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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 Griggsville, Illinois, is a wintry winter month, with an average temperature ranging between max 33.8°F (1°C) and min 21.6°F (-5.8°C). Temperature readings reach their annual highs in January, averaging 33.8°F (1°C) and a minimum average of 21.6°F (-5.8°C). Weather in January »
Weather in February
February, the last month of the winter in Griggsville, is also a wintry month, with an average temperature fluctuating between 38.8°F (3.8°C) and 25°F (-3.9°C). With February's arrival, Griggsville's weather records an average high-temperature of a still wintry 38.8°F (3.8°C), marking little difference from January's 33.8°F (1°C). Weather in February »
Weather in March
The first month of the spring, March, is a cool month in Griggsville, Illinois, with an average temperature ranging between min 36°F (2.2°C) and max 51.4°F (10.8°C). Griggsville's weather in March shows a rise in the average high-temperature, moving up from February's icy 38.8°F (3.8°C) to a cool 51.4°F (10.8°C). Weather in March »
Weather in April
April in Griggsville, Illinois, is an enjoyable spring month, with an average temperature varying between 63.5°F (17.5°C) and 46°F (7.8°C). April's arrival signals a temperature shift, moving from a fresh 51.4°F (10.8°C) in March to a comfortable 63.5°F (17.5°C). Weather in April »
Weather in May
The last month of the spring, May, is a pleasant month in Griggsville, Illinois, with an average temperature fluctuating between 55.8°F (13.2°C) and 72.3°F (22.4°C). The shift from April to May introduces a subtle increase in the average high-temperature, moving from a comfortable 63.5°F (17.5°C) to an agreeable 72.3°F (22.4°C). Weather in May »
Weather in June
June, the first month of the summer in Griggsville, is a warm month, with an average temperature varying between 82°F (27.8°C) and 64.6°F (18.1°C). As May transitions into June, Griggsville sees a rise in the average high-temperature, moving from an agreeable 72.3°F (22.4°C) to a warm 82°F (27.8°C). Weather in June »
Weather in July
July, the same as June, is another warm summer month in Griggsville, Illinois, with an average temperature ranging between max 84.4°F (29.1°C) and min 66.7°F (19.3°C). July, with its average high-temperature of 84.4°F (29.1°C) and an average low-temperature of 66.7°F (19.3°C), holds the record as the warmest month. The average heat index in July is evaluated at a very hot 95°F (35°C). Weather in July »
Weather in August
August, the last month of the summer in Griggsville, is also a moderately hot month, with an average temperature varying between 65.5°F (18.6°C) and 83.5°F (28.6°C). Griggsville's August reports an average high-temperature of a still moderately hot 83.5°F (28.6°C), exhibiting a minor difference from July. Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Griggsville, Illinois, with an average temperature fluctuating between 58.6°F (14.8°C) and 78.3°F (25.7°C). As Griggsville welcomes September, the average high-temperature is noted at a still warm 78.3°F (25.7°C), closely aligning with the preceding month. Weather in September »
Weather in October
October, like September, in Griggsville, Illinois, is another comfortable autumn month, with an average temperature ranging between min 47.3°F (8.5°C) and max 64.2°F (17.9°C). Griggsville's October weather comes with a decrease in average high-temperatures, moving from a moderately hot 78.3°F (25.7°C) in September to a comfortable 64.2°F (17.9°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a fresh month in Griggsville, Illinois, with an average temperature varying between 50.9°F (10.5°C) and 36.3°F (2.4°C). November's onset corresponds with a shift in the average high-temperature, moving from a refreshing 64.2°F (17.9°C) in October to a fresh 50.9°F (10.5°C). Weather in November »
Weather in December
December, the first month of the winter in Griggsville, is also an icy month, with an average temperature fluctuating between 27.9°F (-2.3°C) and 39°F (3.9°C). The shift from November to December involves a decrease in the average high-temperature, dropping from a fresh 50.9°F (10.5°C) to a wintry 39°F (3.9°C). Weather in December »
[Resources]Frequently asked questions
What is the coldest time of year in Griggsville?
In Griggsville, January records the average lowest temperatures, peaking at 33.8°F (1°C) and reaching a low of 21.6°F (-5.8°C).
How many days does it rain in Griggsville?
Throughout the year, there are 128.8 rainfall days, and 18.35" (466mm) of precipitation is accumulated.
When does it snow in Griggsville?
Months with snowfall in Griggsville, Illinois, are January through April, November and December.
When does it snow the most in Griggsville?
The month with the most snowfall in Griggsville is January, when snow falls for 6.3 days and typically aggregates up to 2.05" (52mm) of snow.
How much does it snow in Griggsville?
Throughout the year, there are 21.9 snowfall days, and 5.67" (144mm) of snow is accumulated.
What is the month with the least sunshine in Griggsville?
January has the least sunshine of the year, with an average of 4.4h of sunshine.
What are the months with the lowest UV index in Griggsville?
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Griggsville.
What is the driest month in Griggsville?
The month with the least rainfall is February, when the rain falls for 5.8 days and typically collects 0.75" (19mm) of precipitation.
When is Daylight Saving Time (DST) in Griggsville?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Griggsville, 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 Griggsville?
May is the month with the most rainfall. Rain falls for 16.8 days and accumulates 2.44" (62mm) of precipitation.
When it does not snow in Griggsville?
In Griggsville, Illinois, snow does not fall in May through October.
What is the most humid month in Griggsville?
The months with the highest humidity are June and July, with an average relative humidity of 81%.
When are the longest days in Griggsville?
June has the longest days of the year, with an average of 14h and 54min of daylight.
What is the month with the most sunshine in Griggsville?
The months with the most sunshine are June and July, with an average of 10.3h of sunshine.
What are the months with the highest UV index in Griggsville?
June through August, with an average maximum UV index of 6, are months with the highest UV index in Griggsville, Illinois.
What time of the year is the hottest in Griggsville?
July, recognised by an average high temperature of 84.4°F (29.1°C) and a low of 66.7°F (19.3°C), is Griggsville's warmest month.
What is the least humid month in Griggsville?
With an average relative humidity of 71%, October is the least humid month in Griggsville.
What is the month with the shortest days in Griggsville?
With an average of 9h and 24min of daylight, December has the shortest days of the year.
Average temperature
Griggsville, IL
The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (33.8°F).
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure
Griggsville, IL
- Average pressure in January:
30.15"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.95"Hg - Average pressure in June:
29.91"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.97"Hg - Average pressure in September:
30.02"Hg - Average pressure in October:
30.02"Hg - Average pressure in November:
30.11"Hg - Average pressure in December:
30.12"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed
Griggsville, IL
- Average wind speed in January:
9.8mph - Average wind speed in February:
9.8mph - Average wind speed in March:
9.7mph - Average wind speed in April:
9.8mph - Average wind speed in May:
7.9mph - Average wind speed in June:
7mph
- Average wind speed in July:
6mph - Average wind speed in August:
6.2mph - Average wind speed in September:
6.8mph - Average wind speed in October:
8.5mph - Average wind speed in November:
9.4mph - Average wind speed in December:
9.4mph
The windiest months (with the highest average wind speed) are January, February and April (9.8mph).
The calmest month (with the lowest average wind speed) is July (6mph).
Average humidity
Griggsville, IL
The months with the highest relative humidity are June and July (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Griggsville, IL
- Average rainfall in January:
0.87" - Average rainfall in February:
0.75" - Average rainfall in March:
1.5" - Average rainfall in April:
1.89" - Average rainfall in May:
2.44" - Average rainfall in June:
2.36"
- Average rainfall in July:
1.69" - Average rainfall in August:
1.85" - Average rainfall in September:
1.65" - Average rainfall in October:
1.5" - Average rainfall in November:
0.98" - Average rainfall in December:
0.87"
The wettest month (with the highest rainfall) is May (2.44").
The driest month (with the least rainfall) is February (0.75").
Average rainfall days
Griggsville, IL
- Average rainfall days in January:
4.5 days - Average rainfall days in February:
5.8 days - Average rainfall days in March:
12.5 days - Average rainfall days in April:
14.1 days - Average rainfall days in May:
16.8 days - Average rainfall days in June:
14.3 days
- Average rainfall days in July:
13.5 days - Average rainfall days in August:
12.4 days - Average rainfall days in September:
10.5 days - Average rainfall days in October:
10 days - Average rainfall days in November:
7.4 days - Average rainfall days in December:
7 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (4.5 days).
Average snowfall
Griggsville, IL
The month with the highest snowfall is January (2.05").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Griggsville, IL
- Average snowfall days in January:
6.3 days - Average snowfall days in February:
5.5 days - Average snowfall days in March:
3.5 days - Average snowfall days in April:
0.7 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:
0.1 days - Average snowfall days in November:
1.6 days - Average snowfall days in December:
4.2 days
The month with the highest number of snowfall days is January (6.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Griggsville, 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 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 2min - Average sunshine in February:
4h and 4min - Average sunshine in March:
6h and 4min - Average sunshine in April:
8h and 2min - Average sunshine in May:
9h and 1min - Average sunshine in June:
10h and 2min
- Average sunshine in July:
10h and 2min - Average sunshine in August:
10h and 0min - Average sunshine in September:
9h and 3min - Average sunshine in October:
5h and 5min - Average sunshine in November:
5h and 2min - Average sunshine in December:
4h and 5min
The months with the most sunshine are June and July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days
Griggsville, IL
- Average sunshine days in January:
20.5 days - Average sunshine days in February:
18 days - Average sunshine days in March:
14.2 days - Average sunshine days in April:
14.3 days - Average sunshine days in May:
12.9 days - Average sunshine days in June:
12.3 days
- Average sunshine days in July:
13.7 days - Average sunshine days in August:
16.4 days - Average sunshine days in September:
17.3 days - Average sunshine days in October:
19.5 days - Average sunshine days in November:
20.1 days - Average sunshine days in December:
20.7 days
The month with the most sunshine days is December (20.7 days).
The month with the least sunshine days is June (12.3 days).
Average UV index
Griggsville, 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
Griggsville, IL
The month with the most cloud cover is January (Cloud cover 52).
The months with the least cloud cover are June, July, August and September (Cloud cover 29).
Average visibility
Griggsville, 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).
Griggsville, Illinois, USA
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