Muscle Shoals weather in September: Muscle Shoals, Alabama: normal highs, lows, rain and records for September
Muscle Shoals in September has a normal high of 86°F and a normal low of 63°F, a daily mean of 75°F, falling from 90°F on the 1st to 82°F by the 30th. Measurable precipitation falls on 7 days in a normal September, 3.55 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 30°C and low of 17°C, 90 mm of precipitation in September.
- NOAA stationMuscle Shoals Airport
- Station IDUSW00013896
- Location34.74°N 87.60°W
- Elevation540 ft (165 m)
- Population17,409
- Jan 52° 34°
- Feb 57° 37°
- Mar 65° 44°
- Apr 74° 52°
- May 82° 61°
- Jun 89° 68°
- Jul 92° 71°
- Aug 91° 70°
- Sep 86° 63°
- Oct 76° 52°
- Nov 64° 41°
- Dec 55° 36°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Muscle Shoals in September?
The normal high is 86°F and the normal low 63°F, for a daily mean of 74.7°F. September is 5.8°F cooler than August and 11.1°F warmer than October. September is the 4th warmest month of the year in Muscle Shoals and the 11th wettest. Across the month the normal high falls 8°F, from 90°F on September 1 to 82°F on September 30. From one year to the next September's mean temperature typically moves about 2.6°F either way (NOAA's standard deviation), so roughly two Septembers in three average between 72°F and 77°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 26%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 90°F | 68°F | 26% | 17% |
| September 8 | 88°F | 66°F | 25% | 16% |
| September 15 | 87°F | 64°F | 24% | 15% |
| September 22 | 85°F | 61°F | 24% | 15% |
| September 30 | 82°F | 58°F | 24% | 15% |
Every day of September: normal high, low and chance of precipitation (warmest afternoon September 1, coldest night September 30)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| September 1 | 90°F | 68°F | 26% | 17% | 13 h |
| September 2 | 89°F | 67°F | 26% | 17% | 12 h 50 min |
| September 3 | 89°F | 67°F | 26% | 17% | 12 h 50 min |
| September 4 | 89°F | 67°F | 26% | 17% | 12 h 50 min |
| September 5 | 89°F | 67°F | 25% | 17% | 12 h 50 min |
| September 6 | 89°F | 66°F | 25% | 16% | 12 h 50 min |
| September 7 | 88°F | 66°F | 25% | 16% | 12 h 40 min |
| September 8 | 88°F | 66°F | 25% | 16% | 12 h 40 min |
| September 9 | 88°F | 66°F | 24% | 16% | 12 h 40 min |
| September 10 | 88°F | 65°F | 24% | 16% | 12 h 40 min |
| September 11 | 88°F | 65°F | 24% | 16% | 12 h 40 min |
| September 12 | 87°F | 65°F | 24% | 16% | 12 h 30 min |
| September 13 | 87°F | 64°F | 24% | 16% | 12 h 30 min |
| September 14 | 87°F | 64°F | 24% | 15% | 12 h 30 min |
| September 15 | 87°F | 64°F | 24% | 15% | 12 h 30 min |
| September 16 | 86°F | 63°F | 24% | 15% | 12 h 20 min |
| September 17 | 86°F | 63°F | 24% | 15% | 12 h 20 min |
| September 18 | 86°F | 63°F | 24% | 15% | 12 h 20 min |
| September 19 | 85°F | 62°F | 24% | 15% | 12 h 20 min |
| September 20 | 85°F | 62°F | 24% | 15% | 12 h 20 min |
| September 21 | 85°F | 62°F | 24% | 15% | 12 h 10 min |
| September 22 | 85°F | 61°F | 24% | 15% | 12 h 10 min |
| September 23 | 84°F | 61°F | 24% | 15% | 12 h 10 min |
| September 24 | 84°F | 61°F | 24% | 15% | 12 h 10 min |
| September 25 | 84°F | 60°F | 24% | 15% | 12 h 10 min |
| September 26 | 83°F | 60°F | 24% | 15% | 12 h |
| September 27 | 83°F | 59°F | 24% | 15% | 12 h |
| September 28 | 83°F | 59°F | 24% | 15% | 12 h |
| September 29 | 82°F | 59°F | 24% | 15% | 12 h |
| September 30 | 82°F | 58°F | 24% | 15% | 11 h 50 min |
- Normal high
- 86°FSeptember average
- Normal low
- 63°FSeptember average
- Precipitation
- 3.55 inmonth total
- Days with precipitation
- 70.01 inch or more
- Days at 90°F or more
- 9
- Daylight
- 13 h to 11 h 50 minSeptember 1 to September 30
- Days at 70°F or more
- 30
- Days at 80°F or more
- 25
- Sunshine
- 80%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00013896; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Muscle Shoals in September?
On a given September day the chance of 0.01 inch or more is 24% on average, highest around September 1 (26%). In all, 3.55 in falls on 7 days of a normal September, 1 of them with an inch or more.
In a normal September in Muscle Shoals, 9 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00013896.
How humid and windy is Muscle Shoals in September?
At 3 p.m. the normal temperature is 79°F with 44% relative humidity and a dew point of 56°F; at 6 a.m. it is 59°F with 89% humidity. The wind averages 4.7 mph, most often from the north in the afternoon.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 59°F | 56°F | 89% | 3.0 mph | 72% |
| 9 a.m. | 70°F | 58°F | 65% | 6.3 mph | 75% |
| noon | 78°F | 57°F | 48% | 7.4 mph | 68% |
| 3 p.m. | 79°F | 56°F | 44% | 7.5 mph | 70% |
| 6 p.m. | 71°F | 58°F | 62% | 4.2 mph | 80% |
| 9 p.m. | 65°F | 58°F | 77% | 3.4 mph | 81% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00013896. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for September in Muscle Shoals?
The warmest September temperature on Muscle Shoals's official record (since 1893) is 108°F, on September 8, 1925; the coldest is 36°F, on September 20, 1893. The wettest September brought 10.63 in (2024).
The September mean against the 1991-2020 normal of 74.7°F: 2021 75.0°F (+0.3), 2022 73.5°F (−1.2), 2023 75.7°F (+1.0), 2024 75.7°F (+1.0), 2025 76.2°F (+1.5), 2026 80.3°F (+5.5). 5 of 6 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 75.0°F | +0.3°F | 3.77 in |
| 2022 | 73.5°F | −1.2°F | 3.82 in |
| 2023 | 75.7°F | +1.0°F | 0.06 in |
| 2024 | 75.7°F | +1.0°F | 10.63 in |
| 2025 | 76.2°F | +1.5°F | 5.42 in |
| 2026 | 80.3°F | +5.5°F | 1.06 in |
Source: records: ACIS, NWS threaded record MSLthr; recent months: ACIS, station USW00013896. Records and recent months use complete months only.
How does September in Muscle Shoals compare across Alabama?
Across the 80 places PlainClimate covers in Alabama, September normal highs run from 81°F in Valley Head to 90°F in Eufaula; Muscle Shoals's is 86°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Muscle Shoals in August91°F by day, 70°F at night
- Muscle Shoals in October76°F by day, 52°F at night
- Muscle Shoals through the yearEvery month, frost dates, records and recent years
- Alabama in SeptemberThe statewide normal and the warmest and coolest places
- Eufaula: Alabama's warmest Septembernormal high 90°F