Chehalis Weather Forecast
- 43
- 72
Mostly Cloudy
- 49
- 75
Rain Likely
- 44
- 60
Rain
- 44
- 64
Chance Rain
- 45
- 69
Mostly Cloudy
- 47
- 69
Mostly Cloudy
Today 23 May Lowlands of Lewis and Southern Thurston Counties
Mostly cloudy in the morning then becoming mostly sunny. Patchy fog in the morning. Highs in the lower to mid 70s. Light wind becoming west to 10 Mph with Gusts to 20 Mph in the afternoon.
Tonight 23 May Lowlands of Lewis and Southern Thurston Counties
Partly cloudy. Lows in the lower to mid 40s. West wind to 10 Mph with Gusts to 20 Mph in the evening becoming light.
Chehalis Temperature Statistics
May Temperature
Chehalis-Centralia Airport (1.2 miles)
Lowest 17 May, 2026
35.6 °FAverage May
57.1 °FHighest 3 May, 2026
84.2 °F
Climate (2021–Present)
Chehalis-Centralia Airport (1.2 miles)
Average Low 2021–2026
43.8 °FAverage 2021–2026
52.1 °FAverage High 2021–2026
61.4 °F