Tulsa, OK

Oklahoma · Records since 1905–2026

☀️ 90°F Feels like 98°
Currently in Tulsa
As of 1:30 PM CDT

Records for September 11

🔥 Record High

103°F

September 11, 1909

+17° from 86° normal

❄ Record Low

45°F

September 11, 1940

-20° from 65° normal
🌞 Normal high: 86°F 🌑 Normal low: 65°F 1991–2020 normals

All-Time Records — Tulsa

🔥
115°F
Hottest Day Ever
Aug 10, 1936
❄
-16°F
Coldest Day Ever
Jan 22, 1930
🌧
7.54"
Wettest Day Ever
Jul 27, 1963
☃
13.2"
Most Snow in One Day
Feb 1, 2011

First & Last Dates — Tulsa

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)
259 days
Longest growing season
2015
163 days
Shortest growing season
1909
217 days
Normal growing season
1991–2020 average

Top 10 Record Highs — September 11

# Temp Date
🏆 103°F September 11, 1909
2 102°F September 11, 2000
3 100°F September 11, 1936
4 99°F September 11, 1956
5 99°F September 11, 1923
6 99°F September 11, 1912
7 97°F September 11, 1975
8 97°F September 11, 1910
9 96°F September 11, 2013
10 96°F September 11, 1996

Top 5 Record Lows — September 11

# Temp Date
🥶 45°F September 11, 1940
2 48°F September 11, 1968
3 48°F September 11, 1959
4 48°F September 11, 1907
5 50°F September 11, 1960
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 1905–2026. Climate normals represent the 1991–2020 average.

Heat Wave Summary — Tulsa

threshold: 101°F (90th percentile of historical Jun–Aug highs)
5.2
Avg heat wave length
days (historical)
105°
Avg peak temp
during heat waves
92
Dangerous nights 2026
Overnights ≥ 70°F
4
Heat waves 2026
so far

Days ≥ 90°F Per Year

1905–2026
88
2026 so far
77
Avg/year 1970–2025
82
Avg/year (last 10 complete)
112
Most in a year (1936)

Average Daily High by Decade

Full year · complete decades only

Longest Heat Waves — Tulsa

# Dates Days Peak Avg High Avg Overnight Low
🏆 Aug 7, 1936 – Aug 27, 1936 21 115°F (Aug 10) 108°F 80°F
2 Jul 28, 1980 – Aug 16, 1980 20 109°F (Jul 29) 105°F 81°F
3 Jul 8, 1934 – Jul 26, 1934 19 110°F (Jul 19) 105°F 77°F
4 Aug 4, 1956 – Aug 18, 1956 15 109°F (Aug 5) 106°F 77°F
5 Jul 7, 1980 – Jul 21, 1980 15 109°F (Jul 16) 105°F 83°F
6 Jul 26, 2011 – Aug 8, 2011 14 113°F (Aug 3) 107°F 81°F
7 Jul 10, 1936 – Jul 20, 1936 11 113°F (Jul 18) 108°F 79°F
8 Aug 1, 1937 – Aug 11, 1937 11 111°F (Aug 9) 106°F 76°F
9 Aug 24, 2000 – Sep 3, 2000 11 108°F (Sep 1) 104°F 77°F
10 Jul 14, 2011 – Jul 24, 2011 11 107°F (Jul 24) 104°F 80°F

Heat Waves Per Year

Warm Summer Nights (Jun–Aug)

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

63
2026 total
above-normal nights
44.4
Avg / summer
1970–2020
74
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 (1893–2026)

Blue = above average · tan = below average · gold = 2026 (partial)
Since 1893, annual totals have trended +0.50" per decade, about +6.6" 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 Tulsa is tracking against normal, year to date

Daily High Temperature vs Normal

Above normal Below normal

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

Precipitation, Year to Date

32.57"
2026 YTD
Normal: 29.49"
+3.08"
0.72"
September so far
September normal: 3.85"
-3.13"
11
2026 heavy rain days
Days with ≥ 1.0"

Accumulation vs. Normal

Running total since Jan 1 against the normal pace for the same date · Tulsa is 3.08" ahead of the normal pace

Period Review — Jun 1 – Aug 31, 2026

Any window, evaluated against every other year on record — 92 days

Quick picks: Last 7 days Last 30 days Last 90 days This month
Seasons: Spring (Mar–May) Summer (Jun–Aug) Fall (Sep–Nov)
84.2°F
Average temperature
8th-warmest of 122
+2.8°
vs. average
Normal: 81.4°F (1991–2020)
13.85"
Precipitation
33rd-wettest of 131
+2.07"
vs. average
Normal: 11.78" · 118% of normal

Average Temperature by Year — Jun 1 – Aug 31

1905–2026 · 2026 highlighted · trend +0.12° per decade (warming since 1905)

Precipitation by Year — Jun 1 – Aug 31

1894–2026 · 2026 highlighted · trend +0.05" per decade (wetter since 1894)

Warmest Jun 1 – Aug 31 on Record

# Year Avg Temp
1 1980 88.0°F
2 2011 87.6°F
3 1936 87.4°F
4 1934 87.3°F
5 1954 85.7°F
6 2022 84.3°F
7 2012 84.2°F
8 2026 84.2°F
9 1925 84.1°F
10 2010 83.9°F

Coolest Jun 1 – Aug 31 on Record

# Year Avg Temp
1 1915 75.8°F
2 1950 75.9°F
3 1906 76.2°F
4 1961 76.6°F
5 1967 76.6°F
6 2004 77.1°F
7 1920 77.1°F
8 1927 77.3°F
9 1940 77.5°F
10 1945 77.6°F

Wettest Jun 1 – Aug 31 on Record

# Year Total
1 1915 25.31"
2 1904 24.83"
3 1927 23.49"
4 1942 20.97"
5 1961 20.40"
6 1948 20.21"
7 1997 19.30"
8 1973 18.86"
9 2008 18.66"
10 1928 18.45"

Driest Jun 1 – Aug 31 on Record

# Year Total
1 1983 2.70"
2 1990 3.15"
3 1956 3.69"
4 1902 3.74"
5 1913 4.08"
6 1984 4.16"
7 1954 4.23"
8 1896 4.70"
9 1912 4.72"
10 1936 4.97"
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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