Sumner climate

Sumner Weather in September

NOAA 1991-2020 normals for Lawrenceville 2WSW, 12.3 km from Sumner

Average highs run from 86°F on September 1 to 77°F on September 30, and lows from 61°F to 50°F. Normal precipitation for the month is 3.56 in over about 7 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 Sumner, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
82°F
Average low
56°F
Precipitation
3.56 in
Record high
99°FSep 4, 2011
Record low
34°FSep 24, 1995
Chance of a freeze
0%
Days of 90°F or more
5.0
Daylight
13 h 00 min to 11 h 49 min
Cloud cover
46%
Humidity
69%
Dew point
57°F
Wind
7.6 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°F61°F98°F 201352°F 200921%0%
Sep 286°F61°F98°F 202650°F 199421%0%
Sep 385°F60°F98°F 201150°F 199422%0%
Sep 485°F60°F99°F 201149°F 199722%0%
Sep 585°F60°F99°F 202646°F 199722%0%
Sep 685°F59°F99°F 202646°F 199722%0%
Sep 785°F59°F96°F 199843°F 201722%0%
Sep 884°F59°F96°F 200242°F 202422%0%
Sep 984°F58°F97°F 200240°F 202422%0%
Sep 1084°F58°F98°F 200248°F 199822%0%
Sep 1183°F58°F98°F 200245°F 202421%0%
Sep 1283°F57°F96°F 201346°F 199321%0%
Sep 1383°F57°F96°F 199146°F 202321%0%
Sep 1483°F57°F96°F 199144°F 199621%0%
Sep 1582°F56°F94°F 199143°F 199622%0%
Sep 1682°F56°F96°F 202643°F 200722%0%
Sep 1782°F55°F94°F 201945°F 200022%0%
Sep 1881°F55°F95°F 201846°F 199922%0%
Sep 1981°F55°F95°F 201842°F 201222%0%
Sep 2080°F54°F95°F 201837°F 199122%0%
Sep 2180°F54°F93°F 196338°F 199122%0%
Sep 2280°F53°F96°F 201039°F 199123%0%
Sep 2379°F53°F93°F 200535°F 199523%0%
Sep 2479°F52°F95°F 200734°F 199523%0%
Sep 2579°F52°F93°F 200735°F 199523%0%
Sep 2678°F52°F91°F 201739°F 200123%0%
Sep 2778°F51°F92°F 201738°F 199123%0%
Sep 2877°F51°F92°F 199837°F 202223%0%
Sep 2977°F50°F92°F 199940°F 202223%0%
Sep 3077°F50°F94°F 201936°F 196323%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Sumner, in percent, and of at least 0.1 inch of snowfall.05101520251102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (CDT).

September 1
sunrise 6:21 AM, sunset 7:21 PM
September 30
sunrise 6:47 AM, sunset 6:36 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00114957 (Lawrenceville 2WSW), public domain. Records: NOAA GHCN-Daily, station USC00114957, 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.