Austin-Bergstrom Airport, TX

Texas · Records since 1942–2026

☀️ 97°F Feels like 104°
Currently in Austin-Bergstrom Airport
As of 1:30 PM CDT
🔥 5° below today's record of 102°F

Records for September 11

🔥 Record High

102°F

September 11, 2000

+10° from 92° normal

❄ Record Low

56°F

September 11, 2021

-13° from 69° normal
🌞 Normal high: 92°F 🌑 Normal low: 69°F 1991–2020 normals

All-Time Records — Austin-Bergstrom Airport

🔥
112°F
Hottest Day Ever
Sep 5, 2000
❄
-5°F
Coldest Day Ever
Jan 31, 1949
🌧
12.49"
Wettest Day Ever
Oct 30, 2015
☃
6.1"
Most Snow in One Day
Feb 15, 2021

First & Last Dates — Austin-Bergstrom Airport

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)
324 days
Longest growing season
1954
199 days
Shortest growing season
1999
246 days
Normal growing season
1991–2020 average

Top 10 Record Highs — September 11

# Temp Date
🏆 102°F September 11, 2000
2 101°F September 11, 2011
3 99°F September 11, 2023
4 99°F September 11, 2014
5 98°F September 11, 2008
6 98°F September 11, 1993
7 97°F September 11, 2025
8 97°F September 11, 2019
9 97°F September 11, 1999
10 97°F September 11, 1984

Top 5 Record Lows — September 11

# Temp Date
🥶 56°F September 11, 2021
2 56°F September 11, 2012
3 56°F September 11, 1968
4 58°F September 11, 2017
5 58°F September 11, 2011
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 1942–2026. Climate normals represent the 1991–2020 average.

Heat Wave Summary — Austin-Bergstrom Airport

threshold: 101°F (90th percentile of historical Jun–Aug highs)
5.4
Avg heat wave length
days (historical)
104°
Avg peak temp
during heat waves
123
Dangerous nights 2026
Overnights ≥ 70°F
3
Heat waves 2026
so far

Days ≥ 90°F Per Year

1943–2026
114
2026 so far
112
Avg/year 1970–2025
132
Avg/year (last 10 complete)
162
Most in a year (2011)

Average Daily High by Decade

Full year · complete decades only

Longest Heat Waves — Austin-Bergstrom Airport

# Dates Days Peak Avg High Avg Overnight Low
🏆 Jul 29, 2023 – Aug 21, 2023 24 109°F (Aug 17) 105°F 76°F
2 Jul 10, 2023 – Jul 26, 2023 17 105°F (Jul 12) 102°F 76°F
3 Jul 21, 1998 – Aug 4, 1998 15 105°F (Aug 3) 102°F 74°F
4 Aug 15, 2026 – Aug 28, 2026 14 107°F (Aug 22) 103°F 74°F
5 Aug 16, 2018 – Aug 29, 2018 14 103°F (Aug 17) 102°F 76°F
6 Jul 31, 2011 – Aug 12, 2011 13 106°F (Aug 2) 104°F 75°F
7 Aug 30, 2023 – Sep 9, 2023 11 107°F (Sep 8) 103°F 73°F
8 Aug 3, 1962 – Aug 13, 1962 11 106°F (Aug 9) 103°F 76°F
9 Jul 8, 2009 – Jul 18, 2009 11 105°F (Jul 8) 102°F 74°F
10 Aug 14, 2011 – Aug 24, 2011 11 105°F (Aug 19) 103°F 72°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
47.8
Avg / summer
1970–2020
85
Most in a summer
1951

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 (1942–2026)

Blue = above average · tan = below average · gold = 2026 (partial)
Since 1942, annual totals have trended +1.14" per decade, about +9.5" 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 Austin-Bergstrom Airport is tracking against normal, year to date

Daily High Temperature vs Normal

Above normal Below normal

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

Precipitation, Year to Date

23.50"
2026 YTD
Normal: 24.07"
-0.57"
0.00"
September so far
September normal: 3.03"
-3.03"
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 · Austin-Bergstrom Airport is 0.57" 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)
88.0°F
Average temperature
3rd-warmest of 80
+4.2°
vs. average
Normal: 83.8°F (1991–2020)
0.30"
Precipitation
10th-driest of 77
-2.96"
vs. average
Normal: 3.26" · 9% of normal

Average Temperature by Year — Aug 11 – Sep 10

1943–2026 · 2026 highlighted · trend +0.14° per decade (warming since 1943)

Precipitation by Year — Aug 11 – Sep 10

1943–2026 · 2026 highlighted · trend +0.01" per decade (wetter since 1943)

Warmest Aug 11 – Sep 10 on Record

# Year Avg Temp
1 2023 89.5°F
2 1985 89.4°F
3 2026 88.0°F
4 1951 87.7°F
5 2019 87.1°F
6 1954 86.8°F
7 1989 86.4°F
8 2018 86.2°F
9 1984 86.0°F
10 2010 85.8°F

Coolest Aug 11 – Sep 10 on Record

# Year Avg Temp
1 1967 78.4°F
2 2004 79.7°F
3 1973 80.2°F
4 1974 80.5°F
5 1966 80.8°F
6 1961 80.9°F
7 2001 80.9°F
8 1971 81.4°F
9 1981 81.4°F
10 1968 81.6°F

Wettest Aug 11 – Sep 10 on Record

# Year Total
1 2017 10.07"
2 2016 9.31"
3 1986 9.19"
4 1969 8.41"
5 2001 8.15"
6 1991 7.00"
7 1962 6.94"
8 1953 6.67"
9 2020 5.98"
10 1944 5.84"

Driest Aug 11 – Sep 10 on Record

# Year Total
1 2011 0.00"
2 1999 0.01"
3 2023 0.14"
4 2019 0.18"
5 2006 0.18"
6 1961 0.24"
7 2014 0.25"
8 2005 0.26"
9 1982 0.26"
10 2026 0.30"
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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