September is one of the warmer months of the year in Tuscaloosa, with average highs near 30.8°C and lows around 18.1°C (mean 24.5°C). It is one of the drier months, averaging 89 mm of rainfall and 72% relative humidity across the period.
September is one of the warmer months of the year in Tuscaloosa. Across 45 years of records, the warmest September in Tuscaloosa was 2019 — when the month averaged 28.3°C — while the coldest was 1983 at 22°C. Typical September days reach 30.8°C with nights near 18.1°C. The long-term trend is warming, about 0.4°C per decade.
September is one of the drier months in Tuscaloosa, averaging 89 mm of rainfall. The wettest September on record was 2009 with 274 mm, while the driest was 2019 at 3 mm.
Relative humidity in Tuscaloosa during September averages 72%. The most humid September was 2009 at 87%, and the least humid was 1999 at 57%.
September receives about 4.9 kWh/m²/day of solar energy in Tuscaloosa. The sunniest Septembers were 2010 and 2019 at 5.7 kWh/m²/day, and the cloudiest were 1988 and 2009 at 3.9.
Average wind speed in Tuscaloosa during September is 0.1 m/s. The windiest Septembers were 2010, 2011 and 2012, among others at 0.2 m/s, while the calmest were 2023, 2024 and 2025, among others at 0.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 23.8°C | 24.2°C | 24.3°C | 25.2°C | 24.8°C | +1°C |
| Avg High | 30.2°C | 30.7°C | 30.4°C | 31.6°C | 31.3°C | +1.1°C |
| Avg Low | 17.5°C | 17.7°C | 18.2°C | 18.8°C | 18.4°C | +0.9°C |
| Avg Rain | 93 mm | 85 mm | 113 mm | 80 mm | 66 mm | -26 mm |
September temperatures in Tuscaloosa have risen by about 1.6°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 5.3°C (1983) to a record high of 39.1°C (2019).
Rainfall in September is one of the drier months, averaging 89 mm, with a wettest year of 274 mm.
One of the best times to visit Tuscaloosa
September is one of the best times to visit Tuscaloosa. Expect days averaging 30.8°C and nights around 18.1°C (mean 24.5°C) — warmer than Tuscaloosa's yearly average — with higher rainfall (89 mm), so conditions are generally comfortable for sightseeing and outdoor plans.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 33.7°C | 26.2°C | 18.7°C | 36.7°C | 13.9°C | 22 mm | 64% | 0.1 m/s | 5.2 |
| 2024 | 31.6°C | 25.2°C | 18.9°C | 37.2°C | 14.3°C | 126 mm | 72% | 0.1 m/s | 4.4 |
| 2023 | 32.4°C | 25.5°C | 18.6°C | 35.5°C | 13.3°C | 51 mm | 68% | 0.1 m/s | 5.1 |
| 2022 | 30.2°C | 23.6°C | 17.1°C | 36.2°C | 9.3°C | 56 mm | 71% | 0.1 m/s | 5.3 |
| 2021 | 29.4°C | 23.8°C | 18.2°C | 34.6°C | 9.6°C | 93 mm | 80% | 0.1 m/s | 4.8 |
| 2020 | 30.3°C | 24.5°C | 18.6°C | 34.7°C | 10.7°C | 50 mm | 74% | 0.1 m/s | 4.7 |
| 2019 🔥 | 35.7°C | 28.3°C | 20.9°C | 39.1°C | 17.1°C | 3 mm | 64% | 0.1 m/s | 5.7 |
| 2018 | 32.3°C | 26.8°C | 21.4°C | 37.2°C | 17.6°C | 131 mm | 78% | 0.1 m/s | 4.7 |
| 2017 | 30.4°C | 23.9°C | 17.4°C | 34.2°C | 10.7°C | 53 mm | 73% | 0.1 m/s | 5.3 |
| 2016 | 34.0°C | 27.2°C | 20.4°C | 37.4°C | 11.2°C | 35 mm | 66% | 0.1 m/s | 5.5 |
| 2015 | 31.2°C | 24.6°C | 18.0°C | 36.4°C | 10.9°C | 42 mm | 72% | 0.1 m/s | 5 |
| 2014 | 31.7°C | 25.6°C | 19.5°C | 35.3°C | 11.6°C | 44 mm | 74% | 0.1 m/s | 5 |
| 2013 | 30.4°C | 24.2°C | 18.1°C | 34.9°C | 12.3°C | 59 mm | 77% | 0.1 m/s | 5.2 |
| 2012 | 29.1°C | 23.1°C | 17.2°C | 34.4°C | 9.9°C | 197 mm | 77% | 0.2 m/s | 4.8 |
| 2011 | 28.9°C | 22.7°C | 16.5°C | 37.8°C | 11.5°C | 204 mm | 75% | 0.2 m/s | 4.6 |
| 2010 | 32.7°C | 25.4°C | 18.1°C | 37.3°C | 10.3°C | 29 mm | 66% | 0.2 m/s | 5.7 |
| 2009 🌧️ | 28.4°C | 23.9°C | 19.5°C | 32.6°C | 9.2°C | 274 mm | 87% | 0.1 m/s | 3.9 |
| 2008 | 30.0°C | 24.1°C | 18.2°C | 33.6°C | 10.6°C | 43 mm | 76% | 0.1 m/s | 4.7 |
| 2007 | 32.5°C | 25.7°C | 19.0°C | 36.5°C | 10.6°C | 69 mm | 67% | 0.1 m/s | 5.1 |
| 2006 | 30.9°C | 23.8°C | 16.7°C | 34.9°C | 8.9°C | 84 mm | 66% | 0.1 m/s | 5 |
| 2005 | 31.4°C | 24.9°C | 18.4°C | 35.2°C | 12.7°C | 81 mm | 75% | 0.1 m/s | 5.2 |
| 2004 | 30.0°C | 24.0°C | 18.0°C | 34.6°C | 11.3°C | 136 mm | 74% | 0.1 m/s | 5.1 |
| 2003 | 28.7°C | 22.7°C | 16.7°C | 33.1°C | 7.2°C | 69 mm | 78% | 0.1 m/s | 5.4 |
| 2002 | 32.3°C | 26.5°C | 20.8°C | 38.9°C | 16.7°C | 184 mm | 72% | 0.1 m/s | 4.1 |
| 2001 | 27.8°C | 22.1°C | 16.5°C | 32.5°C | 6.0°C | 142 mm | 79% | 0.1 m/s | 4.8 |
| 2000 | 32.0°C | 25.0°C | 18.0°C | 38.2°C | 9.0°C | 44 mm | 60% | 0.1 m/s | 4.7 |
| 1999 | 32.1°C | 24.3°C | 16.5°C | 37.7°C | 7.7°C | 53 mm | 57% | 0.1 m/s | 5.1 |
| 1998 | 32.4°C | 26.1°C | 19.8°C | 37.7°C | 15.6°C | 107 mm | 68% | 0.1 m/s | 5 |
| 1997 | 30.8°C | 24.1°C | 17.5°C | 35.2°C | 11.3°C | 65 mm | 71% | 0.2 m/s | 5.2 |
| 1996 | 29.1°C | 22.9°C | 16.7°C | 34.2°C | 8.8°C | 119 mm | 76% | 0.1 m/s | 4.6 |
| 1995 | 32.0°C | 24.9°C | 17.8°C | 37.4°C | 11.1°C | 79 mm | 66% | 0.1 m/s | 4.7 |
| 1994 | 28.9°C | 22.8°C | 16.8°C | 32.1°C | 9.1°C | 87 mm | 78% | 0.1 m/s | 5 |
| 1993 | 30.6°C | 23.8°C | 17.0°C | 34.1°C | 7.1°C | 96 mm | 72% | 0.1 m/s | 4.8 |
| 1992 | 28.7°C | 23.4°C | 18.2°C | 33.7°C | 9.0°C | 112 mm | 81% | 0.1 m/s | 4.4 |
| 1991 | 29.6°C | 23.7°C | 17.8°C | 35.4°C | 7.2°C | 93 mm | 75% | 0.2 m/s | 5.1 |
| 1990 | 33.2°C | 25.8°C | 18.5°C | 38.7°C | 7.8°C | 42 mm | 62% | 0.2 m/s | 5.2 |
| 1989 | 28.4°C | 23.0°C | 17.6°C | 33.6°C | 9.2°C | 150 mm | 82% | 0.1 m/s | 4 |
| 1988 | 29.5°C | 24.4°C | 19.3°C | 33.7°C | 10.4°C | 224 mm | 82% | 0.1 m/s | 3.9 |
| 1987 | 30.4°C | 24.0°C | 17.6°C | 34.3°C | 11.3°C | 89 mm | 69% | 0.2 m/s | 4.8 |
| 1986 | 32.5°C | 26.2°C | 19.9°C | 36.6°C | 14.9°C | 83 mm | 73% | 0.1 m/s | 4.7 |
| 1985 | 30.2°C | 23.8°C | 17.3°C | 35.1°C | 7.9°C | 93 mm | 69% | 0.1 m/s | 5 |
| 1984 | 30.8°C | 23.4°C | 16.1°C | 35.7°C | 9.9°C | 17 mm | 64% | 0.1 m/s | 5.1 |
| 1983 ❄️ | 27.7°C | 22.0°C | 16.3°C | 33.7°C | 5.3°C | 110 mm | 77% | 0.2 m/s | — |
| 1982 | 30.4°C | 23.5°C | 16.7°C | 34.8°C | 7.7°C | 36 mm | 69% | 0.1 m/s | — |
| 1981 | 31.5°C | 23.9°C | 16.3°C | 35.2°C | 7.1°C | 33 mm | 62% | 0.2 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 30.8°C with lows near 18.1°C (mean 24.5°C), based on 45 years of NASA POWER data.
September averages 89 mm of rainfall in Tuscaloosa, one of the drier months. The wettest on record was 274 mm in 2009.
The hottest September reached 39.1°C in 2019. The coldest dipped to 5.3°C in 1983.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 1.6°C. Daytime highs moved from 30.1°C to 31.5°C and overnight lows from 16.5°C to 18.3°C over the same span.
September is one of the warmer months of the year in Tuscaloosa and one of the drier months, so plan for around 30.8°C daytime highs and 18.1°C at night.
Not quite — September is the 9th coolest month in Tuscaloosa, averaging 24.5°C.
For September in Tuscaloosa, pack light, breathable clothing and sun protection, with typical highs of 30.8°C and lows of 18.1°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 72% — moderately humid.
Average wind speed in September is 0.1 m/s. The windiest September on record averaged 0.2 m/s (1981).
The wettest September on record was 2009 with 274 mm. On average, September sees 89 mm.
All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.
Explore how the weather in Tuscaloosa behaves each September, based on 45 years of NASA POWER climate data from 1981 to 2025. This page breaks down average temperatures, rainfall, humidity, wind and solar radiation for September specifically, along with year-by-year records and how the month has changed over the decades.
