Climate and monthly weather forecast
Belknap, IL

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Weather in January

January, like December, in Belknap, Illinois, is another cold winter month, with temperature in the range of an average high of 40.1°F (4.5°C) and an average low of 27°F (-2.8°C). In Belknap, January is the month with the lowest recorded average temperatures, measuring a high of 40.1°F (4.5°C) and a low of 27°F (-2.8°C). Weather in January »

Weather in February

The last month of the winter, February, is a chilly month in Belknap, Illinois, with an average temperature fluctuating between 45.1°F (7.3°C) and 30.7°F (-0.7°C). Belknap indicates an average high-temperature of a frosty 45.1°F (7.3°C) in February, showing minor variation from January's 40.1°F (4.5°C). Weather in February »

Weather in March

The first month of the spring, March, is a refreshing month in Belknap, Illinois, with temperature in the range of an average high of 55.8°F (13.2°C) and an average low of 39.7°F (4.3°C). Belknap's transition into March brings a rise in the average high-temperature, moving from a frosty 45.1°F (7.3°C) in February to a refreshing 55.8°F (13.2°C). Weather in March »

Weather in April

April in Belknap, Illinois, is a refreshing spring month, with an average temperature fluctuating between 48.9°F (9.4°C) and 66.6°F (19.2°C). With the arrival of April, the average high-temperature transitions from 55.8°F (13.2°C) in March to a still refreshing 66.6°F (19.2°C). Weather in April »

Weather in May

The last month of the spring, May, is a warm month in Belknap, Illinois, with an average temperature varying between 57.9°F (14.4°C) and 75.7°F (24.3°C). Belknap's weather shows a temperature rise with the arrival of May, moving from a refreshing 66.6°F (19.2°C) in April to a warm 75.7°F (24.3°C). Weather in May »

Weather in June

The first month of the summer, June, is still a warm month in Belknap, Illinois, with an average temperature ranging between max 85.6°F (29.8°C) and min 66.2°F (19°C). The transition from May to June brings a temperature rise, with average high-temperatures increasing from a moderately hot 75.7°F (24.3°C) to a still warm 85.6°F (29.8°C). Weather in June »

Weather in July

July is a tropical summer month in Belknap, Illinois, with temperature in the range of an average low of 68.5°F (20.3°C) and an average high of 88°F (31.1°C). In Belknap, the month of July is known for its highest average temperatures, reaching a high of 88°F (31.1°C) and a low of 68.5°F (20.3°C). For July, the heat index is computed to be a blistering 104°F (40°C). Weather in July »

Weather in August

August, the last month of the summer in Belknap, is another hot month, with an average temperature varying between 86.5°F (30.3°C) and 66.7°F (19.3°C). The weather during August records an average high-temperature of a still hot 86.5°F (30.3°C), closely mirroring the preceding month. Weather in August »

Weather in September

The first month of the autumn, September, is also a moderately hot month in Belknap, Illinois, with an average temperature varying between 81.1°F (27.3°C) and 60.6°F (15.9°C). In September, the meteorological conditions change slightly, with the average high-temperature moving from a hot 86.5°F (30.3°C) in August to a warm 81.1°F (27.3°C). Weather in September »

Weather in October

October, the same as September, is another refreshing autumn month in Belknap, Illinois, with an average temperature ranging between min 49.6°F (9.8°C) and max 67.8°F (19.9°C). October implies a gentle temperature shift, with average high-temperatures reducing from September's moderately hot 81.1°F (27.3°C) to a comfortable 67.8°F (19.9°C). Weather in October »

Weather in November

November, the last month of the autumn in Belknap, is also a fresh month, with an average temperature ranging between max 54.5°F (12.5°C) and min 38.8°F (3.8°C). With November's onset, the weather shows a temperature decrease, transitioning from a refreshing 67.8°F (19.9°C) in October to a fresh 54.5°F (12.5°C). Weather in November »

Weather in December

December, the first month of the winter in Belknap, is also a frosty month, with an average temperature fluctuating between 32.7°F (0.4°C) and 44.8°F (7.1°C). As November shifts into December, a slight alteration in temperatures is observed, with average highs reducing from a fresh 54.5°F (12.5°C) to a frosty 44.8°F (7.1°C). Weather in December »
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest time of year in Belknap?

January, having an average high-temperature of 40.1°F (4.5°C) and an average low-temperature of 27°F (-2.8°C), is the coldest month in Belknap, Illinois.

How many days does it rain in Belknap?

Throughout the year, in Belknap, Illinois, there are 118.3 rainfall days, and 13.03" (331mm) of precipitation is accumulated.

When does it snow in Belknap?

January through March, November and December are months with snowfall in Belknap, Illinois.

How many days does it snow in Belknap?

Throughout the year, in Belknap, there are 11 snowfall days, and 1.57" (40mm) of snow is accumulated.

What are the months with the least sunshine in Belknap?

The months with the least sunshine in Belknap, Illinois, are January and February, with an average of 4.6h of sunshine.

What is the month with the lowest UV index in Belknap?

January, February and December, with an average maximum UV index of 2, are months with the lowest UV index.

What is the snowiest month in Belknap?

February is the month with the most snowfall. Snow falls for 3.2 days and accumulates 0.67" (17mm) of snow.

What are the most humid months in Belknap?

The months with the highest humidity in Belknap are March and May, with an average relative humidity of 79%.

When is Daylight Saving Time (DST) in Belknap?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Belknap, Illinois, 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 in Belknap?

April through October are months without snowfall in Belknap.

What are the months with the highest UV index in Belknap?

May through August, with an average maximum UV index of 6, are months with the highest UV index in Belknap.

What is the wettest month in Belknap?

June is the month with the most rainfall in Belknap, Illinois. Rain falls for 12.5 days and accumulates 1.5" (38mm) of precipitation.

When are the longest days in Belknap?

June has the longest days of the year in Belknap, Illinois, with an average of 14h and 42min of daylight.

What is the month with the most sunshine in Belknap?

The months with the most sunshine are June and July, with an average of 10.4h of sunshine.

What month is the hottest in Belknap?

Belknap's July weather reaches an average high of 88°F (31.1°C) and an average low of 68.5°F (20.3°C), making it the warmest month.

What is the driest month in Belknap?

September is the month with the least rainfall in Belknap, Illinois. Rain falls for 8.3 days and accumulates 0.47" (12mm) of precipitation.

What is the least humid month in Belknap?

With an average relative humidity of 71%, October is the least humid month in Belknap, Illinois.

What is the month with the shortest days in Belknap?

With an average of 9h and 36min of daylight, December has the shortest days of the year.

Average temperature
Belknap, IL

Average temperature - Belknap, IL

The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (40.1°F).

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (27°F).

Average pressure
Belknap, IL

Average pressure - Belknap, IL

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed
Belknap, IL

Average wind speed - Belknap, IL

The windiest months (with the highest average wind speed) are January and February (9mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).

Average humidity
Belknap, IL

Average humidity - Belknap, IL

The months with the highest relative humidity are March and May (79%).
The month with the lowest relative humidity is October (71%).

Average rainfall
Belknap, IL

Average rainfall - Belknap, IL

The wettest month (with the highest rainfall) is June (1.5").
The driest month (with the least rainfall) is September (0.47").

Average rainfall days
Belknap, IL

Average rainfall days - Belknap, IL

The month with the highest number of rainy days is July (13.1 days).
The months with the least rainy days are January, February and December (7.3 days).

Average snowfall
Belknap, IL

Average snowfall - Belknap, IL

The month with the highest snowfall is February (0.67").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days
Belknap, IL

Average snowfall days - Belknap, IL

The month with the highest number of snowfall days is January (3.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight / Average sunshine
Belknap, IL

Average daylight / Average sunshine - Belknap, IL

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).

The months with the most sunshine are June and July (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 36min).

Average sunshine days
Belknap, IL

Average sunshine days - Belknap, IL

The month with the most sunshine days is October (21.5 days).
The month with the least sunshine days is June (14.8 days).

Average UV index
Belknap, IL

Average UV index - Belknap, 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 visibility
Belknap, IL

Average visibility - Belknap, 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).

Belknap, Illinois, USA

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