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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 Windsor, Illinois, is another cold winter month, with an average temperature fluctuating between 21.9°F (-5.6°C) and 34.3°F (1.3°C). With an average high-temperature of 34.3°F (1.3°C) and an average low-temperature of 21.9°F (-5.6°C), January is the coldest month. Weather in January »
Weather in February
The last month of the winter, February, is also an icy month in Windsor, Illinois, with an average temperature varying between 39.2°F (4°C) and 25.9°F (-3.4°C). Welcoming February, Windsor notes an average high-temperature of a still wintry 39.2°F (4°C), nearly consistent with January's 34.3°F (1.3°C). Weather in February »
Weather in March
March, the first month of the spring in Windsor, is a fresh month, with temperature in the range of an average low of 36.1°F (2.3°C) and an average high of 51.3°F (10.7°C). The start of March brings a rise in the average high-temperature, moving from an icy 39.2°F (4°C) in February to a cool 51.3°F (10.7°C). Weather in March »
Weather in April
April in Windsor, Illinois, is an enjoyable spring month, with an average temperature varying between 62.6°F (17°C) and 46.4°F (8°C). The arrival of April brings a temperature shift, with the average high-temperature escalating from a cool 51.3°F (10.7°C) in March to a comfortable 62.6°F (17°C). Weather in April »
Weather in May
May, the last month of the spring in Windsor, is a pleasant month, with an average temperature ranging between min 56.7°F (13.7°C) and max 73°F (22.8°C). Windsor's weather in May presents a rise in the average high-temperature, moving from an enjoyable 62.6°F (17°C) in April to a pleasant 73°F (22.8°C). Weather in May »
Weather in June
June, the first month of the summer in Windsor, is a warm month, with an average temperature varying between 81.1°F (27.3°C) and 64.6°F (18.1°C). With the transition into June, Windsor experiences a subtle uplift in average high-temperatures, adjusting from a pleasant 73°F (22.8°C) in May to a warm 81.1°F (27.3°C). Weather in June »
Weather in July
July, like June, in Windsor, Illinois, is another warm summer month, with an average temperature ranging between max 82.8°F (28.2°C) and min 66.2°F (19°C). July stands out as Windsor's warmest month, with an average high-temperature of 82.8°F (28.2°C) and a low-temperature of 66.2°F (19°C). July's average heat index is computed to be a hot 91.4°F (33°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Windsor, Illinois, with temperature in the range of an average high of 81.7°F (27.6°C) and an average low of 64°F (17.8°C). In August, Windsor experiences a minor shift in meteorological conditions with average high-temperatures marked at a still warm 81.7°F (27.6°C), closely mirroring the climate in July. Weather in August »
Weather in September
The first month of the autumn, September, is also a moderately hot month in Windsor, Illinois, with temperature in the range of an average low of 58.6°F (14.8°C) and an average high of 77.2°F (25.1°C). Windsor records an average high-temperature of a still warm 77.2°F (25.1°C) in September, maintaining a close correlation with August's 81.7°F (27.6°C). Weather in September »
Weather in October
October, the same as September, is another enjoyable autumn month in Windsor, Illinois, with an average temperature fluctuating between 48.2°F (9°C) and 64.2°F (17.9°C). The beginning of October involves a decrease in the average high-temperature, transitioning from a moderately hot 77.2°F (25.1°C) in September to an enjoyable 64.2°F (17.9°C). Weather in October »
Weather in November
November, the last month of the autumn in Windsor, is another cool month, with an average temperature ranging between min 36.5°F (2.5°C) and max 50.4°F (10.2°C). A moderate decline in the average high-temperature is seen during November, decreasing from a comfortable 64.2°F (17.9°C) in October to a cool 50.4°F (10.2°C). Weather in November »
Weather in December
December, the first month of the winter in Windsor, is still a cold month, with temperature in the range of an average high of 39.2°F (4°C) and an average low of 28.4°F (-2°C). In December, the average high-temperature decreases from a cool 50.4°F (10.2°C) in November to a wintry 39.2°F (4°C). Weather in December »
Updated: Jul 17, 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 time of the year is the coldest?
January tends to be the coldest month, with temperatures averaging a daily high of 34.3°F (1.3°C) and a low of 21.9°F (-5.6°C).
How much does it rain?
In Windsor, during the entire year, the rain falls for 116.5 days and collects up to 11.54" (293mm) of precipitation.
When does it snow?
Months with snowfall are January through March, November and December.
How much does it snow?
Throughout the year, there are 19 snowfall days, and 2.8" (71mm) of snow is accumulated.
What is the month with the least sunshine?
January has the least sunshine of the year, with an average of 4.1h of sunshine.
What are the months with the lowest UV index?
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Windsor.
What is the driest month?
February is the month with the least rainfall. Rain falls for 4.9 days and accumulates 0.55" (14mm) of precipitation.
What is the snowiest month?
The month with the most snowfall is February, when snow falls for 5.9 days and typically aggregates up to 0.83" (21mm) 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.
When it does not snow?
April through October are months without snowfall.
What is the rainiest month?
June is the month with the most rainfall. Rain falls for 12.7 days and accumulates 1.46" (37mm) of precipitation.
When are the longest days?
June has the longest days of the year, with an average of 14h and 54min of daylight.
What month has the most sunshine?
With an average of 10.4h of sunshine, June has the most sunshine of the year.
What is the month with the highest UV index?
The months with the highest UV index are June through August, with an average maximum UV index of 6.
What are the warmest months in Windsor?
July, recording an average high temperature of 82.8°F (28.2°C) and a low temperature of 66.2°F (19°C), is Windsor's warmest month.
What is the most humid month?
With an average relative humidity of 83%, July is the most humid month.
What is the least humid month?
With an average relative humidity of 70%, October is the least humid month.
What is the month with the shortest days?
With an average of 9h and 24min of daylight, December has the shortest days of the year.
Average temperature
Windsor, IL
The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (34.3°F).
The month with the highest average low temperature is July (66.2°F).
The coldest month (with the lowest average low temperature) is January (21.9°F).
Average pressure
Windsor, IL
- Average pressure in January:
30.15"Hg - Average pressure in February:
30.12"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:
30.03"Hg - Average pressure in November:
30.13"Hg - Average pressure in December:
30.13"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Windsor, IL
- Average wind speed in January:
10.7mph - Average wind speed in February:
10.5mph - Average wind speed in March:
10.3mph - Average wind speed in April:
10.4mph - Average wind speed in May:
8.6mph - Average wind speed in June:
7.4mph
- Average wind speed in July:
6.2mph - Average wind speed in August:
6.2mph - Average wind speed in September:
7mph - Average wind speed in October:
9.1mph - Average wind speed in November:
9.9mph - Average wind speed in December:
9.8mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).
Average humidity
Windsor, IL
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (70%).
Average rainfall
Windsor, IL
- Average rainfall in January:
0.71" - Average rainfall in February:
0.55" - Average rainfall in March:
0.87" - Average rainfall in April:
1.3" - Average rainfall in May:
1.26" - Average rainfall in June:
1.46"
- Average rainfall in July:
1.22" - Average rainfall in August:
1.22" - Average rainfall in September:
0.79" - Average rainfall in October:
0.91" - Average rainfall in November:
0.59" - Average rainfall in December:
0.67"
The wettest month (with the highest rainfall) is June (1.46").
The driest month (with the least rainfall) is February (0.55").
Average rainfall days
Windsor, IL
- Average rainfall days in January:
5.1 days - Average rainfall days in February:
4.9 days - Average rainfall days in March:
10.2 days - Average rainfall days in April:
13.1 days - Average rainfall days in May:
14.3 days - Average rainfall days in June:
12.7 days
- Average rainfall days in July:
13.5 days - Average rainfall days in August:
10.9 days - Average rainfall days in September:
9.9 days - Average rainfall days in October:
8.6 days - Average rainfall days in November:
7.4 days - Average rainfall days in December:
5.9 days
The month with the highest number of rainy days is May (14.3 days).
The month with the least rainy days is February (4.9 days).
Average snowfall
Windsor, IL
The month with the highest snowfall is February (0.83").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days
Windsor, IL
- Average snowfall days in January:
5.5 days - Average snowfall days in February:
5.9 days - Average snowfall days in March:
2.3 days - Average snowfall days in April:
0.2 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 days - Average snowfall days in November:
1.1 days - Average snowfall days in December:
4 days
The month with the highest number of snowfall days is February (5.9 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Windsor, IL
- Average daylight in January:
9h and 5min - 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:
14h and 5min
- 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: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in January:
4h and 1min - Average sunshine in February:
4h and 2min - Average sunshine in March:
6h and 2min - Average sunshine in April:
8h and 0min - Average sunshine in May:
9h and 1min - Average sunshine in June:
10h and 2min
- Average sunshine in July:
10h and 0min - Average sunshine in August:
9h and 5min - Average sunshine in September:
9h and 0min - 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 24min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days
Windsor, IL
- Average sunshine days in January:
21.3 days - Average sunshine days in February:
18.3 days - Average sunshine days in March:
17.3 days - Average sunshine days in April:
15.8 days - Average sunshine days in May:
14.5 days - Average sunshine days in June:
13.5 days
- Average sunshine days in July:
13.9 days - Average sunshine days in August:
16.8 days - Average sunshine days in September:
18.6 days - Average sunshine days in October:
20.9 days - Average sunshine days in November:
20.7 days - Average sunshine days in December:
22.1 days
The month with the most sunshine days is December (22.1 days).
The month with the least sunshine days is June (13.5 days).
Average UV index
Windsor, 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
Windsor, IL
The months with the most cloud cover are January and February (Cloud cover 55).
The months with the least cloud cover are June and September (Cloud cover 30).
Average visibility
Windsor, IL
The months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (6mi).
The month with the lowest visibility is August (5mi).
Windsor, Illinois, USA
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