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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, like December, is a freezing cold winter month in Collison, Illinois, with temperature in the range of an average high of 31.6°F (-0.2°C) and an average low of 20.5°F (-6.4°C). Collison, Illinois, reaches its lowest average temperatures in January, measuring 31.6°F (-0.2°C) at the peak and 20.5°F (-6.4°C) at the lowest. Weather in January »
Weather in February
The last month of the winter, February, is an icy month in Collison, Illinois, with an average temperature ranging between min 23.9°F (-4.5°C) and max 37°F (2.8°C). As January transitions into February, a subtle temperature shift is observed, with average highs adjusting from a freezing cold 31.6°F (-0.2°C) to an icy 37°F (2.8°C). Weather in February »
Weather in March
The first month of the spring, March, is a chilly month in Collison, Illinois, with an average temperature fluctuating between 34.9°F (1.6°C) and 49.1°F (9.5°C). March sees a rise in the average high-temperature, climbing from a cold 37°F (2.8°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 Collison, Illinois, with an average temperature ranging between min 45°F (7.2°C) and max 61.2°F (16.2°C). The arrival of April brings an increase in high-temperatures, moving from a frosty 49.1°F (9.5°C) in March to an enjoyable 61.2°F (16.2°C). Weather in April »
Weather in May
May, the last month of the spring in Collison, is an agreeable month, with an average temperature fluctuating between 71.8°F (22.1°C) and 55°F (12.8°C). With the onset of May, Collison sees a temperature rise, with the average high-temperature moving from April's enjoyable 61.2°F (16.2°C) to an agreeable 71.8°F (22.1°C). Weather in May »
Weather in June
June, the first month of the summer in Collison, is a warm month, with temperature in the range of an average low of 63.3°F (17.4°C) and an average high of 79.9°F (26.6°C). Collison's weather shows a minor temperature rise with the arrival of June, moving from a pleasant 71.8°F (22.1°C) in May to a warm 79.9°F (26.6°C). Weather in June »
Weather in July
July, like June, in Collison, Illinois, is another warm summer month, with an average temperature fluctuating between 64.9°F (18.3°C) and 81.3°F (27.4°C). With its high average temperature of 81.3°F (27.4°C) and a low of 64.9°F (18.3°C), July is regarded as the warmest month. July's heat index is computed to be a tropical 87.8°F (31°C). Weather in July »
Weather in August
August, the last month of the summer in Collison, is another warm month, with an average temperature ranging between min 63.3°F (17.4°C) and max 80.6°F (27°C). August's weather records an average high-temperature of a still moderately hot 80.6°F (27°C), showing little deviation from July. Weather in August »
Weather in September
September, the first month of the autumn in Collison, is still a warm month, with temperature in the range of an average low of 57.7°F (14.3°C) and an average high of 76.1°F (24.5°C). Collison commences September with an average high-temperature of a still warm 76.1°F (24.5°C), maintaining a close resemblance to the previous month. Weather in September »
Weather in October
October, like September, in Collison, Illinois, is another comfortable autumn month, with an average temperature fluctuating between 63.1°F (17.3°C) and 47.1°F (8.4°C). The beginning of October involves a decrease in the average high-temperature, transitioning from a moderately hot 76.1°F (24.5°C) in September to a comfortable 63.1°F (17.3°C). Weather in October »
Weather in November
November, the last month of the autumn in Collison, is another chilly month, with an average temperature ranging between max 48.9°F (9.4°C) and min 35.6°F (2°C). With the onset of November, Collison experiences a modest temperature adjustment, with the average high-temperature receding from a comfortable 63.1°F (17.3°C) in October to a frosty 48.9°F (9.4°C). Weather in November »
Weather in December
The first month of the winter, December, is also an icy month in Collison, Illinois, with an average temperature varying between 37.6°F (3.1°C) and 27.5°F (-2.5°C). December's arrival coincides with a drop in the average high-temperature, decreasing from November's frosty 48.9°F (9.4°C) to a wintry 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 Collison?
Collison, Illinois, notes the coldest temperatures in January, with a average high of 31.6°F (-0.2°C) and a low of 20.5°F (-6.4°C).
How much does it rain in Collison?
In Collison, Illinois, during the entire year, the rain falls for 151.8 days and collects up to 25.63" (651mm) of precipitation.
When does it snow in Collison?
Months with snowfall in Collison, Illinois, are January through April, November and December.
How much does it snow in Collison?
In Collison, during the entire year, snow falls for 35.2 days and aggregates up to 8.82" (224mm) of snow.
What is the month with the least sunshine in Collison?
January has the least sunshine of the year, with an average of 4h of sunshine.
What are the months with the lowest UV index in Collison?
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Collison.
What is the driest month in Collison?
February and September are months with the least rain in Collison, Illinois, when the rain falls for 6.6 days and typically aggregates up to 1.38" (35mm) of rain.
What is the snowiest month in Collison?
February is the month with the most snowfall in Collison. Snow falls for 8.9 days and accumulates 2.64" (67mm) of snow.
When is Daylight Saving Time (DST) in Collison?
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 wettest month in Collison?
The month with the most rainfall is April, when the rain falls for 15.3 days and typically aggregates up to 3.23" (82mm) of precipitation.
When it does not snow in Collison?
May through October are months without snowfall in Collison.
When are the longest days in Collison?
June has the longest days of the year, with an average of 15h and 0min of daylight.
What month has the most sunshine in Collison?
With an average of 10.1h of sunshine, June has the most sunshine of the year.
What is the month with the highest UV index in Collison?
The months with the highest UV index in Collison are June through August, with an average maximum UV index of 6.
What part of the year is the hottest in Collison?
July is Collison's warmest month, registering average high temperatures of 81.3°F (27.4°C) and lows of 64.9°F (18.3°C).
What is the most humid month in Collison?
July is the most humid month, with an average relative humidity of 84%.
What is the least humid month in Collison?
With an average relative humidity of 72%, October is the least humid month in Collison.
What is the month with the shortest days in Collison?
December has the shortest days of the year in Collison, Illinois, with an average of 9h and 24min of daylight.
Average temperature
Collison, IL
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (31.6°F).
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).
Average pressure
Collison, 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:
29.95"Hg - Average pressure in May:
29.96"Hg - Average pressure in June:
29.93"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:
30.02"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 (29.93"Hg).
Average wind speed
Collison, IL
- Average wind speed in January:
10.4mph - Average wind speed in February:
10.3mph - Average wind speed in March:
9.9mph - Average wind speed in April:
10.2mph - Average wind speed in May:
8.6mph - Average wind speed in June:
7.5mph
- Average wind speed in July:
6.2mph - Average wind speed in August:
6.2mph - Average wind speed in September:
7.1mph - Average wind speed in October:
9.1mph - Average wind speed in November:
9.8mph - Average wind speed in December:
9.7mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).
Average humidity
Collison, IL
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall
Collison, IL
- Average rainfall in January:
1.61" - Average rainfall in February:
1.38" - Average rainfall in March:
2.32" - Average rainfall in April:
3.23" - Average rainfall in May:
3.15" - Average rainfall in June:
2.91"
- Average rainfall in July:
2.44" - Average rainfall in August:
2.24" - Average rainfall in September:
1.38" - Average rainfall in October:
2.05" - Average rainfall in November:
1.46" - Average rainfall in December:
1.46"
The wettest month (with the highest rainfall) is April (3.23").
The driest months (with the least rainfall) are February and September (1.38").
Average rainfall days
Collison, IL
- Average rainfall days in January:
7.3 days - Average rainfall days in February:
6.6 days - Average rainfall days in March:
12.3 days - Average rainfall days in April:
15.3 days - Average rainfall days in May:
18 days - Average rainfall days in June:
17.3 days
- Average rainfall days in July:
17.8 days - Average rainfall days in August:
14.6 days - Average rainfall days in September:
12.5 days - Average rainfall days in October:
12.4 days - Average rainfall days in November:
8.9 days - Average rainfall days in December:
8.8 days
The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is February (6.6 days).
Average snowfall
Collison, IL
The month with the highest snowfall is February (2.64").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Collison, IL
- Average snowfall days in January:
10.6 days - Average snowfall days in February:
8.9 days - Average snowfall days in March:
4.3 days - Average snowfall days in April:
0.9 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:
0.1 days - Average snowfall days in November:
2.5 days - Average snowfall days in December:
7.9 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
Collison, 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 1min - Average sunshine in April:
8h and 1min - Average sunshine in May:
8h and 5min - 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 2min - 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
Collison, IL
- Average sunshine days in January:
15 days - Average sunshine days in February:
13.1 days - Average sunshine days in March:
14.6 days - Average sunshine days in April:
11.6 days - Average sunshine days in May:
10 days - Average sunshine days in June:
10.2 days
- Average sunshine days in July:
9.5 days - Average sunshine days in August:
11.9 days - Average sunshine days in September:
15.2 days - Average sunshine days in October:
16.5 days - Average sunshine days in November:
18 days - Average sunshine days in December:
15.6 days
The month with the most sunshine days is November (18 days).
The month with the least sunshine days is July (9.5 days).
Average UV index
Collison, 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
Collison, IL
The month with the most cloud cover is January (Cloud cover 58).
The months with the least cloud cover are June, August and September (Cloud cover 32).
Average visibility
Collison, 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).
Collison, Illinois, USA
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