Monaca climate

Monaca Weather in September

NOAA 1991-2020 normals for Beaver Falls 1 Ne, 9.2 km from Monaca

Average highs run from 80°F on September 1 to 71°F on September 30, and lows from 57°F to 48°F. Normal precipitation for the month is 3.62 in over about 10 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 Monaca, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
76°F
Average low
53°F
Precipitation
3.62 in
Record high
95°FSep 5, 2018
Record low
36°FSep 20, 2020
Chance of a freeze
1%
Days of 90°F or more
1.6
Daylight
13 h 05 min to 11 h 48 min
Cloud cover
54%
Humidity
69%
Dew point
53°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°F57°F94°F 201248°F 202532%0%
Sep 280°F57°F93°F 202647°F 202432%0%
Sep 379°F57°F94°F 201146°F 202432%0%
Sep 479°F56°F88°F 202346°F 202432%0%
Sep 579°F56°F95°F 201849°F 201732%0%
Sep 679°F56°F92°F 201850°F 201332%0%
Sep 778°F56°F91°F 201545°F 202432%0%
Sep 878°F55°F90°F 201542°F 202532%0%
Sep 978°F55°F89°F 201642°F 202532%0%
Sep 1078°F55°F88°F 201943°F 202532%0%
Sep 1177°F55°F93°F 201342°F 201733%0%
Sep 1277°F54°F89°F 201342°F 201733%0%
Sep 1377°F54°F86°F 201947°F 201233%0%
Sep 1476°F54°F85°F 201843°F 201433%0%
Sep 1576°F53°F91°F 201544°F 202033%0%
Sep 1676°F53°F86°F 202541°F 201133%0%
Sep 1775°F53°F84°F 202544°F 201333%0%
Sep 1875°F52°F86°F 202142°F 201333%0%
Sep 1975°F52°F86°F 202140°F 202033%0%
Sep 2074°F52°F84°F 201736°F 202033%0%
Sep 2174°F51°F88°F 201837°F 202033%0%
Sep 2274°F51°F88°F 201938°F 202033%0%
Sep 2373°F51°F87°F 201638°F 202034%0%
Sep 2473°F50°F89°F 201739°F 201334%0%
Sep 2572°F50°F90°F 201739°F 201334%0%
Sep 2672°F50°F89°F 201743°F 201334%0%
Sep 2772°F49°F91°F 201744°F 202235%0%
Sep 2871°F49°F91°F 201744°F 202235%0%
Sep 2971°F48°F91°F 201741°F 202235%0%
Sep 3071°F48°F83°F 202544°F 201235%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Monaca, 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 6:48 AM, sunset 7:53 PM
September 30
sunrise 7:17 AM, sunset 7:05 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00360475 (Beaver Falls 1 Ne), public domain. Records: NOAA GHCN-Daily, station USC00360475, 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.