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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
Climate and monthly weather forecast
Weather in January
January, like December, is another subzero cold winter month in Gridley, Illinois, with an average temperature fluctuating between 30.4°F (-0.9°C) and 18.5°F (-7.5°C). January, characterized by an average high temperature of 30.4°F (-0.9°C) and a low temperature of 18.5°F (-7.5°C), is generally the coldest month. Weather in January »
Weather in February
February, the last month of the winter in Gridley, is an icy month, with an average temperature varying between 22.1°F (-5.5°C) and 34.9°F (1.6°C). During February, Gridley observes a subtle ascent to a cold 34.9°F (1.6°C) from January's 30.4°F (-0.9°C) in the average high-temperature. Weather in February »
Weather in March
March, the first month of the spring in Gridley, is a frosty month, with temperature in the range of an average low of 33.4°F (0.8°C) and an average high of 47.8°F (8.8°C). March's arrival brings a temperature shift, moving from an icy 34.9°F (1.6°C) in February to a chilly 47.8°F (8.8°C). Weather in March »
Weather in April
April is a moderate spring month in Gridley, Illinois, with temperature in the range of an average high of 59.7°F (15.4°C) and an average low of 43.9°F (6.6°C). The average high-temperature increases in April, moving from a chilly 47.8°F (8.8°C) in March to a refreshing 59.7°F (15.4°C). Weather in April »
Weather in May
May, the last month of the spring in Gridley, is an agreeable month, with an average temperature ranging between max 71.6°F (22°C) and min 54.9°F (12.7°C). May's arrival signals a temperature shift, moving from a refreshing 59.7°F (15.4°C) in April to a pleasant 71.6°F (22°C). Weather in May »
Weather in June
June, the first month of the summer in Gridley, is a warm month, with an average temperature ranging between min 62.4°F (16.9°C) and max 79.5°F (26.4°C). As May transitions into June, Gridley notices a gentle rise in the average high-temperature, transitioning from a pleasant 71.6°F (22°C) to a moderately hot 79.5°F (26.4°C). Weather in June »
Weather in July
July, the same as June, is a moderately hot summer month in Gridley, Illinois, with an average temperature fluctuating between 81°F (27.2°C) and 64.6°F (18.1°C). July is the warmest month, with the temperature often reaching an average high of 81°F (27.2°C) and an average low of 64.6°F (18.1°C). The average heat index in July is estimated at a hot 87.8°F (31°C). Weather in July »
Weather in August
August, the last month of the summer in Gridley, is another warm month, with an average temperature varying between 62.6°F (17°C) and 80.2°F (26.8°C). The commencement of August notes an average high-temperature of a still warm 80.2°F (26.8°C), exhibiting little difference from the previous month. Weather in August »
Weather in September
The first month of the autumn, September, is also a moderately hot month in Gridley, Illinois, with an average temperature ranging between max 75.7°F (24.3°C) and min 57°F (13.9°C). Gridley's shift into September sets the average high-temperature at a still moderately hot 75.7°F (24.3°C), a figure that deviates only slightly from August's 80.2°F (26.8°C). Weather in September »
Weather in October
October, the same as September, is another enjoyable autumn month in Gridley, Illinois, with an average temperature fluctuating between 46.6°F (8.1°C) and 61.9°F (16.6°C). October indicates a shift in the average high-temperature, from September's warm 75.7°F (24.3°C) to an enjoyable 61.9°F (16.6°C). Weather in October »
Weather in November
The last month of the autumn, November, is another chilly month in Gridley, Illinois, with an average temperature fluctuating between 47.7°F (8.7°C) and 34.7°F (1.5°C). November's onset brings a slight change in high-temperatures, falling from a comfortable 61.9°F (16.6°C) in October to a chilly 47.7°F (8.7°C). Weather in November »
Weather in December
December, the first month of the winter in Gridley, is also an icy month, with an average temperature fluctuating between 25.9°F (-3.4°C) and 36.5°F (2.5°C). The arrival of December corresponds with a temperature reduction, down from November's frosty 47.7°F (8.7°C) to an icy 36.5°F (2.5°C). Weather in December »
Updated: Aug 18, 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 month is the coldest?
January is the coldest month, with an average high-temperature of 30.4°F (-0.9°C) and an average low-temperature of 18.5°F (-7.5°C).
What is the driest month?
The month with the least rainfall is January, when the rain falls for 5.3 days and typically collects 0.94" (24mm) of precipitation.
How many days does it rain?
Throughout the year, there are 131.6 rainfall days, and 18.86" (479mm) of precipitation is accumulated.
When does it snow?
Months with snowfall are January through April, November and December.
When does it snow the most?
January is the month with the most snowfall. Snow falls for 10.6 days and accumulates 2.4" (61mm) of snow.
How many days does it snow?
Throughout the year, there are 30.1 snowfall days, and 9.17" (233mm) of snow is accumulated.
What is the month with the least sunshine?
January has the least sunshine of the year, with an average of 3.8h of sunshine.
When is Daylight Saving Time (DST) in Gridley?
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 wettest month?
May is the month with the most rainfall. Rain falls for 16.9 days and accumulates 2.68" (68mm) of precipitation.
When it does not snow?
In Gridley, snow does not fall in May through October.
When are the longest days?
June has the longest days of the year, with an average of 15h and 0min of daylight.
What month has the most sunshine?
June has the most sunshine of the year in Gridley, with an average of 10h 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?
July, with its high-temperature average of 81°F (27.2°C) and a low-temperature average of 64.6°F (18.1°C), is the warmest month.
What is the most humid month?
With an average relative humidity of 85%, July is the most humid month.
What is the least humid month?
The least humid month is October, with an average relative humidity of 71%.
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.
What is the month with the lowest UV index?
With an average maximum UV index of 1, December is the month with the lowest UV index.
Average temperature
Gridley, IL
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (30.4°F).
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (18.5°F).
Average pressure
Gridley, IL
- Average pressure in January:
30.14"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:
29.96"Hg - Average pressure in June:
29.92"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:
30.02"Hg - Average pressure in November:
30.11"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Gridley, IL
- Average wind speed in January:
10.8mph - Average wind speed in February:
10.7mph - Average wind speed in March:
10.4mph - Average wind speed in April:
10.7mph - Average wind speed in May:
9.1mph - Average wind speed in June:
8mph
- Average wind speed in July:
6.6mph - Average wind speed in August:
6.5mph - Average wind speed in September:
7.6mph - Average wind speed in October:
9.6mph - Average wind speed in November:
10.3mph - Average wind speed in December:
10.3mph
The windiest month (with the highest average wind speed) is January (10.8mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity
Gridley, IL
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Gridley, IL
- Average rainfall in January:
0.94" - Average rainfall in February:
0.98" - Average rainfall in March:
1.46" - Average rainfall in April:
2.17" - Average rainfall in May:
2.68" - Average rainfall in June:
2.24"
- Average rainfall in July:
2.01" - Average rainfall in August:
1.65" - Average rainfall in September:
1.3" - Average rainfall in October:
1.42" - Average rainfall in November:
1.02" - Average rainfall in December:
0.98"
The wettest month (with the highest rainfall) is May (2.68").
The driest month (with the least rainfall) is January (0.94").
Average rainfall days
Gridley, IL
- Average rainfall days in January:
5.3 days - Average rainfall days in February:
5.1 days - Average rainfall days in March:
11.3 days - Average rainfall days in April:
13.2 days - Average rainfall days in May:
16.9 days - Average rainfall days in June:
15.7 days
- Average rainfall days in July:
16.3 days - Average rainfall days in August:
12.8 days - Average rainfall days in September:
10.6 days - Average rainfall days in October:
10.5 days - Average rainfall days in November:
8 days - Average rainfall days in December:
5.9 days
The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is February (5.1 days).
Average snowfall
Gridley, IL
The month with the highest snowfall is January (2.4").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Gridley, IL
- Average snowfall days in January:
10.6 days - Average snowfall days in February:
7 days - Average snowfall days in March:
3.8 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:
0.2 days - Average snowfall days in November:
1.9 days - Average snowfall days in December:
5.9 days
The month with the highest number of snowfall days is January (10.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Gridley, 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 0min
- Average daylight in July:
14h and 5min - Average daylight in August:
13h and 4min - 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 0min).
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 1min - Average sunshine in March:
6h and 2min - Average sunshine in April:
8h and 0min - Average sunshine in May:
8h and 5min - Average sunshine in June:
10h and 0min
- Average sunshine in July:
9h and 4min - Average sunshine in August:
9h and 5min - Average sunshine in September:
9h and 0min - Average sunshine in October:
5h and 5min - Average sunshine in November:
5h and 1min - Average sunshine in December:
4h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days
Gridley, IL
- Average sunshine days in January:
16.8 days - Average sunshine days in February:
16.8 days - Average sunshine days in March:
15.8 days - Average sunshine days in April:
14.3 days - Average sunshine days in May:
11.8 days - Average sunshine days in June:
11.1 days
- Average sunshine days in July:
10.3 days - Average sunshine days in August:
15 days - Average sunshine days in September:
17 days - Average sunshine days in October:
18.9 days - Average sunshine days in November:
20 days - Average sunshine days in December:
19.5 days
The month with the most sunshine days is November (20 days).
The month with the least sunshine days is July (10.3 days).
Average UV index
Gridley, IL
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
Gridley, IL
The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are August and September (Cloud cover 32).
Average visibility
Gridley, IL
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).