Cowlitz County, WA Weather Tomorrow

Find tomorrow's weather forecast for Cowlitz County with an accurate 5 day outlook showing precipitation chances, day and night conditions, high and low temperatures in Fahrenheit and Celsius, sunrise, sunset, sky conditions, wind chill, and wind speed with direction for the Cowlitz County area.
Updated: Wed Sep 2nd 2026 11:15 PM PDT
Cowlitz County, WA Weather – 9-2 – Heavy Rain
64° / 56°
Heavy Rain
Cowlitz County, WA Weather – 9-3 – Light Rain Shower
56° / 49°

Weather Tomorrow

Light Rain Shower
Rain is in the forecast for Cowlitz County, with a high of 56°F and a low of 49°F. The chance of rain is 94% with an estimated 2.03in. Winds will be light at 8mph and gusts of 23.5mph at 9 AM. High humidity with average of 94% is anticipated, the maximum being 99% at 5 AM and 84% being its lowest at 1 AM. Barometric pressure is its highest of 29.85inHg at 9 PM, a lowest point of 29.79inHg at 12 AM with an avg 29.82inHg.
Cowlitz County, WA Weather – 9-4 – Scattered Showers
67° / 49°
Scattered Showers
Passing showers are in the forecast for Cowlitz County, with a high of 67°F and a low of 49°F. Rainfall predicted to have a 68% chance with an estimated 0.04in. Winds will be light at 6mph and gusts of 15.9mph at 2 PM. High humidity with average of 82% is anticipated, the maximum being 98% at 2 AM and 48% being its lowest at 4 PM. Barometric pressure is its highest of 30.01inHg at 10 PM, a lowest point of 29.85inHg at 12 AM with an avg 29.93inHg.
Cowlitz County, WA Weather – 9-5 – Sunny
74° / 46°
Sunny
In Cowlitz County, it will be sunny with highs near 74°F and lows around 46°F. There might be light rainfall having a 12% chance. Winds will be light at 6mph and gusts of 13mph at 9 PM. The humidity will be on the higher side, averaging about 72%, the maximum being 98% at 7 AM and 33% being its lowest at 5 PM. Barometric pressure is its highest of 30.06inHg at 7 AM, a lowest point of 29.95inHg at 5 PM with an avg 30.01inHg.
Cowlitz County, WA Weather – 9-6 – Overcast
75° / 49°
Overcast
It will be overcast in Cowlitz County, with a high of 75°F and a low of 49°F. There might be light rainfall having a 11% chance. Winds will be light at 6mph and gusts of 11.2mph at 8 PM. The humidity will be on the higher side, averaging about 65%, the maximum being 93% at 2 AM and 34% being its lowest at 5 PM. Barometric pressure is its highest of 30.01inHg at 1 AM, a lowest point of 29.91inHg at 6 PM with an avg 29.98inHg.
Cowlitz County, WA Weather – 9-7 – Sunny
77° / 49°
Sunny
Bright and sunny conditions in Cowlitz County, with a high of 77°F and a low of 49°F. There's a very small chance of rainfall, only about 8%. Winds will be light at 8mph and gusts of 16.3mph at 5 PM. The humidity will be on the higher side, averaging about 70%, the maximum being 96% at 7 AM and 34% being its lowest at 2 PM. Barometric pressure is its highest of 30.06inHg at 8 AM, a lowest point of 29.97inHg at 5 PM with an avg 30.01inHg.

Currently

Heavy Rain 56°F
29.79 inHg.
Barometer
82%
Humidity
SSE 7.9 mph
Wind
Heavy Rain

5 Day Forecast Nearby

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