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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 Belvidere, Illinois, with an average temperature fluctuating between 25.9°F (-3.4°C) and 13.6°F (-10.2°C). The coldest period tends to be January, when average temperatures fluctuate between a high of 25.9°F (-3.4°C) and a low of 13.6°F (-10.2°C). Weather in January »
Weather in February
The last month of the winter, February, is another freezing cold month in Belvidere, Illinois, with an average temperature ranging between min 17.1°F (-8.3°C) and max 29.8°F (-1.2°C). On the advent of February, Belvidere's average high-temperature exhibits a minor adjustment to a still freezing cold 29.8°F (-1.2°C) from January's 25.9°F (-3.4°C). Weather in February »
Weather in March
March, the first month of the spring in Belvidere, is a frosty month, with an average temperature fluctuating between 28.9°F (-1.7°C) and 44.1°F (6.7°C). In Belvidere, the onset of March comes with an increased average high-temperature, moving from February's subzero cold 29.8°F (-1.2°C) to a chilly 44.1°F (6.7°C). Weather in March »
Weather in April
April is a refreshing spring month in Belvidere, Illinois, with an average temperature varying between 55.6°F (13.1°C) and 39°F (3.9°C). In Belvidere, stepping into April brings a temperature increase, moving up from March's chilly 44.1°F (6.7°C) to a mild 55.6°F (13.1°C). Weather in April »
Weather in May
The last month of the spring, May, is a comfortable month in Belvidere, Illinois, with an average temperature fluctuating between 50.5°F (10.3°C) and 67.8°F (19.9°C). With the onset of May, the average high-temperature slightly shifts from April's moderate 55.6°F (13.1°C) to a still refreshing 67.8°F (19.9°C). Weather in May »
Weather in June
The first month of the summer, June, is a moderately hot month in Belvidere, Illinois, with temperature in the range of an average low of 59.4°F (15.2°C) and an average high of 76.6°F (24.8°C). As Belvidere enters June, the average high-temperature marginally increases from the a comfortable 67.8°F (19.9°C) of May to a moderately hot 76.6°F (24.8°C). Weather in June »
Weather in July
July, like June, in Belvidere, Illinois, is another warm summer month, with temperature in the range of an average low of 62.8°F (17.1°C) and an average high of 79.9°F (26.6°C). Belvidere's warmest month, July, generally records average temperatures ranging from a high of 79.9°F (26.6°C) to a low of 62.8°F (17.1°C). Weather in July »
Weather in August
August, the last month of the summer in Belvidere, is another warm month, with temperature in the range of an average low of 60.4°F (15.8°C) and an average high of 78.1°F (25.6°C). The onset of August brings an average high-temperature of a still warm 78.1°F (25.6°C), nearly matching the July temperature. Weather in August »
Weather in September
September, the first month of the autumn in Belvidere, is still a pleasant month, with an average temperature varying between 54.1°F (12.3°C) and 72.3°F (22.4°C). September ushers in a minor alteration in Belvidere's climate, with the average high-temperature moving from August's warm 78.1°F (25.6°C) to a pleasant 72.3°F (22.4°C). Weather in September »
Weather in October
October, the same as September, in Belvidere, Illinois, is another refreshing autumn month, with an average temperature fluctuating between 59°F (15°C) and 43.2°F (6.2°C). In Belvidere, the beginning of October is marked by a lowered average high-temperature, shifting from September's pleasant 72.3°F (22.4°C) to a moderate 59°F (15°C). Weather in October »
Weather in November
November, the last month of the autumn in Belvidere, is another chilly month, with an average temperature varying between 44.6°F (7°C) and 31.3°F (-0.4°C). The drop of average high-temperatures is noticeable in November, with a decrease from a moderate 59°F (15°C) in October to a frosty 44.6°F (7°C). Weather in November »
Weather in December
December, the first month of the winter in Belvidere, is also an icy month, with an average temperature fluctuating between 22.3°F (-5.4°C) and 32.4°F (0.2°C). The onset of December results in a decrease in the average high-temperature, receding from a frosty 44.6°F (7°C) in November to a cold 32.4°F (0.2°C). Weather in December »
Updated: Aug 9, 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 part of the year is the coldest?
During the coldest month in Belvidere, January, temperatures average a high of 25.9°F (-3.4°C) and a low of 13.6°F (-10.2°C).
What is the most humid month?
With an average relative humidity of 86%, January is the most humid month.
How many days does it rain?
In Belvidere, during the entire year, the rain falls for 154 days and collects up to 30.47" (774mm) of precipitation.
When does it snow?
January through April, October through December are months with snowfall.
What is the snowiest month?
The month with the most snowfall in Belvidere is January, when snow falls for 12.6 days and typically aggregates up to 5.35" (136mm) of snow.
How much does it snow?
Throughout the year, there are 45.3 snowfall days, and 17.28" (439mm) of snow is accumulated.
What is the month with the least sunshine?
January has the least sunshine of the year, with an average of 3.7h of sunshine.
What are the months with the lowest UV index?
The months with the lowest UV index are January, November and December, with an average maximum UV index of 1.
What is the driest month?
February is the month with the least rainfall. Rain falls for 5.6 days and accumulates 1.46" (37mm) of precipitation.
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?
May through September are months without snowfall.
What is the wettest month?
The month with the most rainfall is June, when the rain falls for 17.8 days and typically aggregates up to 4.09" (104mm) of precipitation.
When are the longest days?
With an average of 15h and 12min of daylight, June has the longest days of the year.
What is the month with the highest UV index?
June is the month with the highest UV index in Belvidere, with an average maximum UV index of 6.
What part of the year is the hottest?
July, on average, is the warmest month, registering a high temperature of 79.9°F (26.6°C) and a low of 62.8°F (17.1°C).
What is the month with the most sunshine?
The months with the most sunshine are July and August, with an average of 9.7h of sunshine.
What is the least humid month?
October is the least humid month, with an average relative humidity of 75%.
What is the month with the shortest days?
With an average of 9h and 12min of daylight, December has the shortest days of the year.
Average temperature
Belvidere, IL
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (25.9°F).
The month with the highest average low temperature is July (62.8°F).
The coldest month (with the lowest average low temperature) is January (13.6°F).
Average pressure
Belvidere, IL
- Average pressure in January:
30.11"Hg - Average pressure in February:
30.1"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
29.95"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:
29.97"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30"Hg - Average pressure in November:
30.09"Hg - Average pressure in December:
30.09"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Belvidere, 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:
10mph - Average wind speed in May:
8.5mph - Average wind speed in June:
7.3mph
- Average wind speed in July:
6.4mph - Average wind speed in August:
6.2mph - Average wind speed in September:
7.2mph - Average wind speed in October:
8.8mph - Average wind speed in November:
9.4mph - Average wind speed in December:
9.2mph
The windiest month (with the highest average wind speed) is April (10mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity
Belvidere, IL
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is October (75%).
Average rainfall
Belvidere, IL
- Average rainfall in January:
1.61" - Average rainfall in February:
1.46" - Average rainfall in March:
1.89" - Average rainfall in April:
3.58" - Average rainfall in May:
3.86" - Average rainfall in June:
4.09"
- Average rainfall in July:
3.19" - Average rainfall in August:
2.8" - Average rainfall in September:
2.17" - Average rainfall in October:
2.64" - Average rainfall in November:
1.65" - Average rainfall in December:
1.54"
The wettest month (with the highest rainfall) is June (4.09").
The driest month (with the least rainfall) is February (1.46").
Average rainfall days
Belvidere, IL
- Average rainfall days in January:
5.7 days - Average rainfall days in February:
5.6 days - Average rainfall days in March:
11.8 days - Average rainfall days in April:
16.5 days - Average rainfall days in May:
18.9 days - Average rainfall days in June:
17.8 days
- Average rainfall days in July:
17.8 days - Average rainfall days in August:
16.3 days - Average rainfall days in September:
12.6 days - Average rainfall days in October:
13.5 days - Average rainfall days in November:
9.3 days - Average rainfall days in December:
8.2 days
The month with the highest number of rainy days is May (18.9 days).
The month with the least rainy days is February (5.6 days).
Average snowfall
Belvidere, IL
The month with the highest snowfall is January (5.35").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Belvidere, IL
- Average snowfall days in January:
12.6 days - Average snowfall days in February:
10.7 days - Average snowfall days in March:
5.5 days - Average snowfall days in April:
1.7 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:
0.6 days - Average snowfall days in November:
4 days - Average snowfall days in December:
10.2 days
The month with the highest number of snowfall days is January (12.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Belvidere, IL
- Average daylight in January:
9h and 3min - 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 4min - Average daylight in June:
15h and 1min
- Average daylight in July:
14h and 5min - Average daylight in August:
13h and 5min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 1min - Average daylight in November:
9h and 5min - Average daylight in December:
9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January:
3h and 4min - Average sunshine in February:
3h and 5min - Average sunshine in March:
6h and 1min - Average sunshine in April:
7h and 3min - Average sunshine in May:
8h and 3min - Average sunshine in June:
9h and 4min
- Average sunshine in July:
9h and 4min - Average sunshine in August:
9h and 4min - Average sunshine in September:
8h and 4min - Average sunshine in October:
5h and 2min - Average sunshine in November:
5h and 0min - Average sunshine in December:
4h and 0min
The months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days
Belvidere, IL
- Average sunshine days in January:
14 days - Average sunshine days in February:
13 days - Average sunshine days in March:
14.4 days - Average sunshine days in April:
11.1 days - Average sunshine days in May:
10.3 days - Average sunshine days in June:
10.2 days
- Average sunshine days in July:
10.3 days - Average sunshine days in August:
11.8 days - Average sunshine days in September:
15.1 days - Average sunshine days in October:
15.5 days - Average sunshine days in November:
17.3 days - Average sunshine days in December:
15.7 days
The month with the most sunshine days is November (17.3 days).
The month with the least sunshine days is June (10.2 days).
Average UV index
Belvidere, IL
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover
Belvidere, IL
The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are August and September (Cloud cover 34).
Average visibility
Belvidere, IL
The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).
Belvidere, Illinois, USA
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