Cottonwood Bay Weather Forecast
- 63
- 91
Increasing Clouds
- 61
- 87
Mostly Cloudy
- 59
- 86
Mostly Sunny
- 63
- 89
Sunny
- 70
- 96
Mostly Sunny
- 68
- 98
Hot
Today 19 Sep West Side Mountains north of 198
Sunny. Highs 83 to 91. North Winds up to 10 Mph.
Tonight 19 Sep West Side Mountains north of 198
Mostly clear in the evening then becoming mostly cloudy. Lows 62 to 68. West Winds up to 10 Mph.
Cottonwood Bay Temperature Statistics
September Temperature
Hollister, CA (21.1 miles)
Lowest 14 September, 2026
48.2 °FAverage September
68 °FHighest 9 September, 2026
105.8 °F
Climate (2021–2026)
Hollister, CA (21.1 miles)
Average Low 2021–2026
46.7 °FAverage 2021–2026
58 °FAverage High 2021–2026
72.8 °F