Fairchild Air Force Base climate

Fairchild Air Force Base Weather in September

NOAA 1991-2020 normals for Spokane WFO, 7.1 km from Fairchild Air Force Base

Average highs run from 79°F on September 1 to 66°F on September 30, and lows from 47°F to 38°F. Normal precipitation for the month is 0.61 in over about 5 wet days.

September day by day

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

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

September at a glance

Average high
73°F
Average low
43°F
Precipitation
0.61 in
Snowfall
0.1 in
Record high
100°FSep 2, 2025
Record low
19°FSep 23, 2000
Chance of a freeze
67%
Days of 90°F or more
1.5
Daylight
13 h 22 min to 11 h 43 min
Cloud cover
48%
Humidity
54%
Dew point
41°F
Wind
6.9 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 179°F47°F99°F 202534°F 200814%0%
Sep 279°F47°F100°F 202538°F 199914%0%
Sep 378°F47°F99°F 202537°F 200415%0%
Sep 478°F46°F93°F 200332°F 201515%0%
Sep 578°F46°F93°F 199835°F 200515%0%
Sep 677°F46°F94°F 199834°F 201015%0%
Sep 777°F46°F95°F 202431°F 199915%0%
Sep 877°F45°F91°F 201131°F 202016%0%
Sep 976°F45°F92°F 201131°F 202016%0%
Sep 1076°F45°F92°F 201138°F 199816%0%
Sep 1176°F44°F93°F 201129°F 201216%0%
Sep 1275°F44°F91°F 200228°F 201417%0%
Sep 1375°F44°F91°F 201329°F 201617%0%
Sep 1474°F43°F91°F 200231°F 201617%0%
Sep 1574°F43°F92°F 199833°F 200618%0%
Sep 1674°F43°F92°F 200932°F 200618%0%
Sep 1773°F43°F88°F 200829°F 199618%0%
Sep 1873°F42°F86°F 200830°F 201819%0%
Sep 1972°F42°F87°F 200833°F 201819%0%
Sep 2072°F42°F85°F 201231°F 200719%0%
Sep 2171°F41°F87°F 199929°F 199620%0%
Sep 2271°F41°F86°F 199926°F 199620%0%
Sep 2370°F41°F89°F 200919°F 200020%0%
Sep 2470°F40°F89°F 201127°F 200021%0%
Sep 2569°F40°F86°F 199729°F 199621%1%
Sep 2669°F40°F83°F 200329°F 199921%1%
Sep 2768°F39°F88°F 202225°F 199922%1%
Sep 2868°F39°F84°F 202424°F 199922%1%
Sep 2967°F39°F81°F 200631°F 200722%1%
Sep 3066°F38°F79°F 200826°F 202423%1%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Fairchild Air Force Base, in percent, and of at least 0.1 inch of snowfall.05101520251102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (PDT).

September 1
sunrise 6:09 AM, sunset 7:31 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 USC00457941 (Spokane WFO), public domain. Records: NOAA GHCN-Daily, station USC00457941, 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.