Carnation climate

Carnation Weather in September

NOAA 1991-2020 normals for Snoqualmie Falls, 13.2 km from Carnation

Average highs run from 74°F on September 1 to 66°F on September 30, and lows from 51°F to 47°F. Normal precipitation for the month is 3.02 in over about 11 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 Carnation, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
70°F
Average low
49°F
Precipitation
3.02 in
Record high
91°FSep 10, 2020
Record low
40°FSep 23, 2000
Chance of a freeze
0%
Daylight
13 h 22 min to 11 h 43 min
Cloud cover
48%
Humidity
76%
Dew point
49°F
Wind
3.4 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 174°F51°F90°F 200646°F 202128%0%
Sep 274°F51°F89°F 200647°F 200829%0%
Sep 374°F51°F89°F 200350°F 200829%0%
Sep 474°F51°F87°F 201747°F 200230%0%
Sep 574°F51°F90°F 202446°F 201530%0%
Sep 673°F51°F89°F 202447°F 200231%0%
Sep 773°F50°F89°F 201250°F 200031%0%
Sep 873°F50°F87°F 199947°F 200232%0%
Sep 973°F50°F88°F 202049°F 200132%0%
Sep 1072°F50°F91°F 202049°F 200833%0%
Sep 1172°F50°F89°F 201347°F 201433%0%
Sep 1272°F50°F84°F 199948°F 201234%0%
Sep 1371°F50°F90°F 199946°F 200335%0%
Sep 1471°F49°F88°F 200049°F 201435%0%
Sep 1571°F49°F86°F 201447°F 200336%0%
Sep 1671°F49°F91°F 202546°F 202136%0%
Sep 1770°F49°F81°F 201248°F 201837%0%
Sep 1870°F49°F83°F 200946°F 201837%0%
Sep 1970°F49°F87°F 199948°F 201338%0%
Sep 2069°F48°F82°F 199946°F 200138%0%
Sep 2169°F48°F83°F 199942°F 200239%0%
Sep 2269°F48°F86°F 199944°F 200039%0%
Sep 2368°F48°F84°F 200940°F 200040%0%
Sep 2468°F48°F77°F 200641°F 200040%0%
Sep 2567°F48°F80°F 202142°F 200041%0%
Sep 2667°F47°F83°F 202243°F 201341%0%
Sep 2767°F47°F82°F 200342°F 201541%0%
Sep 2866°F47°F88°F 201744°F 199942%0%
Sep 2966°F47°F78°F 200843°F 201942%0%
Sep 3066°F47°F73°F 202040°F 201943%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Carnation, 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 (PDT).

September 1
sunrise 6:26 AM, sunset 7:48 PM
September 30
sunrise 7:06 AM, sunset 6:49 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00457773 (Snoqualmie Falls), public domain. Records: NOAA GHCN-Daily, station USW00094248, 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.