Monroe County climate

Monroe County Weather in September

NOAA 1991-2020 normals for Dundee, 13.4 km from Monroe County

Average highs run from 79°F on September 1 to 70°F on September 30, and lows from 58°F to 47°F. Normal precipitation for the month is 2.86 in over about 9 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 Monroe County, 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
53°F
Precipitation
2.86 in
Record high
93°FSep 4, 2008
Record low
33°FSep 24, 2012
Chance of a freeze
4%
Days of 90°F or more
1.7
Daylight
13 h 07 min to 11 h 47 min
Cloud cover
53%
Humidity
72%
Dew point
54°F
Wind
8.9 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 179°F58°F91°F 201044°F 200931%0%
Sep 279°F57°F92°F 201146°F 200931%0%
Sep 379°F57°F92°F 201148°F 200931%0%
Sep 479°F57°F93°F 200850°F 200931%0%
Sep 579°F56°F91°F 201444°F 201031%0%
Sep 678°F56°F89°F 201646°F 201331%0%
Sep 778°F56°F91°F 201652°F 201331%0%
Sep 878°F56°F87°F 201551°F 201431%0%
Sep 978°F55°F83°F 201646°F 201231%0%
Sep 1077°F55°F93°F 201343°F 201031%0%
Sep 1177°F55°F92°F 201341°F 200831%0%
Sep 1277°F54°F88°F 201946°F 200831%0%
Sep 1376°F54°F90°F 201940°F 201531%0%
Sep 1476°F53°F83°F 201839°F 201331%0%
Sep 1576°F53°F85°F 201841°F 201131%0%
Sep 1675°F53°F84°F 201839°F 201131%0%
Sep 1775°F52°F84°F 201840°F 201331%0%
Sep 1875°F52°F89°F 201836°F 202031%0%
Sep 1974°F52°F84°F 201634°F 201231%0%
Sep 2074°F51°F84°F 201940°F 201231%0%
Sep 2174°F51°F90°F 201042°F 202032%0%
Sep 2273°F50°F90°F 201044°F 201432%0%
Sep 2373°F50°F90°F 201041°F 201232%0%
Sep 2472°F50°F86°F 201033°F 201232%0%
Sep 2572°F49°F80°F 202044°F 201832%0%
Sep 2672°F49°F83°F 202045°F 201032%0%
Sep 2771°F48°F82°F 202039°F 201833%0%
Sep 2871°F48°F78°F 201445°F 201233%0%
Sep 2970°F48°F79°F 201440°F 201233%0%
Sep 3070°F47°F80°F 201935°F 200933%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Monroe County, 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 7:00 AM, sunset 8:07 PM
September 30
sunrise 7:30 AM, sunset 7:17 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00202308 (Dundee), public domain. Records: NOAA GHCN-Daily, station USC00201250, 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.