Fort Collins weather by month

Frost and snow-likely months in Fort Collins

Nights in Fort Collins average 36°F (2°C) or below in 5 months (January, February, March, November and December). March and November combine average lows at or below 32°F (0°C) with 0.4 in (10 mm) or more of monthly precipitation, so precipitation then is likely to fall as snow. The coldest month is January with an average low of 20°F (-7°C) and a record low of -4°F (-20°C).

• January: average low 20°F (-7°C), record low -4°F (-20°C), 0.3 in (7 mm) of precipitation
• February: average low 21°F (-6°C), record low -13°F (-25°C), 0.3 in (7 mm) of precipitation
• March: average low 29°F (-2°C), record low -1°F (-18°C), 0.9 in (22 mm) of precipitation — snow-likely
• November: average low 31°F (-1°C), record low 10°F (-12°C), 0.6 in (14 mm) of precipitation — snow-likely
• December: average low 25°F (-4°C), record low -6°F (-21°C), 0.3 in (7 mm) of precipitation

These records carry temperature and precipitation, not snowfall totals.

Best time to visit Fort Collins

The most comfortable time to visit Fort Collins is generally June and September to October, balancing mild daytime temperatures against the driest stretch of the year. The city has strongly marked seasons and rain concentrates around May, totalling about 14.8 in (375 mm) a year.

Travellers who prefer heat should aim for July, when highs average 88°F (31°C). May is the month to avoid if rain would spoil your plans — it averages 4.7 in (119 mm), roughly 18× the rainfall of the driest month (February).