Blue Mounds climate

Blue Mounds Weather in September

NOAA 1991-2020 normals for Mazomanie Wwtp, 17 km from Blue Mounds

Average highs run from 78°F on September 1 to 69°F on September 30, and lows from 53°F to 42°F. Normal precipitation for the month is 2.84 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 Blue Mounds, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
74°F
Average low
47°F
Precipitation
2.84 in
Record high
95°FSep 9, 1978
Record low
24°FSep 26, 1984
Chance of a freeze
46%
Days of 90°F or more
1.3
Daylight
13 h 10 min to 11 h 46 min
Cloud cover
52%
Humidity
75%
Dew point
53°F
Wind
9.4 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 178°F53°F91°F 200042°F 198721%0%
Sep 278°F53°F92°F 201144°F 197621%0%
Sep 378°F52°F92°F 201139°F 198721%0%
Sep 478°F52°F88°F 201238°F 198421%0%
Sep 577°F52°F91°F 201240°F 198421%0%
Sep 677°F51°F88°F 195935°F 198221%0%
Sep 777°F51°F90°F 195936°F 198621%0%
Sep 877°F51°F93°F 197836°F 198622%0%
Sep 976°F50°F95°F 197840°F 198622%0%
Sep 1076°F50°F93°F 201341°F 196722%0%
Sep 1176°F49°F94°F 201341°F 199322%0%
Sep 1275°F49°F92°F 200539°F 197522%0%
Sep 1375°F48°F90°F 199836°F 201522%0%
Sep 1475°F48°F89°F 199838°F 196322%0%
Sep 1574°F48°F85°F 199433°F 198422%0%
Sep 1674°F47°F86°F 201734°F 198422%0%
Sep 1774°F47°F87°F 201730°F 198422%0%
Sep 1873°F46°F89°F 198837°F 198422%0%
Sep 1973°F46°F85°F 200034°F 199122%0%
Sep 2073°F46°F87°F 198432°F 199122%0%
Sep 2172°F45°F89°F 201729°F 199122%0%
Sep 2272°F45°F88°F 200528°F 197422%0%
Sep 2371°F44°F90°F 201729°F 199122%0%
Sep 2471°F44°F92°F 201727°F 198922%0%
Sep 2571°F44°F89°F 201735°F 196522%0%
Sep 2670°F43°F90°F 201724°F 198423%0%
Sep 2770°F43°F85°F 199825°F 198423%0%
Sep 2869°F42°F85°F 197129°F 197023%0%
Sep 2969°F42°F85°F 197125°F 198423%0%
Sep 3069°F42°F85°F 197125°F 198423%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Blue Mounds, 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 6:24 AM, sunset 7:34 PM
September 30
sunrise 6:56 AM, sunset 6:42 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00475189 (Mazomanie Wwtp), public domain. Records: NOAA GHCN-Daily, station USC00471416, 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.