Sibley Lake Weather Forecast
- 41
- 60
Chance Thunderstorms
- 39
- 57
Rain Showers Likely
- 42
- 63
Chance Thunderstorms
- 43
- 67
Rain Showers Likely
- 40
- 62
Rain Showers Likely
- 41
- 61
Chance Thunderstorms
Today 14 Aug Northeast Bighorn Mountains
Partly sunny. Patchy fog early in the morning. Slight chance of Thunderstorms in the morning. Chance of rain Showers through the day. Chance of Thunderstorms in the afternoon. Highs around 60. West Winds 5 to 15 Mph. Chance of precipitation 50 percent.
Tonight 14 Aug Northeast Bighorn Mountains
Mostly cloudy. Chance of Thunderstorms early in the evening. Chance of rain Showers through the night. Slight chance of Thunderstorms late in the evening. Patchy fog late in the evening. Lows around 40. Northwest Winds 5 to 10 Mph in the evening shifting to the southwest overnight. Chance of precipitation 50 percent.
Sibley Lake Temperature Statistics
August Temperature
Sheridan County Airport (22.4 miles)
Lowest 4 August, 2026
40.6 °FAverage August
70.8 °FHighest 1 August, 2026
104.6 °F
Climate (2021–2026)
Sheridan County Airport (22.4 miles)
Average Low 2021–2026
33.4 °FAverage 2021–2026
47.6 °FAverage High 2021–2026
62.2 °F