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The best time to visit Fort Collins

Month-by-month climate averages for Fort Collins, CO, so you can pick your dates on data rather than guesswork.

Short answer

The most comfortable time to visit Fort Collins is usually April, September and October, when daytime highs sit in the pleasant 60-78°F range and the heaviest May rain is behind you.

Fort Collins is warmest in July (highs near 86°F) and coldest in February (lows around 15°F), with roughly 15 inches of precipitation across the year and May the wettest month. The sweet spot for most visitors is April, September and October. Expect overnight frost in January, February, March, November and December.

These are long-run averages. For the actual days you are travelling, check the live Fort Collins forecast - and note how much the models agree, because that tells you how much to trust it.

Fort Collins weather by month

what to expect in Fort Collins through the year, 1991-2020 averages

Here is Fort Collins's typical weather in each month: the average daytime high and overnight low in °F, how each month feels, and the wettest month marked. Use it to plan any trip to Fort Collins by season.

Jan
37°
18°
Cold
Feb
41°
15°
Cool
Mar
52°
27°
Cool
Apr
60°
32°
Mild
May
69°
44°
Mild
Wettest
Jun
79°
54°
Warm
Jul
86°
58°
Hot
Aug
84°
57°
Warm
Sep
78°
48°
Warm
Oct
63°
36°
Mild
Nov
49°
27°
Cool
Dec
40°
19°
Cool

Common questions

When is the best time to visit Fort Collins?
The most comfortable time to visit Fort Collins is usually April, September and October, when daytime highs sit in the pleasant 60-78°F range and the heaviest May rain is behind you.
What is the warmest month in Fort Collins?
July is the warmest month in Fort Collins, averaging highs near 86°F.
What is the coldest month in Fort Collins?
February is the coldest month in Fort Collins, with lows around 15°F. Overnight frost is likely in January, February, March, November and December.
When is the rainy season in Fort Collins?
The wettest month in Fort Collins is usually May, out of roughly 15 inches of precipitation across the year.

Fort Collins month by month