Eau Claire, WI

Wisconsin · Records since 1893–2026

☀️ 83°F Feels like 78°
Currently in Eau Claire
As of 1:30 PM CDT

Records for September 11

🔥 Record High

98°F

September 11, 1931

+24° from 74° normal

❄ Record Low

31°F

September 11, 1917

-20° from 51° normal
🌞 Normal high: 74°F 🌑 Normal low: 51°F 1991–2020 normals

All-Time Records — Eau Claire

🔥
111°F
Hottest Day Ever
Jul 14, 1936
❄
-45°F
Coldest Day Ever
Jan 30, 1951
🌧
5.98"
Wettest Day Ever
Sep 10, 2000
☃
22.0"
Most Snow in One Day
Dec 11, 2010

First & Last Dates — Eau Claire

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)
187 days
Longest growing season
1914
102 days
Shortest growing season
1903
144 days
Normal growing season
1991–2020 average

Top 10 Record Highs — September 11

# Temp Date
🏆 98°F September 11, 1931
2 96°F September 11, 1895
3 91°F September 11, 1998
4 91°F September 11, 1948
5 90°F September 11, 2012
6 90°F September 11, 2005
7 89°F September 11, 1978
8 89°F September 11, 1942
9 89°F September 11, 1908
10 89°F September 11, 1906

Top 5 Record Lows — September 11

# Temp Date
🥶 31°F September 11, 1917
2 32°F September 11, 1898
3 35°F September 11, 1959
4 35°F September 11, 1955
5 37°F September 11, 2020
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 1893–2026. Climate normals represent the 1991–2020 average.

Heat Wave Summary — Eau Claire

threshold: 91°F (90th percentile of historical Jun–Aug highs)
4.4
Avg heat wave length
days (historical)
97°
Avg peak temp
during heat waves
2
Dangerous nights 2026
Overnights ≥ 70°F
1
Heat waves 2026
so far

Days ≥ 90°F Per Year

1893–2026
11
2026 so far
14
Avg/year 1970–2025
10
Avg/year (last 10 complete)
45
Most in a year (1988)

Average Daily High by Decade

Full year · complete decades only

Longest Heat Waves — Eau Claire

# Dates Days Peak Avg High Avg Overnight Low
🏆 Jul 5, 1936 – Jul 18, 1936 14 111°F (Jul 13) 104°F 72°F
2 Jul 12, 1932 – Jul 21, 1932 10 102°F (Jul 20) 97°F 70°F
3 Jul 21, 1941 – Jul 30, 1941 10 101°F (Jul 23) 97°F 70°F
4 Jun 16, 1910 – Jun 25, 1910 10 97°F (Jun 23) 93°F 63°F
5 May 28, 1934 – Jun 5, 1934 9 107°F (May 31) 96°F 66°F
6 Jul 26, 1988 – Aug 3, 1988 9 104°F (Aug 1) 99°F 66°F
7 Jul 5, 1937 – Jul 13, 1937 9 101°F (Jul 7) 97°F 70°F
8 Aug 25, 1937 – Sep 2, 1937 9 100°F (Sep 2) 95°F 68°F
9 Aug 1, 1941 – Aug 9, 1941 9 96°F (Aug 3) 93°F 65°F
10 Jul 2, 1948 – Jul 9, 1948 8 102°F (Jul 8) 97°F 68°F

Heat Waves Per Year

Warm Summer Nights (Jun–Aug)

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

55
2026 total
above-normal nights
45.9
Avg / summer
1970–2020
69
Most in a summer
1921

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 (1893–2026)

Blue = above average · tan = below average · gold = 2026 (partial)
Since 1893, annual totals have trended +0.16" per decade, about +2.1" 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 Eau Claire is tracking against normal, year to date

Daily High Temperature vs Normal

Above normal Below normal

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

Precipitation, Year to Date

21.22"
2026 YTD
Normal: 24.95"
-3.73"
1.27"
September so far
September normal: 3.65"
-2.38"
3
2026 heavy rain days
Days with ≥ 1.0"

Accumulation vs. Normal

Running total since Jan 1 against the normal pace for the same date · Eau Claire is 3.73" behind the normal pace

Period Review — Sep 3 – Sep 10, 2026

Any window, evaluated against every other year on record — 8 days

Quick picks: Last 7 days Last 30 days Last 90 days This month
Seasons: Spring (Mar–May) Summer (Jun–Aug) Fall (Sep–Nov)
72.4°F
Average temperature
11th-warmest of 132
+7.9°
vs. average
Normal: 64.4°F (1991–2020)
1.02"
Precipitation
42nd-wettest of 132
+0.05"
vs. average
Normal: 0.97" · 105% of normal

Average Temperature by Year — Sep 3 – Sep 10

1893–2026 · 2026 highlighted · trend -0.08° per decade (cooling since 1893)

Precipitation by Year — Sep 3 – Sep 10

1893–2026 · 2026 highlighted · trend -0.01" per decade (drier since 1893)

Warmest Sep 3 – Sep 10 on Record

# Year Avg Temp
1 1933 77.0°F
2 1947 76.9°F
3 1978 76.4°F
4 1922 76.2°F
5 1912 74.1°F
6 1931 74.0°F
7 2002 73.1°F
8 1925 73.0°F
9 1919 72.8°F
10 1936 72.6°F

Coolest Sep 3 – Sep 10 on Record

# Year Avg Temp
1 2025 55.2°F
2 1956 56.1°F
3 1993 56.1°F
4 2020 56.2°F
5 1924 56.3°F
6 1918 56.5°F
7 2008 56.5°F
8 1914 57.4°F
9 1968 57.7°F
10 1986 57.8°F

Wettest Sep 3 – Sep 10 on Record

# Year Total
1 2000 6.64"
2 1938 6.36"
3 1946 5.11"
4 1964 4.76"
5 1927 3.85"
6 1975 3.80"
7 2014 3.78"
8 2018 3.57"
9 1986 3.56"
10 1968 3.43"

Driest Sep 3 – Sep 10 on Record

# Year Total
1 2009 0.00"
2 2003 0.00"
3 1998 0.00"
4 1990 0.00"
5 1979 0.00"
6 1967 0.00"
7 1963 0.00"
8 1955 0.00"
9 1952 0.00"
10 1950 0.00"
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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