Chewelah climate

Chewelah Weather in September

NOAA 1991-2020 normals for Chewelah, 1.9 km from Chewelah

Average highs run from 81°F on September 1 to 70°F on September 30, and lows from 43°F to 35°F. Normal precipitation for the month is 0.95 in.

September day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Chewelah, in °F, with the record for each date.020406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
76°F
Average low
39°F
Precipitation
0.95 in
Record high
104°FSep 2, 2025
Record low
20°FSep 28, 1900
Chance of a freeze
91%
Days of 90°F or more
3.0
Daylight
13 h 23 min to 11 h 43 min
Cloud cover
49%
Humidity
54%
Dew point
38°F
Wind
3.8 mph

Every day of the month

A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.

DateNormal highNormal lowRecord highRecord lowChance wetChance of snow
Sep 181°F43°F99°F 195032°F 19140%
Sep 281°F43°F104°F 202533°F 19000%
Sep 381°F42°F102°F 200332°F 19290%
Sep 480°F42°F98°F 200329°F 19030%
Sep 580°F42°F97°F 199830°F 19020%
Sep 680°F42°F98°F 199830°F 19290%
Sep 779°F41°F95°F 201130°F 19290%
Sep 879°F41°F98°F 201132°F 19220%
Sep 979°F41°F98°F 201129°F 19020%
Sep 1078°F41°F99°F 201128°F 19040%
Sep 1178°F40°F99°F 201129°F 19060%
Sep 1278°F40°F97°F 200228°F 19000%
Sep 1377°F40°F98°F 201325°F 19040%
Sep 1477°F40°F97°F 200128°F 19020%
Sep 1577°F39°F97°F 200125°F 19030%
Sep 1676°F39°F94°F 200126°F 19360%
Sep 1776°F39°F92°F 200824°F 19020%
Sep 1875°F38°F92°F 199427°F 19090%
Sep 1975°F38°F91°F 191729°F 19430%
Sep 2075°F38°F91°F 201224°F 19340%
Sep 2174°F38°F94°F 201426°F 19020%
Sep 2274°F37°F90°F 199927°F 19460%
Sep 2373°F37°F94°F 200123°F 20000%
Sep 2473°F37°F95°F 201121°F 19260%
Sep 2572°F37°F91°F 195222°F 19260%
Sep 2672°F36°F89°F 195223°F 19080%
Sep 2771°F36°F93°F 200327°F 19450%
Sep 2871°F36°F90°F 191820°F 19000%
Sep 2970°F35°F84°F 199321°F 19190%
Sep 3070°F35°F85°F 199824°F 19030%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Chewelah, in percent, and of at least 0.1 inch of snowfall.00.21102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (PDT).

September 1
sunrise 6:09 AM, sunset 7:32 PM
September 30
sunrise 6:49 AM, sunset 6:32 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00451395 (Chewelah), public domain. Records: NOAA GHCN-Daily, station USC00451630, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.