Thurston climate

Thurston Weather in September

NOAA 1991-2020 normals for Lancaster Fairfield AP, 13.4 km from Thurston

Average highs run from 82°F on September 1 to 73°F on September 30, and lows from 57°F to 47°F. Normal precipitation for the month is 3.21 in over about 13 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 Thurston, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
78°F
Average low
52°F
Precipitation
3.21 in
Record high
96°FSep 8, 2002
Record low
30°FSep 22, 1999
Chance of a freeze
8%
Days of 90°F or more
2.2
Daylight
13 h 03 min to 11 h 48 min
Cloud cover
52%
Humidity
69%
Dew point
54°F
Wind
5.4 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 182°F57°F92°F 201042°F 200945%0%
Sep 282°F56°F94°F 201043°F 200945%0%
Sep 381°F56°F95°F 201142°F 199745%0%
Sep 481°F56°F93°F 200837°F 199745%0%
Sep 581°F55°F94°F 200741°F 199745%0%
Sep 681°F55°F94°F 199844°F 201345%0%
Sep 780°F55°F95°F 200239°F 202544%0%
Sep 880°F55°F96°F 200239°F 202444%0%
Sep 980°F54°F95°F 200239°F 202544%0%
Sep 1080°F54°F94°F 200239°F 199844%0%
Sep 1179°F54°F91°F 201939°F 199944%0%
Sep 1279°F53°F93°F 201942°F 200244%0%
Sep 1379°F53°F94°F 201942°F 200243%0%
Sep 1478°F53°F95°F 199840°F 201343%0%
Sep 1578°F52°F89°F 202436°F 199943%0%
Sep 1678°F52°F89°F 202635°F 200743%0%
Sep 1777°F52°F88°F 202136°F 199943%0%
Sep 1877°F51°F91°F 202136°F 199943%0%
Sep 1977°F51°F89°F 202136°F 201242%0%
Sep 2076°F51°F92°F 202435°F 202042%0%
Sep 2176°F50°F94°F 202434°F 199942%0%
Sep 2276°F50°F95°F 202430°F 199942%0%
Sep 2375°F50°F92°F 201034°F 201242%0%
Sep 2475°F49°F92°F 200731°F 201242%0%
Sep 2575°F49°F92°F 200735°F 199642%0%
Sep 2674°F48°F90°F 201739°F 200341%0%
Sep 2774°F48°F91°F 201737°F 200041%0%
Sep 2873°F48°F90°F 201936°F 200141%0%
Sep 2973°F47°F87°F 202533°F 200041%0%
Sep 3073°F47°F91°F 201934°F 200141%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Thurston, in percent, and of at least 0.1 inch of snowfall.010203040501102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (EDT).

September 1
sunrise 6:58 AM, sunset 8:01 PM
September 30
sunrise 7:26 AM, sunset 7:14 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00053844 (Lancaster Fairfield AP), public domain. Records: NOAA GHCN-Daily, station USW00053844, 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.