Fort Collins, CO Weather
Fort Collins hourly forecast: next 24 hours
Today's high of 64°F (18°C) is about 21°F (12°C) below the typical August high of 85°F (30°C).
Current conditions in detail
Fort Collins weather tomorrow (Tuesday, August 18)
Tomorrow in Fort Collins looks patchy rain nearby, with a high of 53° and an overnight low of 48°. There is a 87% chance of rain - plan accordingly. Winds top out near 43 mph, and the UV index reaches 8 (very high).
Fort Collins 14-day forecast
About the weather in Fort Collins
Fort Collins has a semi-arid climate, marked by big day-to-night temperature swings and modest rainfall. Average daytime highs range from about 38°F (4°C) in January to around 87°F (31°C) in July, and the city records roughly 74 days of measurable precipitation a year.
Fort Collins weather: quick facts
- Hottest month: July - highs near 87°F (31°C)
- Coldest month: January - highs near 38°F (4°C)
- Record high: 100°F (38°C) · Record low: -28°F (-33°C) (2015–2024)
- Wettest month: May (13 rainy days) · Sunniest: July (12.9 h sun/day)
- Climate type: semi-arid - big day-to-night temperature swings and modest rainfall
- Snow: about 23 days a year
Temperatures through the year
The warmest stretch of the year centers on July. Highs average 87°F (31°C) and overnight lows stay near 61°F (16°C). The coolest month is January, with typical highs of 38°F (4°C) and lows around 16°F (-9°C). Based on 2015–2024 weather data, temperatures have reached as high as 100°F (38°C) and dropped as low as -28°F (-33°C).
Rain, sun and snow
May is usually the wettest month. It brings about 4.1 inches (105 mm) of rain over 13 days, while January is the driest. July brings the most sunshine, averaging 12.9 hours of sun a day. Snow falls on about 23 days in a typical year, mostly from October through May.
Season by season
Spring (March through May)
Spring in Fort Collins is mild, with daytime highs averaging 59°F (15°C) and nights around 34°F (1°C); expect showers on roughly 28 days across the season, plus around 8 snowy days.
Summer (June through August)
Summer in Fort Collins runs hot, with daytime highs averaging 84°F (29°C) and nights around 58°F (15°C); expect showers on roughly 20 days across the season.
Fall (September through November)
Fall in Fort Collins stays on the cool side of mild, with daytime highs averaging 65°F (18°C) and nights around 40°F (4°C); rain falls on about 14 days over the three months, plus around 5 snowy days.
Winter (December through February)
Winter in Fort Collins is chilly, with daytime highs averaging 40°F (4°C) and nights around 18°F (-8°C); rain falls on about 13 days over the three months, plus around 10 snowy days.
Average temperatures in Fort Collins by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 38° | 16° | 4 | 0.6 in | 7.9 h/day | 63% |
| February | 41° | 17° | 5 | 0.9 in | 8.9 h/day | 59% |
| March | 51° | 25° | 6 | 1.6 in | 9.8 h/day | 58% |
| April | 60° | 33° | 8 | 1.9 in | 10.6 h/day | 52% |
| May | 67° | 43° | 13 | 4.1 in | 11.1 h/day | 62% |
| June | 81° | 55° | 8 | 1.8 in | 12.8 h/day | 54% |
| July | 87° | 61° | 6 | 1.3 in | 12.9 h/day | 51% |
| August | 85° | 59° | 6 | 1.0 in | 12.2 h/day | 51% |
| September | 80° | 53° | 4 | 0.7 in | 11.0 h/day | 47% |
| October | 64° | 39° | 5 | 0.9 in | 9.4 h/day | 53% |
| November | 50° | 28° | 5 | 0.8 in | 8.5 h/day | 59% |
| December | 40° | 20° | 4 | 0.6 in | 7.6 h/day | 59% |