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 is Forrest's coldest month, registering average high temperatures of 30.6°F (-0.8°C) and lows of 18.5°F (-7.5°C).Humidity
In Forrest, the average relative humidity in January is 82%.Rainfall
January is the month with the least rainfall in Forrest. Rain falls for 5 days and accumulates 0.79" (20mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. January is the month with the most snowfall. Snow falls for 10.6 days and accumulates 2.09" (53mm) of snow.Daylight
In January, the average length of the day in Forrest is 9h and 39min.On the first day of January, sunrise is at 7:17 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:04 am and sunset at 5:09 pm CST.
Sunshine
With an average of 3.8h of sunshine, January has the least sunshine of the year.UV index
The average daily maximum UV index in January is 2. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the ordinary person.Note: In January, the UV index of 2 transforms into the following advice:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. To protect against the Sun's most potent rays, avoid direct exposure around midday. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Frequently asked questions
What are the coldest months in Forrest?
How cold is it in Forrest in January?
What is the average humidity in January in Forrest?
What is the driest month in Forrest?
How much does it rain in Forrest in January?
What is the snowiest month in Forrest?
How much does it snow in Forrest in January?
How many hours of daylight does Forrest have in January?
What time are sunrise and sunset in January in Forrest?
What is the month with the least sunshine in Forrest?
How many hours of sunshine does Forrest have in January?
How high is the UV index in January in Forrest?
Average temperature in January
Forrest, IL
- Average high temperature in January: 30.6°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (30.6°F).
- Average low temperature in January: 18.5°F
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (18.5°F).
Average pressure in January
Forrest, IL
- Average pressure in January: 30.13"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in January
Forrest, IL
- Average wind speed in January: 10.8mph
The windiest month (with the highest average wind speed) is January (10.8mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in January
Forrest, IL
- Average humidity in January: 82%
The month with the highest relative humidity is July (86%).
The month with the lowest relative humidity is October (71%).
Average rainfall in January
Forrest, IL
- Average rainfall in January: 0.79"
The wettest month (with the highest rainfall) is May (2.56").
The driest month (with the least rainfall) is January (0.79").
Average rainfall days in January
Forrest, IL
- Average rainfall days in January: 5 days
The month with the highest number of rainy days is May (17 days).
The months with the least rainy days are January and February (5 days).
Average snowfall in January
Forrest, IL
- Average snowfall in January: 2.09"
The month with the highest snowfall is January (2.09").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Forrest, 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
Forrest, 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: 3h and 5min
The month with the most sunshine is June (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in January
Forrest, IL
- Average sunshine days in January: 17.2 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (11.4 days).
Average UV index in January
Forrest, IL
- Average UV index in January: 2
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in January
Forrest, IL
- Average cloud cover in January: 59
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is September (Cloud cover 32).
Average visibility in January
Forrest, 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).
Forrest, Illinois, USA
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