Montesano Weather Forecast
- 45
- 54
Rain
- 45
- 52
Rain
- 47
- 53
Rain
- 47
- 56
Rain
- 46
- 53
Rain
- 45
- 53
Rain
- 45
- 52
Rain
Today 5 Dec Lower Chehalis River Valley
Rain in the Morning, then rain likely early in the afternoon. A chance of rain late in the afternoon. Rainfall Amounts a quarter to a half inch possible. Highs in the lower to mid 50s. Southwest wind 10 to 15 Mph becoming west with Gusts to 30 Mph in the afternoon.
Tonight 5 Dec Lower Chehalis River Valley
Rain likely in the Evening, then Showers and a slight chance of Thunderstorms in the late evening and early morning. A chance of rain late in the night. Rainfall Amounts a tenth to a quarter of an inch Possible, except higher Amounts possible in Thunderstorms. Lows in the 40s. West wind 10 to 20 Mph with Gusts to 35 Mph.
Montesano Temperature Statistics
December Temperature
Hoquiam, Bowerman Airport (14.9 miles)
Lowest 1 December, 2025
35.1 °FAverage December
44.8 °FHighest 1 December, 2025
48.9 °F
Climate (2020–Present)
Hoquiam, Bowerman Airport (14.9 miles)
Average Low 2020–2025
46.2 °FAverage 2020–2025
52.1 °FAverage High 2020–2025
58.4 °F