Clarkston, WA 99403 Monthly Weather

Asotin County5:09 PM PDT46.39°N, 117.06°W
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October 2026

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Mon
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175°/49°Avg 72°/47°
280°/51°Avg 71°/47°
380°/48°Avg 71°/46°
481°/51°Avg 70°/46°
583°/49°Avg 70°/46°
679°/47°Avg 69°/45°
778°/47°Avg 68°/45°
876°/45°Avg 68°/45°
978°/46°<0.01 inAvg 67°/44°
1061°/44°Avg 66°/44°
1153°/43°0.02 inAvg 66°/44°
1254°/36°<0.01 inAvg 65°/43°
1360°/32°Avg 65°/43°
1466°/37°Avg 64°/42°
1569°/39°Avg 63°/42°
1680°/41°Avg 63°/42°
1773°/44°Avg 62°/41°
1868°/46°Avg 62°/41°
1965°/45°Avg 61°/41°
2066°/40°Avg 60°/40°
2168°/44°Avg 60°/40°
22Avg 59°/40°
23 Chance Light Rain then Mostly Sunny 60°/36°Avg 59°/40°
24 Areas Of Frost then Sunny 60°/38°Avg 58°/39°
25 Mostly Sunny 65°/40°Avg 58°/39°
26 Chance Rain Showers 62°/39°Avg 57°/39°
27 Chance Rain Showers 60°/37°Avg 57°/39°
28 Partly Sunny 60°/36°Avg 56°/38°
29 Sunny 58°/40°Avg 56°/38°
30 Sunny 57°/39°Avg 55°/38°
31 Partly cloudy 59°/40°Avg 55°/38°
Average high71° (normal 66°)
Average low44° (normal 44°)
Warmest / coldest83° / 32°
Precipitation0.02 in (normal 0.66 in to date)

Observed: Lewiston Area, 4 km away, records since 1881. Normals 1991–2020. Climate data from NOAA's Regional Climate Centers (ACIS); recent days are preliminary. Days ahead: the forecast.

Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Search index and reflects what the press published. Terms of use.