Garfield County climate

Garfield County Weather in September

NOAA 1991-2020 normals for Pomeroy, 5.1 km from Garfield County

Average highs run from 81°F on September 1 to 69°F on September 30, and lows from 49°F to 41°F. Normal precipitation for the month is 0.58 in over about 4 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 Garfield County, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
75°F
Average low
45°F
Precipitation
0.58 in
Record high
103°FSep 2, 1950
Record low
28°FSep 17, 1965
Chance of a freeze
35%
Days of 90°F or more
2.4
Daylight
13 h 18 min to 11 h 44 min
Cloud cover
44%
Humidity
49%
Dew point
40°F
Wind
7.8 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 181°F49°F102°F 202544°F 199910%0%
Sep 281°F49°F103°F 195043°F 199910%0%
Sep 380°F49°F102°F 199839°F 195610%0%
Sep 480°F49°F101°F 202039°F 195611%0%
Sep 580°F48°F101°F 197340°F 195611%0%
Sep 679°F48°F100°F 200342°F 201511%0%
Sep 779°F48°F100°F 202438°F 196011%0%
Sep 879°F48°F99°F 198137°F 196211%0%
Sep 978°F47°F96°F 202440°F 195911%0%
Sep 1078°F47°F97°F 199042°F 197212%0%
Sep 1177°F47°F99°F 195341°F 194912%0%
Sep 1277°F46°F97°F 201136°F 197012%0%
Sep 1377°F46°F96°F 201333°F 197012%0%
Sep 1476°F46°F99°F 201332°F 197012%0%
Sep 1576°F45°F98°F 197935°F 197013%0%
Sep 1676°F45°F97°F 198135°F 196513%0%
Sep 1775°F45°F99°F 198128°F 196513%0%
Sep 1875°F45°F97°F 198135°F 196514%0%
Sep 1974°F44°F96°F 200832°F 195714%0%
Sep 2074°F44°F92°F 197934°F 198314%0%
Sep 2173°F44°F101°F 196737°F 198314%0%
Sep 2273°F43°F99°F 196634°F 195515%0%
Sep 2372°F43°F97°F 200131°F 200015%0%
Sep 2472°F43°F100°F 201134°F 194815%0%
Sep 2572°F42°F94°F 202434°F 195515%0%
Sep 2671°F42°F92°F 195237°F 195516%0%
Sep 2771°F42°F93°F 196336°F 196116%0%
Sep 2870°F41°F95°F 196333°F 198516%0%
Sep 2970°F41°F88°F 196331°F 195016%0%
Sep 3069°F41°F89°F 197630°F 195417%0%

Chance of rain

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

September 1
sunrise 6:11 AM, sunset 7:29 PM
September 30
sunrise 6:48 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 USC00456610 (Pomeroy), public domain. Records: NOAA GHCN-Daily, station USW00024149, 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.