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
January tends to be the coldest month, with temperatures averaging a daily high of 37.4°F (3°C) and a low of 24.3°F (-4.3°C).Humidity
The average relative humidity in January is 76%.Rainfall
In Collinsville, in January, during 7.8 rainfall days, 2.2" (56mm) of precipitation is typically accumulated. Throughout the year, there are 149.9 rainfall days, and 33.94" (862mm) of precipitation is accumulated.Snowfall
January through March, September, November and December are months with snowfall. The month with the most snowfall in Collinsville is January, when snow falls for 7 days and typically aggregates up to 2.13" (54mm) of snow.Daylight
In January, the average length of the day in Collinsville is 9h and 50min.On the first day of the month, sunrise is at 7:17 am and sunset at 4:49 pm. On the last day of January, in Collinsville, sunrise is at 7:06 am and sunset at 5:20 pm CST.
Sunshine
The month with the least sunshine in Collinsville is January, with an average of 4.5h of sunshine.UV index
The months with the lowest UV index in Collinsville are January, February, November and December, with an average maximum UV index of 2. 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: In January, a daily UV index of 2 turns into the following recommendations:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Frequently asked questions
What time of the year is the coldest in Collinsville?
How cold is it in Collinsville in January?
What is the average humidity in January in Collinsville?
How many days does it rain in January in Collinsville?
When does it snow the most in Collinsville?
How much does it snow in Collinsville in January?
How many hours of daylight does Collinsville have in January?
When are sunrise and sunset in January in Collinsville?
What is the month with the least sunshine in Collinsville?
How many hours of sunshine does Collinsville have in January?
When is the lowest UV index in Collinsville?
What is the UV index intensity in January in Collinsville?
Average temperature in January
Collinsville, IL
- Average high temperature in January: 37.4°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (37.4°F).
- Average low temperature in January: 24.3°F
The month with the highest average low temperature is July (68.2°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in January
Collinsville, 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
Collinsville, IL
- Average wind speed in January: 9.5mph
The windiest month (with the highest average wind speed) is January (9.5mph).
The calmest month (with the lowest average wind speed) is July (5.6mph).
Average humidity in January
Collinsville, IL
- Average humidity in January: 76%
The months with the highest relative humidity are May, July and August (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall in January
Collinsville, IL
- Average rainfall in January: 2.2"
The wettest month (with the highest rainfall) is May (4.17").
The driest month (with the least rainfall) is February (1.77").
Average rainfall days in January
Collinsville, IL
- Average rainfall days in January: 7.8 days
The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is January (7.8 days).
Average snowfall in January
Collinsville, IL
- Average snowfall in January: 2.13"
The month with the highest snowfall is January (2.13").
The months with the least snowfall are April, May, June, July, August and October (0").
Average snowfall days in January
Collinsville, IL
- Average snowfall days in January: 7 days
The month with the highest number of snowfall days is January (7 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in January /
Average sunshine in January
Collinsville, IL
- Average daylight in January: 9h and 5min
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 30min).
- Average sunshine in January: 4h and 3min
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 30min).
Average sunshine days in January
Collinsville, IL
- Average sunshine days in January: 17 days
The month with the most sunshine days is December (18.6 days).
The month with the least sunshine days is May (11.6 days).
Average UV index in January
Collinsville, 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
Collinsville, IL
- Average cloud cover in January: 51
The month with the most cloud cover is January (Cloud cover 51).
The months with the least cloud cover are June and August (Cloud cover 28).
Average visibility in January
Collinsville, 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).
Collinsville, Illinois, USA
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