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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 Fairmount, Illinois, is another subzero cold winter month, with temperature in the range of an average high of 31.6°F (-0.2°C) and an average low of 20.5°F (-6.4°C). Fairmount's coldest month, January, generally records average temperatures ranging from a high of 31.6°F (-0.2°C) to a low of 20.5°F (-6.4°C). Weather in January »
Weather in February
February, the last month of the winter in Fairmount, is a wintry month, with an average temperature varying between 37°F (2.8°C) and 23.9°F (-4.5°C). February showcases a minor temperature ascent, adjusting from January's freezing cold 31.6°F (-0.2°C) to an icy 37°F (2.8°C). Weather in February »
Weather in March
The first month of the spring, March, is a chilly month in Fairmount, Illinois, with an average temperature fluctuating between 49.1°F (9.5°C) and 34.9°F (1.6°C). The arrival of March brings a change in Fairmount's weather, with average high-temperatures moving from February's wintry 37°F (2.8°C) to a frosty 49.1°F (9.5°C). Weather in March »
Weather in April
April is an enjoyable spring month in Fairmount, Illinois, with an average temperature varying between 61.2°F (16.2°C) and 45°F (7.2°C). The onset of April brings a rise in the average high-temperature, elevating from a frosty 49.1°F (9.5°C) in March to an enjoyable 61.2°F (16.2°C). Weather in April »
Weather in May
May, the last month of the spring in Fairmount, is a pleasant month, with an average temperature ranging between min 55°F (12.8°C) and max 71.8°F (22.1°C). As Fairmount enters May, the average high-temperature increases from the a comfortable 61.2°F (16.2°C) of April to a pleasant 71.8°F (22.1°C). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in Fairmount, Illinois, with an average temperature fluctuating between 63.3°F (17.4°C) and 79.9°F (26.6°C). Fairmount's transition into June brings a slight rise in the average high-temperature, moving from an agreeable 71.8°F (22.1°C) in May to a moderately hot 79.9°F (26.6°C). Weather in June »
Weather in July
July, like June, in Fairmount, Illinois, is another warm summer month, with temperature in the range of an average low of 64.9°F (18.3°C) and an average high of 81.3°F (27.4°C). July tends to be the warmest month, with temperatures averaging a daily high of 81.3°F (27.4°C) and a low of 64.9°F (18.3°C). July's heat index is evaluated at a tropical 87.8°F (31°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Fairmount, Illinois, with an average temperature fluctuating between 80.6°F (27°C) and 63.3°F (17.4°C). August's advent presents an average high-temperature of a still warm 80.6°F (27°C), indicating a slight variation from the conditions of the previous month. Weather in August »
Weather in September
September, the first month of the autumn in Fairmount, is still a warm month, with an average temperature fluctuating between 76.1°F (24.5°C) and 57.7°F (14.3°C). Fairmount's shift from August to September is accompanied by an average high-temperature of a still warm 76.1°F (24.5°C), a slight deviation from 80.6°F (27°C). Weather in September »
Weather in October
October, like September, in Fairmount, Illinois, is another comfortable autumn month, with an average temperature varying between 63.1°F (17.3°C) and 47.1°F (8.4°C). The onset of October brings a small change in high-temperatures, falling from a warm 76.1°F (24.5°C) in September to a refreshing 63.1°F (17.3°C). Weather in October »
Weather in November
The last month of the autumn, November, is another chilly month in Fairmount, Illinois, with temperature in the range of an average low of 35.6°F (2°C) and an average high of 48.9°F (9.4°C). In Fairmount, entering November brings a temperature decrement, reducing from October's refreshing 63.1°F (17.3°C) to a frosty 48.9°F (9.4°C). Weather in November »
Weather in December
The first month of the winter, December, is also an icy month in Fairmount, Illinois, with temperature in the range of an average high of 37.6°F (3.1°C) and an average low of 27.5°F (-2.5°C). Fairmount's December weather features a mild decline in high-temperatures, reducing from a frosty 48.9°F (9.4°C) in November to a wintry 37.6°F (3.1°C). Weather in December »
Updated: Jul 14, 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 time of the year is the coldest?
January, marked by an average high-temperature of 31.6°F (-0.2°C) and a low-temperature of 20.5°F (-6.4°C), is the coldest month.
How many days does it rain in Fairmount?
Throughout the year, there are 151.8 rainfall days, and 25.63" (651mm) of precipitation is accumulated.
When does it snow?
January through April, November and December are months with snowfall in Fairmount.
How much does it snow?
In Fairmount, during the entire year, snow falls for 35.2 days and aggregates up to 8.82" (224mm) of snow.
What is the month with the least sunshine?
With an average of 4h of sunshine, January has the least sunshine of the year.
When is the lowest UV index?
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
What is the driest month?
The months with the least rainfall are February and September Rain falls for 6.6 days and accumulates 1.38" (35mm) of rain.
What is the snowiest month?
February is the month with the most snowfall. Snow falls for 8.9 days and accumulates 2.64" (67mm) 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 CST to CDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from CDT to CST.
What is the wettest month?
April is the month with the most rainfall. Rain falls for 15.3 days and accumulates 3.23" (82mm) of precipitation.
When it does not snow?
May through October are months without snowfall.
When are the longest days?
The month with the longest days is June, with an average of 15h and 0min of daylight.
What month has the most sunshine?
June has the most sunshine of the year, with an average of 10.1h of sunshine.
What are the months with the highest UV index?
The months with the highest UV index are June through August, with an average maximum UV index of 6.
What part of the year is the hottest?
The warmest temperatures occur during July, when averages reach a peak of 81.3°F (27.4°C) and a low of 64.9°F (18.3°C).
What is the most humid month?
July is the most humid month, with an average relative humidity of 84%.
What is the least humid month?
With an average relative humidity of 72%, October is the least humid month.
What is the month with the shortest days?
The month with the shortest days is December, with an average of 9h and 24min of daylight.
Average temperature
Fairmount, IL
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (31.6°F).
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).
Average pressure
Fairmount, IL
- Average pressure in January:
30.14"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.95"Hg - Average pressure in May:
29.96"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.98"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30.02"Hg - Average pressure in November:
30.12"Hg - Average pressure in December:
30.12"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Fairmount, IL
- Average wind speed in January:
10.4mph - Average wind speed in February:
10.3mph - Average wind speed in March:
9.9mph - Average wind speed in April:
10.2mph - Average wind speed in May:
8.6mph - Average wind speed in June:
7.5mph
- Average wind speed in July:
6.2mph - Average wind speed in August:
6.2mph - Average wind speed in September:
7.1mph - Average wind speed in October:
9.1mph - Average wind speed in November:
9.8mph - Average wind speed in December:
9.7mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).
Average humidity
Fairmount, IL
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall
Fairmount, IL
- Average rainfall in January:
1.61" - Average rainfall in February:
1.38" - Average rainfall in March:
2.32" - Average rainfall in April:
3.23" - Average rainfall in May:
3.15" - Average rainfall in June:
2.91"
- Average rainfall in July:
2.44" - Average rainfall in August:
2.24" - Average rainfall in September:
1.38" - Average rainfall in October:
2.05" - Average rainfall in November:
1.46" - Average rainfall in December:
1.46"
The wettest month (with the highest rainfall) is April (3.23").
The driest months (with the least rainfall) are February and September (1.38").
Average rainfall days
Fairmount, IL
- Average rainfall days in January:
7.3 days - Average rainfall days in February:
6.6 days - Average rainfall days in March:
12.3 days - Average rainfall days in April:
15.3 days - Average rainfall days in May:
18 days - Average rainfall days in June:
17.3 days
- Average rainfall days in July:
17.8 days - Average rainfall days in August:
14.6 days - Average rainfall days in September:
12.5 days - Average rainfall days in October:
12.4 days - Average rainfall days in November:
8.9 days - Average rainfall days in December:
8.8 days
The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is February (6.6 days).
Average snowfall
Fairmount, IL
The month with the highest snowfall is February (2.64").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Fairmount, IL
- Average snowfall days in January:
10.6 days - Average snowfall days in February:
8.9 days - Average snowfall days in March:
4.3 days - Average snowfall days in April:
0.9 days - Average snowfall days in May:
0 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 days - Average snowfall days in October:
0.1 days - Average snowfall days in November:
2.5 days - Average snowfall days in December:
7.9 days
The month with the highest number of snowfall days is January (10.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Fairmount, IL
- Average daylight in January:
9h and 4min - Average daylight in February:
10h and 4min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 2min - Average daylight in June:
15h and 0min
- Average daylight in July:
14h and 4min - Average daylight in August:
13h and 4min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 1min - Average daylight in November:
10h and 0min - Average daylight in December:
9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in January:
4h and 0min - Average sunshine in February:
4h and 1min - Average sunshine in March:
6h and 1min - Average sunshine in April:
8h and 1min - Average sunshine in May:
8h and 5min - Average sunshine in June:
10h and 1min
- Average sunshine in July:
9h and 5min - Average sunshine in August:
9h and 5min - Average sunshine in September:
8h and 5min - Average sunshine in October:
6h and 2min - Average sunshine in November:
5h and 2min - Average sunshine in December:
4h and 3min
The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days
Fairmount, IL
- Average sunshine days in January:
15 days - Average sunshine days in February:
13.1 days - Average sunshine days in March:
14.6 days - Average sunshine days in April:
11.6 days - Average sunshine days in May:
10 days - Average sunshine days in June:
10.2 days
- Average sunshine days in July:
9.5 days - Average sunshine days in August:
11.9 days - Average sunshine days in September:
15.2 days - Average sunshine days in October:
16.5 days - Average sunshine days in November:
18 days - Average sunshine days in December:
15.6 days
The month with the most sunshine days is November (18 days).
The month with the least sunshine days is July (9.5 days).
Average UV index
Fairmount, IL
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Fairmount, IL
The month with the most cloud cover is January (Cloud cover 58).
The months with the least cloud cover are June, August and September (Cloud cover 32).
Average visibility
Fairmount, IL
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Fairmount, Illinois, USA
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