January weather forecastDover, IL

January

Weather in January

January, like December, is another subzero cold winter month in Dover, Illinois, with an average temperature ranging between min 16.5°F (-8.6°C) and max 28.8°F (-1.8°C).

Temperature

Dover witnesses the coldest weather in January, with temperatures averaging a high of 28.8°F (-1.8°C) and a low of 16.5°F (-8.6°C).

Humidity

The average relative humidity in January is 83%.

Rainfall

The month with the least rainfall is January, when the rain falls for 4.8 days and typically collects 0.75" (19mm) of precipitation.

Snowfall

Months with snowfall are January through April, October through December. January is the month with the most snowfall. Snow falls for 10.4 days and accumulates 2.09" (53mm) of snow.

Daylight

In January, the average length of the day is 9h and 35min.
On the first day of the month, sunrise is at 7:23 am and sunset at 4:38 pm. On the last day of January, in Dover, sunrise is at 7:10 am and sunset at 5:11 pm CST.

Sunshine

The month with the least sunshine is January, with an average of 3.8h of sunshine.

UV index

January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low health risk from unsafe exposure to UV radiation for average individuals.
Note: The maximum UV index, 1 during January, leads to the following recommendations:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.

Updated: Jul 16, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

In Dover, January is the coldest month, with temperatures averaging a high of 28.8°F (-1.8°C) and a low of 16.5°F (-8.6°C).

Dover in January has an average high-temperature of 28.8°F (-1.8°C) and an average low-temperature of 16.5°F (-8.6°C).

In Dover, the average relative humidity in January is 83%.

The month with the least rainfall is January, when the rain falls for 4.8 days and typically collects 0.75" (19mm) of precipitation.

In Dover, in January, during 4.8 rainfall days, 0.75" (19mm) of precipitation is typically accumulated.

The month with the most snowfall in Dover is January, when snow falls for 10.4 days and typically aggregates up to 2.09" (53mm) of snow.

In Dover, in January, snow falls for 10.4 days, with typically accumulated 2.09" (53mm) of snow.

In Dover, Illinois, the average day length in January is 9h and 35min.

On the first day of January in Dover, sunrise is at 7:23 am and sunset at 4:38 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 5:11 pm CST.

With an average of 3.8h of sunshine, January has the least sunshine of the year in Dover.

In Dover, Illinois, the average sunshine duration in January is 3.8h.

January and December, with an average maximum UV index of 1, are months with the lowest UV index.

The average daily maximum UV index in January is 1. A UV Index estimate of 2, and below, represents a low health risk from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year January F M A M J J A S O N D

Dec

January

Feb

Average high temperature

34.5°F

28.8°F

32.7°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

10.3mph

10.9mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

17.5

17.8

15.6

Average UV index

Average cloud cover

Average visibility

Average temperature in January
Dover, IL

Average high temperature in January: 28.8°F

The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (28.8°F).

Average low temperature in January: 16.5°F

The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).

Average pressure in January
Dover, 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 (29.91"Hg).

Average wind speed in January
Dover, IL

Average wind speed in January: 10.3mph

The windiest month (with the highest average wind speed) is April (10.5mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).

Average humidity in January
Dover, IL

Average humidity in January: 83%

The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (72%).

Average rainfall in January
Dover, IL

Average rainfall in January: 0.75"

The wettest month (with the highest rainfall) is May (2.91").
The driest month (with the least rainfall) is January (0.75").

Average rainfall days in January
Dover, IL

Average rainfall days in January: 4.8 days

The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is February (4.5 days).

Average snowfall in January
Dover, 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
Dover, IL

Average snowfall days in January: 10.4 days

The month with the highest number of snowfall days is January (10.4 days).
The months with the least snowfall days are May, June, July and August (0 days).

Average daylight in January /
Average sunshine in January
Dover, IL

Average daylight in January: 9h and 36min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).

Average sunshine in January: 3h and 48min

The months with the most sunshine are June and July (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).

Average sunshine days in January
Dover, IL

Average sunshine days in January: 17.8 days

The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is June (11.8 days).

Average UV index in January
Dover, IL

Average UV index in January: 1

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

Average cloud cover in January
Dover, IL

Average cloud cover in January: 60

The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is September (Cloud cover 32).

Average visibility in January
Dover, 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).