Washington Boro climate

Washington Boro Weather in September

NOAA 1991-2020 normals for Safe Harbor Dam, 10 km from Washington Boro

Average highs run from 82°F on September 1 to 71°F on September 30, and lows from 64°F to 54°F. Normal precipitation for the month is 4.88 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 Washington Boro, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
77°F
Average low
60°F
Precipitation
4.88 in
Record high
98°FSep 4, 2023
Record low
37°FSep 29, 2000
Chance of a freeze
0%
Days of 90°F or more
1.3
Daylight
13 h 03 min to 11 h 49 min
Cloud cover
57%
Humidity
72%
Dew point
56°F
Wind
5.4 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 182°F64°F96°F 201049°F 200929%0%
Sep 282°F64°F95°F 201049°F 200129%0%
Sep 382°F64°F94°F 202348°F 202429%0%
Sep 481°F63°F98°F 202348°F 202429%0%
Sep 581°F63°F95°F 202349°F 200029%0%
Sep 681°F63°F96°F 202346°F 200029%0%
Sep 780°F62°F98°F 202344°F 200029%0%
Sep 880°F62°F94°F 201648°F 202429%0%
Sep 980°F62°F93°F 201544°F 202429%0%
Sep 1079°F62°F95°F 201647°F 201729%0%
Sep 1179°F61°F94°F 201345°F 201229%0%
Sep 1279°F61°F93°F 202049°F 201229%0%
Sep 1378°F61°F90°F 200546°F 200229%0%
Sep 1478°F60°F91°F 201646°F 201429%0%
Sep 1578°F60°F88°F 202142°F 201329%0%
Sep 1677°F60°F87°F 200542°F 200729%0%
Sep 1777°F59°F84°F 200542°F 200730%0%
Sep 1876°F59°F86°F 201641°F 201330%0%
Sep 1976°F59°F86°F 202441°F 202030%0%
Sep 2076°F58°F85°F 201739°F 202030%0%
Sep 2175°F58°F87°F 201938°F 202030%0%
Sep 2275°F57°F91°F 201039°F 202030%0%
Sep 2374°F57°F93°F 201942°F 199930%0%
Sep 2474°F57°F92°F 201040°F 201331%0%
Sep 2574°F56°F90°F 201739°F 201231%0%
Sep 2673°F56°F89°F 200740°F 200131%0%
Sep 2773°F55°F89°F 201740°F 200031%0%
Sep 2872°F55°F84°F 201941°F 200031%0%
Sep 2972°F55°F83°F 201937°F 200031%0%
Sep 3071°F54°F77°F 201037°F 200031%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Washington Boro, 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 6:34 AM, sunset 7:37 PM
September 30
sunrise 7:01 AM, sunset 6:50 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00367732 (Safe Harbor Dam), public domain. Records: NOAA GHCN-Daily, station USW00054737, 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.