San Angelo, TX

Texas · Records since 1907–2026

☀️ 96°F Feels like 101°
Currently in San Angelo
As of 1:30 PM CDT

Records for September 11

🔥 Record High

104°F

September 11, 2000

+14° from 90° normal

❄ Record Low

52°F

September 11, 2017

-14° from 66° normal
🌞 Normal high: 90°F 🌑 Normal low: 66°F 1991–2020 normals

All-Time Records — San Angelo

🔥
114°F
Hottest Day Ever
Jun 21, 2023
❄
-4°F
Coldest Day Ever
Dec 23, 1989
🌧
11.75"
Wettest Day Ever
Sep 15, 1936
☃
10.1"
Most Snow in One Day
Feb 14, 2021

First & Last Dates — San Angelo

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)
276 days
Longest growing season
1922
176 days
Shortest growing season
1908
230 days
Normal growing season
1991–2020 average

Top 10 Record Highs — September 11

# Temp Date
🏆 104°F September 11, 2000
2 103°F September 11, 2010
3 100°F September 11, 1963
4 100°F September 11, 1910
5 99°F September 11, 1911
6 98°F September 11, 2011
7 98°F September 11, 1946
8 98°F September 11, 1937
9 98°F September 11, 1924
10 98°F September 11, 1919

Top 5 Record Lows — September 11

# Temp Date
🥶 52°F September 11, 2017
2 52°F September 11, 1968
3 53°F September 11, 2020
4 53°F September 11, 1948
5 54°F September 11, 2024
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 1907–2026. Climate normals represent the 1991–2020 average.

Heat Wave Summary — San Angelo

threshold: 102°F (90th percentile of historical Jun–Aug highs)
5.1
Avg heat wave length
days (historical)
106°
Avg peak temp
during heat waves
81
Dangerous nights 2026
Overnights ≥ 70°F
1
Heat waves 2026
so far

Days ≥ 90°F Per Year

1907–2026
119
2026 so far
113
Avg/year 1970–2025
136
Avg/year (last 10 complete)
166
Most in a year (2011)

Average Daily High by Decade

Full year · complete decades only

Longest Heat Waves — San Angelo

# Dates Days Peak Avg High Avg Overnight Low
🏆 Jul 23, 2023 – Aug 13, 2023 22 111°F (Aug 10) 106°F 76°F
2 Jul 31, 2010 – Aug 17, 2010 18 107°F (Aug 1) 104°F 75°F
3 Jun 14, 2023 – Jun 29, 2023 16 114°F (Jun 20) 108°F 74°F
4 Jul 14, 2018 – Jul 29, 2018 16 109°F (Jul 23) 105°F 75°F
5 Aug 10, 2024 – Aug 24, 2024 15 112°F (Aug 22) 105°F 77°F
6 Jul 19, 1912 – Aug 2, 1912 15 110°F (Jul 31) 105°F 76°F
7 Jul 22, 2022 – Aug 5, 2022 15 106°F (Aug 4) 103°F 78°F
8 Aug 18, 2011 – Aug 31, 2011 14 108°F (Aug 28) 104°F 75°F
9 Jul 9, 2023 – Jul 21, 2023 13 110°F (Jul 18) 106°F 78°F
10 Jul 31, 2016 – Aug 12, 2016 13 105°F (Aug 10) 103°F 77°F

Heat Waves Per Year

Warm Summer Nights (Jun–Aug)

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

40
2026 total
above-normal nights
34.8
Avg / summer
1970–2020
78
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 (1907–2026)

Blue = above average · tan = below average · gold = 2026 (partial)
Since 1907, annual totals have trended +0.23" per decade, about +2.7" 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 San Angelo is tracking against normal, year to date

Daily High Temperature vs Normal

Above normal Below normal

148 of 251 days with data were above the 1991–2020 normal high for their date.

Precipitation, Year to Date

13.67"
2026 YTD
Normal: 14.83"
-1.16"
0.34"
September so far
September normal: 2.51"
-2.17"
2
2026 heavy rain days
Days with ≥ 1.0"

Accumulation vs. Normal

Running total since Jan 1 against the normal pace for the same date · San Angelo is 1.16" behind the normal pace

Period Review — Sep 1 – Nov 30, 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)
2026 is still under way for this window — totals and rankings appear once November 30 passes.

Average Temperature by Year — Sep 1 – Nov 30

1907–2025 · 2026 highlighted · trend +0.16° per decade (warming since 1907)

Precipitation by Year — Sep 1 – Nov 30

1945–2025 · 2026 highlighted · trend +0.23" per decade (wetter since 1945)

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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