Expand
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 Rantoul, Illinois, is another subzero cold winter month, with temperature in the range of an average low of 19.8°F (-6.8°C) and an average high of 31.5°F (-0.3°C). With an average high-temperature of 31.5°F (-0.3°C) and an average low-temperature of 19.8°F (-6.8°C), January is the coldest month. Weather in January »
Weather in February
The last month of the winter, February, is a cold month in Rantoul, Illinois, with an average temperature fluctuating between 36.1°F (2.3°C) and 23.7°F (-4.6°C). With the onset of February, Rantoul's average high-temperature clocks in at an icy 36.1°F (2.3°C), showing a minor fluctuation from the previous month. Weather in February »
Weather in March
The first month of the spring, March, is a frosty month in Rantoul, Illinois, with temperature in the range of an average low of 34.3°F (1.3°C) and an average high of 49.1°F (9.5°C). As Rantoul welcomes March, the average high-temperature sees a rise, transitioning from an icy 36.1°F (2.3°C) in February to a frosty 49.1°F (9.5°C). Weather in March »
Weather in April
April is an enjoyable spring month in Rantoul, Illinois, with an average temperature varying between 45.3°F (7.4°C) and 60.8°F (16°C). With the onset of April, Rantoul's average high-temperature experiences a rise, moving from March's chilly 49.1°F (9.5°C) to a refreshing 60.8°F (16°C). Weather in April »
Weather in May
The last month of the spring, May, is an agreeable month in Rantoul, Illinois, with an average temperature ranging between min 55.6°F (13.1°C) and max 72.1°F (22.3°C). Rantoul's transition into May is marked by a temperature shift, moving from an enjoyable 60.8°F (16°C) in April to an agreeable 72.1°F (22.3°C). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in Rantoul, Illinois, with an average temperature varying between 79.9°F (26.6°C) and 63.7°F (17.6°C). Rantoul's weather shows a minor temperature rise with the arrival of June, moving from a pleasant 72.1°F (22.3°C) in May to a warm 79.9°F (26.6°C). Weather in June »
Weather in July
July, the same as June, is a moderately hot summer month in Rantoul, Illinois, with an average temperature varying between 64.8°F (18.2°C) and 81°F (27.2°C). The warmest period is July, when temperatures fluctuate between an average high of 81°F (27.2°C) and a low of 64.8°F (18.2°C). July's heat index is calculated to be a hot 87.8°F (31°C). Weather in July »
Weather in August
August, the last month of the summer in Rantoul, is also a moderately hot month, with an average temperature varying between 63.1°F (17.3°C) and 80.2°F (26.8°C). Rantoul's weather in August indicates an average high-temperature of a still moderately hot 80.2°F (26.8°C), nearly consistent with the 81°F (27.2°C) of July. Weather in August »
Weather in September
The first month of the autumn, September, is also a moderately hot month in Rantoul, Illinois, with temperature in the range of an average low of 57.9°F (14.4°C) and an average high of 76.1°F (24.5°C). As September takes hold, the average high-temperature is a still warm 76.1°F (24.5°C), nearly mirroring that of the previous month. Weather in September »
Weather in October
October, the same as September, is another comfortable autumn month in Rantoul, Illinois, with temperature in the range of an average low of 47.1°F (8.4°C) and an average high of 63.1°F (17.3°C). With the onset of October, Rantoul experiences a modest temperature adjustment, with the average high-temperature receding from a moderately hot 76.1°F (24.5°C) in September to an enjoyable 63.1°F (17.3°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a frosty month in Rantoul, Illinois, with an average temperature ranging between max 48.7°F (9.3°C) and min 35.6°F (2°C). November signals a significant shift in the average high-temperature, falling from October's enjoyable 63.1°F (17.3°C) to a chilly 48.7°F (9.3°C). Weather in November »
Weather in December
The first month of the winter, December, is also an icy month in Rantoul, Illinois, with an average temperature fluctuating between 27.5°F (-2.5°C) and 37.6°F (3.1°C). The shift from November to December involves a decrease in the average high-temperature, dropping from a chilly 48.7°F (9.3°C) to an icy 37.6°F (3.1°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
What is the coldest month in Rantoul?
In Rantoul, January is the month with the lowest recorded average temperatures, measuring a high of 31.5°F (-0.3°C) and a low of 19.8°F (-6.8°C).
How much does it rain in Rantoul?
Throughout the year, there are 121.5 rainfall days, and 13.46" (342mm) of precipitation is accumulated.
When does it snow in Rantoul?
Months with snowfall in Rantoul, Illinois, are January through April, November and December.
How much does it snow in Rantoul?
In Rantoul, during the entire year, snow falls for 26.9 days and aggregates up to 3.78" (96mm) of snow.
What is the month with the least sunshine in Rantoul?
With an average of 4h of sunshine, January has the least sunshine of the year in Rantoul, Illinois.
What is the month with the lowest UV index in Rantoul?
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.
What is the driest month in Rantoul?
The month with the least rainfall is February, when the rain falls for 4.6 days and typically collects 0.67" (17mm) of precipitation.
What is the snowiest month in Rantoul?
The month with the most snowfall is February, when snow falls for 7.3 days and typically aggregates up to 1.38" (35mm) of snow.
When is Daylight Saving Time (DST) in Rantoul?
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 rainiest month in Rantoul?
May is the month with the most rainfall in Rantoul. Rain falls for 14.8 days and accumulates 1.77" (45mm) of precipitation.
When it does not snow in Rantoul?
In Rantoul, Illinois, snow does not fall in May through October.
When are the longest days in Rantoul?
The month with the longest days is June, with an average of 15h and 0min of daylight.
What month has the most sunshine in Rantoul?
The month with the most sunshine in Rantoul is June, with an average of 10.1h of sunshine.
When is the highest UV index in Rantoul?
June through August, with an average maximum UV index of 6, are months with the highest UV index.
What part of the year is the hottest in Rantoul?
With average high and low temperatures of 81°F (27.2°C) and 64.8°F (18.2°C) respectively, July is Rantoul's warmest month.
What is the most humid month in Rantoul?
The most humid month is July, with an average relative humidity of 85%.
What is the least humid month in Rantoul?
With an average relative humidity of 71%, October is the least humid month in Rantoul.
What is the month with the shortest days in Rantoul?
December has the shortest days of the year in Rantoul, Illinois, with an average of 9h and 24min of daylight.
Average temperature
Rantoul, IL
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (31.5°F).
The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure
Rantoul, 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:
29.94"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:
30.12"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 (29.92"Hg).
Average wind speed
Rantoul, IL
- Average wind speed in January:
10.7mph - Average wind speed in February:
10.6mph - Average wind speed in March:
10.3mph - Average wind speed in April:
10.5mph - Average wind speed in May:
8.9mph - Average wind speed in June:
7.7mph
- Average wind speed in July:
6.5mph - Average wind speed in August:
6.4mph - Average wind speed in September:
7.4mph - Average wind speed in October:
9.4mph - Average wind speed in November:
10.1mph - Average wind speed in December:
10.1mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity
Rantoul, IL
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Rantoul, IL
- Average rainfall in January:
0.87" - Average rainfall in February:
0.67" - Average rainfall in March:
1.22" - Average rainfall in April:
1.57" - Average rainfall in May:
1.77" - Average rainfall in June:
1.57"
- Average rainfall in July:
1.38" - Average rainfall in August:
1.14" - Average rainfall in September:
0.75" - Average rainfall in October:
1.06" - Average rainfall in November:
0.75" - Average rainfall in December:
0.71"
The wettest month (with the highest rainfall) is May (1.77").
The driest month (with the least rainfall) is February (0.67").
Average rainfall days
Rantoul, IL
- Average rainfall days in January:
5.7 days - Average rainfall days in February:
4.6 days - Average rainfall days in March:
10.3 days - Average rainfall days in April:
12.8 days - Average rainfall days in May:
14.8 days - Average rainfall days in June:
14.2 days
- Average rainfall days in July:
13.9 days - Average rainfall days in August:
11.7 days - Average rainfall days in September:
9.9 days - Average rainfall days in October:
9.6 days - Average rainfall days in November:
7.1 days - Average rainfall days in December:
6.9 days
The month with the highest number of rainy days is May (14.8 days).
The month with the least rainy days is February (4.6 days).
Average snowfall
Rantoul, IL
The month with the highest snowfall is February (1.38").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Rantoul, IL
- Average snowfall days in January:
7.9 days - Average snowfall days in February:
7.3 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 days - Average snowfall days in October:
0.2 days - Average snowfall days in November:
1.7 days - Average snowfall days in December:
6.1 days
The month with the highest number of snowfall days is January (7.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Rantoul, 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 2min - Average sunshine in April:
8h and 0min - Average sunshine in May:
9h and 0min - 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 1min - 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
Rantoul, IL
- Average sunshine days in January:
19.8 days - Average sunshine days in February:
16.5 days - Average sunshine days in March:
16.8 days - Average sunshine days in April:
14.7 days - Average sunshine days in May:
13.2 days - Average sunshine days in June:
11.8 days
- Average sunshine days in July:
11.3 days - Average sunshine days in August:
14.8 days - Average sunshine days in September:
17.4 days - Average sunshine days in October:
18.8 days - Average sunshine days in November:
20.4 days - Average sunshine days in December:
19.4 days
The month with the most sunshine days is November (20.4 days).
The month with the least sunshine days is July (11.3 days).
Average UV index
Rantoul, 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
Rantoul, IL
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility
Rantoul, 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).
Rantoul, Illinois, USA
Weather forecast for your location
1. Click Locate me button
2. Allow the app to use your location
2. Allow the app to use your location