Muscle Shoals, AL

Alabama · Records since 1893–2026

🌤️ 91°F Feels like 96°
Currently in Muscle Shoals
As of 1:00 PM CDT
🔥 7° below today's record of 98°F

Records for September 11

🔥 Record High

98°F

September 11, 2019

+10° from 88° normal

❄ Record Low

42°F

September 11, 1940

-23° from 65° normal
🌞 Normal high: 88°F 🌑 Normal low: 65°F 1991–2020 normals

All-Time Records — Muscle Shoals

🔥
108°F
Hottest Day Ever
Aug 9, 1930
❄
-13°F
Coldest Day Ever
Feb 14, 1905
🌧
6.01"
Wettest Day Ever
Mar 15, 2025
☃
12.0"
Most Snow in One Day
Feb 11, 1910

First & Last Dates — Muscle Shoals

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)
270 days
Longest growing season
2020
163 days
Shortest growing season
1909
227 days
Normal growing season
1991–2020 average

Top 10 Record Highs — September 11

# Temp Date
🏆 98°F September 11, 2019
2 98°F September 11, 2010
3 98°F September 11, 1931
4 96°F September 11, 1983
5 96°F September 11, 1925
6 96°F September 11, 1912
7 96°F September 11, 1897
8 95°F September 11, 2002
9 95°F September 11, 1978
10 95°F September 11, 1963

Top 5 Record Lows — September 11

# Temp Date
🥶 42°F September 11, 1940
2 46°F September 11, 1976
3 47°F September 11, 1969
4 49°F September 11, 1917
5 50°F September 11, 1907
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 1893–2026. Climate normals represent the 1991–2020 average.

Heat Wave Summary — Muscle Shoals

threshold: 97°F (90th percentile of historical Jun–Aug highs)
4.6
Avg heat wave length
days (historical)
101°
Avg peak temp
during heat waves
67
Dangerous nights 2026
Overnights ≥ 70°F
1
Heat waves 2026
so far

Days ≥ 90°F Per Year

1893–2026
72
2026 so far
64
Avg/year 1970–2025
83
Avg/year (last 10 complete)
128
Most in a year (1925)

Average Daily High by Decade

Full year · complete decades only

Longest Heat Waves — Muscle Shoals

# Dates Days Peak Avg High Avg Overnight Low
🏆 Jun 23, 1914 – Jul 10, 1914 18 108°F (Jun 26) 102°F 68°F
2 Aug 3, 2007 – Aug 18, 2007 16 107°F (Aug 15) 101°F 72°F
3 Jul 5, 1980 – Jul 20, 1980 16 105°F (Jul 15) 101°F 76°F
4 Jun 27, 2012 – Jul 7, 2012 11 107°F (Jun 29) 104°F 69°F
5 Aug 4, 1935 – Aug 13, 1935 10 106°F (Aug 8) 102°F 72°F
6 Jul 20, 1952 – Jul 29, 1952 10 106°F (Jul 26) 102°F 72°F
7 Aug 12, 1980 – Aug 21, 1980 10 104°F (Aug 21) 99°F 73°F
8 Sep 2, 1925 – Sep 10, 1925 9 108°F (Sep 8) 104°F 69°F
9 Jul 6, 1930 – Jul 14, 1930 9 108°F (Jul 14) 102°F 72°F
10 Jul 21, 1993 – Jul 29, 1993 9 102°F (Jul 26) 100°F 75°F

Heat Waves Per Year

Warm Summer Nights (Jun–Aug)

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

35
2026 total
above-normal nights
31.1
Avg / summer
1970–2020
71
Most in a summer
2010

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 +0.33" per decade, about +4.4" 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 Muscle Shoals is tracking against normal, year to date

Daily High Temperature vs Normal

Above normal Below normal

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

Precipitation, Year to Date

31.83"
2026 YTD
Normal: 38.78"
-6.95"
0.04"
September so far
September normal: 3.55"
-3.51"
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 · Muscle Shoals is 6.95" 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)
82.2°F
Average temperature
6th-warmest of 129
+3.5°
vs. average
Normal: 78.7°F (1991–2020)
0.74"
Precipitation
12th-driest of 121
-2.81"
vs. average
Normal: 3.55" · 21% of normal

Average Temperature by Year — Aug 11 – Sep 10

1893–2026 · 2026 highlighted · trend +0.07° per decade (warming since 1893)

Precipitation by Year — Aug 11 – Sep 10

1895–2026 · 2026 highlighted · trend +0.04" per decade (wetter since 1895)

Warmest Aug 11 – Sep 10 on Record

# Year Avg Temp
1 2007 83.9°F
2 1954 83.5°F
3 1980 83.2°F
4 1990 83.0°F
5 1899 82.6°F
6 1925 82.2°F
7 2026 82.2°F
8 1983 82.0°F
9 2019 81.3°F
10 1936 81.2°F

Coolest Aug 11 – Sep 10 on Record

# Year Avg Temp
1 1967 71.9°F
2 1974 74.3°F
3 1946 74.5°F
4 1950 74.5°F
5 2004 74.7°F
6 1979 74.8°F
7 1919 74.8°F
8 1893 74.8°F
9 2017 74.9°F
10 1992 75.0°F

Wettest Aug 11 – Sep 10 on Record

# Year Total
1 1932 9.74"
2 1974 8.77"
3 1950 8.65"
4 1942 8.56"
5 1926 8.49"
6 2021 8.06"
7 1928 7.93"
8 1923 7.84"
9 1969 7.47"
10 1979 7.36"

Driest Aug 11 – Sep 10 on Record

# Year Total
1 1904 0.07"
2 1990 0.13"
3 1924 0.18"
4 1954 0.20"
5 1955 0.25"
6 1978 0.58"
7 1988 0.64"
8 1903 0.64"
9 2023 0.65"
10 1983 0.65"
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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