Summer Lake Weather Forecast
- 56
- 78
Rain Showers
- 52
- 65
Rain Showers
- 53
- 75
Slight Chance Thunderstorms
- 55
- 81
Partly Sunny
- 57
- 83
Mostly Cloudy
- 52
- 79
Mostly Cloudy
Today 23 Sep North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County
Mostly cloudy. Slight chance of Showers in the Morning, then a chance of Showers and slight chance of Thunderstorms in the afternoon. Highs in the mid 70s to lower 80s. Chance of rain 40 percent.
Tonight 23 Sep North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County
Slight chance of Thunderstorms in the evening. Mostly cloudy with a chance of Showers. Lows in the 50s. Chance of rain 30 percent.
Summer Lake Temperature Statistics
September Temperature
Buckley Air Force Base Airport (5 miles)
Lowest 16 September, 2026
50 °FAverage September
71.9 °FHighest 13 September, 2026
94.3 °F
Climate (2021–2026)
Buckley Air Force Base Airport (5 miles)
Average Low 2021–2026
40.2 °FAverage 2021–2026
52.6 °FAverage High 2021–2026
66.1 °F