Madison, WI

Wisconsin · Records since 1869–2026

☀️ 76°F
Currently in Madison
As of 1:00 PM CDT

Records for September 11

🔥 Record High

93°F

September 11, 1931

+18° from 75° normal

❄ Record Low

34°F

September 11, 1955

-19° from 53° normal
🌞 Normal high: 75°F 🌑 Normal low: 53°F 1991–2020 normals

All-Time Records — Madison

🔥
107°F
Hottest Day Ever
Jul 14, 1936
❄
-37°F
Coldest Day Ever
Jan 30, 1951
🌧
4.96"
Wettest Day Ever
Aug 8, 1906
☃
17.3"
Most Snow in One Day
Dec 3, 1990

First & Last Dates — Madison

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)
210 days
Longest growing season
1878
106 days
Shortest growing season
1964
156 days
Normal growing season
1991–2020 average

Top 10 Record Highs — September 11

# Temp Date
🏆 93°F September 11, 1931
2 91°F September 11, 2005
3 90°F September 11, 1978
4 90°F September 11, 1948
5 90°F September 11, 1895
6 89°F September 11, 1952
7 89°F September 11, 1906
8 88°F September 11, 1908
9 87°F September 11, 1979
10 87°F September 11, 1976

Top 5 Record Lows — September 11

# Temp Date
🥶 34°F September 11, 1955
2 35°F September 11, 1967
3 37°F September 11, 1993
4 37°F September 11, 1959
5 38°F September 11, 1958
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 1869–2026. Climate normals represent the 1991–2020 average.

Heat Wave Summary — Madison

threshold: 89°F (90th percentile of historical Jun–Aug highs)
4.2
Avg heat wave length
days (historical)
94°
Avg peak temp
during heat waves
9
Dangerous nights 2026
Overnights ≥ 70°F
2
Heat waves 2026
so far

Days ≥ 90°F Per Year

1870–2026
10
2026 so far
10
Avg/year 1970–2025
9
Avg/year (last 10 complete)
40
Most in a year (1955)

Average Daily High by Decade

Full year · complete decades only

Longest Heat Waves — Madison

# Dates Days Peak Avg High Avg Overnight Low
🏆 Jul 9, 1901 – Jul 27, 1901 19 104°F (Jul 21) 95°F 69°F
2 Jul 6, 1936 – Jul 18, 1936 13 107°F (Jul 14) 99°F 74°F
3 Jun 27, 2012 – Jul 9, 2012 13 104°F (Jul 5) 96°F 68°F
4 Aug 25, 1953 – Sep 3, 1953 10 100°F (Aug 31) 96°F 66°F
5 Jul 27, 1988 – Aug 4, 1988 9 101°F (Aug 1) 95°F 68°F
6 Jun 30, 1955 – Jul 8, 1955 9 98°F (Jul 4) 93°F 68°F
7 Jul 2, 1989 – Jul 10, 1989 9 97°F (Jul 9) 92°F 63°F
8 Jun 17, 1995 – Jun 25, 1995 9 96°F (Jun 20) 93°F 65°F
9 Jun 29, 1921 – Jul 7, 1921 9 93°F (Jul 4) 91°F 71°F
10 Aug 14, 1955 – Aug 21, 1955 8 101°F (Aug 21) 96°F 65°F

Heat Waves Per Year

Warm Summer Nights (Jun–Aug)

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

46
2026 total
above-normal nights
39.3
Avg / summer
1970–2020
86
Most in a summer
1874

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 (1869–2026)

Blue = above average · tan = below average · gold = 2026 (partial)
Since 1869, annual totals have trended +0.33" per decade, about +5.1" 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 Madison is tracking against normal, year to date

Daily High Temperature vs Normal

Above normal Below normal

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

Precipitation, Year to Date

28.03"
2026 YTD
Normal: 28.25"
-0.22"
0.46"
September so far
September normal: 3.43"
-2.97"
8
2026 heavy rain days
Days with ≥ 1.0"

Accumulation vs. Normal

Running total since Jan 1 against the normal pace for the same date · Madison is 0.22" behind the normal pace

Period Review — Aug 11 – Sep 10, 2026

Any window, evaluated against every other year on record — 31 days

Quick picks: Last 7 days Last 30 days Last 90 days This month
Seasons: Spring (Mar–May) Summer (Jun–Aug) Fall (Sep–Nov)
71.1°F
Average temperature
26th-warmest of 158
+2.9°
vs. average
Normal: 68.2°F (1991–2020)
2.59"
Precipitation
70th-driest of 158
-1.12"
vs. average
Normal: 3.71" · 70% of normal

Average Temperature by Year — Aug 11 – Sep 10

1869–2026 · 2026 highlighted

Precipitation by Year — Aug 11 – Sep 10

1869–2026 · 2026 highlighted · trend +0.01" per decade (wetter since 1869)

Warmest Aug 11 – Sep 10 on Record

# Year Avg Temp
1 1947 75.6°F
2 1959 74.3°F
3 1937 73.7°F
4 1922 73.4°F
5 1900 73.3°F
6 1881 73.0°F
7 1995 72.9°F
8 1948 72.3°F
9 1872 72.1°F
10 1936 72.1°F

Coolest Aug 11 – Sep 10 on Record

# Year Avg Temp
1 1967 59.5°F
2 1885 60.7°F
3 1977 62.5°F
4 1986 62.6°F
5 1997 63.3°F
6 1982 63.6°F
7 2017 63.7°F
8 1992 63.9°F
9 1890 64.0°F
10 1924 64.4°F

Wettest Aug 11 – Sep 10 on Record

# Year Total
1 2007 13.17"
2 2018 11.61"
3 2016 9.34"
4 1941 8.75"
5 1980 8.40"
6 1965 8.29"
7 1938 7.48"
8 1981 7.31"
9 1910 7.03"
10 1936 6.82"

Driest Aug 11 – Sep 10 on Record

# Year Total
1 1955 0.55"
2 1991 0.56"
3 1996 0.66"
4 1969 0.66"
5 2003 0.71"
6 1933 0.79"
7 1961 0.85"
8 1874 0.85"
9 1888 0.87"
10 1935 0.88"
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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