Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
Green Valley's January weather, marked by an average high temperature of 31.5°F (-0.3°C) and an average low temperature of 19.8°F (-6.8°C), is the coldest in the year.Humidity
In January, the average relative humidity is 80%.Rainfall
In Green Valley, in January, it is raining for 5.3 days, with typically 1.06" (27mm) of accumulated precipitation. Throughout the year, there are 131.4 rainfall days, and 20.08" (510mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, November and December. The month with the most snowfall is January, when snow falls for 8.4 days and typically aggregates up to 2.87" (73mm) of snow.Daylight
In January, the average length of the day is 9h and 41min.On the first day of the month, sunrise is at 7:21 am and sunset at 4:42 pm. On the last day of January, sunrise is at 7:08 am and sunset at 5:15 pm CST.
Sunshine
January has the least sunshine of the year, with an average of 4h of sunshine.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Green Valley. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the average person.Note: A maximum high UV index of 2 in January translates into the following recommendations:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. To guard against the harmful effects of the Sun, minimize exposure during midday. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the coldest?
How cold is it in January?
What is the average humidity in January?
How much does it rain in January?
When does it snow the most?
How much does it snow in January?
What is the average length of the day in January in Green Valley?
What time are sunrise and sunset in January?
What is the month with the least sunshine?
How many hours of sunshine does Green Valley have in January?
What is the month with the lowest UV index?
What is the UV index reading in January?
Average temperature in January
Green Valley, IL
- Average high temperature in January: 31.5°F
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).
- Average low temperature in January: 19.8°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 in January
Green Valley, IL
- Average pressure in January: 30.14"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 in January
Green Valley, IL
- Average wind speed in January: 10.4mph
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 in January
Green Valley, IL
- Average humidity in January: 80%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (71%).
Average rainfall in January
Green Valley, IL
- Average rainfall in January: 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 in January
Green Valley, IL
- Average rainfall days in January: 5.3 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 in January
Green Valley, IL
- Average snowfall in January: 2.87"
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 in January
Green Valley, IL
- Average snowfall days in January: 8.4 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 in January /
Average sunshine in January
Green Valley, IL
- Average daylight in January: 9h and 4min
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
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 in January
Green Valley, IL
- Average sunshine days in January: 18.3 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 in January
Green Valley, IL
- Average UV index in January: 2
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 in January
Green Valley, IL
- Average cloud cover in January: 57
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 in January
Green Valley, IL
- Average visibility in January: 6mi
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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