Lystair Lake Weather Forecast
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Rain
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Rain
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Rain
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Chance Rain
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Chance Rain
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Chance Rain
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Chance Rain
Today 20 Dec Middle Chehalis River Valley
A chance of rain in the Morning, then rain late in the morning. Rain Showers and a slight chance of Thunderstorms in the afternoon. Rainfall Amounts a half inch to one inch Possible, except higher Amounts possible in Thunderstorms. Highs in the mid to upper 40s. South wind 10 to 15 Mph becoming southwest in the afternoon. Gusts to 30 Mph.
Tonight 20 Dec Middle Chehalis River Valley
Showers and a slight chance of Thunderstorms in the Evening, then rain in the late evening and early morning. Rain likely late in the night. Rainfall Amounts a half inch to one inch Possible, except higher Amounts possible in Thunderstorms. Lows near 40. South wind around 10 Mph with Gusts to 20 Mph.
Lystair Lake Temperature Statistics
December Temperature
Shelton, Shelton Sanderson Field (10.6 miles)
Lowest 1 December, 2025
28.9 °FAverage December
46.8 °FHighest 15 December, 2025
57.9 °F
Climate (2020–Present)
Shelton, Shelton Sanderson Field (10.6 miles)
Average Low 2020–2025
41.8 °FAverage 2020–2025
51.2 °FAverage High 2020–2025
61.3 °F