Climate and monthly weather forecastChatsworth, IL
Climate and monthly weather forecast
Weather in January
January, the same as December, in Chatsworth, Illinois, is a freezing cold winter month, with temperature in the range of an average low of 18.5°F (-7.5°C) and an average high of 30.6°F (-0.8°C). In Chatsworth, Illinois, January records the lowest average temperatures, peaking at 30.6°F (-0.8°C) and reaching a low of 18.5°F (-7.5°C). Weather in January »Weather in February
February, the last month of the winter in Chatsworth, is a cold month, with an average temperature ranging between min 21.7°F (-5.7°C) and max 35.1°F (1.7°C). Chatsworth's average high-temperature in February sits at a cold 35.1°F (1.7°C), showing little difference from the previous month. Weather in February »Weather in March
March, the first month of the spring in Chatsworth, is a frosty month, with an average temperature varying between 33.4°F (0.8°C) and 47.7°F (8.7°C). In March, the average high-temperature increases from a wintry 35.1°F (1.7°C) in February to a frosty 47.7°F (8.7°C). Weather in March »Weather in April
April in Chatsworth, Illinois, is a moderate spring month, with an average temperature varying between 43.9°F (6.6°C) and 59.7°F (15.4°C). Observing a rise in April, the average high-temperature goes from March's chilly 47.7°F (8.7°C) to a moderate 59.7°F (15.4°C). Weather in April »Weather in May
The last month of the spring, May, is an agreeable month in Chatsworth, Illinois, with temperature in the range of an average high of 71.6°F (22°C) and an average low of 55°F (12.8°C). The rise of average high-temperatures is seen in May, with an increase from a moderate 59.7°F (15.4°C) in April to a pleasant 71.6°F (22°C). Weather in May »Weather in June
June, the first month of the summer in Chatsworth, is a moderately hot month, with an average temperature fluctuating between 79.3°F (26.3°C) and 62.8°F (17.1°C). A minor escalation in the average high-temperature is seen with the onset of June, moving from an agreeable 71.6°F (22°C) in May to a moderately hot 79.3°F (26.3°C). Weather in June »Weather in July
July, the same as June, is a moderately hot summer month in Chatsworth, Illinois, with an average temperature ranging between max 80.8°F (27.1°C) and min 64.6°F (18.1°C). The temperatures reach their highest averages in July, with highs of 80.8°F (27.1°C) and lows of 64.6°F (18.1°C). The heat index value during July is calculated to be a hot 87.8°F (31°C). Weather in July »Weather in August
The last month of the summer, August, is another warm month in Chatsworth, Illinois, with temperature in the range of an average high of 79.7°F (26.5°C) and an average low of 62.6°F (17°C). Upon the beginning of August, Chatsworth's high-temperatures register at a still moderately hot 79.7°F (26.5°C), closely mirroring the preceding month. Weather in August »Weather in September
The first month of the autumn, September, is still a warm month in Chatsworth, Illinois, with an average temperature varying between 75.7°F (24.3°C) and 57.2°F (14°C). The commencement of September introduces an average high-temperature of a still moderately hot 75.7°F (24.3°C), closely mirroring the preceding month. Weather in September »Weather in October
October, the same as September, is another refreshing autumn month in Chatsworth, Illinois, with temperature in the range of an average high of 62.2°F (16.8°C) and an average low of 46.8°F (8.2°C). The arrival of October corresponds with a temperature reduction, down from September's warm 75.7°F (24.3°C) to an enjoyable 62.2°F (16.8°C). Weather in October »Weather in November
The last month of the autumn, November, is also a frosty month in Chatsworth, Illinois, with an average temperature ranging between min 34.9°F (1.6°C) and max 47.8°F (8.8°C). Chatsworth in November sees a clear temperature decline, with average high-temperatures decreasing from an enjoyable 62.2°F (16.8°C) in October to a chilly 47.8°F (8.8°C). Weather in November »Weather in December
December, the first month of the winter in Chatsworth, is also an icy month, with temperature in the range of an average high of 36.5°F (2.5°C) and an average low of 26.1°F (-3.3°C). The start of December signals a decrease in the average high-temperature, transitioning from a frosty 47.8°F (8.8°C) in November to a wintry 36.5°F (2.5°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
With average high temperatures of 30.6°F (-0.8°C) and lows of 18.5°F (-7.5°C), January is the coldest month.
The month with the least rainfall is January, when the rain falls for 5 days and typically collects 0.79" (20mm) of precipitation.
Throughout the year, there are 130.5 rainfall days, and 17.44" (443mm) of precipitation is accumulated.
Months with snowfall are January through April, October through December.
The month with the most snowfall is January, when snow falls for 10.6 days and typically aggregates up to 2.09" (53mm) of snow.
In Chatsworth, during the entire year, snow falls for 30.5 days and aggregates up to 7.68" (195mm) of snow.
January has the least sunshine of the year, with an average of 3.8h of sunshine.
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. Rain falls for 17 days and accumulates 2.56" (65mm) of precipitation.
In Chatsworth, snow does not fall in May through September.
June has the longest days of the year, with an average of 15h and 0min of daylight.
June has the most sunshine of the year, with an average of 9.9h of sunshine.
The months with the highest UV index are June and July, with an average maximum UV index of 6.
The warmest temperatures occur during July, when averages reach a peak of 80.8°F (27.1°C) and a low of 64.6°F (18.1°C).
The most humid month in Chatsworth is July, with an average relative humidity of 86%.
With an average relative humidity of 71%, October is the least humid month.
The month with the shortest days in Chatsworth, Illinois, is December, with an average of 9h and 18min of daylight.
The month with the lowest UV index is December, with an average maximum UV index of 1.
Average temperature
Chatsworth, IL
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (30.6°F).
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (18.5°F).
Average pressure
Chatsworth, IL
- Average pressure in January:
30.13"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.94"Hg - Average pressure in May:
29.96"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:
30.11"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Chatsworth, IL
- Average wind speed in January:
10.8mph - Average wind speed in February:
10.6mph - Average wind speed in March:
10.3mph - Average wind speed in April:
10.6mph - Average wind speed in May:
9.1mph - Average wind speed in June:
7.9mph
- Average wind speed in July:
6.5mph - Average wind speed in August:
6.4mph - Average wind speed in September:
7.6mph - Average wind speed in October:
9.5mph - Average wind speed in November:
10.3mph - Average wind speed in December:
10.2mph
The windiest month (with the highest average wind speed) is January (10.8mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity
Chatsworth, IL
The month with the highest relative humidity is July (86%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Chatsworth, IL
- Average rainfall in January:
0.79" - Average rainfall in February:
0.87" - Average rainfall in March:
1.34" - Average rainfall in April:
1.97" - Average rainfall in May:
2.56" - Average rainfall in June:
2.05"
- Average rainfall in July:
2.09" - Average rainfall in August:
1.5" - Average rainfall in September:
1.18" - Average rainfall in October:
1.34" - Average rainfall in November:
0.91" - Average rainfall in December:
0.87"
The wettest month (with the highest rainfall) is May (2.56").
The driest month (with the least rainfall) is January (0.79").
Average rainfall days
Chatsworth, IL
- Average rainfall days in January:
5 days - Average rainfall days in February:
5 days - Average rainfall days in March:
11.2 days - Average rainfall days in April:
13.3 days - Average rainfall days in May:
17 days - Average rainfall days in June:
15.1 days
- Average rainfall days in July:
15.3 days - Average rainfall days in August:
13.3 days - Average rainfall days in September:
10.5 days - Average rainfall days in October:
10.3 days - Average rainfall days in November:
7.6 days - Average rainfall days in December:
6.9 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 (5 days).
Average snowfall
Chatsworth, IL
The month with the highest snowfall is January (2.09").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Chatsworth, IL
- Average snowfall days in January:
10.6 days - Average snowfall days in February:
7.1 days - Average snowfall days in March:
3.7 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 days - Average snowfall days in October:
0.2 days - Average snowfall days in November:
2 days - Average snowfall days in December:
6.1 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
Chatsworth, IL
- Average daylight in January:
9h and 36min - 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 30min - Average daylight in June:
15h and 0min
- Average daylight in July:
14h and 48min - Average daylight in August:
13h and 42min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 6min - Average daylight in November:
9h and 54min - Average daylight in December:
9h and 18min
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 18min).
- Average sunshine in January:
3h and 48min - Average sunshine in February:
4h and 6min - Average sunshine in March:
6h and 12min - Average sunshine in April:
7h and 48min - Average sunshine in May:
8h and 48min - Average sunshine in June:
9h and 54min
- Average sunshine in July:
9h and 36min - Average sunshine in August:
9h and 48min - Average sunshine in September:
8h and 54min - Average sunshine in October:
5h and 54min - Average sunshine in November:
5h and 6min - Average sunshine in December:
4h and 18min
The month with the most sunshine is June (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days
Chatsworth, IL
- Average sunshine days in January:
17.2 days - Average sunshine days in February:
16.8 days - Average sunshine days in March:
16.3 days - Average sunshine days in April:
14.5 days - Average sunshine days in May:
11.5 days - Average sunshine days in June:
12.2 days
- Average sunshine days in July:
11.4 days - Average sunshine days in August:
13.5 days - Average sunshine days in September:
17.2 days - Average sunshine days in October:
19.1 days - Average sunshine days in November:
19.5 days - Average sunshine days in December:
18.9 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (11.4 days).
Average UV index
Chatsworth, IL
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
Chatsworth, IL
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is September (Cloud cover 32).
Average visibility
Chatsworth, 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).
