September is one of the warmer months of the year in Gadsden, with average highs near 30°C and lows around 17°C (mean 23.5°C). It is one of the drier months, averaging 93 mm of rainfall and 69% relative humidity across the period.
September is one of the warmer months of the year in Gadsden. Across 45 years of records, the warmest September in Gadsden was 2019 — when the month averaged 27.9°C — while the coldest was 2011 at 21.1°C. Typical September days reach 30°C with nights near 17°C. The long-term trend is warming, about 0.4°C per decade.
September is one of the drier months in Gadsden, averaging 93 mm of rainfall. The wettest September on record was 1988 with 252 mm, while the driest was 1984 at 8 mm.
Relative humidity in Gadsden during September averages 69%. The most humid September was 2009 at 83%, and the least humid was 1999 at 48%.
September receives about 4.8 kWh/m²/day of solar energy in Gadsden. The sunniest September was 2019 at 5.8 kWh/m²/day, and the cloudiest were 1988 and 2009 at 3.7.
Average wind speed in Gadsden during September is 0.4 m/s. The windiest September was 2004 at 0.5 m/s, while the calmest was 2014 at 0.3 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 22.6°C | 23.5°C | 23.4°C | 24.3°C | 23.7°C | +1.1°C |
| Avg High | 28.9°C | 30.4°C | 29.7°C | 30.8°C | 30.3°C | +1.4°C |
| Avg Low | 16.2°C | 16.7°C | 17.1°C | 17.8°C | 17.2°C | +1°C |
| Avg Rain | 96 mm | 92 mm | 103 mm | 87 mm | 80 mm | -16 mm |
September temperatures in Gadsden have risen by about 1.5°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 4.9°C (1983) to a record high of 39.1°C (1990).
Rainfall in September is one of the drier months, averaging 93 mm, with a wettest year of 252 mm.
One of the best times to visit Gadsden
September is one of the best times to visit Gadsden. Expect days averaging 30°C and nights around 17°C (mean 23.5°C) — warmer than Gadsden's yearly average — with higher rainfall (93 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 | 32.2°C | 24.9°C | 17.7°C | 35.3°C | 13.7°C | 57 mm | 63% | 0.4 m/s | 5.3 |
| 2024 | 30.7°C | 24.5°C | 18.3°C | 36.4°C | 13.0°C | 124 mm | 68% | 0.4 m/s | 4.1 |
| 2023 | 31.5°C | 24.4°C | 17.3°C | 35.1°C | 12.7°C | 38 mm | 66% | 0.4 m/s | 5.1 |
| 2022 | 29.6°C | 22.7°C | 15.9°C | 35.8°C | 8.2°C | 72 mm | 68% | 0.4 m/s | 5.3 |
| 2021 | 28.1°C | 22.5°C | 17.0°C | 31.4°C | 8.3°C | 98 mm | 78% | 0.4 m/s | 4.8 |
| 2020 | 29.5°C | 23.3°C | 17.1°C | 34.4°C | 8.6°C | 93 mm | 72% | 0.4 m/s | 4.6 |
| 2019 🔥 | 35.6°C | 27.9°C | 20.3°C | 38.9°C | 14.8°C | 17 mm | 58% | 0.4 m/s | 5.8 |
| 2018 | 32.6°C | 26.6°C | 20.6°C | 36.7°C | 17.7°C | 126 mm | 72% | 0.4 m/s | 4.8 |
| 2017 | 28.6°C | 22.3°C | 16.1°C | 32.4°C | 9.9°C | 106 mm | 72% | 0.4 m/s | 5.2 |
| 2016 | 33.6°C | 26.5°C | 19.3°C | 37.3°C | 9.5°C | 21 mm | 61% | 0.4 m/s | 5.4 |
| 2015 | 29.8°C | 23.5°C | 17.2°C | 35.1°C | 9.4°C | 47 mm | 72% | 0.4 m/s | 4.7 |
| 2014 | 30.7°C | 24.6°C | 18.4°C | 34.6°C | 11.2°C | 46 mm | 71% | 0.3 m/s | 4.6 |
| 2013 | 29.4°C | 23.2°C | 16.9°C | 32.7°C | 10.9°C | 83 mm | 75% | 0.4 m/s | 5.1 |
| 2012 | 28.6°C | 22.3°C | 16.0°C | 35.2°C | 6.9°C | 165 mm | 72% | 0.4 m/s | 4.7 |
| 2011 ❄️ | 26.5°C | 21.1°C | 15.6°C | 37.4°C | 9.5°C | 226 mm | 77% | 0.4 m/s | 4.5 |
| 2010 | 32.7°C | 25.0°C | 17.4°C | 37.0°C | 9.8°C | 36 mm | 59% | 0.4 m/s | 5.6 |
| 2009 | 27.6°C | 23.1°C | 18.5°C | 30.8°C | 8.1°C | 184 mm | 83% | 0.4 m/s | 3.7 |
| 2008 | 29.0°C | 23.1°C | 17.2°C | 32.7°C | 10.0°C | 33 mm | 74% | 0.4 m/s | 4.8 |
| 2007 | 31.6°C | 24.7°C | 17.9°C | 36.1°C | 10.1°C | 68 mm | 64% | 0.4 m/s | 5 |
| 2006 | 29.3°C | 22.3°C | 15.4°C | 33.8°C | 7.4°C | 103 mm | 67% | 0.4 m/s | 5 |
| 2005 | 32.8°C | 25.3°C | 17.8°C | 36.3°C | 11.2°C | 50 mm | 63% | 0.4 m/s | 5.3 |
| 2004 | 28.3°C | 22.5°C | 16.8°C | 33.0°C | 10.0°C | 164 mm | 75% | 0.5 m/s | 4.5 |
| 2003 | 29.7°C | 22.9°C | 16.1°C | 34.1°C | 6.5°C | 53 mm | 70% | 0.4 m/s | 5.2 |
| 2002 | 31.3°C | 25.4°C | 19.5°C | 37.4°C | 15.3°C | 190 mm | 72% | 0.4 m/s | 3.9 |
| 2001 | 27.2°C | 21.2°C | 15.2°C | 32.2°C | 4.9°C | 113 mm | 73% | 0.4 m/s | 4.9 |
| 2000 | 30.1°C | 23.3°C | 16.4°C | 35.8°C | 7.1°C | 65 mm | 63% | 0.4 m/s | 4.3 |
| 1999 | 31.8°C | 23.7°C | 15.7°C | 38.1°C | 6.7°C | 27 mm | 48% | 0.4 m/s | 5 |
| 1998 | 33.2°C | 25.9°C | 18.7°C | 38.2°C | 11.3°C | 24 mm | 60% | 0.4 m/s | 4.8 |
| 1997 | 30.8°C | 23.9°C | 17.0°C | 36.3°C | 11.2°C | 141 mm | 66% | 0.4 m/s | 5 |
| 1996 | 28.5°C | 22.0°C | 15.6°C | 33.8°C | 7.8°C | 143 mm | 73% | 0.4 m/s | 4.6 |
| 1995 | 30.1°C | 23.3°C | 16.4°C | 35.8°C | 10.0°C | 116 mm | 68% | 0.4 m/s | 4.6 |
| 1994 | 28.4°C | 22.0°C | 15.6°C | 32.9°C | 7.7°C | 124 mm | 75% | 0.4 m/s | 4.9 |
| 1993 | 30.7°C | 23.4°C | 16.2°C | 36.3°C | 6.5°C | 79 mm | 66% | 0.4 m/s | 4.9 |
| 1992 | 27.1°C | 22.0°C | 16.8°C | 31.3°C | 7.4°C | 114 mm | 82% | 0.4 m/s | 4.1 |
| 1991 | 30.5°C | 23.9°C | 17.3°C | 37.1°C | 6.1°C | 88 mm | 67% | 0.4 m/s | 4.9 |
| 1990 | 32.5°C | 25.2°C | 17.8°C | 39.1°C | 6.1°C | 68 mm | 59% | 0.4 m/s | 5.1 |
| 1989 | 27.2°C | 21.9°C | 16.6°C | 31.7°C | 8.2°C | 185 mm | 82% | 0.4 m/s | 3.8 |
| 1988 🌧️ | 27.7°C | 22.5°C | 17.3°C | 31.4°C | 10.2°C | 252 mm | 82% | 0.4 m/s | 3.7 |
| 1987 | 29.6°C | 23.0°C | 16.4°C | 33.4°C | 10.7°C | 88 mm | 67% | 0.4 m/s | 4.6 |
| 1986 | 29.8°C | 24.1°C | 18.4°C | 34.1°C | 13.3°C | 99 mm | 77% | 0.4 m/s | 4.4 |
| 1985 | 28.2°C | 21.8°C | 15.4°C | 32.4°C | 6.4°C | 72 mm | 70% | 0.4 m/s | 4.9 |
| 1984 | 30.1°C | 22.5°C | 14.8°C | 36.3°C | 8.9°C | 8 mm | 61% | 0.4 m/s | 5.1 |
| 1983 | 28.2°C | 22.1°C | 16.0°C | 35.8°C | 4.9°C | 87 mm | 70% | 0.4 m/s | — |
| 1982 | 30.1°C | 23.0°C | 15.8°C | 34.9°C | 7.1°C | 34 mm | 65% | 0.4 m/s | — |
| 1981 | 29.5°C | 22.2°C | 14.8°C | 33.1°C | 6.8°C | 37 mm | 64% | 0.4 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 30°C with lows near 17°C (mean 23.5°C), based on 45 years of NASA POWER data.
September averages 93 mm of rainfall in Gadsden, one of the drier months. The wettest on record was 252 mm in 1988.
The hottest September reached 39.1°C in 1990. The coldest dipped to 4.9°C in 1983.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 1.5°C. Daytime highs moved from 29.2°C to 30.4°C and overnight lows from 15.4°C to 17.2°C over the same span.
September is one of the warmer months of the year in Gadsden and one of the drier months, so plan for around 30°C daytime highs and 17°C at night.
Not quite — September is the 9th coolest month in Gadsden, averaging 23.5°C.
For September in Gadsden, pack light, breathable clothing and sun protection, with typical highs of 30°C and lows of 17°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 69% — moderately humid.
Average wind speed in September is 0.4 m/s. The windiest September on record averaged 0.5 m/s (2004).
The wettest September on record was 1988 with 252 mm. On average, September sees 93 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 Gadsden 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.
