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Contents
- 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
Weather in January
May, Idaho, USA - Weather January' itemprop='relatedLink'>January, the same as December, in May, Idaho, is a freezing cold winter month, with an average temperature ranging between max 28.4°F (-2°C) and min 8.1°F (-13.3°C). January's onset brings an average high-temperature of a still subzero cold 28.4°F (-2°C), showing a minute difference from December's 26.1°F (-3.3°C). Weather in January »
Weather in February
May, Idaho, USA - Weather February' itemprop='relatedLink'>February, the last month of the winter in May, is also a subzero cold month, with temperature in the range of an average low of 9.1°F (-12.7°C) and an average high of 28.6°F (-1.9°C). February's presence records an average high-temperature of a still subzero cold 28.6°F (-1.9°C), closely mirroring January's climate. Weather in February »
Weather in March
May, Idaho, USA - Weather March' itemprop='relatedLink'>March, the first month of the spring in May, is an icy month, with an average temperature fluctuating between 35.2°F (1.8°C) and 18°F (-7.8°C). May's March weather indicates a minor ascent in high-temperatures, adjusting from a subzero cold 28.6°F (-1.9°C) in February to a cold 35.2°F (1.8°C). Weather in March »
Weather in April
May, Idaho, USA - Weather April' itemprop='relatedLink'>April, like March, in May, Idaho, is a wintry spring month, with an average temperature varying between 42.4°F (5.8°C) and 25°F (-3.9°C). As March gives way to April, the average high-temperature displays a slight ascent, adjusting from a wintry 35.2°F (1.8°C) to a still icy 42.4°F (5.8°C). Weather in April »
Weather in May
May, the last month of the spring in May, is a fresh month, with an average temperature varying between 33.4°F (0.8°C) and 54.5°F (12.5°C). The beginning of May marks a shift in the average high-temperature, moving from April's cold 42.4°F (5.8°C) to a fresh 54.5°F (12.5°C). Weather in May »
Weather in June
The first month of the summer, June, is a comfortable month in May, Idaho, with an average temperature ranging between max 65.8°F (18.8°C) and min 40.3°F (4.6°C). The start of June is characterized by an increase in the average high-temperature, transitioning from a cool 54.5°F (12.5°C) to a refreshing 65.8°F (18.8°C). Weather in June »
Weather in July
July in May, Idaho, is a moderately hot summer month, with an average temperature fluctuating between 47.3°F (8.5°C) and 76.6°F (24.8°C). In May, July is identified by the highest average temperatures, reaching a peak of 76.6°F (24.8°C) and a low of 47.3°F (8.5°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in May, Idaho, with an average temperature fluctuating between 47.8°F (8.8°C) and 75.4°F (24.1°C). May, Idaho, commences August with an average high-temperature of a still moderately hot 75.4°F (24.1°C), maintaining a close resemblance to the previous month. Weather in August »
Weather in September
September, the first month of the autumn in May, is still a comfortable month, with an average temperature fluctuating between 41.5°F (5.3°C) and 65.7°F (18.7°C). As August transitions into September, May sees a drop in the average high-temperature, transitioning from a moderately hot 75.4°F (24.1°C) to a comfortable 65.7°F (18.7°C). Weather in September »
Weather in October
October, like September, is a frosty autumn month in May, Idaho, with an average temperature varying between 30.2°F (-1°C) and 49.6°F (9.8°C). May witnesses a significant decrease in the average high-temperature with the arrival of October, falling from September's enjoyable 65.7°F (18.7°C) to a chilly 49.6°F (9.8°C). Weather in October »
Weather in November
The last month of the autumn, November, is also an icy month in May, Idaho, with temperature in the range of an average low of 18.9°F (-7.3°C) and an average high of 36.7°F (2.6°C). The shift to November brings a decrease in the average high-temperature, falling from a chilly 49.6°F (9.8°C) in October to a wintry 36.7°F (2.6°C). Weather in November »
Weather in December
December, the first month of the winter in May, is still a freezing cold month, with an average temperature varying between 26.1°F (-3.3°C) and 8.6°F (-13°C). May notes the coldest temperatures in December, with a high average of 26.1°F (-3.3°C) and a low of 8.6°F (-13°C). Weather in December »
Updated: Aug 20, 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
How many days does it rain in May?
Throughout the year, there are 75.7 rainfall days, and 6.38" (162mm) of precipitation is accumulated.
When does it snow?
Months with snowfall are January through June, September through December.
How much does it snow?
In May, during the entire year, snow falls for 51.7 days and aggregates up to 18.62" (473mm) of snow.
What is the month with the least sunshine?
The month with the least sunshine is January, with an average of 5.8h of sunshine.
What is the month with the lowest UV index?
The months with the lowest UV index are January through April, October through December, with an average maximum UV index of 2.
What is the most humid month?
February is the most humid month, with an average relative humidity of 87%.
When does it snow the most?
February is the month with the most snowfall. Snow falls for 9.4 days and accumulates 3.54" (90mm) of snow.
When is Daylight Saving Time (DST)?
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 rainiest month?
June is the month with the most rainfall. Rain falls for 10.2 days and accumulates 1.1" (28mm) of precipitation.
When are the longest days?
The month with the longest days is June, with an average of 15h and 30min of daylight.
When is the highest UV index?
June and July, with an average maximum UV index of 5, are months with the highest UV index.
What are the warmest months?
July is the warmest month, exhibiting average temperatures of 76.6°F (24.8°C) at the peak and 47.3°F (8.5°C) at the base.
What are the least humid months in May?
The months with the lowest humidity are July and August, with an average relative humidity of 38%.
What is the driest month?
July is the month with the least rainfall. Rain falls for 4.7 days and accumulates 0.28" (7mm) of precipitation.
When it does not snow?
July and August are months without snowfall in May.
What month has the most sunshine?
With an average of 11.9h of sunshine, July has the most sunshine of the year.
What are the coldest months?
December is May's coldest month, registering average high temperatures of 26.1°F (-3.3°C) and lows of 8.6°F (-13°C).
What is the month with the shortest days?
With an average of 8h and 54min of daylight, December has the shortest days of the year.
Average temperature
May, ID
The warmest month (with the highest average high temperature) is July (76.6°F).
The month with the lowest average high temperature is December (26.1°F).
The month with the highest average low temperature is August (47.8°F).
The coldest month (with the lowest average low temperature) is January (8.1°F).
Average pressure
May, ID
- Average pressure in January:
30.27"Hg - Average pressure in February:
30.15"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
29.98"Hg - Average pressure in May:
29.93"Hg - Average pressure in June:
29.91"Hg
- Average pressure in July:
29.95"Hg - Average pressure in August:
29.95"Hg - Average pressure in September:
29.98"Hg - Average pressure in October:
30.06"Hg - Average pressure in November:
30.16"Hg - Average pressure in December:
30.24"Hg
The month with the highest atmospheric pressure is January (30.27"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed
May, ID
- Average wind speed in January:
4.8mph - Average wind speed in February:
5.2mph - Average wind speed in March:
5.6mph - Average wind speed in April:
5.6mph - Average wind speed in May:
5.3mph - Average wind speed in June:
5.7mph
- Average wind speed in July:
5.7mph - Average wind speed in August:
5.2mph - Average wind speed in September:
5.2mph - Average wind speed in October:
5.1mph - Average wind speed in November:
5.3mph - Average wind speed in December:
5mph
The windiest months (with the highest average wind speed) are June and July (5.7mph).
The calmest month (with the lowest average wind speed) is January (4.8mph).
Average humidity
May, ID
The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are July and August (38%).
Average rainfall
May, ID
- Average rainfall in January:
0.47" - Average rainfall in February:
0.55" - Average rainfall in March:
0.55" - Average rainfall in April:
0.59" - Average rainfall in May:
0.55" - Average rainfall in June:
1.1"
- Average rainfall in July:
0.28" - Average rainfall in August:
0.31" - Average rainfall in September:
0.51" - Average rainfall in October:
0.55" - Average rainfall in November:
0.39" - Average rainfall in December:
0.51"
The wettest month (with the highest rainfall) is June (1.1").
The driest month (with the least rainfall) is July (0.28").
Average rainfall days
May, ID
- Average rainfall days in January:
3.8 days - Average rainfall days in February:
4.1 days - Average rainfall days in March:
7.4 days - Average rainfall days in April:
9 days - Average rainfall days in May:
9.7 days - Average rainfall days in June:
10.2 days
- Average rainfall days in July:
4.7 days - Average rainfall days in August:
4.8 days - Average rainfall days in September:
6.9 days - Average rainfall days in October:
6.5 days - Average rainfall days in November:
4 days - Average rainfall days in December:
4.6 days
The month with the highest number of rainy days is June (10.2 days).
The month with the least rainy days is January (3.8 days).
Average snowfall
May, ID
- Average snowfall in January:
3.23" - Average snowfall in February:
3.54" - Average snowfall in March:
2.44" - Average snowfall in April:
1.57" - Average snowfall in May:
0.31" - Average snowfall in June:
0.75"
The month with the highest snowfall is February (3.54").
The months with the least snowfall are July and August (0").
Average snowfall days
May, ID
- Average snowfall days in January:
9 days - Average snowfall days in February:
9.4 days - Average snowfall days in March:
8.2 days - Average snowfall days in April:
4.8 days - Average snowfall days in May:
1.2 days - Average snowfall days in June:
0.2 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0.5 days - Average snowfall days in October:
2.5 days - Average snowfall days in November:
5.8 days - Average snowfall days in December:
10.1 days
The month with the highest number of snowfall days is December (10.1 days).
The months with the least snowfall days are July and August (0 days).
Average daylight / Average sunshine
May, 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 5min - Average daylight in June:
15h and 3min
- Average daylight in July:
15h and 1min - Average daylight in August:
14h and 0min - 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:
8h and 5min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in January:
5h and 5min - Average sunshine in February:
6h and 5min - Average sunshine in March:
7h and 5min - Average sunshine in April:
9h and 5min - Average sunshine in May:
11h and 1min - Average sunshine in June:
11h and 4min
- Average sunshine in July:
11h and 5min - Average sunshine in August:
11h and 5min - Average sunshine in September:
9h and 3min - Average sunshine in October:
7h and 5min - Average sunshine in November:
6h and 4min - Average sunshine in December:
6h and 0min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 5h and 48min).
Average sunshine days
May, ID
- Average sunshine days in January:
21.1 days - Average sunshine days in February:
17.8 days - Average sunshine days in March:
17.2 days - Average sunshine days in April:
17.2 days - Average sunshine days in May:
18.7 days - Average sunshine days in June:
17.5 days
- Average sunshine days in July:
24.1 days - Average sunshine days in August:
23.4 days - Average sunshine days in September:
21.6 days - Average sunshine days in October:
22.1 days - Average sunshine days in November:
21.3 days - Average sunshine days in December:
19.3 days
The month with the most sunshine days is July (24.1 days).
The months with the least sunshine days are March and April (17.2 days).
Average UV index
May, ID
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).
Average cloud cover
May, ID
The month with the most cloud cover is February (Cloud cover 44).
The month with the least cloud cover is July (Cloud cover 11).
Average visibility
May, ID
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and February (4mi).
May, Idaho, USA
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