Prospect climate

Prospect Weather in September

NOAA 1991-2020 normals for Louisville Mcalpine, 17.1 km from Prospect

Average highs run from 86°F on September 1 to 77°F on September 30, and lows from 66°F to 57°F. Normal precipitation for the month is 3.93 in over about 8 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 Prospect, in °F, with the record for each date.406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
82°F
Average low
62°F
Precipitation
3.93 in
Record high
102°FSep 3, 2011
Record low
41°FSep 14, 2014
Chance of a freeze
0%
Days of 90°F or more
7.0
Daylight
13 h 00 min to 11 h 50 min
Cloud cover
48%
Humidity
68%
Dew point
56°F
Wind
6.3 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 186°F66°F101°F 201157°F 202526%0%
Sep 285°F66°F101°F 201156°F 201725%0%
Sep 385°F65°F102°F 201156°F 201725%0%
Sep 485°F65°F98°F 202656°F 201725%0%
Sep 585°F65°F99°F 202660°F 201125%0%
Sep 685°F65°F96°F 202651°F 201725%0%
Sep 784°F64°F94°F 201551°F 201725%0%
Sep 884°F64°F93°F 201551°F 201725%0%
Sep 984°F64°F93°F 201551°F 202425%0%
Sep 1084°F63°F93°F 201652°F 202425%0%
Sep 1183°F63°F99°F 201953°F 201724%0%
Sep 1283°F63°F93°F 201953°F 201724%0%
Sep 1383°F63°F95°F 201950°F 201524%0%
Sep 1482°F62°F96°F 201941°F 201424%0%
Sep 1582°F62°F90°F 201641°F 201424%0%
Sep 1682°F62°F95°F 202653°F 201124%0%
Sep 1782°F61°F95°F 201954°F 201424%0%
Sep 1881°F61°F96°F 202653°F 201424%0%
Sep 1981°F61°F93°F 201851°F 201224%0%
Sep 2081°F60°F93°F 201845°F 201225%0%
Sep 2180°F60°F93°F 201847°F 201225%0%
Sep 2280°F60°F96°F 202252°F 201525%0%
Sep 2380°F59°F91°F 201645°F 201525%0%
Sep 2479°F59°F91°F 201742°F 201225%0%
Sep 2579°F58°F91°F 201646°F 202125%0%
Sep 2679°F58°F90°F 201652°F 202125%0%
Sep 2778°F58°F90°F 201749°F 202225%0%
Sep 2878°F57°F93°F 201946°F 202225%0%
Sep 2978°F57°F94°F 201946°F 202225%0%
Sep 3077°F57°F92°F 201946°F 202225%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Prospect, in percent, and of at least 0.1 inch of snowfall.01020301102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (EDT).

September 1
sunrise 7:12 AM, sunset 8:12 PM
September 30
sunrise 7:37 AM, sunset 7:27 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00154955 (Louisville Mcalpine), public domain. Records: NOAA GHCN-Daily, station USC00154955, 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.