January weather forecast
Greeley, CO

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Weather in January

January embraces the true winter conditions in Greeley, Colorado, with low temperatures becoming the norm. January sees some of the coldest days of the year, with lowest temperatures averaging at 22.1°F (-5.5°C). The city also experiences some snowfall during this month, creating a winter wonderland ambiance. Despite the cold temperatures, the sunshine hours aren't significantly reduced, providing a bit of relief. The comfort factor, however, drops due to the increased wind speed.

Temperature

With January's advent, Greeley sees an average high-temperature of a still wintry 40.8°F (4.9°C), subtly shifted from December's 38.3°F (3.5°C). Throughout January, an average nighttime temperature of 22.1°F (-5.5°C) is experienced in Greeley.

Humidity

January and December, with an average relative humidity of 64%, are the most humid months in Greeley.

Rainfall

In Greeley, in January, it is raining for 2.4 days, with typically 0.24" (6mm) of accumulated precipitation. Throughout the year, in Greeley, there are 71.4 rainfall days, and 7.6" (193mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. In January, in Greeley, Colorado, it is snowing for 4.4 days. Throughout January, 1.57" (40mm) of snow is accumulated. Throughout the year, there are 26.6 snowfall days, and 13.62" (346mm) of snow is accumulated.

Daylight

The average length of the day in January is 9h and 41min.
On the first day of the month, sunrise is at 7:21 am and sunset at 4:42 pm. On the last day of January, sunrise is at 7:09 am and sunset at 5:15 pm MST.

Sunshine

In January, the average sunshine is 6.8h.

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: In January, the UV index of 2 transforms into the following advice:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
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Frequently asked questions

How cold does it get in Greeley in January?

In Greeley, 40.8°F (4.9°C) is the average high-temperature and 22.1°F (-5.5°C) is the average low-temperature during January.

What is the most humid month in Greeley?

The months with the highest humidity in Greeley are January and December, with an average relative humidity of 64%.

What is the average humidity in January in Greeley?

In January, the average relative humidity is 64%.

How many days does it rain in January in Greeley?

In Greeley, in January, it is raining for 2.4 days, with typically 0.24" (6mm) of accumulated precipitation.

How much does it snow in Greeley in January?

In Greeley, Colorado, during January, snow falls for 4.4 days and regularly aggregates up to 1.57" (40mm) of snow.

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

The average day length in January in Greeley, Colorado, is 9h and 41min.

When are sunrise and sunset in January in Greeley?

On the first day of January in Greeley, Colorado, sunrise is at 7:21 am and sunset at 4:42 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 5:15 pm MST.

How many hours of sunshine does Greeley have in January?

In Greeley, the average sunshine duration in January is 6.8h.

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

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

How high is the UV index in January in Greeley?

In January, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a low health threat from exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
38.3°F 3.5°C
40.8°F 4.9°C
42.3°F 5.7°C
Average low temperature
20.1°F -6.6°C
22.1°F -5.5°C
22.5°F -5.3°C
Average pressure
30.11" 765mmHg
30.13" 765mmHg
30.07" 764mmHg
Average wind speed
6mph 9.7km/h
6.3mph 10.1km/h
7.1mph 11.4km/h
Average max. wind speed
6.7mph 10.8km/h
7.2mph 11.6km/h
7.9mph 12.7km/h
Average wind speed gusts
10.5mph 16.9km/h
11.4mph 18.3km/h
11.7mph 18.8km/h
Average humidity
64%
64%
63%
Average rainfall
0.2" 5mm
0.24" 6mm
0.35" 9mm
Average rainfall days
1.7
2.4
2.8
Average snowfall
1.18" 30mm
1.57" 40mm
2.36" 60mm
Average snowfall days
4.5
4.4
5.7
Average daylight
9h 2min
9h 4min
10h 4min
Average sunshine
6h 4min
6h 5min
6h 4min
Average sunshine days
25.9
25.1
21.2
Average UV index
2
2
2
Average cloud cover
27%
26%
29%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in January
Greeley, CO

Average temperature in January - Greeley, CO
  • Average high temperature in January: 40.8°F

The warmest month (with the highest average high temperature) is July (89.1°F).
The month with the lowest average high temperature is December (38.3°F).

  • Average low temperature in January: 22.1°F

The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is December (20.1°F).

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Average pressure in January
Greeley, CO

Average pressure in January - Greeley, CO
  • 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 (29.88"Hg).

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Average wind speed in January
Greeley, CO

Average wind speed in January - Greeley, CO
  • Average wind speed in January: 6.3mph

The windiest month (with the highest average wind speed) is April (8.5mph).
The calmest month (with the lowest average wind speed) is December (6mph).

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Average humidity in January
Greeley, CO

Average humidity in January - Greeley, CO
  • Average humidity in January: 64%

The months with the highest relative humidity are January and December (64%).
The months with the lowest relative humidity are August and September (44%).

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Average rainfall in January
Greeley, CO

Average rainfall in January - Greeley, CO
  • Average rainfall in January: 0.24"

The wettest month (with the highest rainfall) is May (1.61").
The driest month (with the least rainfall) is December (0.2").

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Average rainfall days in January
Greeley, CO

Average rainfall days in January - Greeley, CO
  • Average rainfall days in January: 2.4 days

The month with the highest number of rainy days is July (11.4 days).
The month with the least rainy days is November (1.6 days).

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Average snowfall in January
Greeley, CO

Average snowfall in January - Greeley, CO
  • Average snowfall in January: 1.57"

The month with the highest snowfall is February (2.36").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in January
Greeley, CO

Average snowfall days in January - Greeley, CO
  • Average snowfall days in January: 4.4 days

The month with the highest number of snowfall days is February (5.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in January /
Average sunshine in January
Greeley, CO

Average daylight in January / Average sunshine in January - Greeley, CO
  • 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: 6h and 5min

The month with the most sunshine is June (Average sunshine: 11h and 54min).
The months with the least sunshine are February and December (Average sunshine: 6h and 36min).

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Average sunshine days in January
Greeley, CO

Average sunshine days in January - Greeley, CO
  • Average sunshine days in January: 25.1 days

The month with the most sunshine days is December (25.9 days).
The month with the least sunshine days is July (16.7 days).

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Average UV index in January
Greeley, CO

Average UV index in January - Greeley, CO
  • 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
Greeley, CO

Average cloud cover in January - Greeley, CO
  • Average cloud cover in January: 26

The month with the most cloud cover is February (Cloud cover 29).
The month with the least cloud cover is June (Cloud cover 16).

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Average visibility in January
Greeley, CO

Average visibility in January - Greeley, CO
  • 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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Greeley, Colorado, USA

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