Oklahoma City, OK

Oklahoma · Records since 1890–2026

☀️ 90°F Feels like 98°
Currently in Oklahoma City
As of 1:00 PM CDT

Records for September 11

🔥 Record High

105°F

September 11, 2000

+19° from 86° normal

❄ Record Low

48°F

September 11, 1940

-15° from 63° normal
🌞 Normal high: 86°F 🌑 Normal low: 63°F 1991–2020 normals

All-Time Records — Oklahoma City

🔥
113°F
Hottest Day Ever
Aug 3, 2012
❄
-17°F
Coldest Day Ever
Feb 12, 1899
🌧
7.62"
Wettest Day Ever
Jun 14, 2010
☃
13.5"
Most Snow in One Day
Dec 24, 2009

First & Last Dates — Oklahoma City

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)
261 days
Longest growing season
1998
177 days
Shortest growing season
2013
220 days
Normal growing season
1991–2020 average

Top 10 Record Highs — September 11

# Temp Date
🏆 105°F September 11, 2000
2 100°F September 11, 1909
3 98°F September 11, 1963
4 98°F September 11, 1930
5 97°F September 11, 1956
6 97°F September 11, 1936
7 96°F September 11, 1971
8 96°F September 11, 1953
9 96°F September 11, 1911
10 95°F September 11, 1980

Top 5 Record Lows — September 11

# Temp Date
🥶 48°F September 11, 1940
2 49°F September 11, 1959
3 50°F September 11, 1922
4 50°F September 11, 1902
5 50°F September 11, 1896
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 1890–2026. Climate normals represent the 1991–2020 average.

Heat Wave Summary — Oklahoma City

threshold: 100°F (90th percentile of historical Jun–Aug highs)
5.3
Avg heat wave length
days (historical)
104°
Avg peak temp
during heat waves
80
Dangerous nights 2026
Overnights ≥ 70°F
7
Heat waves 2026
so far

Days ≥ 90°F Per Year

1891–2026
95
2026 so far
70
Avg/year 1970–2025
74
Avg/year (last 10 complete)
113
Most in a year (1998)

Average Daily High by Decade

Full year · complete decades only

Longest Heat Waves — Oklahoma City

# Dates Days Peak Avg High Avg Overnight Low
🏆 Aug 4, 1936 – Aug 25, 1936 22 113°F (Aug 11) 104°F 79°F
2 Jul 1, 1966 – Jul 19, 1966 19 108°F (Jul 19) 102°F 72°F
3 Jul 18, 2012 – Aug 4, 2012 18 113°F (Aug 3) 105°F 78°F
4 Aug 19, 2000 – Sep 4, 2000 17 108°F (Sep 2) 103°F 72°F
5 Aug 3, 1956 – Aug 18, 1956 16 107°F (Aug 15) 104°F 75°F
6 Jul 18, 1998 – Aug 2, 1998 16 107°F (Jul 26) 104°F 75°F
7 Aug 1, 1937 – Aug 14, 1937 14 107°F (Aug 10) 103°F 78°F
8 Jul 7, 1980 – Jul 20, 1980 14 106°F (Jul 16) 104°F 75°F
9 Jun 29, 2011 – Jul 11, 2011 13 110°F (Jul 9) 104°F 74°F
10 Jul 26, 2011 – Aug 6, 2011 12 110°F (Aug 5) 106°F 78°F

Heat Waves Per Year

Warm Summer Nights (Jun–Aug)

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

66
2026 total
above-normal nights
50.8
Avg / summer
1970–2020
82
Most in a summer
1980

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 (1890–2026)

Blue = above average · tan = below average · gold = 2026 (partial)
Since 1890, annual totals have trended +0.58" per decade, about +7.9" 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 Oklahoma City is tracking against normal, year to date

Daily High Temperature vs Normal

Above normal Below normal

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

Precipitation, Year to Date

14.54"
2026 YTD
Normal: 27.17"
-12.63"
0.10"
September so far
September normal: 3.72"
-3.62"
4
2026 heavy rain days
Days with ≥ 1.0"

Accumulation vs. Normal

Running total since Jan 1 against the normal pace for the same date · Oklahoma City is 12.63" behind 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)
88.2°F
Average temperature
2nd-warmest of 136
+8.5°
vs. average
Normal: 79.7°F (1991–2020)
0.17"
Precipitation
6th-driest of 136
-3.78"
vs. average
Normal: 3.95" · 4% of normal

Average Temperature by Year — Aug 11 – Sep 10

1891–2026 · 2026 highlighted · trend +0.06° per decade (warming since 1891)

Precipitation by Year — Aug 11 – Sep 10

1891–2026 · 2026 highlighted · trend +0.04" per decade (wetter since 1891)

Warmest Aug 11 – Sep 10 on Record

# Year Avg Temp
1 1936 88.6°F
2 2026 88.2°F
3 2000 85.8°F
4 1947 85.5°F
5 1998 85.5°F
6 1922 85.2°F
7 1954 85.1°F
8 1980 85.0°F
9 1938 84.9°F
10 1939 84.0°F

Coolest Aug 11 – Sep 10 on Record

# Year Avg Temp
1 1915 73.7°F
2 1891 73.8°F
3 1920 73.8°F
4 1892 73.9°F
5 1992 73.9°F
6 1950 74.3°F
7 1893 74.5°F
8 2004 74.6°F
9 1967 74.8°F
10 2017 75.1°F

Wettest Aug 11 – Sep 10 on Record

# Year Total
1 1934 12.73"
2 2018 11.65"
3 2007 11.06"
4 2008 10.10"
5 1991 9.82"
6 1920 7.33"
7 1966 7.23"
8 1942 6.65"
9 2024 6.59"
10 2019 6.54"

Driest Aug 11 – Sep 10 on Record

# Year Total
1 2000 0.00"
2 1998 0.00"
3 1982 0.00"
4 1912 0.00"
5 1995 0.10"
6 2026 0.17"
7 1936 0.23"
8 2023 0.25"
9 1948 0.27"
10 1952 0.47"
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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