January weather forecast
Annawan, IL

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Weather in January

January, the same as December, in Annawan, Illinois, is another subzero cold winter month, with an average temperature fluctuating between 28.8°F (-1.8°C) and 16.7°F (-8.5°C).

Temperature

During the coldest month, January, temperatures average a high of 28.8°F (-1.8°C) and a low of 16.7°F (-8.5°C).

Humidity

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

Rainfall

The months with the least rainfall in Annawan are January and December Rain falls for 6.1 days and accumulates 1.42" (36mm) of rain.

Snowfall

Months with snowfall in Annawan are January through April, October through December. January is the month with the most snowfall in Annawan. Snow falls for 11.4 days and accumulates 3.66" (93mm) of snow.

Daylight

The average length of the day in January in Annawan is 9h and 35min.
On the first day of the month, sunrise is at 7:25 am and sunset at 4:40 pm. On the last day of January, sunrise is at 7:12 am and sunset at 5:13 pm CST.

Sunshine

The month with the least sunshine is January, with an average of 3.9h of sunshine.

UV index

The month with the lowest UV index in Annawan is January, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 1 in January transforms into the following instructions:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
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Frequently asked questions

What time of the year is the coldest in Annawan?

January brings the lowest temperatures, with an average high of 28.8°F (-1.8°C) and an average low of 16.7°F (-8.5°C).

How cold is it in Annawan in January?

An average high-temperature, in January, in Annawan, is 28.8°F (-1.8°C) and the average low-temperature is 16.7°F (-8.5°C).

What is the average humidity in January in Annawan?

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

What is the driest month in Annawan?

January and December are months with the least rain in Annawan when the rain falls for 6.1 days and typically aggregates up to 1.42" (36mm) of rain.

How many days does it rain in January in Annawan?

In Annawan, during January, the rain falls for 6.1 days and regularly aggregates up to 1.42" (36mm) of precipitation.

When does it snow the most in Annawan?

The month with the most snowfall in Annawan is January, when snow falls for 11.4 days and typically aggregates up to 3.66" (93mm) of snow.

How much does it snow in Annawan in January?

In Annawan, Illinois, in January, snow falls for 11.4 days, with typically accumulated 3.66" (93mm) of snow.

What is the average length of the day in January in Annawan?

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

When are sunrise and sunset in January in Annawan?

On the first day of January in Annawan, Illinois, sunrise is at 7:25 am and sunset at 4:40 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 5:13 pm CST.

What is the month with the least sunshine in Annawan?

The month with the least sunshine in Annawan is January, with an average of 3.9h of sunshine.

How long on average sun shines in January in Annawan?

In Annawan, the average sunshine duration in January is 3.9h.

What is the month with the lowest UV index in Annawan?

With an average maximum UV index of 1, January is the month with the lowest UV index.

How high is the UV index in January in Annawan?

In Annawan, the average daily maximum UV index in January is 1. A UV Index estimate of 2, and below, represents a low health risk from exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
34.7°F 1.5°C
28.8°F -1.8°C
33.3°F 0.7°C
Average low temperature
24.1°F -4.4°C
16.7°F -8.5°C
20.5°F -6.4°C
Average pressure
30.11" 765mmHg
30.13" 765mmHg
30.11" 765mmHg
Average wind speed
9.9mph 15.9km/h
10.4mph 16.7km/h
10.4mph 16.7km/h
Average max. wind speed
10.6mph 17.1km/h
11.2mph 18km/h
11.1mph 17.9km/h
Average wind speed gusts
16mph 25.7km/h
16.8mph 27km/h
16.6mph 26.7km/h
Average humidity
82%
83%
82%
Average rainfall
1.42" 36mm
1.42" 36mm
1.57" 40mm
Average rainfall days
7.9
6.1
5.6
Average snowfall
1.97" 50mm
3.66" 93mm
3.23" 82mm
Average snowfall days
7.3
11.4
9.1
Average daylight
9h 1min
9h 4min
10h 4min
Average sunshine
4h 1min
3h 5min
4h 1min
Average sunshine days
17.5
15.2
13.6
Average UV index
2
1
2
Average cloud cover
55%
58%
55%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in January
Annawan, IL

Average temperature in January - Annawan, IL
  • Average high temperature in January: 28.8°F

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (28.8°F).

  • Average low temperature in January: 16.7°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 (16.7°F).

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Average pressure in January
Annawan, IL

Average pressure in January - Annawan, 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).

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Average wind speed in January
Annawan, IL

Average wind speed in January - Annawan, IL
  • Average wind speed in January: 10.4mph

The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).

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Average humidity in January
Annawan, IL

Average humidity in January - Annawan, IL
  • Average humidity in January: 83%

The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).

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Average rainfall in January
Annawan, IL

Average rainfall in January - Annawan, IL
  • Average rainfall in January: 1.42"

The wettest month (with the highest rainfall) is May (4.45").
The driest months (with the least rainfall) are January and December (1.42").

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Average rainfall days in January
Annawan, IL

Average rainfall days in January - Annawan, IL
  • Average rainfall days in January: 6.1 days

The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is February (5.6 days).

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Average snowfall in January
Annawan, IL

Average snowfall in January - Annawan, IL
  • Average snowfall in January: 3.66"

The month with the highest snowfall is January (3.66").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in January
Annawan, IL

Average snowfall days in January - Annawan, IL
  • Average snowfall days in January: 11.4 days

The month with the highest number of snowfall days is January (11.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in January / Average sunshine in January - Annawan, IL
  • Average daylight in January: 9h and 4min

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 5min

The months with the most sunshine are June and July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).

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Average sunshine days in January
Annawan, IL

Average sunshine days in January - Annawan, IL
  • Average sunshine days in January: 15.2 days

The month with the most sunshine days is November (18 days).
The month with the least sunshine days is June (10.2 days).

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Average UV index in January
Annawan, IL

Average UV index in January - Annawan, IL
  • Average UV index in January: 1

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

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Average cloud cover in January
Annawan, IL

Average cloud cover in January - Annawan, IL
  • Average cloud cover in January: 58

The month with the most cloud cover is January (Cloud cover 58).
The months with the least cloud cover are August and September (Cloud cover 30).

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Average visibility in January
Annawan, IL

Average visibility in January - Annawan, 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).

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Annawan, Illinois, USA

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