Cairnbrook climate

Cairnbrook Weather in September

NOAA 1991-2020 normals for Shawnee SP, 18.1 km from Cairnbrook

Average highs run from 80°F on September 1 to 70°F on September 30, and lows from 55°F to 44°F. Normal precipitation for the month is 3.74 in over about 11 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 Cairnbrook, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
75°F
Average low
50°F
Precipitation
3.74 in
Record high
89°FSep 2, 2010
Record low
34°FSep 19, 2020
Chance of a freeze
15%
Days of 90°F or more
1.1
Daylight
13 h 04 min to 11 h 48 min
Cloud cover
58%
Humidity
70%
Dew point
52°F
Wind
3.8 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 180°F55°F84°F 201044°F 200935%0%
Sep 280°F55°F89°F 201042°F 201735%0%
Sep 380°F54°F86°F 201042°F 201735%0%
Sep 479°F54°F83°F 201042°F 202435%0%
Sep 579°F54°F83°F 201842°F 200035%0%
Sep 679°F54°F85°F 201840°F 200035%0%
Sep 779°F53°F83°F 201543°F 201335%0%
Sep 878°F53°F85°F 201541°F 202435%0%
Sep 978°F53°F87°F 201541°F 202435%0%
Sep 1077°F52°F85°F 201542°F 201735%0%
Sep 1177°F52°F83°F 201640°F 201735%0%
Sep 1277°F52°F81°F 201941°F 201735%0%
Sep 1376°F51°F79°F 200545°F 200235%0%
Sep 1476°F51°F79°F 201641°F 201435%0%
Sep 1576°F50°F80°F 200838°F 200135%0%
Sep 1675°F50°F77°F 200538°F 200135%0%
Sep 1775°F50°F77°F 201538°F 200735%0%
Sep 1874°F49°F80°F 201539°F 200735%0%
Sep 1974°F49°F79°F 201534°F 202035%0%
Sep 2074°F48°F81°F 201534°F 202035%0%
Sep 2173°F48°F79°F 201638°F 202035%0%
Sep 2273°F48°F81°F 201838°F 202035%0%
Sep 2372°F47°F80°F 201637°F 202235%0%
Sep 2472°F47°F80°F 201638°F 201235%0%
Sep 2572°F46°F81°F 200738°F 201235%0%
Sep 2671°F46°F82°F 201738°F 200035%0%
Sep 2771°F46°F82°F 201738°F 200135%0%
Sep 2870°F45°F83°F 201740°F 202235%0%
Sep 2970°F45°F77°F 201936°F 200035%0%
Sep 3070°F44°F76°F 201937°F 200635%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Cairnbrook, in percent, and of at least 0.1 inch of snowfall.0102030401102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (EDT).

September 1
sunrise 6:43 AM, sunset 7:47 PM
September 30
sunrise 7:11 AM, sunset 6:59 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00368011 (Shawnee SP), public domain. Records: NOAA GHCN-Daily, station USC00364839, 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.