Onalaska Weather Forecast

    • 50
    • 57

    Rain

    • 36
    • 54

    Rain

    • 31
    • 49

    Chance Rain/Snow

    • 34
    • 52

    Mostly Cloudy

    • 40
    • 53

    Rain Likely

    • 38
    • 51

    Rain

    • 33
    • 48

    Rain

Today 19 Mar Foothills and Valleys of Thurston and Lewis Counties

Rain at Times in the Morning, then a chance of rain late in the morning. Rain likely in the afternoon. Rainfall Amounts a tenth to a quarter of an inch possible. Highs in the mid 50s to lower 60s. South wind to 10 Mph.

Tonight 19 Mar Foothills and Valleys of Thurston and Lewis Counties

Rain likely in the Evening, then rain in the late evening and early morning. Rain likely late in the night. Rainfall Amounts a quarter to a half inch possible. Lows in the lower 50s. South wind to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Onalaska Temperature Statistics

March Temperature

Chehalis-Centralia Airport (14.3 miles)

  • Lowest 2 March, 2026

    30.2 °F

  • Average March

    44.9 °F

  • Highest 16 March, 2026

    66.2 °F

Climate (2021–Present)

Chehalis-Centralia Airport (14.3 miles)

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  • Average Low 2021–2026

    43.6 °F

  • Average 2021–2026

    52 °F

  • Average High 2021–2026

    61.3 °F
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