Cincinnati, OH

Ohio · Records since 1872–2026

⛅ 81°F Feels like 88°
Currently in Cincinnati
As of 2:30 PM EDT

Records for September 11

🔥 Record High

96°F

September 11, 1933

+15° from 81° normal

❄ Record Low

40°F

September 11, 1993

-19° from 59° normal
🌞 Normal high: 81°F 🌑 Normal low: 59°F 1991–2020 normals

All-Time Records — Cincinnati

🔥
108°F
Hottest Day Ever
Jul 22, 1934
❄
-25°F
Coldest Day Ever
Jan 18, 1977
🌧
5.21"
Wettest Day Ever
Mar 9, 1964
☃
11.8"
Most Snow in One Day
Feb 4, 1998

First & Last Dates — Cincinnati

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)
250 days
Longest growing season
1946
137 days
Shortest growing season
1925
181 days
Normal growing season
1991–2020 average

Top 10 Record Highs — September 11

# Temp Date
🏆 96°F September 11, 1933
2 94°F September 11, 1931
3 94°F September 11, 1925
4 94°F September 11, 1908
5 94°F September 11, 1897
6 94°F September 11, 1895
7 93°F September 11, 1983
8 93°F September 11, 1936
9 93°F September 11, 1904
10 93°F September 11, 1896

Top 5 Record Lows — September 11

# Temp Date
🥶 40°F September 11, 1993
2 40°F September 11, 1917
3 44°F September 11, 1976
4 45°F September 11, 1969
5 45°F September 11, 1935
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 — Cincinnati

threshold: 92°F (90th percentile of historical Jun–Aug highs)
4.5
Avg heat wave length
days (historical)
96°
Avg peak temp
during heat waves
35
Dangerous nights 2026
Overnights ≥ 70°F
2
Heat waves 2026
so far

Days ≥ 90°F Per Year

1872–2026
20
2026 so far
25
Avg/year 1970–2025
25
Avg/year (last 10 complete)
64
Most in a year (1936)

Average Daily High by Decade

Full year · complete decades only

Longest Heat Waves — Cincinnati

# Dates Days Peak Avg High Avg Overnight Low
🏆 Jul 12, 1983 – Jul 24, 1983 13 101°F (Jul 23) 96°F 72°F
2 Jun 22, 1966 – Jul 4, 1966 13 97°F (Jul 2) 94°F 68°F
3 Jul 3, 1881 – Jul 14, 1881 12 104°F (Jul 10) 98°F 78°F
4 Aug 23, 1953 – Sep 3, 1953 12 102°F (Sep 1) 97°F 66°F
5 Jul 20, 1940 – Jul 31, 1940 12 101°F (Jul 30) 96°F 74°F
6 Jul 20, 1901 – Jul 30, 1901 11 105°F (Jul 22) 98°F 74°F
7 Jun 28, 2012 – Jul 8, 2012 11 104°F (Jul 6) 99°F 70°F
8 Aug 4, 1918 – Aug 14, 1918 11 101°F (Aug 6) 96°F 75°F
9 Jul 18, 1934 – Jul 27, 1934 10 108°F (Jul 21) 102°F 74°F
10 Jul 6, 1936 – Jul 15, 1936 10 106°F (Jul 14) 102°F 74°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
45.5
Avg / summer
1970–2020
78
Most in a summer
1872

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 (1871–2026)

Blue = above average · tan = below average · gold = 2026 (partial)
Since 1871, annual totals have trended +0.55" per decade, about +8.5" 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 Cincinnati is tracking against normal, year to date

Daily High Temperature vs Normal

Above normal Below normal

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

Precipitation, Year to Date

34.07"
2026 YTD
Normal: 32.83"
+1.24"
0.34"
September so far
September normal: 3.11"
-2.77"
9
2026 heavy rain days
Days with ≥ 1.0"

Accumulation vs. Normal

Running total since Jan 1 against the normal pace for the same date · Cincinnati is 1.24" ahead of 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)
76.5°F
Average temperature
21st-warmest of 155
+2.7°
vs. average
Normal: 73.8°F (1991–2020)
2.20"
Precipitation
61st-driest of 155
-1.03"
vs. average
Normal: 3.23" · 68% of normal

Average Temperature by Year — Aug 11 – Sep 10

1872–2026 · 2026 highlighted

Precipitation by Year — Aug 11 – Sep 10

1871–2026 · 2026 highlighted

Warmest Aug 11 – Sep 10 on Record

# Year Avg Temp
1 1900 80.3°F
2 1881 80.1°F
3 2007 80.0°F
4 1936 79.2°F
5 1947 78.9°F
6 1959 78.9°F
7 1872 78.5°F
8 1899 78.0°F
9 1913 78.0°F
10 1912 77.7°F

Coolest Aug 11 – Sep 10 on Record

# Year Avg Temp
1 1915 67.6°F
2 1963 68.5°F
3 1891 68.8°F
4 1885 68.9°F
5 1967 68.9°F
6 1946 69.0°F
7 1982 69.2°F
8 1950 69.2°F
9 1992 69.3°F
10 1924 69.5°F

Wettest Aug 11 – Sep 10 on Record

# Year Total
1 2018 12.59"
2 1879 9.75"
3 1890 7.66"
4 1915 7.24"
5 1926 7.21"
6 1888 7.13"
7 1950 6.80"
8 1922 6.62"
9 2016 6.50"
10 2012 6.48"

Driest Aug 11 – Sep 10 on Record

# Year Total
1 1904 0.43"
2 2007 0.53"
3 1875 0.64"
4 1939 0.66"
5 1953 0.69"
6 1967 0.74"
7 2010 0.79"
8 2008 0.81"
9 1893 0.84"
10 1901 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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