Rainbow Falls State Park Weather Forecast
- 40
- 67
Partly Sunny
- 43
- 76
Mostly Sunny
- 48
- 71
Slight Chance Rain Showers
- 44
- 67
Slight Chance Rain Showers
- 49
- 75
Partly Sunny
- 50
- 84
Chance Rain Showers
Today 23 May Willapa and Black Hills
Mostly sunny. Highs in the upper 50s to mid 60s. West wind to 10 Mph.
Tonight 23 May Willapa and Black Hills
Partly cloudy. Lows near 40. West wind to 10 Mph in the evening becoming light.
Rainbow Falls State Park Temperature Statistics
May Temperature
Chehalis-Centralia Airport (11.8 miles)
Lowest 5 May, 2025
35.6 °FAverage May
53.9 °FHighest 6 May, 2025
80.6 °F
Climate (2020–Present)
Chehalis-Centralia Airport (11.8 miles)
Average Low 2020–2025
43.7 °FAverage 2020–2025
52 °FAverage High 2020–2025
61.4 °F