Idyllwild climate

Idyllwild Weather in September

NOAA 1991-2020 normals for Idyllwild Fire Dept, 2.2 km from Idyllwild

Average highs run from 85°F on September 1 to 76°F on September 30, and lows from 54°F to 46°F. Normal precipitation for the month is 0.79 in over about 2 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 Idyllwild, in °F, with the record for each date.406080100120140151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
81°F
Average low
50°F
Precipitation
0.79 in
Record high
122°FSep 5, 2020
Record low
56°FSep 30, 2019
Chance of a freeze
9%
Days of 90°F or more
2.0
Daylight
12 h 51 min to 11 h 51 min
Cloud cover
21%
Humidity
31%
Dew point
44°F
Wind
6.7 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 185°F54°F115°F 200763°F 19999%0%
Sep 284°F53°F113°F 201065°F 19999%0%
Sep 384°F53°F117°F 201064°F 19999%0%
Sep 484°F53°F116°F 202063°F 20009%0%
Sep 584°F53°F122°F 202065°F 20169%0%
Sep 684°F53°F120°F 202067°F 20168%0%
Sep 783°F52°F112°F 201169°F 20018%0%
Sep 883°F52°F116°F 201867°F 20108%0%
Sep 983°F52°F115°F 202363°F 20108%0%
Sep 1083°F52°F113°F 202463°F 20108%0%
Sep 1182°F52°F112°F 200963°F 20057%0%
Sep 1282°F51°F113°F 202161°F 20057%0%
Sep 1382°F51°F112°F 202159°F 20057%0%
Sep 1482°F51°F110°F 200061°F 20057%0%
Sep 1581°F50°F112°F 200060°F 20167%0%
Sep 1681°F50°F111°F 202064°F 20057%0%
Sep 1781°F50°F113°F 202063°F 20076%0%
Sep 1880°F50°F110°F 202063°F 20056%0%
Sep 1980°F49°F112°F 200063°F 20106%0%
Sep 2080°F49°F109°F 201258°F 20046%0%
Sep 2179°F49°F110°F 200361°F 20076%0%
Sep 2279°F48°F110°F 200361°F 20076%0%
Sep 2379°F48°F111°F 200259°F 20076%0%
Sep 2478°F48°F112°F 202461°F 20176%0%
Sep 2578°F48°F114°F 202460°F 19986%0%
Sep 2678°F47°F111°F 200959°F 19986%0%
Sep 2777°F47°F113°F 202460°F 19986%0%
Sep 2877°F47°F111°F 202461°F 19986%0%
Sep 2977°F46°F109°F 202460°F 20076%0%
Sep 3076°F46°F111°F 202056°F 20196%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Idyllwild, in percent, and of at least 0.1 inch of snowfall.02468101102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (PDT).

September 1
sunrise 6:21 AM, sunset 7:12 PM
September 30
sunrise 6:41 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 USC00044211 (Idyllwild Fire Dept), public domain. Records: NOAA GHCN-Daily, station USW00093138, 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.