Poplar climate

Poplar Weather in September

NOAA 1991-2020 normals for Brule RS, 16.6 km from Poplar

Average highs run from 72°F on September 1 to 61°F on September 30, and lows from 51°F to 41°F. Normal precipitation for the month is 3.57 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 Poplar, in °F, with the record for each date.020406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
67°F
Average low
46°F
Precipitation
3.57 in
Record high
97°FSep 8, 1976
Record low
19°FSep 13, 1963
Chance of a freeze
64%
Daylight
13 h 19 min to 11 h 44 min
Cloud cover
61%
Humidity
74%
Dew point
49°F
Wind
8.9 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 172°F51°F92°F 195332°F 19090%
Sep 272°F51°F94°F 198337°F 19650%
Sep 371°F50°F94°F 194733°F 19740%
Sep 471°F50°F91°F 194830°F 19610%
Sep 571°F50°F94°F 194733°F 19570%
Sep 670°F50°F93°F 197835°F 19650%
Sep 770°F49°F91°F 200232°F 19560%
Sep 870°F49°F97°F 197628°F 19560%
Sep 969°F49°F89°F 194729°F 19560%
Sep 1069°F48°F89°F 194730°F 19170%
Sep 1169°F48°F90°F 200528°F 19650%
Sep 1268°F48°F93°F 194828°F 19550%
Sep 1368°F47°F87°F 199019°F 19630%
Sep 1468°F47°F81°F 199729°F 19630%
Sep 1567°F47°F86°F 192030°F 20070%
Sep 1667°F46°F93°F 194832°F 19160%
Sep 1766°F46°F90°F 194825°F 19590%
Sep 1866°F46°F88°F 198429°F 19160%
Sep 1966°F45°F90°F 198428°F 19290%
Sep 2065°F45°F85°F 202225°F 19560%
Sep 2165°F45°F87°F 194126°F 19560%
Sep 2264°F44°F83°F 194125°F 19740%
Sep 2364°F44°F87°F 201728°F 19130%
Sep 2463°F43°F85°F 193024°F 19130%
Sep 2563°F43°F84°F 195023°F 19470%
Sep 2663°F43°F90°F 192023°F 19650%
Sep 2762°F42°F86°F 202422°F 19570%
Sep 2862°F42°F82°F 195223°F 19610%
Sep 2961°F41°F81°F 200025°F 19620%
Sep 3061°F41°F83°F 195222°F 19470%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Poplar, 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 (CDT).

September 1
sunrise 6:27 AM, sunset 7:46 PM
September 30
sunrise 7:05 AM, sunset 6:49 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00471131 (Brule RS), public domain. Records: NOAA GHCN-Daily, station USC00478349, 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.