Oregon climate

Oregon Weather in September

NOAA 1991-2020 normals for Oregon, 0.7 km from Oregon

Average highs run from 83°F on September 1 to 73°F on September 30, and lows from 61°F to 50°F.

September day by day

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

Normal daily high and low temperature at Oregon, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
78°F
Average low
56°F
Record high
103°FSep 28, 1953
Record low
30°FSep 28, 1967
Chance of a freeze
7%
Days of 90°F or more
3.2
Daylight
13 h 03 min to 11 h 48 min
Cloud cover
46%
Humidity
68%
Dew point
55°F
Wind
9.6 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 183°F61°F99°F 202641°F 19670%
Sep 283°F61°F99°F 200045°F 19810%
Sep 382°F60°F99°F 200038°F 19740%
Sep 482°F60°F97°F 202634°F 19740%
Sep 582°F60°F100°F 202635°F 19740%
Sep 682°F59°F99°F 202642°F 20170%
Sep 781°F59°F98°F 201343°F 20170%
Sep 881°F59°F100°F 202645°F 20080%
Sep 981°F58°F97°F 201342°F 20080%
Sep 1080°F58°F97°F 201335°F 19760%
Sep 1180°F58°F102°F 200041°F 19680%
Sep 1280°F57°F95°F 202538°F 20140%
Sep 1379°F57°F95°F 202537°F 20140%
Sep 1479°F56°F96°F 202635°F 19740%
Sep 1579°F56°F92°F 194837°F 20070%
Sep 1679°F56°F95°F 197838°F 19990%
Sep 1778°F55°F102°F 195338°F 19800%
Sep 1878°F55°F97°F 201836°F 19810%
Sep 1977°F54°F95°F 194837°F 19710%
Sep 2077°F54°F97°F 202233°F 19710%
Sep 2177°F54°F94°F 198031°F 19990%
Sep 2276°F53°F93°F 201731°F 19740%
Sep 2376°F53°F92°F 201731°F 20120%
Sep 2476°F52°F92°F 201732°F 19750%
Sep 2575°F52°F92°F 197234°F 19750%
Sep 2675°F52°F94°F 202134°F 19750%
Sep 2775°F51°F95°F 202135°F 19750%
Sep 2874°F51°F103°F 195330°F 19670%
Sep 2974°F50°F94°F 200231°F 19670%
Sep 3073°F50°F94°F 202332°F 19720%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Oregon, 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 (CDT).

September 1
sunrise 6:49 AM, sunset 7:52 PM
September 30
sunrise 7:16 AM, sunset 7:04 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00236357 (Oregon), public domain. Records: NOAA GHCN-Daily, station USW00013993, 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.