Shumway Weather Forecast
- 38
- 67
Slight Chance Thunderstorms
- 42
- 72
Mostly Sunny
- 45
- 77
Mostly Sunny
- 47
- 78
Partly Sunny
- 48
- 81
Mostly Sunny
- 46
- 81
Mostly Sunny
Today 17 Sep Lassen-Eastern Plumas-Eastern Sierra Counties
Sunny in the Morning, then partly cloudy with a slight chance of Showers and Thunderstorms in the afternoon. Highs 64 to 74. Light Winds becoming west 10 to 15 Mph in the afternoon.
Tonight 17 Sep Lassen-Eastern Plumas-Eastern Sierra Counties
Clear. Lows 34 to 44. West Winds around 10 Mph in the evening becoming light.
Shumway Temperature Statistics
September Temperature
Alturas (54.1 miles)
Lowest 14 September, 2026
32 °FAverage September
60.9 °FHighest 10 September, 2026
85.6 °F
Climate (2021–2026)
Alturas (54.1 miles)
Average Low 2021–2026
33.2 °FAverage 2021–2026
49.1 °FAverage High 2021–2026
64.6 °F