January weather forecastGrayville, IL
January
Weather in January
January, the same as December, is a wintry winter month in Grayville, Illinois, with an average temperature ranging between min 25.7°F (-3.5°C) and max 38.1°F (3.4°C).Temperature
Grayville's coldest month, January, generally records average temperatures ranging from a high of 38.1°F (3.4°C) to a low of 25.7°F (-3.5°C).Humidity
In January, the average relative humidity is 77%.Rainfall
In Grayville, in January, during 9.8 rainfall days, 2.56" (65mm) of precipitation is typically accumulated. Throughout the year, there are 167.7 rainfall days, and 38.23" (971mm) of precipitation is accumulated.Snowfall
Months with snowfall in Grayville, Illinois, are January through April, November and December. In Grayville, Illinois, in January, snow falls for 6.6 days, with typically accumulated 1.5" (38mm) of snow. Throughout the year, there are 20.5 snowfall days, and 6.06" (154mm) of snow is accumulated.Daylight
In January, the average length of the day in Grayville is 9h and 52min.On the first day of the month, sunrise is at 7:08 am and sunset at 4:42 pm. On the last day of January, in Grayville, sunrise is at 6:57 am and sunset at 5:12 pm CST.
Sunshine
January has the least sunshine of the year in Grayville, with an average of 4.3h 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 Grayville. A UV Index reading of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index of 2 in January interprets into the following recommendations:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. The solar radiation around mid-day is intense; avoid the Sun and stay safe. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Grayville, IL
- Average high temperature in January: 38.1°F
The warmest month (with the highest average high temperature) is July (85.5°F).
The month with the lowest average high temperature is January (38.1°F).
- Average low temperature in January: 25.7°F
The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).
Average pressure in January
Grayville, 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 (29.94"Hg).
Average wind speed in January
Grayville, IL
- Average wind speed in January: 10.1mph
The windiest months (with the highest average wind speed) are January and February (10.1mph).
The calmest month (with the lowest average wind speed) is July (5.9mph).
Average humidity in January
Grayville, IL
- Average humidity in January: 77%
The month with the highest relative humidity is July (80%).
The month with the lowest relative humidity is October (69%).
Average rainfall in January
Grayville, IL
- Average rainfall in January: 2.56"
The wettest month (with the highest rainfall) is April (5.2").
The driest month (with the least rainfall) is September (1.97").
Average rainfall days in January
Grayville, IL
- Average rainfall days in January: 9.8 days
The month with the highest number of rainy days is May (19.6 days).
The month with the least rainy days is January (9.8 days).
Average snowfall in January
Grayville, IL
- Average snowfall in January: 1.5"
The month with the highest snowfall is February (1.54").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
Grayville, IL
- Average snowfall days in January: 6.6 days
The month with the highest number of snowfall days is January (6.6 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
Grayville, IL
- Average daylight in January: 9h and 54min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in January: 4h and 18min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in January
Grayville, IL
- Average sunshine days in January: 15.1 days
The month with the most sunshine days is October (18.2 days).
The month with the least sunshine days is May (8.8 days).
Average UV index in January
Grayville, IL
- Average UV index in January: 2
The months with the highest UV index are May, 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
Grayville, IL
- Average cloud cover in January: 52
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 27).
Average visibility in January
Grayville, 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).
