Three Rivers climate

Three Rivers Weather in September

NOAA 1991-2020 normals for Choke Canyon Dam, 6.9 km from Three Rivers

Average highs run from 94°F on September 1 to 88°F on September 30, and lows from 73°F to 66°F. Normal precipitation for the month is 3.62 in over about 7 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 Three Rivers, in °F, with the record for each date.406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
91°F
Average low
70°F
Precipitation
3.62 in
Record high
112°FSep 6, 2000
Record low
50°FSep 30, 2020
Chance of a freeze
0%
Days of 90°F or more
21.5
Daylight
12 h 43 min to 11 h 55 min
Cloud cover
47%
Humidity
70%
Dew point
69°F
Wind
8.3 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 194°F73°F107°F 200069°F 198521%0%
Sep 294°F73°F107°F 200069°F 198722%0%
Sep 394°F73°F106°F 200069°F 199022%0%
Sep 493°F73°F107°F 200068°F 198722%0%
Sep 593°F72°F109°F 200064°F 198423%0%
Sep 693°F72°F112°F 200063°F 198423%0%
Sep 793°F72°F104°F 200060°F 201123%0%
Sep 892°F72°F104°F 202660°F 201123%0%
Sep 992°F72°F104°F 202660°F 201723%0%
Sep 1092°F71°F104°F 202662°F 201723%0%
Sep 1192°F71°F105°F 202661°F 202023%0%
Sep 1291°F71°F104°F 202661°F 201723%0%
Sep 1391°F71°F104°F 202661°F 201723%0%
Sep 1491°F71°F103°F 202661°F 198923%0%
Sep 1591°F70°F103°F 202661°F 199323%0%
Sep 1691°F70°F103°F 202660°F 198923%0%
Sep 1790°F70°F102°F 198761°F 198923%0%
Sep 1890°F70°F102°F 199561°F 200022%0%
Sep 1990°F69°F101°F 200560°F 200022%0%
Sep 2090°F69°F100°F 199557°F 199122%0%
Sep 2189°F69°F100°F 199359°F 199122%0%
Sep 2289°F69°F103°F 199252°F 199521%0%
Sep 2389°F68°F102°F 202552°F 199521%0%
Sep 2489°F68°F104°F 202554°F 199521%0%
Sep 2589°F68°F105°F 202555°F 198920%0%
Sep 2688°F68°F109°F 200554°F 199120%0%
Sep 2788°F67°F104°F 200554°F 199120%0%
Sep 2888°F67°F102°F 200555°F 200020%0%
Sep 2988°F67°F105°F 200554°F 199619%0%
Sep 3088°F66°F99°F 202450°F 202019%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Three Rivers, in percent, and of at least 0.1 inch of snowfall.05101520251102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (CDT).

September 1
sunrise 7:11 AM, sunset 7:54 PM
September 30
sunrise 7:25 AM, sunset 7:20 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00411720 (Choke Canyon Dam), public domain. Records: NOAA GHCN-Daily, station USC00411720, 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.