West Haven-Sylvan Weather Forecast
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Rain Showers
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Rain Showers
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Rain Showers
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Rain
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Chance Rain
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Chance Rain
Today 19 Dec West Hills and Chehalem Mountains
Rain Showers likely this Morning, then partly sunny with a chance of rain Showers with a slight chance of Thunderstorms this afternoon. Some Thunderstorms may produce heavy rainfall this afternoon. Highs in the mid 40s. Southwest wind 5 to 10 Mph. Chance of rain 70 percent. Rainfall Amounts around a tenth of an Inch, except higher Amounts possible in Thunderstorms.
Tonight 19 Dec West Hills and Chehalem Mountains
Rain Showers likely with a slight chance of Thunderstorms in the Evening, then rain Showers after midnight. Some Thunderstorms may produce heavy rainfall in the evening. Lows in the upper 30s. South wind 10 to 15 Mph. Chance of rain 90 percent. Rainfall Amounts a tenth to a quarter of an Inch, except higher Amounts possible in Thunderstorms.
West Haven-Sylvan Temperature Statistics
December Temperature
Pearson Airfield (8.7 miles)
Lowest 1 December, 2025
30.9 °FAverage December
50.6 °FHighest 10 December, 2025
62.1 °F
Climate (2020–Present)
Pearson Airfield (8.7 miles)
Average Low 2020–2025
46.5 °FAverage 2020–2025
55.4 °FAverage High 2020–2025
64.6 °F