Rosedale climate

Rosedale Weather in September

NOAA 1991-2020 normals for Rockville, 15.9 km from Rosedale

Average highs run from 83°F on September 1 to 74°F on September 30, and lows from 58°F to 47°F. Normal precipitation for the month is 3.14 in over about 6 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 Rosedale, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
79°F
Average low
53°F
Precipitation
3.14 in
Record high
98°FSep 2, 2011
Record low
33°FSep 22, 1999
Chance of a freeze
11%
Days of 90°F or more
3.0
Daylight
13 h 03 min to 11 h 49 min
Cloud cover
46%
Humidity
69%
Dew point
56°F
Wind
8.1 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 183°F58°F97°F 201146°F 200922%0%
Sep 283°F57°F98°F 201147°F 200922%0%
Sep 383°F57°F98°F 201148°F 202422%0%
Sep 483°F57°F97°F 202649°F 201022%0%
Sep 582°F56°F95°F 199944°F 201022%0%
Sep 682°F56°F95°F 199843°F 201721%0%
Sep 782°F56°F93°F 201541°F 201721%0%
Sep 882°F56°F94°F 200239°F 202421%0%
Sep 981°F55°F94°F 200240°F 202421%0%
Sep 1081°F55°F97°F 201342°F 199921%0%
Sep 1181°F55°F95°F 201343°F 201721%0%
Sep 1281°F54°F92°F 201945°F 200721%0%
Sep 1380°F54°F92°F 201142°F 201521%0%
Sep 1480°F53°F91°F 199839°F 201421%0%
Sep 1580°F53°F91°F 202538°F 200721%0%
Sep 1679°F53°F90°F 201940°F 200021%0%
Sep 1779°F52°F91°F 201842°F 199922%0%
Sep 1879°F52°F93°F 201842°F 199922%0%
Sep 1978°F52°F93°F 201837°F 202022%0%
Sep 2078°F51°F93°F 201838°F 202022%0%
Sep 2178°F51°F95°F 202240°F 202022%0%
Sep 2277°F50°F94°F 201733°F 199922%0%
Sep 2377°F50°F94°F 201036°F 199923%0%
Sep 2477°F50°F93°F 201734°F 201223%0%
Sep 2576°F49°F92°F 201737°F 200123%0%
Sep 2676°F49°F92°F 201733°F 200123%0%
Sep 2775°F48°F91°F 199838°F 200123%0%
Sep 2875°F48°F92°F 199934°F 202223%0%
Sep 2975°F48°F91°F 202534°F 202223%0%
Sep 3074°F47°F92°F 201935°F 200324%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Rosedale, 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 (EDT).

September 1
sunrise 7:17 AM, sunset 8:20 PM
September 30
sunrise 7:44 AM, sunset 7:33 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00127522 (Rockville), public domain. Records: NOAA GHCN-Daily, station USW00003868, 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.