Saint John Mountain Weather Forecast
- 55
- 66
Becoming Sunny
- 57
- 68
Mostly Sunny
- 60
- 71
Mostly Sunny
- 61
- 74
Mostly Sunny
- 58
- 72
Mostly Sunny
- 59
- 70
Mostly Sunny
- 59
- 71
Sunny
Today 26 Jul Mountains Southwestern Shasta County to Western Colusa County
Mostly sunny. A slight chance of Showers and Thunderstorms in the afternoon. Highs 67 to 82 higher Elevations. 82 to 88 lower Elevations. Light Winds becoming southeast up to 10 Mph in the afternoon.
Tonight 26 Jul Mountains Southwestern Shasta County to Western Colusa County
Clear. A slight chance of Showers and Thunderstorms early in the evening. Lows 54 to 66. Prevailing southwest Winds up to 10 Mph in the evening becoming light.
Saint John Mountain Temperature Statistics
July Temperature
Ukiah Municipal Airport (34.2 miles)
Lowest 5 July, 2025
48.7 °FAverage July
74.5 °FHighest 11 July, 2025
105.7 °F
Climate (2020–Present)
Ukiah Municipal Airport (34.2 miles)
Average Low 2020–2025
46.8 °FAverage 2020–2025
60.8 °FAverage High 2020–2025
76.3 °F