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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 Green Valley, Illinois, is another subzero cold winter month, with an average temperature fluctuating between 31.5°F (-0.3°C) and 19.8°F (-6.8°C). January is the month when Green Valley sees the lowest average temperatures, with a high of 31.5°F (-0.3°C) and a low of 19.8°F (-6.8°C). Weather in January »
Weather in February
February, the last month of the winter in Green Valley, is an icy month, with an average temperature fluctuating between 36.3°F (2.4°C) and 23.4°F (-4.8°C). The high-temperature average in February for Green Valley is a cold 36.3°F (2.4°C), staying closely aligned with January's conditions. Weather in February »
Weather in March
March, the first month of the spring in Green Valley, is a frosty month, with an average temperature ranging between max 49.6°F (9.8°C) and min 34.5°F (1.4°C). As Green Valley transitions into March, the average high-temperature is observed to rise from a wintry 36.3°F (2.4°C) in February to a chilly 49.6°F (9.8°C). Weather in March »
Weather in April
April is a comfortable spring month in Green Valley, Illinois, with temperature in the range of an average high of 61.5°F (16.4°C) and an average low of 44.6°F (7°C). April's arrival brings a temperature shift, moving from a frosty 49.6°F (9.8°C) in March to a comfortable 61.5°F (16.4°C). Weather in April »
Weather in May
May, the last month of the spring in Green Valley, is a pleasant month, with an average temperature fluctuating between 72.1°F (22.3°C) and 55.8°F (13.2°C). Green Valley sees a rise in temperature during May, with average high-temperatures transitioning from a comfortable 61.5°F (16.4°C) in April to a pleasant 72.1°F (22.3°C). Weather in May »
Weather in June
June, the first month of the summer in Green Valley, is a warm month, with an average temperature fluctuating between 80.6°F (27°C) and 63.9°F (17.7°C). Green Valley's transition into June brings a slight rise in the average high-temperature, moving from an agreeable 72.1°F (22.3°C) in May to a moderately hot 80.6°F (27°C). Weather in June »
Weather in July
July, like June, in Green Valley, Illinois, is a moderately hot summer month, with temperature in the range of an average low of 65.3°F (18.5°C) and an average high of 82°F (27.8°C). Green Valley's temperatures peak on average in July, reaching 82°F (27.8°C) at their highest and 65.3°F (18.5°C) at their lowest. July's heat index is evaluated at a hot 89.6°F (32°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Green Valley, Illinois, with an average temperature varying between 63.5°F (17.5°C) and 81.1°F (27.3°C). As July turns into August, the average high-temperatures rest at a still warm 81.1°F (27.3°C), showing a minor variation from the prior month. Weather in August »
Weather in September
September, the first month of the autumn in Green Valley, is also a moderately hot month, with temperature in the range of an average low of 57.9°F (14.4°C) and an average high of 76.5°F (24.7°C). The commencement of September brings an average high-temperature of a still moderately hot 76.5°F (24.7°C), marking an inconsequential divergence from August. Weather in September »
Weather in October
October, like September, in Green Valley, Illinois, is another enjoyable autumn month, with an average temperature ranging between min 46.9°F (8.3°C) and max 63.1°F (17.3°C). Green Valley's average high-temperature decreases in October, falling from a moderately hot 76.5°F (24.7°C) in September to an enjoyable 63.1°F (17.3°C). Weather in October »
Weather in November
November, the last month of the autumn in Green Valley, is also a frosty month, with temperature in the range of an average low of 35.2°F (1.8°C) and an average high of 48.9°F (9.4°C). During Green Valley's transition into November, the average high-temperature lessens, moving from an enjoyable 63.1°F (17.3°C) in October to a chilly 48.9°F (9.4°C). Weather in November »
Weather in December
December, the first month of the winter in Green Valley, is still a cold month, with an average temperature fluctuating between 36.9°F (2.7°C) and 26.4°F (-3.1°C). The onset of December results in a decrease in the average high-temperature, receding from a frosty 48.9°F (9.4°C) in November to an icy 36.9°F (2.7°C). Weather in December »
[Resources]Frequently asked questions
What are the coldest months in Green Valley?
Green Valley's coldest weather arrives in January, when temperatures average a high of 31.5°F (-0.3°C) and a low of 19.8°F (-6.8°C).
How much does it rain in Green Valley?
Throughout the year, in Green Valley, Illinois, there are 131.4 rainfall days, and 20.08" (510mm) of precipitation is accumulated.
When does it snow in Green Valley?
Months with snowfall are January through April, November and December.
What is the snowiest month in Green Valley?
January is the month with the most snowfall. Snow falls for 8.4 days and accumulates 2.87" (73mm) of snow.
How many days does it snow in Green Valley?
Throughout the year, there are 25.8 snowfall days, and 8.66" (220mm) of snow is accumulated.
What is the month with the least sunshine in Green Valley?
January has the least sunshine of the year in Green Valley, Illinois, with an average of 4h of sunshine.
When is the lowest UV index in Green Valley?
The months with the lowest UV index in Green Valley are January, February, November and December, with an average maximum UV index of 2.
What is the driest month in Green Valley?
The month with the least rainfall in Green Valley, Illinois, is February, when the rain falls for 5.1 days and typically collects 1.02" (26mm) of precipitation.
When is Daylight Saving Time (DST) in Green Valley?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Green Valley, 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 Green Valley?
May is the month with the most rainfall in Green Valley, Illinois. Rain falls for 17.7 days and accumulates 2.83" (72mm) of precipitation.
When it does not snow in Green Valley?
May through October are months without snowfall in Green Valley.
When are the longest days in Green Valley?
With an average of 15h and 0min of daylight, June has the longest days of the year.
What month has the most sunshine in Green Valley?
June has the most sunshine of the year in Green Valley, Illinois, with an average of 10.2h of sunshine.
What are the months with the highest UV index in Green Valley?
June through August, with an average maximum UV index of 6, are months with the highest UV index in Green Valley.
What is the warmest month in Green Valley?
Green Valley's temperatures tend to reach their peak averages in July, with a high of 82°F (27.8°C) and a low of 65.3°F (18.5°C).
What is the most humid month in Green Valley?
The most humid month is July, with an average relative humidity of 84%.
What is the least humid month in Green Valley?
With an average relative humidity of 71%, October is the least humid month in Green Valley.
What is the month with the shortest days in Green Valley?
The month with the shortest days in Green Valley, Illinois, is December, with an average of 9h and 18min of daylight.
Average temperature
Green Valley, IL
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (31.5°F).
The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure
Green Valley, IL
- Average pressure in January:
30.14"Hg - Average pressure in February:
30.12"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:
30.02"Hg - Average pressure in November:
30.11"Hg - Average pressure in December:
30.12"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed
Green Valley, IL
- Average wind speed in January:
10.4mph - Average wind speed in February:
10.4mph - Average wind speed in March:
10.3mph - Average wind speed in April:
10.6mph - Average wind speed in May:
8.8mph - Average wind speed in June:
7.7mph
- Average wind speed in July:
6.5mph - Average wind speed in August:
6.4mph - Average wind speed in September:
7.5mph - Average wind speed in October:
9.3mph - Average wind speed in November:
9.9mph - Average wind speed in December:
9.8mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity
Green Valley, IL
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Green Valley, IL
- Average rainfall in January:
1.06" - Average rainfall in February:
1.02" - Average rainfall in March:
1.57" - Average rainfall in April:
2.28" - Average rainfall in May:
2.83" - Average rainfall in June:
2.28"
- Average rainfall in July:
1.89" - Average rainfall in August:
1.61" - Average rainfall in September:
1.57" - Average rainfall in October:
1.61" - Average rainfall in November:
1.26" - Average rainfall in December:
1.06"
The wettest month (with the highest rainfall) is May (2.83").
The driest month (with the least rainfall) is February (1.02").
Average rainfall days
Green Valley, IL
- Average rainfall days in January:
5.3 days - Average rainfall days in February:
5.1 days - Average rainfall days in March:
11.8 days - Average rainfall days in April:
13.3 days - Average rainfall days in May:
17.7 days - Average rainfall days in June:
15.7 days
- Average rainfall days in July:
15.5 days - Average rainfall days in August:
12.4 days - Average rainfall days in September:
10.3 days - Average rainfall days in October:
9.8 days - Average rainfall days in November:
7.9 days - Average rainfall days in December:
6.6 days
The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is February (5.1 days).
Average snowfall
Green Valley, IL
The month with the highest snowfall is January (2.87").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Green Valley, IL
- Average snowfall days in January:
8.4 days - Average snowfall days in February:
6.4 days - Average snowfall days in March:
3.2 days - Average snowfall days in April:
0.5 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:
1.7 days - Average snowfall days in December:
5.4 days
The month with the highest number of snowfall days is January (8.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Green Valley, 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:
15h and 0min
- 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:
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:
4h and 0min - Average sunshine in February:
4h and 2min - Average sunshine in March:
6h and 3min - Average sunshine in April:
8h and 1min - Average sunshine in May:
9h and 1min - Average sunshine in June:
10h and 1min
- Average sunshine in July:
9h and 5min - Average sunshine in August:
9h and 5min - Average sunshine in September:
9h and 1min - Average sunshine in October:
5h and 5min - Average sunshine in November:
5h and 2min - Average sunshine in December:
4h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days
Green Valley, IL
- Average sunshine days in January:
18.3 days - Average sunshine days in February:
17.6 days - Average sunshine days in March:
16.1 days - Average sunshine days in April:
14.8 days - Average sunshine days in May:
11.8 days - Average sunshine days in June:
12 days
- Average sunshine days in July:
12 days - Average sunshine days in August:
15.3 days - Average sunshine days in September:
18.8 days - Average sunshine days in October:
19.4 days - Average sunshine days in November:
20 days - Average sunshine days in December:
19.7 days
The month with the most sunshine days is November (20 days).
The month with the least sunshine days is May (11.8 days).
Average UV index
Green Valley, 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
Green Valley, IL
The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is September (Cloud cover 30).
Average visibility
Green Valley, 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).
Green Valley, Illinois, USA
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