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
In Greenville, Illinois, January records the lowest average temperatures, peaking at 36.1°F (2.3°C) and reaching a low of 23.4°F (-4.8°C).Humidity
In Greenville, the average relative humidity in January is 77%.Rainfall
In Greenville, during January, the rain falls for 6.3 days and regularly aggregates up to 1.5" (38mm) of precipitation. In Greenville, during the entire year, the rain falls for 137.9 days and collects up to 24.88" (632mm) of precipitation.Snowfall
Months with snowfall in Greenville are January through March, November and December. In Greenville, Illinois, in January, during 5.8 snowfall days, 1.57" (40mm) of snow is typically accumulated. In Greenville, during the entire year, snow falls for 18.3 days and aggregates up to 6.22" (158mm) of snow.Daylight
In Greenville, the average length of the day in January is 9h and 49min.On the first day of the month, sunrise is at 7:16 am and sunset at 4:46 pm. On the last day of January, sunrise is at 7:04 am and sunset at 5:17 pm CST.
Sunshine
January and February, with an average of 4.5h of sunshine, are months with the least sunshine in Greenville.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum UV index of 2 during January translates into these guidelines:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Frequently asked questions
What is the coldest time of year in Greenville?
How cold is it in Greenville in January?
What is the average humidity in January in Greenville?
How many days does it rain in January in Greenville?
How much does it snow in Greenville in January?
What is the average length of the day in January in Greenville?
What time are sunrise and sunset in January in Greenville?
What are the months with the least sunshine in Greenville?
How long on average sun shines in January in Greenville?
What is the month with the lowest UV index in Greenville?
How high is the UV index in January in Greenville?
Average temperature in January
Greenville, IL
- Average high temperature in January: 36.1°F
The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (36.1°F).
- Average low temperature in January: 23.4°F
The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).
Average pressure in January
Greenville, IL
- Average pressure in January: 30.16"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in January
Greenville, IL
- Average wind speed in January: 10mph
The windiest month (with the highest average wind speed) is January (10mph).
The calmest month (with the lowest average wind speed) is July (5.8mph).
Average humidity in January
Greenville, IL
- Average humidity in January: 77%
The month with the highest relative humidity is July (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall in January
Greenville, IL
- Average rainfall in January: 1.5"
The wettest month (with the highest rainfall) is June (3.43").
The driest month (with the least rainfall) is February (1.26").
Average rainfall days in January
Greenville, IL
- Average rainfall days in January: 6.3 days
The month with the highest number of rainy days is May (17.2 days).
The month with the least rainy days is January (6.3 days).
Average snowfall in January
Greenville, IL
- Average snowfall in January: 1.57"
The month with the highest snowfall is December (1.89").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in January
Greenville, IL
- Average snowfall days in January: 5.8 days
The month with the highest number of snowfall days is January (5.8 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
Greenville, IL
- Average daylight in January: 9h and 5min
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 30min).
- Average sunshine in January: 4h and 3min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 30min).
Average sunshine days in January
Greenville, IL
- Average sunshine days in January: 19.7 days
The month with the most sunshine days is December (20 days).
The month with the least sunshine days is May (11.8 days).
Average UV index in January
Greenville, 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
Greenville, IL
- Average cloud cover in January: 52
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 in January
Greenville, IL
- Average visibility in January: 6mi
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).
Greenville, Illinois, USA
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