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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
January, the same as December, in Fairfield, Idaho, is a freezing cold winter month, with an average temperature ranging between min 14.4°F (-9.8°C) and max 28.9°F (-1.7°C). Fairfield records a slight change with January's average high-temperatures adjusting to a still subzero cold 28.9°F (-1.7°C) from December's 27.9°F (-2.3°C). Weather in January »
Weather in February
February, the last month of the winter in Fairfield, is another freezing cold month, with temperature in the range of an average high of 31.3°F (-0.4°C) and an average low of 16.7°F (-8.5°C). Fairfield registers an average high-temperature of a still freezing cold 31.3°F (-0.4°C) at the commencement of February, closely related to the preceding month. Weather in February »
Weather in March
March, the first month of the spring in Fairfield, is a cold month, with temperature in the range of an average high of 39.7°F (4.3°C) and an average low of 25.3°F (-3.7°C). The average high-temperature mildly increases in March, edging from a freezing cold 31.3°F (-0.4°C) in February to an icy 39.7°F (4.3°C). Weather in March »
Weather in April
April is a fresh spring month in Fairfield, Idaho, with an average temperature varying between 32.4°F (0.2°C) and 50°F (10°C). Fairfield in April shows a temperature shift, moving from an average high of an icy 39.7°F (4.3°C) in March to a cool 50°F (10°C). Weather in April »
Weather in May
May, the last month of the spring in Fairfield, is a refreshing month, with an average temperature varying between 39.7°F (4.3°C) and 60.4°F (15.8°C). May's arrival coincides with a rise in the average high-temperature, moving from April's fresh 50°F (10°C) to a mild 60.4°F (15.8°C). Weather in May »
Weather in June
The first month of the summer, June, is a pleasant month in Fairfield, Idaho, with temperature in the range of an average low of 46.9°F (8.3°C) and an average high of 70.9°F (21.6°C). The arrival of June signals an increase in the average high-temperature, moving from a moderate 60.4°F (15.8°C) in May to an agreeable 70.9°F (21.6°C). Weather in June »
Weather in July
July in Fairfield, Idaho, is a moderately hot summer month, with an average temperature varying between 82.9°F (28.3°C) and 55.6°F (13.1°C). Fairfield's warmest temperatures are experienced in July, with average high temperatures of 82.9°F (28.3°C) and lows of 55.6°F (13.1°C). Weather in July »
Weather in August
August, the last month of the summer in Fairfield, is another warm month, with an average temperature ranging between max 81.7°F (27.6°C) and min 55.6°F (13.1°C). The commencement of August notes an average high-temperature of a still moderately hot 81.7°F (27.6°C), exhibiting little difference from the previous month. Weather in August »
Weather in September
September, the first month of the autumn in Fairfield, is also an agreeable month, with an average temperature ranging between max 70.9°F (21.6°C) and min 49.1°F (9.5°C). The commencement of September involves a temperature shift, with the average high-temperature dropping from a warm 81.7°F (27.6°C) in August to an agreeable 70.9°F (21.6°C). Weather in September »
Weather in October
October, the same as September, is a cool autumn month in Fairfield, Idaho, with an average temperature varying between 54°F (12.2°C) and 36.9°F (2.7°C). Fairfield witnesses a significant decrease in the average high-temperature with the arrival of October, falling from September's pleasant 70.9°F (21.6°C) to a cool 54°F (12.2°C). Weather in October »
Weather in November
November, the last month of the autumn in Fairfield, is another cold month, with temperature in the range of an average high of 40.1°F (4.5°C) and an average low of 24.8°F (-4°C). November's arrival correlates with a reduction in the average high-temperature, down from a fresh 54°F (12.2°C) in October to a wintry 40.1°F (4.5°C). Weather in November »
Weather in December
December, the first month of the winter in Fairfield, is still a freezing cold month, with an average temperature ranging between max 27.9°F (-2.3°C) and min 14.5°F (-9.7°C). Fairfield records the coldest temperatures in December, averaging a high of 27.9°F (-2.3°C) and a low of 14.5°F (-9.7°C). Weather in December »
Updated: Aug 8, 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?
The most humid month is January, with an average relative humidity of 84%.
How much does it rain in Fairfield?
In Fairfield, during the entire year, the rain falls for 74.4 days and collects up to 8.03" (204mm) of precipitation.
When does it snow in Fairfield?
Months with snowfall are January through May, September through December.
How much does it snow?
In Fairfield, during the entire year, snow falls for 44.1 days and aggregates up to 29.65" (753mm) of snow.
What are the months with the least sunshine?
The months with the least sunshine are January and December, with an average of 5.9h of sunshine.
When is the lowest UV index in Fairfield?
The months with the lowest UV index are January through March, October through December, with an average maximum UV index of 2.
What is the rainiest month?
The month with the most rainfall is February, when the rain falls for 4.9 days and typically aggregates up to 1.02" (26mm) of precipitation.
When does it snow the most?
The month with the most snowfall is February, when snow falls for 9.9 days and typically aggregates up to 7.87" (200mm) 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.
When it does not snow?
In Fairfield, snow does not fall in June through August.
When are the longest days?
With an average of 15h and 18min of daylight, June has the longest days of the year in Fairfield.
What part of the year is the hottest?
July registers as the month with the average highest temperatures, reaching 82.9°F (28.3°C) at its peak and 55.6°F (13.1°C) at the lowest.
What is the driest month?
July is the month with the least rainfall. Rain falls for 5.3 days and accumulates 0.28" (7mm) of precipitation.
What month has the most sunshine?
July has the most sunshine of the year, with an average of 12h of sunshine.
When is the highest UV index in Fairfield?
July is the month with the highest UV index, with an average maximum UV index of 6.
What is the least humid month?
With an average relative humidity of 32%, August is the least humid month.
What time of the year is the coldest in Fairfield?
December, marked by an average high-temperature of 27.9°F (-2.3°C) and a low-temperature of 14.5°F (-9.7°C), is the coldest month.
What is the month with the shortest days?
December has the shortest days of the year, with an average of 9h and 0min of daylight.
Average temperature
Fairfield, ID
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is December (27.9°F).
The months with the highest average low temperature are July and August (55.6°F).
The coldest month (with the lowest average low temperature) is January (14.4°F).
Average pressure
Fairfield, ID
- Average pressure in January:
30.28"Hg - Average pressure in February:
30.15"Hg - Average pressure in March:
30.05"Hg - Average pressure in April:
29.96"Hg - Average pressure in May:
29.9"Hg - Average pressure in June:
29.88"Hg
- Average pressure in July:
29.91"Hg - Average pressure in August:
29.9"Hg - Average pressure in September:
29.94"Hg - Average pressure in October:
30.04"Hg - Average pressure in November:
30.14"Hg - Average pressure in December:
30.24"Hg
The month with the highest atmospheric pressure is January (30.28"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed
Fairfield, ID
- Average wind speed in January:
5.5mph - Average wind speed in February:
6.1mph - Average wind speed in March:
6.7mph - Average wind speed in April:
7.6mph - Average wind speed in May:
7.2mph - Average wind speed in June:
7.6mph
- Average wind speed in July:
7.3mph - Average wind speed in August:
7mph - Average wind speed in September:
6.6mph - Average wind speed in October:
6.3mph - Average wind speed in November:
5.9mph - Average wind speed in December:
5.3mph
The windiest months (with the highest average wind speed) are April and June (7.6mph).
The calmest month (with the lowest average wind speed) is December (5.3mph).
Average humidity
Fairfield, ID
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is August (32%).
Average rainfall
Fairfield, ID
- Average rainfall in January:
0.83" - Average rainfall in February:
1.02" - Average rainfall in March:
0.83" - Average rainfall in April:
0.67" - Average rainfall in May:
0.98" - Average rainfall in June:
0.51"
- Average rainfall in July:
0.28" - Average rainfall in August:
0.35" - Average rainfall in September:
0.43" - Average rainfall in October:
0.67" - Average rainfall in November:
0.59" - Average rainfall in December:
0.87"
The wettest month (with the highest rainfall) is February (1.02").
The driest month (with the least rainfall) is July (0.28").
Average rainfall days
Fairfield, ID
- Average rainfall days in January:
2.8 days - Average rainfall days in February:
4.9 days - Average rainfall days in March:
7.8 days - Average rainfall days in April:
9.5 days - Average rainfall days in May:
12 days - Average rainfall days in June:
7.3 days
- Average rainfall days in July:
5.3 days - Average rainfall days in August:
5.3 days - Average rainfall days in September:
6.2 days - Average rainfall days in October:
5.9 days - Average rainfall days in November:
3.5 days - Average rainfall days in December:
3.9 days
The month with the highest number of rainy days is May (12 days).
The month with the least rainy days is January (2.8 days).
Average snowfall
Fairfield, ID
- Average snowfall in January:
6.89" - Average snowfall in February:
7.87" - Average snowfall in March:
3.43" - Average snowfall in April:
0.98" - Average snowfall in May:
0.2" - Average snowfall in June:
0"
The month with the highest snowfall is February (7.87").
The months with the least snowfall are June, July and August (0").
Average snowfall days
Fairfield, ID
- Average snowfall days in January:
8.5 days - Average snowfall days in February:
9.9 days - Average snowfall days in March:
6.4 days - Average snowfall days in April:
2.5 days - Average snowfall days in May:
0.4 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:
0.2 days - Average snowfall days in October:
1.1 days - Average snowfall days in November:
4.6 days - Average snowfall days in December:
10.5 days
The month with the highest number of snowfall days is December (10.5 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight / Average sunshine
Fairfield, 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 18min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in January:
5h and 5min - Average sunshine in February:
7h and 2min - Average sunshine in March:
8h and 1min - Average sunshine in April:
10h and 0min - Average sunshine in May:
11h and 1min - Average sunshine in June:
11h and 5min
- Average sunshine in July:
12h and 0min - Average sunshine in August:
11h and 4min - Average sunshine in September:
9h and 4min - Average sunshine in October:
7h and 5min - Average sunshine in November:
6h and 4min - Average sunshine in December:
5h and 5min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The months with the least sunshine are January and December (Average sunshine: 5h and 54min).
Average sunshine days
Fairfield, ID
- Average sunshine days in January:
22.3 days - Average sunshine days in February:
17.6 days - Average sunshine days in March:
19.1 days - Average sunshine days in April:
17.8 days - Average sunshine days in May:
15.6 days - Average sunshine days in June:
20.6 days
- Average sunshine days in July:
22 days - Average sunshine days in August:
21.8 days - Average sunshine days in September:
21.2 days - Average sunshine days in October:
23.5 days - Average sunshine days in November:
22.6 days - Average sunshine days in December:
19.4 days
The month with the most sunshine days is October (23.5 days).
The month with the least sunshine days is May (15.6 days).
Average UV index
Fairfield, 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
Fairfield, ID
The month with the most cloud cover is December (Cloud cover 38).
The month with the least cloud cover is July (Cloud cover 9).
Average visibility
Fairfield, 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, February and December (5mi).
Fairfield, Idaho, USA
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