Redmond climate

Redmond Weather in September

NOAA 1991-2020 normals for Richfield Radio Ksvc, 33 km from Redmond

Average highs run from 86°F on September 1 to 75°F on September 30, and lows from 48°F to 37°F. Normal precipitation for the month is 0.79 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 Redmond, in °F, with the record for each date.020406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
81°F
Average low
43°F
Precipitation
0.79 in
Record high
103°FSep 2, 2024
Record low
12°FSep 29, 1898
Chance of a freeze
73%
Days of 90°F or more
2.0
Daylight
13 h 02 min to 11 h 48 min
Cloud cover
37%
Humidity
38%
Dew point
33°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 186°F48°F99°F 202030°F 190020%0%
Sep 285°F48°F103°F 202423°F 190820%0%
Sep 385°F48°F98°F 190827°F 196420%0%
Sep 485°F47°F98°F 202225°F 190019%0%
Sep 584°F47°F98°F 202225°F 190019%0%
Sep 684°F47°F98°F 194430°F 190019%0%
Sep 784°F46°F100°F 202228°F 190019%0%
Sep 884°F46°F100°F 202228°F 189819%0%
Sep 983°F45°F96°F 202225°F 190019%0%
Sep 1083°F45°F95°F 195925°F 190019%0%
Sep 1183°F45°F97°F 190716°F 189819%0%
Sep 1282°F44°F94°F 190726°F 195118%0%
Sep 1382°F44°F95°F 199025°F 189818%0%
Sep 1482°F44°F95°F 194826°F 189818%0%
Sep 1581°F43°F93°F 200024°F 190018%0%
Sep 1681°F43°F92°F 200020°F 189818%0%
Sep 1780°F42°F94°F 202523°F 189818%0%
Sep 1880°F42°F93°F 193519°F 196517%0%
Sep 1980°F42°F95°F 193721°F 198817%0%
Sep 2079°F41°F94°F 192022°F 189817%0%
Sep 2179°F41°F91°F 191522°F 190017%0%
Sep 2278°F41°F91°F 194321°F 190017%0%
Sep 2378°F40°F97°F 192021°F 190117%0%
Sep 2478°F40°F90°F 191522°F 189817%0%
Sep 2577°F39°F93°F 194721°F 189817%0%
Sep 2677°F39°F90°F 196016°F 190817%0%
Sep 2776°F39°F90°F 194214°F 190817%0%
Sep 2876°F38°F90°F 194715°F 189817%0%
Sep 2975°F38°F92°F 202412°F 189817%0%
Sep 3075°F37°F91°F 196314°F 189817%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Redmond, in percent, and of at least 0.1 inch of snowfall.051015201102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (MDT).

September 1
sunrise 6:56 AM, sunset 7:58 PM
September 30
sunrise 7:23 AM, sunset 7:11 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00427260 (Richfield Radio Ksvc), public domain. Records: NOAA GHCN-Daily, station USC00427260, 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.