Penngrove Weather Forecast
- 34
- 57
Mostly Cloudy
- 36
- 58
Partly Sunny
- 37
- 58
Partly Sunny
- 40
- 61
Mostly Sunny
- 43
- 62
Mostly Sunny
- 43
- 64
Mostly Sunny
- 43
- 64
Partly Sunny
Today 10 Jan North Bay Interior Valleys
Mostly cloudy. Highs in the 50s. East Winds 5 to 10 Mph.
Tonight 10 Jan North Bay Interior Valleys
Mostly cloudy. Areas of frost after midnight. Lows in the 30s to lower 40s. Northeast Winds 5 to 10 Mph.
Penngrove Temperature Statistics
January Temperature
Petaluma Municipal Airport (4.3 miles)
Lowest 8 January, 2026
37.4 °FAverage January
50.6 °FHighest 3 January, 2026
60.8 °F
Climate (2021–Present)
Petaluma Municipal Airport (4.3 miles)
Average Low 2021–2026
44.6 °FAverage 2021–2026
55.1 °FAverage High 2021–2026
68.6 °F