La Crosse, WI

Wisconsin · Records since 1872–2026

☀️ 77°F
Currently in La Crosse
As of 1:30 PM CDT

Records for September 11

🔥 Record High

97°F

September 11, 1895

+19° from 78° normal

❄ Record Low

35°F

September 11, 1898

-21° from 56° normal
🌞 Normal high: 78°F 🌑 Normal low: 56°F 1991–2020 normals

All-Time Records — La Crosse

🔥
108°F
Hottest Day Ever
Jul 13, 1995
❄
-43°F
Coldest Day Ever
Jan 18, 1873
🌧
5.59"
Wettest Day Ever
Aug 7, 2021
☃
16.7"
Most Snow in One Day
Dec 7, 1927

First & Last Dates — La Crosse

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)
211 days
Longest growing season
1878
121 days
Shortest growing season
1929
169 days
Normal growing season
1991–2020 average

Top 10 Record Highs — September 11

# Temp Date
🏆 97°F September 11, 1895
2 96°F September 11, 1931
3 93°F September 11, 1978
4 92°F September 11, 2005
5 92°F September 11, 1998
6 92°F September 11, 1873
7 91°F September 11, 1906
8 90°F September 11, 2012
9 90°F September 11, 1948
10 90°F September 11, 1908

Top 5 Record Lows — September 11

# Temp Date
🥶 35°F September 11, 1898
2 36°F September 11, 1917
3 39°F September 11, 1959
4 39°F September 11, 1955
5 40°F September 11, 1965
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 1872–2026. Climate normals represent the 1991–2020 average.

Heat Wave Summary — La Crosse

threshold: 91°F (90th percentile of historical Jun–Aug highs)
4.3
Avg heat wave length
days (historical)
97°
Avg peak temp
during heat waves
15
Dangerous nights 2026
Overnights ≥ 70°F
1
Heat waves 2026
so far

Days ≥ 90°F Per Year

1873–2026
14
2026 so far
15
Avg/year 1970–2025
20
Avg/year (last 10 complete)
46
Most in a year (1988)

Average Daily High by Decade

Full year · complete decades only

Longest Heat Waves — La Crosse

# Dates Days Peak Avg High Avg Overnight Low
🏆 Jul 5, 1936 – Jul 18, 1936 14 108°F (Jul 14) 101°F 72°F
2 Jul 13, 1901 – Jul 25, 1901 13 104°F (Jul 21) 97°F 70°F
3 Jul 26, 1955 – Aug 5, 1955 11 101°F (Jul 26) 95°F 75°F
4 Jul 10, 1980 – Jul 19, 1980 10 100°F (Jul 10) 96°F 70°F
5 Jul 30, 2001 – Aug 8, 2001 10 100°F (Jul 31) 95°F 73°F
6 Jun 16, 1995 – Jun 25, 1995 10 99°F (Jun 21) 95°F 69°F
7 Jun 16, 1910 – Jun 25, 1910 10 96°F (Jun 23) 94°F 64°F
8 Jul 2, 1989 – Jul 10, 1989 9 100°F (Jul 6) 95°F 66°F
9 Jun 3, 2021 – Jun 11, 2021 9 99°F (Jun 5) 96°F 71°F
10 Jul 27, 1988 – Aug 3, 1988 8 105°F (Aug 1) 99°F 71°F

Heat Waves Per Year

Warm Summer Nights (Jun–Aug)

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

52
2026 total
above-normal nights
37.2
Avg / summer
1970–2020
61
Most in a summer
2018

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 (1872–2026)

Blue = above average · tan = below average · gold = 2026 (partial)
Since 1872, annual totals have trended +0.32" per decade, about +5.0" 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 La Crosse is tracking against normal, year to date

Daily High Temperature vs Normal

Above normal Below normal

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

Precipitation, Year to Date

26.62"
2026 YTD
Normal: 27.00"
-0.38"
1.59"
September so far
September normal: 3.63"
-2.04"
5
2026 heavy rain days
Days with ≥ 1.0"

Accumulation vs. Normal

Running total since Jan 1 against the normal pace for the same date · La Crosse is 0.38" 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)
74.2°F
Average temperature
13th-warmest of 153
+6.8°
vs. average
Normal: 67.4°F (1991–2020)
0.75"
Precipitation
72nd-wettest of 154
-0.12"
vs. average
Normal: 0.87" · 86% of normal

Average Temperature by Year — Sep 3 – Sep 10

1873–2026 · 2026 highlighted · trend +0.19° per decade (warming since 1873)

Precipitation by Year — Sep 3 – Sep 10

1873–2026 · 2026 highlighted · trend -0.04" per decade (drier since 1873)

Warmest Sep 3 – Sep 10 on Record

# Year Avg Temp
1 1978 80.1°F
2 1947 77.3°F
3 1912 76.0°F
4 1933 75.6°F
5 1931 75.5°F
6 1884 75.3°F
7 1960 75.3°F
8 1922 75.1°F
9 2015 75.1°F
10 1990 74.8°F

Coolest Sep 3 – Sep 10 on Record

# Year Avg Temp
1 1885 54.9°F
2 1883 55.1°F
3 1924 55.3°F
4 1917 57.0°F
5 1918 57.2°F
6 1879 57.9°F
7 1935 58.2°F
8 1914 58.9°F
9 2025 58.9°F
10 2008 58.9°F

Wettest Sep 3 – Sep 10 on Record

# Year Total
1 1884 6.93"
2 1901 5.22"
3 1938 5.17"
4 1946 4.90"
5 2016 4.62"
6 1964 4.61"
7 2001 4.33"
8 1941 4.25"
9 1980 3.78"
10 1881 3.77"

Driest Sep 3 – Sep 10 on Record

# Year Total
1 2023 0.00"
2 2013 0.00"
3 2009 0.00"
4 2003 0.00"
5 1998 0.00"
6 1978 0.00"
7 1967 0.00"
8 1966 0.00"
9 1963 0.00"
10 1960 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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