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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, the same as December, in Granville, Illinois, is a freezing cold winter month, with an average temperature varying between 28.9°F (-1.7°C) and 16.9°F (-8.4°C). January, having an average high-temperature of 28.9°F (-1.7°C) and an average low-temperature of 16.9°F (-8.4°C), is the coldest month. Weather in January »
Weather in February
The last month of the winter, February, is a cold month in Granville, Illinois, with temperature in the range of an average low of 20.3°F (-6.5°C) and an average high of 33.4°F (0.8°C). February's arrival shows an average high-temperature of an icy 33.4°F (0.8°C), hardly different from the previous month. Weather in February »
Weather in March
March, the first month of the spring in Granville, is a chilly month, with an average temperature varying between 47.1°F (8.4°C) and 32.5°F (0.3°C). March's onset witnesses a shift in the average high-temperature, moving from a wintry 33.4°F (0.8°C) in February to a chilly 47.1°F (8.4°C). Weather in March »
Weather in April
April in Granville, Illinois, is a moderate spring month, with an average temperature varying between 42.4°F (5.8°C) and 59°F (15°C). April's onset is marked by a temperature increase, moving from a frosty 47.1°F (8.4°C) in March to a refreshing 59°F (15°C). Weather in April »
Weather in May
May, the last month of the spring in Granville, is an agreeable month, with an average temperature varying between 53.6°F (12°C) and 71.1°F (21.7°C). With the onset of May, Granville experiences a temperature shift, with the average high-temperature moving from a mild 59°F (15°C) in April to a pleasant 71.1°F (21.7°C). Weather in May »
Weather in June
The first month of the summer, June, is a moderately hot month in Granville, Illinois, with an average temperature fluctuating between 78.6°F (25.9°C) and 61.7°F (16.5°C). The commencement of June sees a minor shift in the average high-temperature, moving from an agreeable 71.1°F (21.7°C) in May to a warm 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 ranging between max 80.8°F (27.1°C) and min 64.2°F (17.9°C). The warmest period tends to be July, when average temperatures fluctuate between a high of 80.8°F (27.1°C) and a low of 64.2°F (17.9°C). July's mean heat index is computed to be a hot 86°F (30°C). Weather in July »
Weather in August
August, the last month of the summer in Granville, is also a moderately hot month, with an average temperature fluctuating between 79.7°F (26.5°C) and 61.9°F (16.6°C). The transition into August notes an average high-temperature of a still moderately hot 79.7°F (26.5°C), revealing a mild distinction from the 80.8°F (27.1°C) in July. 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). September is marked by an average high-temperature of a still warm 74.7°F (23.7°C), almost identical to the preceding month. Weather in September »
Weather in October
October, the same as September, is another comfortable autumn month in Granville, Illinois, with an average temperature varying between 61.7°F (16.5°C) and 45.7°F (7.6°C). Setting in of October comes with a decrease in the average high-temperature, moving from a warm 74.7°F (23.7°C) in September to a comfortable 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 ranging between max 46.8°F (8.2°C) and min 33.6°F (0.9°C). A notable decrease in the average high-temperature is observed during November, falling from a refreshing 61.7°F (16.5°C) in October to a chilly 46.8°F (8.2°C). Weather in November »
Weather in December
December, the first month of the winter in Granville, is also a wintry month, with an average temperature fluctuating between 34.7°F (1.5°C) and 24.4°F (-4.2°C). December brings a minor decrease, with the average high-temperature reducing from a chilly 46.8°F (8.2°C) in November to a wintry 34.7°F (1.5°C). Weather in December »
Updated: Jul 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?
January, with average temperatures reaching a high of 28.9°F (-1.7°C) and a low of 16.9°F (-8.4°C), is the coldest month.
What is the driest month?
January and December are months with the least rain in Granville when the rain falls for 5.9 days and typically aggregates up to 1.61" (41mm) of rain.
How much 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?
Months with snowfall are January through April, October through December.
When does it snow the most?
January is the month with the most snowfall. Snow falls for 11.9 days and accumulates 4.09" (104mm) of snow.
How many days does it snow?
In Granville, during the entire year, snow falls for 39.5 days and aggregates up to 15.31" (389mm) of snow.
What is the month with the least sunshine?
January has the least sunshine of the year, with an average of 3.9h of sunshine.
When is the lowest UV index?
The months with the lowest UV index are January and December, with an average maximum UV index of 1.
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?
The month with the most rainfall 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, snow does not fall in May through September.
When are the longest days in Granville?
The month with the longest days is June, with an average of 15h and 6min of daylight.
What is the month with the most sunshine?
The months with the most sunshine are June through August, with an average of 9.8h of sunshine.
When is the highest UV index?
The months with the highest UV index are June through August, with an average maximum UV index of 6.
What time of the year is the hottest?
Granville records the warmest temperatures in July, averaging a high of 80.8°F (27.1°C) and a low of 64.2°F (17.9°C).
What is the most humid month?
The most humid month is July, with an average relative humidity of 85%.
What is the least humid month?
With an average relative humidity of 72%, October is the least humid month.
What is the month with the shortest days?
December has the shortest days of the year, with an average of 9h and 18min of daylight.
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).
Average pressure
Granville, IL
- Average pressure in January:
30.13"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.94"Hg - Average pressure in May:
29.95"Hg - Average pressure in June:
29.91"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:
30.01"Hg - Average pressure in November:
30.1"Hg - Average pressure in December:
30.1"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed
Granville, IL
- Average wind speed in January:
10.3mph - Average wind speed in February:
10.2mph - Average wind speed in March:
10.1mph - Average wind speed in April:
10.4mph - Average wind speed in May:
8.8mph - Average wind speed in June:
7.6mph
- Average wind speed in July:
6.5mph - Average wind speed in August:
6.3mph - Average wind speed in September:
7.5mph - Average wind speed in October:
9.2mph - Average wind speed in November:
9.9mph - Average wind speed in December:
9.6mph
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).
Average humidity
Granville, IL
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (72%).
Average rainfall
Granville, IL
- Average rainfall in January:
1.61" - Average rainfall in February:
1.69" - Average rainfall in March:
2.2" - Average rainfall in April:
3.82" - Average rainfall in May:
4.69" - Average rainfall in June:
3.27"
The wettest month (with the highest rainfall) is May (4.69").
The driest months (with the least rainfall) are January and December (1.61").
Average rainfall days
Granville, IL
- Average rainfall days in January:
5.9 days - Average rainfall days in February:
6.5 days - Average rainfall days in March:
12.6 days - Average rainfall days in April:
17.1 days - Average rainfall days in May:
18.9 days - Average rainfall days in June:
17.8 days
- Average rainfall days in July:
17.5 days - Average rainfall days in August:
13.9 days - Average rainfall days in September:
11.6 days - Average rainfall days in October:
13.2 days - Average rainfall days in November:
10.2 days - Average rainfall days in December:
7.5 days
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).
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").
Average snowfall days
Granville, IL
- Average snowfall days in January:
11.9 days - Average snowfall days in February:
9.5 days - Average snowfall days in March:
5.3 days - Average snowfall days in April:
1.4 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:
0.1 days - Average snowfall days in October:
0.5 days - Average snowfall days in November:
2.8 days - Average snowfall days in December:
8 days
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).
Average daylight / Average sunshine
Granville, IL
- Average daylight in January:
9h and 4min - 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 3min - 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 2min
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).
- Average sunshine in January:
3h and 5min - Average sunshine in February:
4h and 0min - Average sunshine in March:
6h and 3min - Average sunshine in April:
7h and 5min - Average sunshine in May:
8h and 5min - Average sunshine in June:
9h and 5min
- Average sunshine in July:
9h and 5min - Average sunshine in August:
9h and 5min - Average sunshine in September:
9h and 0min - Average sunshine in October:
5h and 4min - Average sunshine in November:
5h and 1min - Average sunshine in December:
4h and 1min
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).
Average sunshine days
Granville, IL
- Average sunshine days in January:
14 days - Average sunshine days in February:
13.3 days - Average sunshine days in March:
14.1 days - Average sunshine days in April:
10.2 days - Average sunshine days in May:
10.3 days - Average sunshine days in June:
10.3 days
- Average sunshine days in July:
10.9 days - Average sunshine days in August:
14.8 days - Average sunshine days in September:
16.1 days - Average sunshine days in October:
15.5 days - Average sunshine days in November:
17.5 days - Average sunshine days in December:
16.2 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is April (10.2 days).
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).
Average cloud cover
Granville, IL
The month with the most cloud cover is January (Cloud cover 59).
The months with the least cloud cover are August and September (Cloud cover 32).
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).
Granville, Illinois, USA
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