Roosevelt National Forest Weather Forecast
- 53
- 65
Rain Showers Likely
- 49
- 68
Rain Showers Likely
- 45
- 65
Rain Showers
- 43
- 60
Chance Thunderstorms
- 46
- 64
Slight Chance Thunderstorms
- 46
- 66
Chance Thunderstorms
- 48
- 67
Chance Thunderstorms
Today 17 Sep Larimer and Boulder Counties Between 6000 and 9000 Feet
Partly cloudy with a chance of rain Showers and slight chance of Thunderstorms. Highs 67 to 77. Chance of rain 30 percent.
Tonight 17 Sep Larimer and Boulder Counties Between 6000 and 9000 Feet
Mostly cloudy. Slight chance of Thunderstorms early in the Evening, then a slight chance of Showers during the late evening hours. Lows 49 to 59. Chance of rain 20 percent.
Roosevelt National Forest Temperature Statistics
September Temperature
Fort Collins/Loveland - Northern Colorado Regional Airport (28 miles)
Lowest 10 September, 2026
53.1 °FAverage September
72.8 °FHighest 5 September, 2026
97 °F
Climate (2021–2026)
Fort Collins/Loveland - Northern Colorado Regional Airport (28 miles)
Average Low 2021–2026
38.6 °FAverage 2021–2026
51.9 °FAverage High 2021–2026
66.2 °F