January weather forecast
Fort Collins, CO

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A scenic residential estate in Fort Collins, Colorado
A scenic residential estate in Fort Collins, Colorado

Weather in January

January, in Fort Collins, Colorado, is the coldest month of the year with the peak temperatures peaking no more than 37.9°F (3.3°C), while the lowest recorded temperature is a chilling 20.3°F (-6.5°C). Snow is a common sight in this month, blanketing the town in a beautiful white layer. Fort Collins is a winter wonderland! Dress warmly, as the cooler weather persists throughout the month and winter activities are popular among locals. The skies are also darker with only 9.7 daylight hours.

Temperature

January's presence marks an average high-temperature of a still wintry 37.9°F (3.3°C), subtly varied from December's 36.1°F (2.3°C). An average low-temperature of 20.3°F (-6.5°C) is expected in Fort Collins during January.

Humidity

In January, the average relative humidity in Fort Collins is 65%.

Rainfall

January is the month with the least rainfall. Rain falls for 1.2 days and accumulates 0.12" (3mm) of precipitation.

Snowfall

Months with snowfall in Fort Collins are January through May, October through December. In Fort Collins, in January, during 2.8 snowfall days, 0.91" (23mm) of snow is typically accumulated. In Fort Collins, during the entire year, snow falls for 21.2 days and aggregates up to 15.98" (406mm) of snow.

Daylight

The average length of the day in January is 9h and 40min.
On the first day of January, sunrise is at 7:23 am and sunset at 4:43 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 5:16 pm MST.

Sunshine

The average sunshine in January is 7h.

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 estimate of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the average person.
Note: The UV index of 2 during January translates into the following guidance:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold does it get in Fort Collins in January?

In January, the average high-temperature and low-temperature in Fort Collins, Colorado, are 37.9°F (3.3°C) and 20.3°F (-6.5°C) respectively.

What is the average humidity in January in Fort Collins?

In Fort Collins, Colorado, the average relative humidity in January is 65%.

What is the driest month in Fort Collins?

The month with the least rainfall is January, when the rain falls for 1.2 days and typically collects 0.12" (3mm) of precipitation.

How much does it rain in Fort Collins in January?

In Fort Collins, Colorado, in January, it is raining for 1.2 days, with typically 0.12" (3mm) of accumulated precipitation.

How much does it snow in Fort Collins in January?

In Fort Collins, Colorado, during January, snow falls for 2.8 days and regularly aggregates up to 0.91" (23mm) of snow.

How many hours of daylight does Fort Collins have in January?

In January, the average day length in Fort Collins, Colorado, is 9h and 40min.

What time are sunrise and sunset in January in Fort Collins?

In January, on the first day of the month, sunrise is at 7:23 am and sunset at 4:43 pm. On the last day of the month, in Fort Collins, sunrise is at 7:10 am and sunset at 5:16 pm MST.

How long on average sun shines in January in Fort Collins?

In January, the average sunshine duration is 7h.

What are the months with the lowest UV index in Fort Collins?

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

What is the UV index reading in January in Fort Collins?

The average daily maximum UV index in January is 2. A UV Index estimate of 2, and below, represents a minimal hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Fort Collins, CO

Average temperature in January - Fort Collins, CO
  • Average high temperature in January: 37.9°F

The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is December (36.1°F).

  • Average low temperature in January: 20.3°F

The month with the highest average low temperature is July (56.8°F).
The coldest month (with the lowest average low temperature) is December (18.7°F).

Average pressure in January
Fort Collins, CO

Average pressure in January - Fort Collins, CO
  • 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).

Average wind speed in January
Fort Collins, CO

Average wind speed in January - Fort Collins, CO
  • Average wind speed in January: 7.2mph

The windiest month (with the highest average wind speed) is April (7.6mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).

Average humidity in January
Fort Collins, CO

Average humidity in January - Fort Collins, CO
  • Average humidity in January: 65%

The month with the highest relative humidity is February (67%).
The months with the lowest relative humidity are June, August and September (45%).

Average rainfall in January
Fort Collins, CO

Average rainfall in January - Fort Collins, CO
  • Average rainfall in January: 0.12"

The wettest month (with the highest rainfall) is May (1.5").
The driest month (with the least rainfall) is January (0.12").

Average rainfall days in January
Fort Collins, CO

Average rainfall days in January - Fort Collins, CO
  • Average rainfall days in January: 1.2 days

The month with the highest number of rainy days is July (14.6 days).
The month with the least rainy days is January (1.2 days).

Average snowfall in January
Fort Collins, CO

Average snowfall in January - Fort Collins, CO
  • Average snowfall in January: 0.91"

The month with the highest snowfall is April (3.27").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in January
Fort Collins, CO

Average snowfall days in January - Fort Collins, CO
  • Average snowfall days in January: 2.8 days

The month with the highest number of snowfall days is February (4.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in January /
Average sunshine in January
Fort Collins, CO

Average daylight in January / Average sunshine in January - Fort Collins, 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: 7h and 0min

The month with the most sunshine is June (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 6h and 42min).

Average sunshine days in January
Fort Collins, CO

Average sunshine days in January - Fort Collins, CO
  • Average sunshine days in January: 27.5 days

The months with the most sunshine days are January and December (27.5 days).
The month with the least sunshine days is July (14.9 days).

Average UV index in January
Fort Collins, CO

Average UV index in January - Fort Collins, CO
  • Average UV index in January: 2

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

Average cloud cover in January
Fort Collins, CO

Average cloud cover in January - Fort Collins, CO
  • Average cloud cover in January: 22

The months with the most cloud cover are February, April and May (Cloud cover 27).
The month with the least cloud cover is September (Cloud cover 16).

Average visibility in January
Fort Collins, CO

Average visibility in January - Fort Collins, 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).

Fort Collins, Colorado, USA

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