Climate and monthly weather forecast
Granville, IL

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Weather in January

January, the same as December, in Granville, Illinois, is another subzero cold winter month, with an average temperature fluctuating between 28.9°F (-1.7°C) and 16.9°F (-8.4°C). January brings the lowest temperatures, with an average high of 28.9°F (-1.7°C) and an average low of 16.9°F (-8.4°C). Weather in January »

Weather in February

February, the last month of the winter in Granville, is a cold month, with an average temperature ranging between max 33.4°F (0.8°C) and min 20.3°F (-6.5°C). The arrival of February records an average high-temperature of an icy 33.4°F (0.8°C), closely related to the 28.9°F (-1.7°C) observed in January. Weather in February »

Weather in March

March, the first month of the spring in Granville, is a frosty month, with an average temperature fluctuating between 47.1°F (8.4°C) and 32.5°F (0.3°C). As March sets, the average high-temperature shows an increase, moving up from a cold 33.4°F (0.8°C) in February to a chilly 47.1°F (8.4°C). Weather in March »

Weather in April

April is a mild spring month in Granville, Illinois, with an average temperature fluctuating between 42.4°F (5.8°C) and 59°F (15°C). The beginning of April marks a shift in the average high-temperature, moving from March's chilly 47.1°F (8.4°C) to a moderate 59°F (15°C). Weather in April »

Weather in May

The last month of the spring, May, is an agreeable month in Granville, Illinois, with temperature in the range of an average high of 71.1°F (21.7°C) and an average low of 53.6°F (12°C). With the onset of May, Granville's weather sees a temperature rise, transitioning from a refreshing 59°F (15°C) in April to a pleasant 71.1°F (21.7°C). Weather in May »

Weather in June

June, the first month of the summer in Granville, is a moderately hot month, with an average temperature ranging between max 78.6°F (25.9°C) and min 61.7°F (16.5°C). The shift into June is accompanied by a modest temperature increase, with the average high-temperature edging up from an agreeable 71.1°F (21.7°C) in May to a moderately hot 78.6°F (25.9°C). Weather in June »

Weather in July

July, the same as June, is another warm summer month in Granville, Illinois, with an average temperature varying between 80.8°F (27.1°C) and 64.2°F (17.9°C). In Granville, July is the month with the highest recorded average temperatures, measuring a high of 80.8°F (27.1°C) and a low of 64.2°F (17.9°C). July's average heat index is appraised at a hot 86°F (30°C). Weather in July »

Weather in August

The last month of the summer, August, is another warm month in Granville, Illinois, with an average temperature varying between 79.7°F (26.5°C) and 61.9°F (16.6°C). August's advent denotes a minor fluctuation in the average high-temperature to a still warm 79.7°F (26.5°C) from July's 80.8°F (27.1°C). Weather in August »

Weather in September

September, the first month of the autumn in Granville, is still a warm month, with an average temperature ranging between min 56.1°F (13.4°C) and max 74.7°F (23.7°C). Transitioning into September, Granville records an average high-temperature of a still moderately hot 74.7°F (23.7°C), almost identical to August's 79.7°F (26.5°C). Weather in September »

Weather in October

October, like September, in Granville, Illinois, is another refreshing autumn month, with an average temperature ranging between max 61.7°F (16.5°C) and min 45.7°F (7.6°C). The onset of October comes with a shift in the average high-temperature, falling from a moderately hot 74.7°F (23.7°C) in September to an enjoyable 61.7°F (16.5°C). Weather in October »

Weather in November

The last month of the autumn, November, is another chilly month in Granville, Illinois, with an average temperature varying between 46.8°F (8.2°C) and 33.6°F (0.9°C). The changeover to November signals a significant decrease in the average high-temperature, dropping from an enjoyable 61.7°F (16.5°C) in October to a frosty 46.8°F (8.2°C). Weather in November »

Weather in December

December, the first month of the winter in Granville, is also an icy month, with an average temperature fluctuating between 24.4°F (-4.2°C) and 34.7°F (1.5°C). In Granville, the average high-temperature in December decreases from a frosty 46.8°F (8.2°C) in November to a cold 34.7°F (1.5°C). Weather in December »
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Frequently asked questions

What part of the year is the coldest in Granville?

Granville, Illinois, notes the coldest temperatures in January, with a average high of 28.9°F (-1.7°C) and a low of 16.9°F (-8.4°C).

What is the driest month in Granville?

The months with the least rainfall are January and December Rain falls for 5.9 days and accumulates 1.61" (41mm) of rain.

How many days does it rain in Granville?

In Granville, during the entire year, the rain falls for 152.7 days and collects up to 30.79" (782mm) of precipitation.

When does it snow in Granville?

Months with snowfall in Granville, Illinois, are January through April, October through December.

What is the snowiest month in Granville?

January is the month with the most snowfall in Granville. Snow falls for 11.9 days and accumulates 4.09" (104mm) of snow.

How many days does it snow in Granville?

Throughout the year, in Granville, there are 39.5 snowfall days, and 15.31" (389mm) of snow is accumulated.

What is the month with the least sunshine in Granville?

The month with the least sunshine in Granville, Illinois, is January, with an average of 3.9h of sunshine.

When is the lowest UV index in Granville?

January and December, with an average maximum UV index of 1, are months with the lowest UV index in Granville, Illinois.

When is Daylight Saving Time (DST) in Granville?

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

What is the wettest month in Granville?

The month with the most rainfall in Granville, Illinois, is May, when the rain falls for 18.9 days and typically aggregates up to 4.69" (119mm) of precipitation.

When it does not snow in Granville?

May through September are months without snowfall in Granville.

When are the longest days in Granville?

June has the longest days of the year in Granville, Illinois, with an average of 15h and 6min of daylight.

What is the month with the most sunshine in Granville?

The months with the most sunshine in Granville are June through August, with an average of 9.8h of sunshine.

What is the month with the highest UV index in Granville?

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

What is the hottest time of year in Granville?

July is the warmest month of the year, registering average temperatures as high as 80.8°F (27.1°C) and as low as 64.2°F (17.9°C).

What is the most humid month in Granville?

The most humid month in Granville is July, with an average relative humidity of 85%.

What is the least humid month in Granville?

The least humid month in Granville is October, with an average relative humidity of 72%.

What is the month with the shortest days in Granville?

With an average of 9h and 18min of daylight, December has the shortest days of the year in Granville, Illinois.

Average temperature
Granville, IL

Average temperature - Granville, IL

The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (28.9°F).

The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (16.9°F).

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Average pressure
Granville, IL

Average pressure - Granville, IL

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed
Granville, IL

Average wind speed - Granville, IL

The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).

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Average rainfall
Granville, IL

Average rainfall - Granville, IL

The wettest month (with the highest rainfall) is May (4.69").
The driest months (with the least rainfall) are January and December (1.61").

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Average rainfall days
Granville, IL

Average rainfall days - Granville, IL

The month with the highest number of rainy days is May (18.9 days).
The month with the least rainy days is January (5.9 days).

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Average snowfall
Granville, IL

Average snowfall - Granville, IL

The month with the highest snowfall is January (4.09").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days
Granville, IL

Average snowfall days - Granville, IL

The month with the highest number of snowfall days is January (11.9 days).
The months with the least snowfall days are May, June, July and August (0 days).

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Average daylight / Average sunshine
Granville, IL

Average daylight / Average sunshine - Granville, IL

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

The months with the most sunshine are June, July and August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).

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Average sunshine days
Granville, IL

Average sunshine days - Granville, IL

The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is April (10.2 days).

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Average UV index
Granville, IL

Average UV index - Granville, 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 and December (UV index 1).

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Average visibility
Granville, IL

Average visibility - Granville, IL

The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).

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Granville, Illinois, USA

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