Waco, TX

Texas · Records since 1901–2026

🌤️ 96°F Feels like 106°
Currently in Waco
As of 1:30 PM CDT
🔥 8° below today's record of 104°F

Records for September 11

🔥 Record High

104°F

September 11, 2011

+12° from 92° normal

❄ Record Low

55°F

September 11, 1907

-13° from 68° normal
🌞 Normal high: 92°F 🌑 Normal low: 68°F 1991–2020 normals

All-Time Records — Waco

🔥
114°F
Hottest Day Ever
Jul 23, 2018
❄
-5°F
Coldest Day Ever
Jan 31, 1949
🌧
7.98"
Wettest Day Ever
Dec 20, 1997
☃
7.0"
Most Snow in One Day
Jan 30, 1949

First & Last Dates — Waco

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)
310 days
Longest growing season
1949
205 days
Shortest growing season
1989
246 days
Normal growing season
1991–2020 average

Top 10 Record Highs — September 11

# Temp Date
🏆 104°F September 11, 2011
2 100°F September 11, 2000
3 100°F September 11, 1988
4 100°F September 11, 1912
5 100°F September 11, 1911
6 100°F September 11, 1909
7 100°F September 11, 1905
8 99°F September 11, 1999
9 99°F September 11, 1964
10 99°F September 11, 1963

Top 5 Record Lows — September 11

# Temp Date
🥶 55°F September 11, 1907
2 56°F September 11, 1968
3 57°F September 11, 2017
4 57°F September 11, 1902
5 59°F September 11, 1988
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 1901–2026. Climate normals represent the 1991–2020 average.

Heat Wave Summary — Waco

threshold: 102°F (90th percentile of historical Jun–Aug highs)
5.2
Avg heat wave length
days (historical)
105°
Avg peak temp
during heat waves
112
Dangerous nights 2026
Overnights ≥ 70°F
1
Heat waves 2026
so far

Days ≥ 90°F Per Year

1902–2026
110
2026 so far
114
Avg/year 1970–2025
126
Avg/year (last 10 complete)
149
Most in a year (2022)

Average Daily High by Decade

Full year · complete decades only

Longest Heat Waves — Waco

# Dates Days Peak Avg High Avg Overnight Low
🏆 Aug 14, 2011 – Sep 2, 2011 20 110°F (Aug 27) 105°F 80°F
2 Jul 2, 1978 – Jul 18, 1978 17 107°F (Jul 15) 103°F 79°F
3 Jul 30, 2023 – Aug 14, 2023 16 107°F (Aug 10) 105°F 80°F
4 Jul 17, 2022 – Jul 31, 2022 15 107°F (Jul 18) 104°F 80°F
5 Jul 2, 2011 – Jul 16, 2011 15 105°F (Jul 15) 103°F 79°F
6 Jul 6, 1998 – Jul 19, 1998 14 109°F (Jul 12) 104°F 78°F
7 Aug 16, 2026 – Aug 29, 2026 14 107°F (Aug 23) 104°F 77°F
8 Jul 31, 2011 – Aug 12, 2011 13 109°F (Aug 2) 106°F 81°F
9 Jul 22, 1998 – Aug 3, 1998 13 107°F (Aug 3) 104°F 78°F
10 Jul 28, 1967 – Aug 9, 1967 13 105°F (Jul 30) 103°F 80°F

Heat Waves Per Year

Warm Summer Nights (Jun–Aug)

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

72
2026 total
above-normal nights
49.0
Avg / summer
1970–2020
89
Most in a summer
1934

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 (1901–2026)

Blue = above average · tan = below average · gold = 2026 (partial)
Since 1901, annual totals have trended +0.09" per decade, about +1.1" 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 Waco is tracking against normal, year to date

Daily High Temperature vs Normal

Above normal Below normal

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

Precipitation, Year to Date

19.87"
2026 YTD
Normal: 24.53"
-4.66"
0.02"
September so far
September normal: 2.87"
-2.85"
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 · Waco is 4.66" 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)
89.7°F
Average temperature
2nd-warmest of 125
+5.4°
vs. average
Normal: 84.3°F (1991–2020)
0.03"
Precipitation
4th-driest of 124
-2.73"
vs. average
Normal: 2.76" · 1% of normal

Average Temperature by Year — Aug 11 – Sep 10

1902–2026 · 2026 highlighted

Precipitation by Year — Aug 11 – Sep 10

1902–2026 · 2026 highlighted · trend +0.04" per decade (wetter since 1902)

Warmest Aug 11 – Sep 10 on Record

# Year Avg Temp
1 2023 89.8°F
2 2026 89.7°F
3 1951 88.8°F
4 2011 88.4°F
5 1910 87.9°F
6 2000 87.8°F
7 1999 87.7°F
8 1912 87.6°F
9 1990 87.3°F
10 1905 87.2°F

Coolest Aug 11 – Sep 10 on Record

# Year Avg Temp
1 1915 78.7°F
2 2004 79.1°F
3 1996 80.2°F
4 1953 80.2°F
5 1950 80.3°F
6 1967 80.5°F
7 1920 80.6°F
8 1955 80.7°F
9 1979 81.0°F
10 1942 81.0°F

Wettest Aug 11 – Sep 10 on Record

# Year Total
1 1942 12.51"
2 2008 10.38"
3 1974 10.09"
4 2010 9.79"
5 1935 8.46"
6 1958 8.36"
7 1991 8.08"
8 2021 7.00"
9 2001 6.70"
10 1932 6.64"

Driest Aug 11 – Sep 10 on Record

# Year Total
1 1924 0.00"
2 1912 0.00"
3 1910 0.00"
4 2026 0.03"
5 1982 0.05"
6 2011 0.08"
7 2000 0.08"
8 1956 0.14"
9 1936 0.15"
10 1989 0.17"
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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