January weather forecast
Colusa, IL

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Weather in January

January, the same as December, in Colusa, Illinois, is another subzero cold winter month, with temperature in the range of an average high of 30.9°F (-0.6°C) and an average low of 18.7°F (-7.4°C).

Temperature

In Colusa, the lowest average temperatures are observed in January, with a high of 30.9°F (-0.6°C) and a low of 18.7°F (-7.4°C).

Humidity

The average relative humidity in January in Colusa, Illinois, is 80%.

Rainfall

The month with the least rainfall is January, when the rain falls for 4.3 days and typically collects 0.83" (21mm) of precipitation.

Snowfall

Months with snowfall are January through April, October through December. The month with the most snowfall is January, when snow falls for 8.5 days and typically aggregates up to 3.15" (80mm) of snow.

Daylight

In Colusa, Illinois, the average length of the day in January is 9h and 40min.
On the first day of January, sunrise is at 7:28 am and sunset at 4:48 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 5:20 pm CST.

Sunshine

With an average of 4.1h of sunshine, January has the least sunshine of the year in Colusa.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: The maximum UV index of 2 during January leads to these instructions:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
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Frequently asked questions

What is the coldest month in Colusa?

In Colusa, January records the average lowest temperatures, peaking at 30.9°F (-0.6°C) and reaching a low of 18.7°F (-7.4°C).

How cold is it in Colusa in January?

The high-temperature in Colusa during January is 30.9°F (-0.6°C) and the low-temperature is 18.7°F (-7.4°C).

What is the average humidity in January in Colusa?

In January, the average relative humidity in Colusa, Illinois, is 80%.

What is the driest month in Colusa?

January is the month with the least rainfall in Colusa. Rain falls for 4.3 days and accumulates 0.83" (21mm) of precipitation.

How much does it rain in Colusa in January?

In Colusa, in January, it is raining for 4.3 days, with typically 0.83" (21mm) of accumulated precipitation.

What is the snowiest month in Colusa?

The month with the most snowfall in Colusa, Illinois, is January, when snow falls for 8.5 days and typically aggregates up to 3.15" (80mm) of snow.

How much does it snow in Colusa in January?

In Colusa, during January, snow falls for 8.5 days and regularly aggregates up to 3.15" (80mm) of snow.

How many hours of daylight does Colusa have in January?

The average day length in January in Colusa, Illinois, is 9h and 40min.

When are sunrise and sunset in January in Colusa?

On the first day of January, sunrise is at 7:28 am and sunset at 4:48 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 5:20 pm CST.

What is the month with the least sunshine in Colusa?

With an average of 4.1h of sunshine, January has the least sunshine of the year in Colusa, Illinois.

How long on average sun shines in January in Colusa?

In Colusa, the average sunshine duration in January is 4.1h.

When is the lowest UV index in Colusa?

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.

How high is the UV index in January in Colusa?

In January, the average daily maximum UV index in Colusa, Illinois, is 2. A UV Index of 2, and less, symbolizes a low health threat from unsafe exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
37°F 2.8°C
30.9°F -0.6°C
35.8°F 2.1°C
Average low temperature
25.5°F -3.6°C
18.7°F -7.4°C
22.3°F -5.4°C
Average pressure
30.11" 765mmHg
30.15" 766mmHg
30.12" 765mmHg
Average wind speed
10.1mph 16.3km/h
10.6mph 17.1km/h
10.5mph 16.9km/h
Average max. wind speed
10.7mph 17.2km/h
11.3mph 18.2km/h
11.1mph 17.9km/h
Average wind speed gusts
16mph 25.7km/h
16.8mph 27km/h
16.5mph 26.6km/h
Average humidity
79%
80%
79%
Average rainfall
0.98" 25mm
0.83" 21mm
1.1" 28mm
Average rainfall days
5.6
4.3
4.6
Average snowfall
1.3" 33mm
3.15" 80mm
2.17" 55mm
Average snowfall days
5.4
8.5
6.2
Average daylight
9h 2min
9h 4min
10h 4min
Average sunshine
4h 3min
4h 1min
4h 2min
Average sunshine days
20
19.7
17.6
Average UV index
2
2
2
Average cloud cover
51%
56%
54%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in January
Colusa, IL

Average temperature in January - Colusa, IL
  • Average high temperature in January: 30.9°F

The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (30.9°F).

  • Average low temperature in January: 18.7°F

The month with the highest average low temperature is July (66.2°F).
The coldest month (with the lowest average low temperature) is January (18.7°F).

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Average pressure in January
Colusa, IL

Average pressure in January - Colusa, IL
  • Average pressure in January: 30.15"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

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Average wind speed in January
Colusa, IL

Average wind speed in January - Colusa, IL
  • Average wind speed in January: 10.6mph

The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.7mph).

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Average humidity in January
Colusa, IL

Average humidity in January - Colusa, IL
  • Average humidity in January: 80%

The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in January
Colusa, IL

Average rainfall in January - Colusa, IL
  • Average rainfall in January: 0.83"

The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the least rainfall) is January (0.83").

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Average rainfall days in January
Colusa, IL

Average rainfall days in January - Colusa, IL
  • Average rainfall days in January: 4.3 days

The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (4.3 days).

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Average snowfall in January
Colusa, IL

Average snowfall in January - Colusa, IL
  • Average snowfall in January: 3.15"

The month with the highest snowfall is January (3.15").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in January
Colusa, IL

Average snowfall days in January - Colusa, IL
  • Average snowfall days in January: 8.5 days

The month with the highest number of snowfall days is January (8.5 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
Colusa, IL

Average daylight in January / Average sunshine in January - Colusa, 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: 4h and 1min

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: 4h and 6min).

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Average sunshine days in January
Colusa, IL

Average sunshine days in January - Colusa, IL
  • Average sunshine days in January: 19.7 days

The month with the most sunshine days is December (20 days).
The months with the least sunshine days are May and June (11.8 days).

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Average UV index in January
Colusa, IL

Average UV index in January - Colusa, IL
  • Average UV index in January: 2

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in January
Colusa, IL

Average cloud cover in January - Colusa, IL
  • Average cloud cover in January: 56

The month with the most cloud cover is January (Cloud cover 56).
The months with the least cloud cover are August and September (Cloud cover 30).

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Average visibility in January
Colusa, IL

Average visibility in January - Colusa, 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).

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Colusa, Illinois, USA

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