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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, is another cold winter month in Carterville, Illinois, with an average temperature ranging between min 26.1°F (-3.3°C) and max 39.6°F (4.2°C). Carterville's January weather, with an average high temperature of 39.6°F (4.2°C) and an average low temperature of 26.1°F (-3.3°C), tends to be the coldest of the year. Weather in January »
Weather in February
The last month of the winter, February, is a frosty month in Carterville, Illinois, with an average temperature varying between 43.7°F (6.5°C) and 29.8°F (-1.2°C). Carterville records an average high-temperature of a frosty 43.7°F (6.5°C) as February arrives, nearly mirroring the previous month's climate. Weather in February »
Weather in March
The first month of the spring, March, is a cool month in Carterville, Illinois, with an average temperature varying between 55.2°F (12.9°C) and 38.8°F (3.8°C). Carterville's transition into March sees a rise in the average high-temperature, advancing from a frosty 43.7°F (6.5°C) in February to a fresh 55.2°F (12.9°C). Weather in March »
Weather in April
April in Carterville, Illinois, is an enjoyable spring month, with an average temperature ranging between max 66.4°F (19.1°C) and min 48.7°F (9.3°C). The arrival of April brings a change in Carterville's weather, with average high-temperatures moving from March's cool 55.2°F (12.9°C) to a refreshing 66.4°F (19.1°C). Weather in April »
Weather in May
The last month of the spring, May, is a warm month in Carterville, Illinois, with temperature in the range of an average low of 58.1°F (14.5°C) and an average high of 75.4°F (24.1°C). May brings a temperature increase, with average high-temperatures moving from April's refreshing 66.4°F (19.1°C) to a moderately hot 75.4°F (24.1°C). Weather in May »
Weather in June
June, the first month of the summer in Carterville, is still a warm month, with temperature in the range of an average low of 66.4°F (19.1°C) and an average high of 84.7°F (29.3°C). The onset of June marks an increase in the average high-temperature, moving from 75.4°F (24.1°C) in May to a still moderately hot 84.7°F (29.3°C). Weather in June »
Weather in July
July is a tropical summer month in Carterville, Illinois, with an average temperature ranging between max 87.4°F (30.8°C) and min 68.5°F (20.3°C). Carterville notes the warmest temperatures in July, with a high average of 87.4°F (30.8°C) and a low of 68.5°F (20.3°C). The heat index in July is computed to be a very hot 102.2°F (39°C). Weather in July »
Weather in August
August, the last month of the summer in Carterville, is also a moderately hot month, with an average temperature fluctuating between 66.4°F (19.1°C) and 85.6°F (29.8°C). The average high-temperature during August registers at a warm 85.6°F (29.8°C), maintaining a close resemblance to the previous month. Weather in August »
Weather in September
September, the first month of the autumn in Carterville, is still a warm month, with temperature in the range of an average high of 80.8°F (27.1°C) and an average low of 60.4°F (15.8°C). The average high-temperature during September registers at a still moderately hot 80.8°F (27.1°C), closely corresponding to the preceding month. Weather in September »
Weather in October
October, the same as September, is another refreshing autumn month in Carterville, Illinois, with an average temperature fluctuating between 67.3°F (19.6°C) and 49.3°F (9.6°C). A change in temperatures is noted as September gives way to October, with average highs reducing from a moderately hot 80.8°F (27.1°C) to an enjoyable 67.3°F (19.6°C). Weather in October »
Weather in November
The last month of the autumn, November, is another cool month in Carterville, Illinois, with an average temperature fluctuating between 53.8°F (12.1°C) and 38.5°F (3.6°C). A subtle decrease in the average high-temperature marks November, falling from October's enjoyable 67.3°F (19.6°C) to a cool 53.8°F (12.1°C). Weather in November »
Weather in December
The first month of the winter, December, is also a frosty month in Carterville, Illinois, with an average temperature ranging between max 43.9°F (6.6°C) and min 31.8°F (-0.1°C). The average high-temperature decreases in December, shifting from a fresh 53.8°F (12.1°C) in November to a frosty 43.9°F (6.6°C). Weather in December »
[Resources]Frequently asked questions
What month is the coldest in Carterville?
The coldest period in Carterville, Illinois, tends to be January, when average temperatures fluctuate between a high of 39.6°F (4.2°C) and a low of 26.1°F (-3.3°C).
How many days does it rain in Carterville?
In Carterville, during the entire year, the rain falls for 137.6 days and collects up to 23.03" (585mm) of precipitation.
When does it snow in Carterville?
Months with snowfall in Carterville, Illinois, are January through April, October through December.
What is the snowiest month in Carterville?
The months with the most snowfall are January and February, with an average 0.94" (24mm) of accumulated snow.
How many days does it snow in Carterville?
In Carterville, during the entire year, snow falls for 14.5 days and aggregates up to 4.13" (105mm) of snow.
What is the month with the least sunshine in Carterville?
January has the least sunshine of the year, with an average of 4.6h of sunshine.
What is the month with the lowest UV index in Carterville?
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index.
When is Daylight Saving Time (DST) in Carterville?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Carterville, 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 rainiest month in Carterville?
April is the month with the most rainfall in Carterville, Illinois. Rain falls for 13.8 days and accumulates 3.11" (79mm) of precipitation.
What is the most humid month in Carterville?
The most humid month is May, with an average relative humidity of 79%.
When it does not snow in Carterville?
May through September are months without snowfall in Carterville.
What is the month with the highest UV index in Carterville?
May through August, with an average maximum UV index of 6, are months with the highest UV index in Carterville, Illinois.
When are the longest days in Carterville?
June has the longest days of the year in Carterville, Illinois, with an average of 14h and 42min of daylight.
What is the month with the most sunshine in Carterville?
June and July, with an average of 10.5h of sunshine, are months with the most sunshine in Carterville.
What part of the year is the hottest in Carterville?
Carterville witnesses the warmest weather in July, with temperatures averaging a high of 87.4°F (30.8°C) and a low of 68.5°F (20.3°C).
What is the driest month in Carterville?
The month with the least rainfall is September, when the rain falls for 10.5 days and typically collects 1.1" (28mm) of precipitation.
What is the least humid month in Carterville?
With an average relative humidity of 71%, October is the least humid month.
What is the month with the shortest days in Carterville?
With an average of 9h and 36min of daylight, December has the shortest days of the year in Carterville, Illinois.
Average temperature
Carterville, IL
The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (39.6°F).
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).
Average pressure
Carterville, IL
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.96"Hg - Average pressure in May:
29.97"Hg - Average pressure in June:
29.94"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:
30.04"Hg - Average pressure in November:
30.14"Hg - Average pressure in December:
30.14"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed
Carterville, IL
- Average wind speed in January:
9.4mph - Average wind speed in February:
9.4mph - Average wind speed in March:
9.3mph - Average wind speed in April:
9.1mph - Average wind speed in May:
7.6mph - Average wind speed in June:
6.6mph
- Average wind speed in July:
5.8mph - Average wind speed in August:
5.8mph - Average wind speed in September:
6.3mph - Average wind speed in October:
8.1mph - Average wind speed in November:
8.6mph - Average wind speed in December:
8.8mph
The windiest months (with the highest average wind speed) are January and February (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).
Average humidity
Carterville, IL
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Carterville, IL
- Average rainfall in January:
1.42" - Average rainfall in February:
1.65" - Average rainfall in March:
2.09" - Average rainfall in April:
3.11" - Average rainfall in May:
2.52" - Average rainfall in June:
2.13"
- Average rainfall in July:
2.09" - Average rainfall in August:
1.89" - Average rainfall in September:
1.1" - Average rainfall in October:
1.89" - Average rainfall in November:
1.69" - Average rainfall in December:
1.46"
The wettest month (with the highest rainfall) is April (3.11").
The driest month (with the least rainfall) is September (1.1").
Average rainfall days
Carterville, IL
- Average rainfall days in January:
8.8 days - Average rainfall days in February:
9.1 days - Average rainfall days in March:
12.8 days - Average rainfall days in April:
13.8 days - Average rainfall days in May:
15.1 days - Average rainfall days in June:
13.3 days
- Average rainfall days in July:
15.3 days - Average rainfall days in August:
13.5 days - Average rainfall days in September:
10.5 days - Average rainfall days in October:
8.5 days - Average rainfall days in November:
7.8 days - Average rainfall days in December:
9.1 days
The month with the highest number of rainy days is July (15.3 days).
The month with the least rainy days is November (7.8 days).
Average snowfall
Carterville, IL
The months with the highest snowfall are January and February (0.94").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Carterville, IL
- Average snowfall days in January:
4.1 days - Average snowfall days in February:
4.3 days - Average snowfall days in March:
1.8 days - Average snowfall days in April:
0.5 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:
0.9 days - Average snowfall days in December:
2.7 days
The month with the highest number of snowfall days is February (4.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Carterville, IL
- Average daylight in January:
9h and 5min - Average daylight in February:
10h and 5min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 1min - Average daylight in May:
14h and 1min - Average daylight in June:
14h and 4min
- Average daylight in July:
14h and 3min - 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 1min - Average daylight in December:
9h and 4min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in January:
4h and 4min - Average sunshine in February:
4h and 4min - Average sunshine in March:
6h and 2min - Average sunshine in April:
8h and 4min - Average sunshine in May:
9h and 1min - Average sunshine in June:
10h and 3min
- Average sunshine in July:
10h and 3min - Average sunshine in August:
10h and 2min - Average sunshine in September:
9h and 2min - Average sunshine in October:
6h and 3min - Average sunshine in November:
5h and 4min - Average sunshine in December:
4h and 4min
The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days
Carterville, IL
- Average sunshine days in January:
18.1 days - Average sunshine days in February:
14.8 days - Average sunshine days in March:
14.9 days - Average sunshine days in April:
13.7 days - Average sunshine days in May:
13.3 days - Average sunshine days in June:
13.3 days
- Average sunshine days in July:
12.9 days - Average sunshine days in August:
14.9 days - Average sunshine days in September:
17.5 days - Average sunshine days in October:
20.6 days - Average sunshine days in November:
19.9 days - Average sunshine days in December:
18.6 days
The month with the most sunshine days is October (20.6 days).
The month with the least sunshine days is July (12.9 days).
Average UV index
Carterville, IL
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover
Carterville, IL
The month with the most cloud cover is February (Cloud cover 51).
The months with the least cloud cover are June, August and September (Cloud cover 28).
Average visibility
Carterville, IL
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Carterville, Illinois, USA
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