Milwaukee, WI

Wisconsin · Records since 1871–2026

☀️ 74°F
Currently in Milwaukee
As of 1:30 PM CDT

Records for September 11

🔥 Record High

94°F

September 11, 1931

+19° from 75° normal

❄ Record Low

38°F

September 11, 1943

-20° from 58° normal
🌞 Normal high: 75°F 🌑 Normal low: 58°F 1991–2020 normals

All-Time Records — Milwaukee

🔥
105°F
Hottest Day Ever
Jul 24, 1934
❄
-26°F
Coldest Day Ever
Feb 3, 1996
🌧
6.81"
Wettest Day Ever
Aug 6, 1986
☃
16.7"
Most Snow in One Day
Feb 10, 1960

First & Last Dates — Milwaukee

How early and how late each seasonal turning point has ever arrived, across the full period of record

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Range ever recorded Normal date (1991–2020)
222 days
Longest growing season
1985
124 days
Shortest growing season
1961
182 days
Normal growing season
1991–2020 average

Top 10 Record Highs — September 11

# Temp Date
🏆 94°F September 11, 1931
2 93°F September 11, 1895
3 92°F September 11, 2005
4 91°F September 11, 1873
5 90°F September 11, 1906
6 90°F September 11, 1874
7 89°F September 11, 2019
8 88°F September 11, 1978
9 88°F September 11, 1961
10 88°F September 11, 1948

Top 5 Record Lows — September 11

# Temp Date
🥶 38°F September 11, 1943
2 41°F September 11, 1917
3 42°F September 11, 1955
4 43°F September 11, 1878
5 44°F September 11, 1995
About this data — Records are sourced from the NOAA Threadex dataset via RCC ACIS, a quality-controlled record for long-term climate stations. Threadex adjusts for station relocations and observation-time changes, making records comparable across all years since 1871–2026. Climate normals represent the 1991–2020 average.

Heat Wave Summary — Milwaukee

threshold: 89°F (90th percentile of historical Jun–Aug highs)
3.8
Avg heat wave length
days (historical)
95°
Avg peak temp
during heat waves
15
Dangerous nights 2026
Overnights ≥ 70°F
2
Heat waves 2026
so far

Days ≥ 90°F Per Year

1871–2026
9
2026 so far
9
Avg/year 1970–2025
11
Avg/year (last 10 complete)
36
Most in a year (1988)

Average Daily High by Decade

Full year · complete decades only

Longest Heat Waves — Milwaukee

# Dates Days Peak Avg High Avg Overnight Low
🏆 Aug 25, 1953 – Sep 3, 1953 10 98°F (Sep 1) 95°F 69°F
2 Jul 7, 1936 – Jul 14, 1936 8 101°F (Jul 8) 99°F 77°F
3 Aug 4, 1900 – Aug 11, 1900 8 96°F (Aug 5) 94°F 73°F
4 Jul 19, 1940 – Jul 25, 1940 7 102°F (Jul 25) 96°F 73°F
5 Aug 15, 1955 – Aug 21, 1955 7 100°F (Aug 21) 95°F 69°F
6 Jun 30, 1911 – Jul 5, 1911 6 99°F (Jul 3) 96°F 71°F
7 Jul 28, 2006 – Aug 2, 2006 6 98°F (Jul 31) 94°F 73°F
8 Sep 8, 1931 – Sep 13, 1931 6 97°F (Sep 10) 93°F 71°F
9 Jul 23, 1892 – Jul 28, 1892 6 95°F (Jul 27) 92°F 72°F
10 Jul 23, 2021 – Jul 28, 2021 6 95°F (Jul 26) 92°F 72°F

Heat Waves Per Year

Warm Summer Nights (Jun–Aug)

Nights where the overnight low exceeded the 1991–2020 normal low

45
2026 total
above-normal nights
35.3
Avg / summer
1970–2020
66
Most in a summer
2010

Above-Normal Summer Nights Per Year

Average June–August Low by Decade

Overnight lows · complete decades only

Precipitation

Annual totals and trend across the full period of record · see this year's standing →

Monthly Precipitation — Last 24 Months

Blue = actual · dashed line = monthly normal

Annual Precipitation Per Year (1871–2026)

Blue = above average · tan = below average · gold = 2026 (partial)
Since 1871, annual totals have trended +0.32" per decade, about +4.9" across the record.

Heavy Rain Days Per Year (≥ 1.0")

Compare year-to-year changes in days with heavy rainfall (≥ 1.0")

This Year — 2026

How Milwaukee is tracking against normal, year to date

Daily High Temperature vs Normal

Above normal Below normal

117 of 253 days with data were above the 1991–2020 normal high for their date.

Precipitation, Year to Date

27.24"
2026 YTD
Normal: 25.55"
+1.69"
0.59"
September so far
September normal: 3.16"
-2.57"
9
2026 heavy rain days
Days with ≥ 1.0"

Accumulation vs. Normal

Running total since Jan 1 against the normal pace for the same date · Milwaukee is 1.69" ahead of the normal pace

Period Review — Jun 12 – Sep 10, 2026

Any window, evaluated against every other year on record — 91 days

Quick picks: Last 7 days Last 30 days Last 90 days This month
Seasons: Spring (Mar–May) Summer (Jun–Aug) Fall (Sep–Nov)
72.0°F
Average temperature
21st-warmest of 156
+1.0°
vs. average
Normal: 71.0°F (1991–2020)
8.94"
Precipitation
77th-driest of 156
-1.83"
vs. average
Normal: 10.77" · 83% of normal

Average Temperature by Year — Jun 12 – Sep 10

1871–2026 · 2026 highlighted · trend +0.21° per decade (warming since 1871)

Precipitation by Year — Jun 12 – Sep 10

1871–2026 · 2026 highlighted · trend +0.17" per decade (wetter since 1871)

Warmest Jun 12 – Sep 10 on Record

# Year Avg Temp
1 2012 74.4°F
2 1921 74.1°F
3 1995 74.0°F
4 1983 74.0°F
5 1931 73.6°F
6 1988 73.6°F
7 2016 73.6°F
8 1991 73.5°F
9 1955 73.5°F
10 2022 73.4°F

Coolest Jun 12 – Sep 10 on Record

# Year Avg Temp
1 1885 64.8°F
2 1915 64.8°F
3 1875 65.0°F
4 1883 65.4°F
5 1891 65.8°F
6 1924 65.8°F
7 1950 66.0°F
8 1992 66.3°F
9 1877 66.4°F
10 1884 66.5°F

Wettest Jun 12 – Sep 10 on Record

# Year Total
1 1986 21.05"
2 2010 18.09"
3 1997 17.15"
4 1885 16.91"
5 1876 16.80"
6 2020 16.75"
7 1987 15.70"
8 2018 15.69"
9 2000 15.50"
10 2025 15.12"

Driest Jun 12 – Sep 10 on Record

# Year Total
1 1918 3.28"
2 2003 3.61"
3 1911 4.27"
4 1958 4.29"
5 1930 4.70"
6 1973 4.80"
7 2005 4.91"
8 1901 4.94"
9 1878 5.22"
10 1946 5.34"
About this data. Pick any start and end date and this becomes the same kind of review as the Month and Fall tabs, just for exactly the window you asked for — the generalized version of the same engine, evaluated across every year on record. Average temperature is the mean of each day's (high + low) / 2; precipitation is the sum of daily totals. A year missing more than about a fifth of the window's days is excluded from the temperature ranking; any missing day excludes a year from the precipitation ranking, since an unreported day is unreported rain. Ranges that cross from December into January aren't supported yet. Normals are the 1991–2020 mean for the same window.
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