Montgomery climate

Montgomery Weather in September

NOAA 1991-2020 normals for Williamsport, 9 km from Montgomery

Average highs run from 80°F on September 1 to 70°F on September 30, and lows from 59°F to 49°F. Normal precipitation for the month is 4.76 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 Montgomery, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
75°F
Average low
54°F
Precipitation
4.76 in
Record high
102°FSep 3, 1953
Record low
30°FSep 24, 1963
Chance of a freeze
2%
Days of 90°F or more
1.3
Daylight
13 h 06 min to 11 h 48 min
Cloud cover
59%
Humidity
72%
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°F59°F99°F 195346°F 194832%0%
Sep 280°F58°F101°F 195342°F 194932%0%
Sep 380°F58°F102°F 195342°F 196732%0%
Sep 479°F58°F94°F 195344°F 198732%0%
Sep 579°F58°F95°F 195443°F 199732%0%
Sep 679°F57°F93°F 201841°F 198832%0%
Sep 778°F57°F92°F 195439°F 196232%0%
Sep 878°F57°F94°F 201641°F 196232%0%
Sep 978°F56°F95°F 200242°F 195632%0%
Sep 1077°F56°F96°F 200239°F 194932%0%
Sep 1177°F56°F93°F 196436°F 199532%0%
Sep 1277°F56°F94°F 195239°F 195832%0%
Sep 1376°F55°F95°F 195240°F 198533%0%
Sep 1476°F55°F92°F 195235°F 197533%0%
Sep 1576°F55°F88°F 199838°F 196333%0%
Sep 1675°F54°F92°F 199138°F 196633%0%
Sep 1775°F54°F90°F 199135°F 195933%0%
Sep 1875°F53°F89°F 202537°F 195933%0%
Sep 1974°F53°F87°F 196535°F 202033%0%
Sep 2074°F53°F88°F 201735°F 199333%0%
Sep 2173°F52°F89°F 201733°F 195634%0%
Sep 2273°F52°F90°F 197036°F 196234%0%
Sep 2373°F52°F91°F 201735°F 198334%0%
Sep 2472°F51°F92°F 201730°F 196334%0%
Sep 2572°F51°F91°F 201731°F 196334%0%
Sep 2671°F50°F91°F 201737°F 196334%0%
Sep 2771°F50°F91°F 201734°F 195735%0%
Sep 2870°F50°F87°F 202532°F 196535%0%
Sep 2970°F49°F83°F 195333°F 200035%0%
Sep 3070°F49°F93°F 195332°F 195135%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Montgomery, 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 7:40 PM
September 30
sunrise 7:03 AM, sunset 6:51 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00014778 (Williamsport), public domain. Records: NOAA GHCN-Daily, station USW00014778, 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.