Lancaster climate

Lancaster Weather in September

NOAA 1991-2020 normals for Lancaster, 0.7 km from Lancaster

Average highs run from 82°F on September 1 to 73°F on September 30, and lows from 60°F to 50°F. Normal precipitation for the month is 3.22 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 Lancaster, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
78°F
Average low
55°F
Precipitation
3.22 in
Record high
96°FSep 8, 2002
Record low
30°FSep 22, 1999
Chance of a freeze
2%
Days of 90°F or more
2.7
Daylight
13 h 02 min to 11 h 48 min
Cloud cover
50%
Humidity
67%
Dew point
54°F
Wind
4.7 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°F60°F92°F 201042°F 200927%0%
Sep 282°F59°F94°F 201043°F 200927%0%
Sep 382°F59°F95°F 201142°F 199727%0%
Sep 482°F59°F93°F 200837°F 199727%0%
Sep 582°F58°F94°F 200741°F 199726%0%
Sep 681°F58°F94°F 199844°F 201326%0%
Sep 781°F58°F95°F 200239°F 202526%0%
Sep 881°F58°F96°F 200239°F 202426%0%
Sep 981°F57°F95°F 200239°F 202526%0%
Sep 1080°F57°F94°F 200239°F 199826%0%
Sep 1180°F57°F91°F 201939°F 199926%0%
Sep 1280°F56°F93°F 201942°F 200226%0%
Sep 1379°F56°F94°F 201942°F 200226%0%
Sep 1479°F56°F95°F 199840°F 201326%0%
Sep 1579°F55°F89°F 202436°F 199926%0%
Sep 1678°F55°F89°F 202635°F 200726%0%
Sep 1778°F54°F88°F 202136°F 199926%0%
Sep 1878°F54°F91°F 202136°F 199926%0%
Sep 1977°F54°F89°F 202136°F 201226%0%
Sep 2077°F53°F92°F 202435°F 202026%0%
Sep 2176°F53°F94°F 202434°F 199926%0%
Sep 2276°F53°F95°F 202430°F 199927%0%
Sep 2376°F52°F92°F 201034°F 201227%0%
Sep 2475°F52°F92°F 200731°F 201227%0%
Sep 2575°F52°F92°F 200735°F 199627%0%
Sep 2674°F51°F90°F 201739°F 200327%0%
Sep 2774°F51°F91°F 201737°F 200028%0%
Sep 2874°F50°F90°F 201936°F 200128%0%
Sep 2973°F50°F87°F 202533°F 200028%0%
Sep 3073°F50°F91°F 201934°F 200128%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Lancaster, 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 6:59 AM, sunset 8:01 PM
September 30
sunrise 7:26 AM, sunset 7:14 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00334403 (Lancaster), public domain. Records: NOAA GHCN-Daily, station USW00053844, 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.