Arnold Weather Forecast
- 50
- 78
Mostly Sunny
- 56
- 87
Mostly Sunny
- 51
- 86
Mostly Sunny
- 50
- 81
Mostly Sunny
- 56
- 84
Sunny
- 60
- 91
Sunny
- 59
- 93
Sunny
Today 5 Jul Northwestern Mendocino Interior
Sunny. Highs 74 to 89.
Tonight 5 Jul Northwestern Mendocino Interior
Mostly clear. Lows 48 to 58.
Arnold Temperature Statistics
July Temperature
Ukiah Municipal Airport (28.6 miles)
Lowest 3 July, 2025
59 °FAverage July
76.3 °FHighest 1 July, 2025
98.1 °F
Climate (2020–Present)
Ukiah Municipal Airport (28.6 miles)
Average Low 2020–2025
46.8 °FAverage 2020–2025
60.8 °FAverage High 2020–2025
76.4 °F