January weather forecastFarmington, IL
January
Weather in January
January, like December, is a freezing cold winter month in Farmington, Illinois, with an average temperature varying between 18.3°F (-7.6°C) and 30.4°F (-0.9°C).Temperature
The coldest period tends to be January, when average temperatures fluctuate between a high of 30.4°F (-0.9°C) and a low of 18.3°F (-7.6°C).Humidity
In January, the average relative humidity is 81%.Rainfall
In Farmington, Illinois, during January, the rain falls for 6.1 days and regularly aggregates up to 1.46" (37mm) of precipitation. In Farmington, during the entire year, the rain falls for 145.3 days and collects up to 28.62" (727mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. January is the month with the most snowfall in Farmington, Illinois. Snow falls for 10.6 days and accumulates 3.78" (96mm) of snow.Daylight
In January, the average length of the day is 9h and 39min.On the first day of the month, sunrise is at 7:23 am and sunset at 4:43 pm. On the last day of January, in Farmington, sunrise is at 7:10 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
The months with the lowest UV index in Farmington are January and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for average individuals.Note: The maximum daily UV index of 1 in January interprets into the following recommendations:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Farmington, IL
- Average high temperature in January: 30.4°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (30.4°F).
- Average low temperature in January: 18.3°F
The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).
Average pressure in January
Farmington, 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
Farmington, IL
- Average wind speed in January: 10.4mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).
Average humidity in January
Farmington, IL
- Average humidity in January: 81%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall in January
Farmington, IL
- Average rainfall in January: 1.46"
The wettest month (with the highest rainfall) is May (4.29").
The driest months (with the least rainfall) are February and December (1.42").
Average rainfall days in January
Farmington, IL
- Average rainfall days in January: 6.1 days
The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is February (5.8 days).
Average snowfall in January
Farmington, IL
- Average snowfall in January: 3.78"
The month with the highest snowfall is January (3.78").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Farmington, IL
- Average snowfall days in January: 10.6 days
The month with the highest number of snowfall days is January (10.6 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
Farmington, IL
- Average daylight in January: 9h and 42min
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
Farmington, IL
- Average sunshine days in January: 15.4 days
The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is June (11.3 days).
Average UV index in January
Farmington, IL
- Average UV index in January: 1
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in January
Farmington, 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 29).
Average visibility in January
Farmington, 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).
