Mountain Top climate

Mountain Top Weather in September

NOAA 1991-2020 normals for Francis E Walter Dam, 13.8 km from Mountain Top

Average highs run from 75°F on September 1 to 65°F on September 30, and lows from 54°F to 44°F. Normal precipitation for the month is 5.24 in.

September day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Mountain Top, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
71°F
Average low
49°F
Precipitation
5.24 in
Record high
101°FSep 3, 1953
Record low
29°FSep 29, 2000
Chance of a freeze
28%
Daylight
13 h 06 min to 11 h 48 min
Cloud cover
59%
Humidity
73%
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 175°F54°F94°F 195342°F 20090%
Sep 275°F53°F98°F 195343°F 19490%
Sep 375°F53°F101°F 195342°F 19670%
Sep 474°F53°F92°F 195340°F 19970%
Sep 574°F52°F91°F 201843°F 19940%
Sep 674°F52°F91°F 198341°F 20000%
Sep 774°F52°F92°F 201538°F 19620%
Sep 873°F52°F95°F 201542°F 19550%
Sep 973°F51°F95°F 195939°F 19560%
Sep 1073°F51°F95°F 198334°F 19560%
Sep 1172°F51°F95°F 201337°F 19950%
Sep 1272°F50°F90°F 200538°F 19580%
Sep 1372°F50°F92°F 200537°F 19850%
Sep 1472°F50°F90°F 195237°F 19640%
Sep 1571°F49°F91°F 200538°F 19750%
Sep 1671°F49°F90°F 199137°F 19640%
Sep 1770°F49°F87°F 199136°F 19860%
Sep 1870°F48°F86°F 195536°F 19900%
Sep 1970°F48°F90°F 198334°F 19590%
Sep 2069°F47°F91°F 198333°F 19930%
Sep 2169°F47°F87°F 198032°F 19560%
Sep 2269°F47°F88°F 196534°F 19970%
Sep 2368°F46°F88°F 201935°F 19740%
Sep 2468°F46°F91°F 201730°F 19740%
Sep 2567°F46°F92°F 201735°F 19710%
Sep 2667°F45°F91°F 201736°F 19780%
Sep 2767°F45°F91°F 201731°F 19570%
Sep 2866°F45°F84°F 201930°F 19570%
Sep 2966°F44°F84°F 195429°F 20000%
Sep 3065°F44°F87°F 195332°F 19510%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Mountain Top, in percent, and of at least 0.1 inch of snowfall.00.21102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (EDT).

September 1
sunrise 6:30 AM, sunset 7:36 PM
September 30
sunrise 6:59 AM, sunset 6:47 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00363018 (Francis E Walter Dam), public domain. Records: NOAA GHCN-Daily, station USW00014777, 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.