Falls
Winter is marked by low temperatures that go from 27.9°F (-2.3°C) to 14.2°F (-9.9°C) in January. The daylight hours tend to remain between 9 and 9.7. Rainfall sees a general dip while snowfall presents itself abundantly - reaching a towering 3.86" (98mm) in December. The weather conditions remain cold and severe throughout the winter period with increasing cloud cover.
Weather in January
The characteristically frigid air of Idaho Falls in January seems to hold the city in a deep freeze. Residents routinely awaken to brisk temperatures that can plunge to a biting 14.2°F (-9.9°C), making it the coldest month of the year. Weather in January »
Weather in February
February brings to Idaho Falls a certain break from the harsh cold of January, although still maintaining a wintry chill. The county experiences an increment, albeit small, in temperature. This upswing in temperature doesn't mean that winter is over, instead, residents continue to contend with substantial snowfall. Weather in February »
Weather in March
As residents anxiously anticipate the arrival of spring, March's weather in Idaho Falls becomes less severe, yet retains some winter vestiges. The shift is marked by a significantly milder climate; and there is also a notable increase in brightness as the length of the day starts to extend. Weather in March »
Weather in April
With April's arrival, the strong grip of winter significantly loosens in Idaho Falls. The landscape begins to significantly shift from white to green as snow gives way to rain showers. The vibrant sun stays out longer, a welcome change for residents who've weathered months of wintry gloom. Weather in April »
Weather in May
May marks the full onset of spring in Idaho Falls, providing a much-needed break from the long winter spell. The city comes alive with temperate weather and increased hours of daylight enhancing outdoor activities. Nevertheless, the rainfall peaks during this month, lending credence to the adage, "April showers bring May flowers." While the majority of precipitation falls as rain, occasional surprise snowfall maintains the unpredictability of the weather. Weather in May »
Weather in June
The anticipation of summer becomes a reality in June in Idaho Falls. Warm days become the norm, and snowfall officially becomes non-existent. People begin to take full advantage of the longest daylight hours of the year and the relatively dry weather conditions. Weather in June »
Weather in July
July in Idaho Falls embraces the full swing of the summer season, radiating with temperatures soaring to a sizzling 86.2°F (30.1°C). Unsurprisingly, this makes July the hottest month of the year. Sun-soaked days and extended daylight hours promote enjoyment of the outdoors. Weather in July »
Weather in August
August’s weather in Idaho Falls witness a slight drop in temperature from July, marking the beginning of the slow retreat of summer heat. The warmth, however, is still considerable, and combined with relatively low precipitation, conditions remain ideal for outdoor endeavors. Weather in August »
Weather in September
September brings early signs of autumn to Idaho Falls, imbuing the city with an entirely new atmosphere. The climate starts to cool, and humidity levels rise, setting a dramatic background for the colorful fall foliage. Conversely, a rare fall thunderstorm should not be ruled out owing to a rise in rainfall. Weather in September »
Weather in October
Idaho Falls in October has a distinctive chill in the air indicating the onset of winter. Although much warmer than winter months, locals start to feel the cold creeping in, notably during early mornings and late evenings. An increase in cloud cover is evident, providing the backdrop for a picturesque fall landscape. Weather in October »
Weather in November
November in Idaho Falls marks the beginning of the icy winter season, with sharp dips in temperature causing residents to bundle up. The month sees a shift from rain to snow, indicating a transition from fall to winter. Daylight hours shrink noticeably, and the city often wakes up to a picturesque frosty morning. Weather in November »
Weather in December
December brings the year to a close with peak winter conditions in Idaho Falls. Temperatures continue their downward trajectory from November, keeping the city shrouded in a cold spell. Maximum snowfall days coupled with fewest daylight and sunshine hours contribute to the overall wintery atmosphere. Weather in December »
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the most humid month in Idaho Falls?
With an average relative humidity of 90%, January is the most humid month in Idaho Falls, Idaho.
How many days does it rain in Idaho Falls?
Throughout the year, there are 84.3 rainfall days, and 6.97" (177mm) of precipitation is accumulated.
When does it snow in Idaho Falls?
Months with snowfall are January through May, September through December.
When does it snow the most in Idaho Falls?
January is the month with the most snowfall in Idaho Falls. Snow falls for 12.8 days and accumulates 3.86" (98mm) of snow.
How many days does it snow in Idaho Falls?
In Idaho Falls, during the entire year, snow falls for 54.4 days and aggregates up to 16.89" (429mm) of snow.
What is the month with the least sunshine in Idaho Falls?
The month with the least sunshine in Idaho Falls is January, with an average of 4.7h of sunshine.
What are the months with the lowest UV index in Idaho Falls?
January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Idaho Falls, Idaho.
When is Daylight Saving Time (DST) in Idaho Falls?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from MST to MDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from MDT to MST.
What is the wettest month in Idaho Falls?
The months with the most rainfall are May and September, with an average 0.83" (21mm) of precipitation.
When it does not snow in Idaho Falls?
In Idaho Falls, Idaho, snow does not fall in June through August.
When are the longest days in Idaho Falls?
With an average of 15h and 24min of daylight, June has the longest days of the year.
What are the warmest months in Idaho Falls?
With average high and low temperatures of 86.2°F (30.1°C) and 54.1°F (12.3°C) respectively, July is Idaho Falls's warmest month.
What is the driest month in Idaho Falls?
July is the month with the least rainfall in Idaho Falls, Idaho. Rain falls for 6.6 days and accumulates 0.35" (9mm) of precipitation.
What month has the most sunshine in Idaho Falls?
With an average of 11.8h of sunshine, July has the most sunshine of the year.
When is the highest UV index in Idaho Falls?
The month with the highest UV index is July, with an average maximum UV index of 6.
What is the least humid month in Idaho Falls?
The least humid month in Idaho Falls, Idaho, is August, with an average relative humidity of 35%.
What are the coldest months in Idaho Falls?
With average temperatures fluctuating between a high of 27.9°F (-2.3°C) and a low of 15.8°F (-9°C), December stands out as the coldest month in Idaho Falls, Idaho.
What is the month with the shortest days in Idaho Falls?
December has the shortest days of the year, with an average of 9h and 0min of daylight.
Average temperature
Idaho Falls, ID
The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is December (27.9°F).
The month with the highest average low temperature is August (54.3°F).
The coldest month (with the lowest average low temperature) is January (14.2°F).
Average pressure
Idaho Falls, ID
- Average pressure in January:
30.3"Hg - Average pressure in February:
30.16"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
29.96"Hg - Average pressure in May:
29.92"Hg - Average pressure in June:
29.91"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.96"Hg - Average pressure in September:
29.98"Hg - Average pressure in October:
30.06"Hg - Average pressure in November:
30.17"Hg - Average pressure in December:
30.26"Hg
The month with the highest atmospheric pressure is January (30.3"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed
Idaho Falls, ID
- Average wind speed in January:
5.8mph - Average wind speed in February:
7.1mph - Average wind speed in March:
7.8mph - Average wind speed in April:
9mph - Average wind speed in May:
8.2mph - Average wind speed in June:
8.8mph
- Average wind speed in July:
7.6mph - Average wind speed in August:
7.2mph - Average wind speed in September:
7.6mph - Average wind speed in October:
7.5mph - Average wind speed in November:
7.1mph - Average wind speed in December:
6.1mph
The windiest month (with the highest average wind speed) is April (9mph).
The calmest month (with the lowest average wind speed) is January (5.8mph).
Average humidity
Idaho Falls, ID
The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is August (35%).
Average rainfall
Idaho Falls, ID
- Average rainfall in January:
0.51" - Average rainfall in February:
0.43" - Average rainfall in March:
0.59" - Average rainfall in April:
0.63" - Average rainfall in May:
0.83" - Average rainfall in June:
0.59"
- Average rainfall in July:
0.35" - Average rainfall in August:
0.63" - Average rainfall in September:
0.83" - Average rainfall in October:
0.63" - Average rainfall in November:
0.47" - Average rainfall in December:
0.47"
The wettest months (with the highest rainfall) are May and September (0.83").
The driest month (with the least rainfall) is July (0.35").
Average rainfall days
Idaho Falls, ID
- Average rainfall days in January:
3.7 days - Average rainfall days in February:
5.1 days - Average rainfall days in March:
8.3 days - Average rainfall days in April:
9.5 days - Average rainfall days in May:
10.7 days - Average rainfall days in June:
7.3 days
- Average rainfall days in July:
6.6 days - Average rainfall days in August:
8.1 days - Average rainfall days in September:
8.1 days - Average rainfall days in October:
7.2 days - Average rainfall days in November:
4.2 days - Average rainfall days in December:
5.5 days
The month with the highest number of rainy days is May (10.7 days).
The month with the least rainy days is January (3.7 days).
Average snowfall
Idaho Falls, ID
- Average snowfall in January:
3.86" - Average snowfall in February:
2.48" - Average snowfall in March:
2.83" - Average snowfall in April:
0.91" - Average snowfall in May:
0.59" - Average snowfall in June:
0"
The month with the highest snowfall is January (3.86").
The months with the least snowfall are June, July and August (0").
Average snowfall days
Idaho Falls, ID
- Average snowfall days in January:
12.8 days - Average snowfall days in February:
11.3 days - Average snowfall days in March:
6.7 days - Average snowfall days in April:
3.3 days - Average snowfall days in May:
0.3 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0.1 days - Average snowfall days in October:
1.3 days - Average snowfall days in November:
5.7 days - Average snowfall days in December:
12.9 days
The month with the highest number of snowfall days is December (12.9 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight / Average sunshine
Idaho Falls, ID
- Average daylight in January:
9h and 2min - Average daylight in February:
10h and 3min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 3min - Average daylight in May:
14h and 4min - Average daylight in June:
15h and 2min
- Average daylight in July:
15h and 0min - Average daylight in August:
13h and 5min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 4min - Average daylight in December:
9h and 0min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in January:
4h and 4min - Average sunshine in February:
5h and 3min - Average sunshine in March:
7h and 2min - Average sunshine in April:
9h and 5min - Average sunshine in May:
10h and 5min - Average sunshine in June:
11h and 4min
- Average sunshine in July:
11h and 5min - Average sunshine in August:
11h and 4min - Average sunshine in September:
10h and 0min - Average sunshine in October:
7h and 2min - Average sunshine in November:
6h and 1min - Average sunshine in December:
5h and 0min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days
Idaho Falls, ID
- Average sunshine days in January:
18.4 days - Average sunshine days in February:
16.2 days - Average sunshine days in March:
18.2 days - Average sunshine days in April:
16.6 days - Average sunshine days in May:
18.3 days - Average sunshine days in June:
19.3 days
- Average sunshine days in July:
20.4 days - Average sunshine days in August:
18.2 days - Average sunshine days in September:
19.4 days - Average sunshine days in October:
22.1 days - Average sunshine days in November:
21.5 days - Average sunshine days in December:
17.5 days
The month with the most sunshine days is October (22.1 days).
The month with the least sunshine days is February (16.2 days).
Average UV index
Idaho Falls, ID
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover
Idaho Falls, ID
The months with the most cloud cover are January and February (Cloud cover 51).
The months with the least cloud cover are July and August (Cloud cover 11).
Average visibility
Idaho Falls, ID
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and February (4mi).
Idaho Falls, Idaho, USA
Weather forecast for your location
1. Click Locate me button
2. Allow the app to use your location
2. Allow the app to use your location