Climate and monthly weather forecastChestnut, IL
Climate and monthly weather forecast
Weather in January
January, like December, in Chestnut, Illinois, is another cold winter month, with temperature in the range of an average high of 32.5°F (0.3°C) and an average low of 20.5°F (-6.4°C). Chestnut notes the coldest temperatures in January, with a high average of 32.5°F (0.3°C) and a low of 20.5°F (-6.4°C). Weather in January »Weather in February
The last month of the winter, February, is also a wintry month in Chestnut, Illinois, with temperature in the range of an average high of 37.6°F (3.1°C) and an average low of 24.6°F (-4.1°C). February reports an average high-temperature of a still wintry 37.6°F (3.1°C), slightly varied from January's 32.5°F (0.3°C). Weather in February »Weather in March
March, the first month of the spring in Chestnut, is a fresh month, with temperature in the range of an average high of 50°F (10°C) and an average low of 35.2°F (1.8°C). Noticing a change, the average high-temperature during March moves from February's wintry 37.6°F (3.1°C) to a fresh 50°F (10°C). Weather in March »Weather in April
April in Chestnut, Illinois, is a comfortable spring month, with an average temperature varying between 45.9°F (7.7°C) and 62.2°F (16.8°C). Observing a rise in April, the average high-temperature goes from March's fresh 50°F (10°C) to a comfortable 62.2°F (16.8°C). Weather in April »Weather in May
May, the last month of the spring in Chestnut, is a pleasant month, with an average temperature fluctuating between 56.5°F (13.6°C) and 72.9°F (22.7°C). As Chestnut, Illinois, transitions into May, the average high-temperature shows a change, moving from an enjoyable 62.2°F (16.8°C) in April to an agreeable 72.9°F (22.7°C). Weather in May »Weather in June
The first month of the summer, June, is a warm month in Chestnut, Illinois, with an average temperature varying between 63.9°F (17.7°C) and 80.6°F (27°C). The shift into June is marked by a modest rise in the average high-temperature, moving from May's pleasant 72.9°F (22.7°C) to a warm 80.6°F (27°C). Weather in June »Weather in July
July, like June, in Chestnut, Illinois, is another warm summer month, with an average temperature ranging between min 65.7°F (18.7°C) and max 82°F (27.8°C). July, with its average high-temperature of 82°F (27.8°C) and an average low-temperature of 65.7°F (18.7°C), holds the record as the warmest month. In July, the heat index is appraised at a hot 89.6°F (32°C). Weather in July »Weather in August
The last month of the summer, August, is also a moderately hot month in Chestnut, Illinois, with an average temperature fluctuating between 63.9°F (17.7°C) and 81.3°F (27.4°C). Shifting into August, Chestnut records an average high-temperature of a still moderately hot 81.3°F (27.4°C), presenting minor fluctuations compared to the previous month. Weather in August »Weather in September
September, the first month of the autumn in Chestnut, is also a moderately hot month, with an average temperature varying between 77°F (25°C) and 58.5°F (14.7°C). September's onset records an average high-temperature of a still warm 77°F (25°C), a near match to August's 81.3°F (27.4°C). Weather in September »Weather in October
October, like September, in Chestnut, Illinois, is another comfortable autumn month, with an average temperature varying between 47.8°F (8.8°C) and 63.9°F (17.7°C). October brings a decrease in the average high-temperature, shifting from a warm 77°F (25°C) in September to a comfortable 63.9°F (17.7°C). Weather in October »Weather in November
The last month of the autumn, November, is another chilly month in Chestnut, Illinois, with an average temperature fluctuating between 49.8°F (9.9°C) and 36°F (2.2°C). The average high-temperature drops in November, from October's comfortable 63.9°F (17.7°C) to a chilly 49.8°F (9.9°C). Weather in November »Weather in December
December, the first month of the winter in Chestnut, is also a wintry month, with temperature in the range of an average high of 38.3°F (3.5°C) and an average low of 27.5°F (-2.5°C). A shift in Chestnut's weather is observed as November turns into December, with the average high temperature reducing from a frosty 49.8°F (9.9°C) to a cold 38.3°F (3.5°C). 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
January is the coldest month of the year, registering average temperatures as high as 32.5°F (0.3°C) and as low as 20.5°F (-6.4°C).
Throughout the year, there are 141.8 rainfall days, and 22.24" (565mm) of precipitation is accumulated.
January through April, November and December are months with snowfall in Chestnut, Illinois.
January is the month with the most snowfall in Chestnut, Illinois. Snow falls for 9.4 days and accumulates 2.24" (57mm) of snow.
Throughout the year, there are 29.7 snowfall days, and 7.13" (181mm) of snow is accumulated.
The month with the least sunshine in Chestnut, Illinois, is January, with an average of 4h of sunshine.
The month with the lowest UV index in Chestnut is January, with an average maximum UV index of 1.
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.
May is the month with the most rainfall in Chestnut. Rain falls for 17 days and accumulates 2.68" (68mm) of precipitation.
In Chestnut, snow does not fall in May through October.
June has the longest days of the year in Chestnut, with an average of 15h and 0min of daylight.
June has the most sunshine of the year in Chestnut, Illinois, with an average of 10.2h of sunshine.
June through August, with an average maximum UV index of 6, are months with the highest UV index in Chestnut, Illinois.
July is the month when Chestnut's temperatures reach their peak, with averages of 82°F (27.8°C) and lows of 65.7°F (18.7°C).
With an average relative humidity of 84%, July is the most humid month.
With an average relative humidity of 70%, October is the least humid month in Chestnut, Illinois.
December is the month with the least rainfall. Rain falls for 8.3 days and accumulates 1.1" (28mm) of precipitation.
The month with the shortest days in Chestnut, Illinois, is December, with an average of 9h and 24min of daylight.
Average temperature
Chestnut, IL
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (32.5°F).
The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).
Average pressure
Chestnut, IL
- Average pressure in January:
30.15"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.94"Hg - Average pressure in May:
29.95"Hg - Average pressure in June:
29.92"Hg
- Average pressure in July:
29.97"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 (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Chestnut, IL
- Average wind speed in January:
10.4mph - Average wind speed in February:
10.4mph - Average wind speed in March:
10.3mph - Average wind speed in April:
10.6mph - Average wind speed in May:
8.8mph - Average wind speed in June:
7.5mph
- Average wind speed in July:
6.3mph - Average wind speed in August:
6.3mph - Average wind speed in September:
7.3mph - Average wind speed in October:
9.1mph - Average wind speed in November:
9.8mph - Average wind speed in December:
9.8mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).
Average humidity
Chestnut, IL
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (70%).
Average rainfall
Chestnut, IL
- Average rainfall in January:
1.42" - Average rainfall in February:
1.18" - Average rainfall in March:
1.61" - Average rainfall in April:
2.44" - Average rainfall in May:
2.68" - Average rainfall in June:
2.48"
- Average rainfall in July:
2.05" - Average rainfall in August:
2.13" - Average rainfall in September:
1.81" - Average rainfall in October:
2.01" - Average rainfall in November:
1.34" - Average rainfall in December:
1.1"
The wettest month (with the highest rainfall) is May (2.68").
The driest month (with the least rainfall) is December (1.1").
Average rainfall days
Chestnut, IL
- Average rainfall days in January:
6.3 days - Average rainfall days in February:
6.3 days - Average rainfall days in March:
11.7 days - Average rainfall days in April:
14.8 days - Average rainfall days in May:
17 days - Average rainfall days in June:
15.8 days
- Average rainfall days in July:
16.3 days - Average rainfall days in August:
14.3 days - Average rainfall days in September:
11.8 days - Average rainfall days in October:
10.6 days - Average rainfall days in November:
8.6 days - Average rainfall days in December:
8.3 days
The month with the highest number of rainy days is May (17 days).
The months with the least rainy days are January and February (6.3 days).
Average snowfall
Chestnut, IL
The month with the highest snowfall is January (2.24").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Chestnut, IL
- Average snowfall days in January:
9.4 days - Average snowfall days in February:
7.1 days - Average snowfall days in March:
2.9 days - Average snowfall days in April:
0.8 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:
0.1 days - Average snowfall days in October:
0.3 days - Average snowfall days in November:
2.4 days - Average snowfall days in December:
6.7 days
The month with the highest number of snowfall days is January (9.4 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight / Average sunshine
Chestnut, IL
- Average daylight in January:
9h and 42min - Average daylight in February:
10h and 42min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - Average daylight in May:
14h and 24min - Average daylight in June:
15h and 0min
- Average daylight in July:
14h and 42min - Average daylight in August:
13h and 42min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 6min - Average daylight in November:
10h and 0min - Average daylight in December:
9h and 24min
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 18min - Average sunshine in March:
6h and 24min - Average sunshine in April:
8h and 0min - Average sunshine in May:
9h and 6min - Average sunshine in June:
10h and 12min
- Average sunshine in July:
9h and 54min - Average sunshine in August:
9h and 42min - Average sunshine in September:
9h and 0min - Average sunshine in October:
5h and 54min - Average sunshine in November:
5h and 18min - Average sunshine in December:
4h and 30min
The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days
Chestnut, IL
- Average sunshine days in January:
16.3 days - Average sunshine days in February:
14.7 days - Average sunshine days in March:
15.7 days - Average sunshine days in April:
12.8 days - Average sunshine days in May:
10.8 days - Average sunshine days in June:
11.8 days
- Average sunshine days in July:
10.9 days - Average sunshine days in August:
13.1 days - Average sunshine days in September:
15.8 days - Average sunshine days in October:
18.1 days - Average sunshine days in November:
18.9 days - Average sunshine days in December:
17.1 days
The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is May (10.8 days).
Average UV index
Chestnut, IL
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover
Chestnut, IL
The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are June and September (Cloud cover 31).
Average visibility
Chestnut, 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).
