Dallas, TX

Texas · Records since 1913–2026

☁️ 85°F
Currently in Dallas
As of 9:15 PM CDT

Records for September 26

🔥 Record High

102°F

September 26, 1977

+15° from 87° normal

❄ Record Low

44°F

September 26, 1942

-22° from 66° normal
🌞 Normal high: 87°F 🌑 Normal low: 66°F 1991–2020 normals

All-Time Records — Dallas

🔥
112°F
Hottest Day Ever
Jul 22, 2018
❄
-3°F
Coldest Day Ever
Jan 18, 1930
🌧
6.90"
Wettest Day Ever
Mar 19, 2006
☃
7.8"
Most Snow in One Day
Feb 11, 2010

First & Last Dates — Dallas

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)
333 days
Longest growing season
2017
196 days
Shortest growing season
1957
273 days
Normal growing season
1991–2020 average

Top 10 Record Highs — September 26

# Temp Date
🏆 102°F September 26, 1977
2 100°F September 26, 2005
3 98°F September 26, 1954
4 98°F September 26, 1953
5 96°F September 26, 1976
6 96°F September 26, 1959
7 96°F September 26, 1938
8 95°F September 26, 2019
9 95°F September 26, 2013
10 95°F September 26, 1972

Top 5 Record Lows — September 26

# Temp Date
🥶 44°F September 26, 1942
2 45°F September 26, 1940
3 49°F September 26, 2000
4 50°F September 26, 1989
5 51°F September 26, 1926
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 1913–2026. Climate normals represent the 1991–2020 average.

Heat Wave Summary — Dallas

threshold: 101°F (90th percentile of historical Jun–Aug highs)
5.6
Avg heat wave length
days (historical)
105°
Avg peak temp
during heat waves
134
Dangerous nights 2026
Overnights ≥ 70°F
7
Heat waves 2026
so far

Days ≥ 90°F Per Year

1914–2026
122
2026 so far
101
Avg/year 1970–2025
116
Avg/year (last 10 complete)
137
Most in a year (1956)

Average Daily High by Decade

Full year · complete decades only

Longest Heat Waves — Dallas

# Dates Days Peak Avg High Avg Overnight Low
🏆 Jun 23, 1980 – Jul 23, 1980 31 112°F (Jun 26) 104°F 80°F
2 Jul 14, 1998 – Aug 3, 1998 21 106°F (Aug 1) 104°F 82°F
3 Aug 15, 2011 – Sep 2, 2011 19 108°F (Aug 27) 105°F 84°F
4 Jul 2, 1978 – Jul 19, 1978 18 110°F (Jul 15) 103°F 81°F
5 Aug 9, 2006 – Aug 26, 2006 18 105°F (Aug 15) 103°F 82°F
6 Jul 31, 2010 – Aug 17, 2010 18 105°F (Aug 1) 103°F 82°F
7 Aug 5, 1952 – Aug 21, 1952 17 107°F (Aug 16) 103°F 80°F
8 Aug 3, 1956 – Aug 18, 1956 16 109°F (Aug 5) 104°F 81°F
9 Jul 29, 2023 – Aug 13, 2023 16 107°F (Aug 9) 105°F 84°F
10 Jul 5, 1954 – Jul 19, 1954 15 110°F (Jul 12) 104°F 80°F

Heat Waves Per Year

Warm Summer Nights (Jun–Aug)

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

75
2026 total
above-normal nights
38.0
Avg / summer
1970–2020
87
Most in a summer
2011

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 (1913–2026)

Blue = above average · tan = below average · gold = 2026 (partial)
Since 1913, annual totals have trended +0.61" per decade, about +6.9" 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 Dallas is tracking against normal, year to date

Daily High Temperature vs Normal

Above normal Below normal

187 of 267 days with data were above the 1991–2020 normal high for their date.

Precipitation, Year to Date

23.67"
2026 YTD
Normal: 26.78"
-3.11"
0.00"
September so far
September normal: 3.10"
-3.10"
6
2026 heavy rain days
Days with ≥ 1.0"

Accumulation vs. Normal

Running total since Jan 1 against the normal pace for the same date · Dallas is 3.11" behind the normal pace

Period Review — Jun 27 – Sep 25, 2026

Any window, evaluated against every other year on record — 91 days

Quick picks: Last 7 days Last 30 days Last 90 days This month
Seasons: Spring (Mar–May) Summer (Jun–Aug) Fall (Sep–Nov)
90.3°F
Average temperature
1st-warmest of 113
+5.0°
vs. average
Normal: 85.3°F (1991–2020)

Average Temperature by Year — Jun 27 – Sep 25

1914–2026 · 2026 highlighted · trend +0.35° per decade (warming since 1914)

Precipitation by Year — Jun 27 – Sep 25

1914–2024 · 2026 highlighted · trend +0.08" per decade (wetter since 1914)

Warmest Jun 27 – Sep 25 on Record

# Year Avg Temp
1 2026 90.3°F
2 2011 89.7°F
3 2023 89.3°F
4 1980 88.9°F
5 1998 88.6°F
6 1954 87.5°F
7 2000 87.3°F
8 2019 87.2°F
9 2022 87.2°F
10 2013 87.2°F

Coolest Jun 27 – Sep 25 on Record

# Year Avg Temp
1 1940 79.6°F
2 1915 80.0°F
3 1950 80.2°F
4 1920 80.4°F
5 1919 80.8°F
6 1974 81.1°F
7 1928 81.2°F
8 1961 81.4°F
9 1979 81.4°F
10 1989 81.5°F
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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