Brookfield climate

Brookfield Weather in September

NOAA 1991-2020 normals for Brookfield, 2.5 km from Brookfield

Average highs run from 83°F on September 1 to 74°F on September 30, and lows from 61°F to 51°F. Normal precipitation for the month is 3.99 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 Brookfield, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
79°F
Average low
56°F
Precipitation
3.99 in
Record high
100°FSep 5, 2026
Record low
32°FSep 29, 2003
Chance of a freeze
2%
Days of 90°F or more
3.4
Daylight
13 h 03 min to 11 h 48 min
Cloud cover
46%
Humidity
71%
Dew point
55°F
Wind
8.7 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 183°F61°F99°F 202647°F 200927%0%
Sep 283°F61°F99°F 202653°F 200727%0%
Sep 383°F61°F97°F 202652°F 201327%0%
Sep 482°F60°F97°F 202646°F 202527%0%
Sep 582°F60°F100°F 202647°F 200826%0%
Sep 682°F60°F96°F 201543°F 202526%0%
Sep 782°F59°F97°F 201341°F 202526%0%
Sep 881°F59°F99°F 201346°F 202426%0%
Sep 981°F59°F99°F 201343°F 200826%0%
Sep 1081°F58°F98°F 201347°F 199927%0%
Sep 1180°F58°F98°F 200048°F 200727%0%
Sep 1280°F58°F95°F 202542°F 200727%0%
Sep 1380°F57°F96°F 202540°F 201427%0%
Sep 1480°F57°F92°F 202540°F 199927%0%
Sep 1579°F57°F94°F 202536°F 200727%0%
Sep 1679°F56°F93°F 201940°F 199927%0%
Sep 1779°F56°F93°F 202641°F 199927%0%
Sep 1878°F56°F93°F 201844°F 201227%0%
Sep 1978°F55°F96°F 202242°F 200327%0%
Sep 2078°F55°F97°F 202237°F 200627%0%
Sep 2177°F54°F92°F 201737°F 199927%0%
Sep 2277°F54°F91°F 201735°F 199927%0%
Sep 2377°F54°F92°F 201734°F 201227%0%
Sep 2476°F53°F90°F 201639°F 200226%0%
Sep 2576°F53°F89°F 199837°F 200126%0%
Sep 2676°F52°F90°F 202136°F 200026%0%
Sep 2775°F52°F91°F 202139°F 200126%0%
Sep 2875°F52°F91°F 202137°F 200326%0%
Sep 2974°F51°F91°F 202332°F 200326%0%
Sep 3074°F51°F91°F 202337°F 200326%0%

Chance of rain

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

September 1
sunrise 6:40 AM, sunset 7:43 PM
September 30
sunrise 7:08 AM, sunset 6:56 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00230980 (Brookfield), public domain. Records: NOAA GHCN-Daily, station USW00053916, 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.