Big Timber Weather Forecast
- 65
- 79
Chance Thunderstorms
- 60
- 78
Mostly Cloudy
- 59
- 78
Mostly Sunny
- 62
- 78
Chance Rain Showers
- 59
- 79
Chance Rain Showers
- 58
- 77
Partly Sunny
Today 18 Aug Northern Will
Mostly cloudy. A slight chance of Showers early in the afternoon. A chance of Showers and Thunderstorms late. Highs in the upper 70s. Southwest Winds 5 to 10 Mph. Chance of precipitation 50 percent.
Tonight 18 Aug Northern Will
Mostly cloudy. A chance of Showers and Thunderstorms until early Morning, then a slight chance of Showers late. Humid with Lows in the mid 60s. Southwest Winds 5 to 10 Mph, becoming west after midnight. Chance of precipitation 50 percent.
Big Timber Temperature Statistics
August Temperature
Joliet Regional Airport (1.2 miles)
Lowest 3 August, 2026
60.6 °FAverage August
75.2 °FHighest 10 August, 2026
89.4 °F
Climate (2021–2026)
Joliet Regional Airport (1.2 miles)
Average Low 2021–2026
43.6 °FAverage 2021–2026
53.8 °FAverage High 2021–2026
63.4 °F