Chehalis, WA 98532 Monthly Weather

Lewis County11:18 AM PDT46.64°N, 122.97°W
← September

October 2026

Sun
Mon
Tue
Wed
Thu
Fri
Sat
167°/50°
266°/51°
366°/51°
472°/53°
569°/51°
661°/48°
761°/46°
869°/47°
952°/40°
1051°/38°
1153°/37°
1256°/38°
1359°/45°
1460°/49°
1569°/54°
1670°/53°
1757°/40°
1851°/38°
19
20
21
22
23 Sunny 61°/32°
24 Partly Sunny then Slight Chance Light Rain 59°/36°
25 Chance Light Rain 59°/37°
26 Chance Light Rain 61°/37°
27 Partly Sunny 60°/36°
28 Slight Chance Light Rain 60°/35°
29 Partly Sunny 59°/–
30 Mostly clear 60°/38°
31 Mostly sunny 60°/37°
Average high62°
Average low46°
Warmest / coldest72° / 37°

Observed: Abernathy Mountain Washington, 34 km away, records since 1995. 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 4Conservative index and reflects what the press published. Terms of use.