Climate and monthly weather forecastCarpentersville, IL
Climate and monthly weather forecast
Weather in January
January, like December, is another subzero cold winter month in Carpentersville, Illinois, with an average temperature varying between 27°F (-2.8°C) and 15.3°F (-9.3°C). January, having an average high-temperature of 27°F (-2.8°C) and an average low-temperature of 15.3°F (-9.3°C), is the coldest month. Weather in January »Weather in February
The last month of the winter, February, is also a subzero cold month in Carpentersville, Illinois, with an average temperature varying between 30.7°F (-0.7°C) and 18°F (-7.8°C). A minimal variation is noted in Carpentersville's average high-temperature at the onset of February, reaching a still freezing cold 30.7°F (-0.7°C) from January's 27°F (-2.8°C). Weather in February »Weather in March
March, the first month of the spring in Carpentersville, is a chilly month, with an average temperature varying between 43.7°F (6.5°C) and 29.7°F (-1.3°C). The arrival of March brings a change in Carpentersville's weather, with average high-temperatures moving from February's freezing cold 30.7°F (-0.7°C) to a chilly 43.7°F (6.5°C). Weather in March »Weather in April
April is a cool spring month in Carpentersville, Illinois, with an average temperature varying between 55°F (12.8°C) and 38.8°F (3.8°C). Observing a rise in April, the average high-temperature goes from March's chilly 43.7°F (6.5°C) to a fresh 55°F (12.8°C). Weather in April »Weather in May
The last month of the spring, May, is a comfortable month in Carpentersville, Illinois, with an average temperature fluctuating between 50°F (10°C) and 67.1°F (19.5°C). The rise of average high-temperatures is seen in May, with an increase from a cool 55°F (12.8°C) in April to a comfortable 67.1°F (19.5°C). Weather in May »Weather in June
June, the first month of the summer in Carpentersville, is a moderately hot month, with an average temperature varying between 76.5°F (24.7°C) and 59.2°F (15.1°C). Carpentersville sees an increase in average high-temperatures during June, moving from a refreshing 67.1°F (19.5°C) in May to a moderately hot 76.5°F (24.7°C). Weather in June »Weather in July
July, the same as June, is another warm summer month in Carpentersville, Illinois, with an average temperature fluctuating between 80.1°F (26.7°C) and 63.7°F (17.6°C). Carpentersville's temperatures peak on average in July, reaching 80.1°F (26.7°C) at their highest and 63.7°F (17.6°C) at their lowest. Weather in July »Weather in August
August, the last month of the summer in Carpentersville, is also a moderately hot month, with an average temperature ranging between min 62.1°F (16.7°C) and max 78.6°F (25.9°C). Carpentersville notes an average high-temperature of a still moderately hot 78.6°F (25.9°C) in August, displaying minor variation from July. Weather in August »Weather in September
The first month of the autumn, September, is still a pleasant month in Carpentersville, Illinois, with an average temperature fluctuating between 72.5°F (22.5°C) and 55.6°F (13.1°C). September brings a slight decrease in temperature, down from a moderately hot 78.6°F (25.9°C) in August to an agreeable 72.5°F (22.5°C). Weather in September »Weather in October
October, the same as September, in Carpentersville, Illinois, is another mild autumn month, with an average temperature ranging between max 59.5°F (15.3°C) and min 44.2°F (6.8°C). With the onset of October, Carpentersville's average high-temperature adjusts, receding from September's pleasant 72.5°F (22.5°C) to a mild 59.5°F (15.3°C). Weather in October »Weather in November
November, the last month of the autumn in Carpentersville, is also a frosty month, with an average temperature ranging between min 31.8°F (-0.1°C) and max 45.1°F (7.3°C). The onset of November witnesses a clear shift in the average high-temperature, dropping from a moderate 59.5°F (15.3°C) in October to a frosty 45.1°F (7.3°C). Weather in November »Weather in December
The first month of the winter, December, is still a cold month in Carpentersville, Illinois, with an average temperature fluctuating between 33.3°F (0.7°C) and 23.2°F (-4.9°C). As November transitions into December, Carpentersville sees a drop in the average high-temperature, transitioning from a frosty 45.1°F (7.3°C) to a wintry 33.3°F (0.7°C). Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Carpentersville, IL
The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (27°F).
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (15.3°F).
Average pressure
Carpentersville, IL
- Average pressure in January:
30.11"Hg - Average pressure in February:
30.1"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
29.95"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"Hg - Average pressure in November:
30.09"Hg - Average pressure in December:
30.09"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Carpentersville, IL
- Average wind speed in January:
9.9mph - Average wind speed in February:
9.9mph - Average wind speed in March:
9.5mph - Average wind speed in April:
9.8mph - Average wind speed in May:
8.2mph - Average wind speed in June:
7.2mph
- Average wind speed in July:
6.4mph - Average wind speed in August:
6.1mph - Average wind speed in September:
7.1mph - Average wind speed in October:
8.7mph - Average wind speed in November:
9.4mph - Average wind speed in December:
9.2mph
The windiest months (with the highest average wind speed) are January and February (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).
Average humidity
Carpentersville, IL
The month with the highest relative humidity is January (85%).
The months with the lowest relative humidity are April and October (76%).
Average rainfall
Carpentersville, IL
- Average rainfall in January:
0.79" - Average rainfall in February:
0.79" - Average rainfall in March:
0.91" - Average rainfall in April:
1.89" - Average rainfall in May:
1.85" - Average rainfall in June:
1.81"
- Average rainfall in July:
1.85" - Average rainfall in August:
1.89" - Average rainfall in September:
1.1" - Average rainfall in October:
1.22" - Average rainfall in November:
0.71" - Average rainfall in December:
0.67"
The wettest months (with the highest rainfall) are April and August (1.89").
The driest month (with the least rainfall) is December (0.67").
Average rainfall days
Carpentersville, IL
- Average rainfall days in January:
4.9 days - Average rainfall days in February:
4.1 days - Average rainfall days in March:
10.3 days - Average rainfall days in April:
13.8 days - Average rainfall days in May:
15 days - Average rainfall days in June:
14.8 days
- Average rainfall days in July:
17.3 days - Average rainfall days in August:
15.8 days - Average rainfall days in September:
11.5 days - Average rainfall days in October:
11.5 days - Average rainfall days in November:
7.3 days - Average rainfall days in December:
6.5 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is February (4.1 days).
Average snowfall
Carpentersville, IL
- Average snowfall in January:
2.01" - Average snowfall in February:
1.57" - Average snowfall in March:
0.71" - Average snowfall in April:
1.3" - Average snowfall in May:
0.08" - Average snowfall in June:
0"
The month with the highest snowfall is January (2.01").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Carpentersville, IL
- Average snowfall days in January:
12.2 days - Average snowfall days in February:
9.3 days - Average snowfall days in March:
6.1 days - Average snowfall days in April:
2.3 days - Average snowfall days in May:
0.1 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:
0.5 days - Average snowfall days in November:
3.6 days - Average snowfall days in December:
9.1 days
The month with the highest number of snowfall days is January (12.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Carpentersville, IL
- Average daylight in January:
9h and 30min - Average daylight in February:
10h and 36min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 24min - Average daylight in May:
14h and 36min - Average daylight in June:
15h and 12min
- Average daylight in July:
14h and 54min - Average daylight in August:
13h and 48min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 6min - Average daylight in November:
9h and 48min - Average daylight in December:
9h and 12min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January:
3h and 42min - Average sunshine in February:
3h and 48min - Average sunshine in March:
6h and 6min - Average sunshine in April:
7h and 30min - Average sunshine in May:
8h and 30min - Average sunshine in June:
9h and 42min
- Average sunshine in July:
10h and 0min - Average sunshine in August:
9h and 54min - Average sunshine in September:
8h and 54min - Average sunshine in October:
5h and 30min - Average sunshine in November:
5h and 6min - Average sunshine in December:
3h and 54min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days
Carpentersville, IL
- Average sunshine days in January:
16.2 days - Average sunshine days in February:
15.3 days - Average sunshine days in March:
15.7 days - Average sunshine days in April:
12.9 days - Average sunshine days in May:
12.8 days - Average sunshine days in June:
12.2 days
- Average sunshine days in July:
10.7 days - Average sunshine days in August:
11.2 days - Average sunshine days in September:
14.5 days - Average sunshine days in October:
16.5 days - Average sunshine days in November:
18.3 days - Average sunshine days in December:
18.5 days
The month with the most sunshine days is December (18.5 days).
The month with the least sunshine days is July (10.7 days).
Average UV index
Carpentersville, IL
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover
Carpentersville, IL
The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are July, August and September (Cloud cover 32).
Average visibility
Carpentersville, IL
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).





