Wausau, WI

Wisconsin · Records since 1895–2026

🌙 61°F
Currently in Wausau
As of 8:45 PM CDT

Records for September 26

🔥 Record High

84°F

September 26, 1908

+18° from 66° normal

❄ Record Low

28°F

September 26, 1939

-16° from 44° normal
🌞 Normal high: 66°F 🌑 Normal low: 44°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 26

# Temp Date
🏆 84°F September 26, 1908
2 82°F September 26, 1979
3 82°F September 26, 1923
4 81°F September 26, 2008
5 81°F September 26, 1938
6 80°F September 26, 1986
7 80°F September 26, 1974
8 79°F September 26, 1998
9 78°F September 26, 2024
10 78°F September 26, 1987

Top 5 Record Lows — September 26

# Temp Date
🥶 28°F September 26, 1939
2 28°F September 26, 1926
3 30°F September 26, 1966
4 30°F September 26, 1965
5 30°F September 26, 1942
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

155 of 267 days with data were above the 1991–2020 normal high for their date.

Precipitation, Year to Date

32.22"
2026 YTD
Normal: 26.75"
+5.47"
3.48"
September so far
September normal: 3.83"
-0.35"
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 5.47" ahead of the normal pace

Period Review — Aug 26 – Sep 25, 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)
64.8°F
Average temperature
18th-warmest of 128
+2.8°
vs. average
Normal: 62.0°F (1991–2020)

Average Temperature by Year — Aug 26 – Sep 25

1895–2026 · 2026 highlighted · trend +0.14° per decade (warming since 1895)

Precipitation by Year — Aug 26 – Sep 25

1896–2025 · 2026 highlighted · trend +0.05" per decade (wetter since 1896)

Warmest Aug 26 – Sep 25 on Record

# Year Avg Temp
1 1908 69.2°F
2 1937 67.4°F
3 1998 66.1°F
4 1936 66.0°F
5 1939 66.0°F
6 2015 65.6°F
7 1895 65.6°F
8 1931 65.6°F
9 2022 65.6°F
10 1906 65.5°F

Coolest Aug 26 – Sep 25 on Record

# Year Avg Temp
1 1974 54.4°F
2 1918 54.5°F
3 1896 55.6°F
4 1965 55.7°F
5 1943 55.7°F
6 1975 56.2°F
7 1916 57.0°F
8 1993 57.0°F
9 1924 57.1°F
10 1986 57.4°F
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.
← Back to all stations