Park City climate

Park City Weather in September

NOAA 1991-2020 normals for Mammoth Cave, 10 km from Park City

Average highs run from 89°F on September 1 to 80°F on September 30, and lows from 64°F to 55°F. Normal precipitation for the month is 3.95 in over about 8 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 Park City, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
85°F
Average low
60°F
Precipitation
3.95 in
Record high
103°FSep 5, 1954
Record low
33°FSep 26, 2001
Chance of a freeze
0%
Days of 90°F or more
7.2
Daylight
12 h 58 min to 11 h 50 min
Cloud cover
48%
Humidity
69%
Dew point
58°F
Wind
5.8 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 189°F64°F101°F 195349°F 195428%0%
Sep 289°F64°F100°F 195347°F 198727%0%
Sep 388°F64°F99°F 199949°F 199527%0%
Sep 488°F64°F101°F 199950°F 199427%0%
Sep 588°F63°F103°F 195448°F 198427%0%
Sep 688°F63°F102°F 195445°F 198827%0%
Sep 788°F63°F99°F 199044°F 198827%0%
Sep 887°F63°F98°F 199945°F 195627%0%
Sep 987°F62°F96°F 198045°F 195826%0%
Sep 1087°F62°F96°F 200244°F 195626%0%
Sep 1187°F62°F97°F 198341°F 197626%0%
Sep 1286°F61°F94°F 199944°F 197626%0%
Sep 1386°F61°F97°F 199841°F 195326%0%
Sep 1486°F61°F96°F 199838°F 196426%0%
Sep 1585°F60°F94°F 195642°F 196426%0%
Sep 1685°F60°F95°F 199840°F 196126%0%
Sep 1785°F60°F93°F 195540°F 200026%0%
Sep 1885°F59°F98°F 195344°F 198126%0%
Sep 1984°F59°F96°F 195441°F 197326%0%
Sep 2084°F59°F94°F 195540°F 199126%0%
Sep 2184°F58°F95°F 195539°F 195626%0%
Sep 2283°F58°F94°F 195535°F 198327%0%
Sep 2383°F58°F95°F 200738°F 197427%0%
Sep 2483°F57°F94°F 200736°F 199027%0%
Sep 2582°F57°F94°F 200736°F 196527%0%
Sep 2682°F56°F92°F 199833°F 200127%0%
Sep 2782°F56°F92°F 199835°F 199127%0%
Sep 2881°F56°F93°F 199840°F 198527%0%
Sep 2981°F55°F96°F 195335°F 196727%0%
Sep 3080°F55°F93°F 195338°F 196327%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Park City, in percent, and of at least 0.1 inch of snowfall.01020301102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (CDT).

September 1
sunrise 6:15 AM, sunset 7:13 PM
September 30
sunrise 6:39 AM, sunset 6:29 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00155097 (Mammoth Cave), public domain. Records: NOAA GHCN-Daily, station USC00153246, 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.