Chehalis Weather Forecast
- 28
- 50
Rain Likely
- 31
- 54
Partly Sunny
- 38
- 58
Rain
- 37
- 50
Rain
- 35
- 52
Rain
- 35
- 57
Partly Sunny
Today 29 Mar Lowlands of Lewis and Southern Thurston Counties
Mostly cloudy. A slight chance of rain in the Morning, then a chance of rain in the late morning and early afternoon. Rain likely late in the afternoon. Rainfall Amounts less than a tenth of an inch likely. Highs near 50. Light wind becoming west to 10 Mph with Gusts to 20 Mph in the afternoon.
Tonight 29 Mar Lowlands of Lewis and Southern Thurston Counties
Mostly cloudy with a chance of rain in the Evening, then mostly clear after midnight. Lows in the upper 20s. West wind to 10 Mph with Gusts to 20 Mph in the evening becoming light.
Chehalis Temperature Statistics
March Temperature
Chehalis-Centralia Airport (1.2 miles)
Lowest 2 March, 2026
30.2 °FAverage March
45.8 °FHighest 16 March, 2026
66.2 °F
Climate (2021–Present)
Chehalis-Centralia Airport (1.2 miles)
Average Low 2021–2026
43.6 °FAverage 2021–2026
52 °FAverage High 2021–2026
61.3 °F