Wausau, WI

Wisconsin · Records since 1895–2026

☀️ 79°F
Currently in Wausau
As of 1:30 PM CDT

Records for September 11

🔥 Record High

97°F

September 11, 1906

+25° from 72° normal

❄ Record Low

30°F

September 11, 1943

-20° from 50° normal
🌞 Normal high: 72°F 🌑 Normal low: 50°F 1991–2020 normals

All-Time Records — Wausau

🔥
107°F
Hottest Day Ever
Jul 13, 1936
❄
-40°F
Coldest Day Ever
Jan 30, 1951
🌧
5.16"
Wettest Day Ever
Aug 20, 1926
☃
23.4"
Most Snow in One Day
Mar 15, 2026

First & Last Dates — Wausau

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)
183 days
Longest growing season
1962
72 days
Shortest growing season
1943
150 days
Normal growing season
1991–2020 average

Top 10 Record Highs — September 11

# Temp Date
🏆 97°F September 11, 1906
2 94°F September 11, 1931
3 90°F September 11, 1998
4 89°F September 11, 2005
5 88°F September 11, 1952
6 87°F September 11, 2003
7 86°F September 11, 1976
8 85°F September 11, 2012
9 85°F September 11, 1994
10 85°F September 11, 1978

Top 5 Record Lows — September 11

# Temp Date
🥶 30°F September 11, 1943
2 32°F September 11, 1917
3 34°F September 11, 1955
4 35°F September 11, 2020
5 37°F September 11, 1993
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 1895–2026. Climate normals represent the 1991–2020 average.

Heat Wave Summary — Wausau

threshold: 88°F (90th percentile of historical Jun–Aug highs)
4.2
Avg heat wave length
days (historical)
94°
Avg peak temp
during heat waves
3
Dangerous nights 2026
Overnights ≥ 70°F
1
Heat waves 2026
so far

Days ≥ 90°F Per Year

1895–2026
7
2026 so far
7
Avg/year 1970–2025
5
Avg/year (last 10 complete)
29
Most in a year (1988)

Average Daily High by Decade

Full year · complete decades only

Longest Heat Waves — Wausau

# Dates Days Peak Avg High Avg Overnight Low
🏆 Jul 6, 1936 – Jul 18, 1936 13 107°F (Jul 13) 99°F 70°F
2 Jul 2, 1937 – Jul 12, 1937 11 97°F (Jul 11) 92°F 66°F
3 Jul 12, 1932 – Jul 21, 1932 10 100°F (Jul 20) 93°F 67°F
4 Jul 22, 1941 – Jul 31, 1941 10 96°F (Jul 24) 93°F 71°F
5 Jun 28, 1921 – Jul 7, 1921 10 93°F (Jul 5) 91°F 67°F
6 Jun 25, 1910 – Jul 3, 1910 9 98°F (Jun 29) 93°F 60°F
7 Jun 17, 1995 – Jun 25, 1995 9 96°F (Jun 21) 93°F 67°F
8 Aug 26, 1937 – Sep 3, 1937 9 95°F (Aug 27) 92°F 67°F
9 Jun 24, 1933 – Jul 1, 1933 8 100°F (Jun 27) 94°F 68°F
10 Jul 10, 2005 – Jul 17, 2005 8 95°F (Jul 17) 92°F 64°F

Heat Waves Per Year

Warm Summer Nights (Jun–Aug)

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

58
2026 total
above-normal nights
46.2
Avg / summer
1970–2020
68
Most in a summer
1995

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 (1895–2026)

Blue = above average · tan = below average · gold = 2026 (partial)
Since 1895, annual totals have trended +0.46" per decade, about +5.9" 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 Wausau 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

30.59"
2026 YTD
Normal: 24.97"
+5.62"
1.85"
September so far
September normal: 3.83"
-1.98"
7
2026 heavy rain days
Days with ≥ 1.0"

Accumulation vs. Normal

Running total since Jan 1 against the normal pace for the same date · Wausau is 5.62" 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)
70.0°F
Average temperature
15th-warmest of 125
+2.0°
vs. average
Normal: 68.0°F (1991–2020)
7.20"
Precipitation
13th-driest of 112
-5.09"
vs. average
Normal: 12.29" · 59% of normal

Average Temperature by Year — Jun 12 – Sep 10

1895–2026 · 2026 highlighted · trend +0.15° per decade (warming since 1895)

Precipitation by Year — Jun 12 – Sep 10

1896–2026 · 2026 highlighted · trend +0.25" per decade (wetter since 1896)

Warmest Jun 12 – Sep 10 on Record

# Year Avg Temp
1 1937 72.8°F
2 1983 72.2°F
3 1936 72.1°F
4 1921 71.7°F
5 1995 71.1°F
6 1933 71.1°F
7 2012 71.0°F
8 2022 70.7°F
9 2021 70.6°F
10 1988 70.6°F

Coolest Jun 12 – Sep 10 on Record

# Year Avg Temp
1 1992 62.0°F
2 1915 62.3°F
3 1917 62.7°F
4 1924 63.1°F
5 1950 63.3°F
6 1904 63.7°F
7 1927 64.1°F
8 1951 64.3°F
9 1967 64.4°F
10 2004 64.6°F

Wettest Jun 12 – Sep 10 on Record

# Year Total
1 2021 23.42"
2 1938 23.05"
3 1995 20.93"
4 1968 20.19"
5 1978 18.47"
6 2010 18.41"
7 2024 18.21"
8 2014 18.10"
9 1926 17.88"
10 2018 17.51"

Driest Jun 12 – Sep 10 on Record

# Year Total
1 2003 4.97"
2 1932 5.53"
3 1976 5.65"
4 1933 5.72"
5 2008 5.94"
6 1973 6.32"
7 1921 6.55"
8 2004 6.65"
9 2005 6.71"
10 1937 7.03"
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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