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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, in Cottonwood, Illinois, is another cold winter month, with an average temperature varying between 26.8°F (-2.9°C) and 39.7°F (4.3°C). In Cottonwood, the month of January registers the lowest temperatures, averaging 39.7°F (4.3°C) at the peak and 26.8°F (-2.9°C) at the lowest. Weather in January »
Weather in February
The last month of the winter, February, is a chilly month in Cottonwood, Illinois, with an average temperature varying between 44.6°F (7°C) and 30.6°F (-0.8°C). The arrival of February marks a slight shift to an average high-temperature of a chilly 44.6°F (7°C) from January's 39.7°F (4.3°C). Weather in February »
Weather in March
The first month of the spring, March, is a refreshing month in Cottonwood, Illinois, with temperature in the range of an average high of 55.4°F (13°C) and an average low of 39.6°F (4.2°C). The shift into March is characterized by a rise in the average high-temperature, transitioning from February's chilly 44.6°F (7°C) to a mild 55.4°F (13°C). Weather in March »
Weather in April
April is an enjoyable spring month in Cottonwood, Illinois, with an average temperature varying between 66.4°F (19.1°C) and 48.9°F (9.4°C). The arrival of April brings an increase in high-temperatures, moving from 55.4°F (13°C) in March to a still 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 Cottonwood, Illinois, with temperature in the range of an average high of 75.6°F (24.2°C) and an average low of 58.3°F (14.6°C). The beginning of May marks a shift in the average high-temperature, moving from April's comfortable 66.4°F (19.1°C) to a warm 75.6°F (24.2°C). Weather in May »
Weather in June
The first month of the summer, June, is also a moderately hot month in Cottonwood, Illinois, with an average temperature ranging between max 84°F (28.9°C) and min 66.4°F (19.1°C). As June sets, the average high-temperature shows a slight increase, moving up from a moderately hot 75.6°F (24.2°C) in May to a still warm 84°F (28.9°C). Weather in June »
Weather in July
July is a tropical summer month in Cottonwood, Illinois, with an average temperature varying between 68.4°F (20.2°C) and 86.2°F (30.1°C). July, having an average high-temperature of 86.2°F (30.1°C) and an average low-temperature of 68.4°F (20.2°C), is the warmest month. Throughout July, the heat index is evaluated at a fiery hot 98.6°F (37°C). Weather in July »
Weather in August
August, the last month of the summer in Cottonwood, is also a moderately hot month, with an average temperature ranging between max 84.9°F (29.4°C) and min 66.2°F (19°C). August's advent notes a subtle adjustment in average high-temperature to a moderately hot 84.9°F (29.4°C) from July. Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Cottonwood, Illinois, with an average temperature varying between 60.8°F (16°C) and 79.9°F (26.6°C). Cottonwood, Illinois, experiences a subtle adjustment in high-temperatures to a still warm 79.9°F (26.6°C) with the onset of September, maintaining near parity with August's 84.9°F (29.4°C). Weather in September »
Weather in October
October, the same as September, is another comfortable autumn month in Cottonwood, Illinois, with an average temperature fluctuating between 49.6°F (9.8°C) and 67.8°F (19.9°C). The move into October indicates a reduction in the average high-temperature, down from September's moderately hot 79.9°F (26.6°C) to an enjoyable 67.8°F (19.9°C). Weather in October »
Weather in November
November, the last month of the autumn in Cottonwood, is another cool month, with an average temperature fluctuating between 54.1°F (12.3°C) and 38.8°F (3.8°C). November weather is marked by a drop in the average high-temperature, falling from an enjoyable 67.8°F (19.9°C) in October to a fresh 54.1°F (12.3°C). Weather in November »
Weather in December
The first month of the winter, December, is also a frosty month in Cottonwood, Illinois, with an average temperature ranging between max 44.6°F (7°C) and min 32.9°F (0.5°C). A shift in Cottonwood's weather is observed as November turns into December, with the average high temperature reducing from a fresh 54.1°F (12.3°C) to a chilly 44.6°F (7°C). Weather in December »
Updated: Aug 26, 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 month is the coldest?
Cottonwood's January weather reaches an average high of 39.7°F (4.3°C) and an average low of 26.8°F (-2.9°C), making it the coldest month.
How many days does it rain?
Throughout the year, in Cottonwood, there are 146.3 rainfall days, and 24.96" (634mm) of precipitation is accumulated.
When does it snow?
Months with snowfall are January through April, November and December.
How much does it snow?
In Cottonwood, during the entire year, snow falls for 15.9 days and aggregates up to 3.58" (91mm) of snow.
What is the month with the least sunshine?
The month with the least sunshine is January, with an average of 4.5h of sunshine.
When is the lowest UV index?
The months with the lowest UV index in Cottonwood are January, February and December, with an average maximum UV index of 2.
What is the snowiest month?
The month with the most snowfall is February, when snow falls for 4.3 days and typically aggregates up to 0.87" (22mm) of snow.
When is Daylight Saving Time (DST)?
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?
April is the month with the most rainfall. Rain falls for 14.7 days and accumulates 3.27" (83mm) of precipitation.
What is the most humid month?
With an average relative humidity of 80%, May is the most humid month.
When it does not snow?
In Cottonwood, snow does not fall in May through October.
When is the highest UV index?
The months with the highest UV index are May through August, with an average maximum UV index of 6.
When are the longest days?
The month with the longest days is June, with an average of 14h and 42min of daylight.
What is the warmest month?
Cottonwood's warmest month, July, generally records average temperatures ranging from a high of 86.2°F (30.1°C) to a low of 68.4°F (20.2°C).
What month has the most sunshine in Cottonwood?
With an average of 10.6h of sunshine, July has the most sunshine of the year.
What is the driest month?
The month with the least rainfall in Cottonwood is September, when the rain falls for 10.8 days and typically collects 1.14" (29mm) of precipitation.
What is the least humid month?
October is the least humid month, with an average relative humidity of 70%.
What is the month with the shortest days?
With an average of 9h and 36min of daylight, December has the shortest days of the year.
Average temperature
Cottonwood, IL
The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is January (39.7°F).
The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (26.8°F).
Average pressure
Cottonwood, IL
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
29.96"Hg - Average pressure in May:
29.98"Hg - Average pressure in June:
29.95"Hg
- Average pressure in July:
29.98"Hg - Average pressure in August:
29.99"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30.05"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 (29.95"Hg).
Average wind speed
Cottonwood, IL
- Average wind speed in January:
9.7mph - Average wind speed in February:
9.8mph - Average wind speed in March:
9.6mph - Average wind speed in April:
9.6mph - Average wind speed in May:
8mph - Average wind speed in June:
6.7mph
- Average wind speed in July:
5.8mph - Average wind speed in August:
5.8mph - Average wind speed in September:
6.5mph - Average wind speed in October:
8.2mph - Average wind speed in November:
8.8mph - Average wind speed in December:
9.1mph
The windiest month (with the highest average wind speed) is February (9.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).
Average humidity
Cottonwood, IL
The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is October (70%).
Average rainfall
Cottonwood, IL
- Average rainfall in January:
1.97" - Average rainfall in February:
2.17" - Average rainfall in March:
2.28" - Average rainfall in April:
3.27" - Average rainfall in May:
2.4" - Average rainfall in June:
2.24"
- Average rainfall in July:
2.05" - Average rainfall in August:
1.77" - Average rainfall in September:
1.14" - Average rainfall in October:
1.77" - Average rainfall in November:
1.85" - Average rainfall in December:
2.05"
The wettest month (with the highest rainfall) is April (3.27").
The driest month (with the least rainfall) is September (1.14").
Average rainfall days
Cottonwood, IL
- Average rainfall days in January:
9.3 days - Average rainfall days in February:
9.8 days - Average rainfall days in March:
13.5 days - Average rainfall days in April:
14.7 days - Average rainfall days in May:
16.7 days - Average rainfall days in June:
14.3 days
- Average rainfall days in July:
15 days - Average rainfall days in August:
13.3 days - Average rainfall days in September:
10.8 days - Average rainfall days in October:
9.5 days - Average rainfall days in November:
9 days - Average rainfall days in December:
10.4 days
The month with the highest number of rainy days is May (16.7 days).
The month with the least rainy days is November (9 days).
Average snowfall
Cottonwood, IL
The month with the highest snowfall is February (0.87").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Cottonwood, IL
- Average snowfall days in January:
4.8 days - Average snowfall days in February:
4.3 days - Average snowfall days in March:
1.8 days - Average snowfall days in April:
0.3 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:
1.1 days - Average snowfall days in December:
3.5 days
The month with the highest number of snowfall days is January (4.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Cottonwood, 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 3min - Average sunshine in February:
4h and 5min - Average sunshine in March:
6h and 2min - Average sunshine in April:
8h and 5min - Average sunshine in May:
9h and 2min - Average sunshine in June:
10h and 3min
- Average sunshine in July:
10h and 4min - Average sunshine in August:
10h and 2min - Average sunshine in September:
9h and 1min - Average sunshine in October:
6h and 5min - Average sunshine in November:
5h and 4min - Average sunshine in December:
4h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days
Cottonwood, IL
- Average sunshine days in January:
17 days - Average sunshine days in February:
14.6 days - Average sunshine days in March:
14.1 days - Average sunshine days in April:
13.3 days - Average sunshine days in May:
11.2 days - Average sunshine days in June:
12.1 days
- Average sunshine days in July:
12.3 days - Average sunshine days in August:
15.3 days - Average sunshine days in September:
17 days - Average sunshine days in October:
20.5 days - Average sunshine days in November:
19.3 days - Average sunshine days in December:
17.2 days
The month with the most sunshine days is October (20.5 days).
The month with the least sunshine days is May (11.2 days).
Average UV index
Cottonwood, 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
Cottonwood, IL
The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is June (Cloud cover 27).
Average visibility
Cottonwood, 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).
Cottonwood, Illinois, USA
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