September is one of the warmer months of the year in Abilene, with average highs near 31.2°C and lows around 18.5°C (mean 24.9°C). It is a relatively wet time of year, averaging 71 mm of rainfall and 57% relative humidity across the period.
September is one of the warmer months of the year in Abilene. Across 45 years of records, the warmest Septembers in Abilene were 1998 and 2023 — when the month averaged 28.5°C — while the coldest was 1991 at 21.6°C. Typical September days reach 31.2°C with nights near 18.5°C. The long-term trend is warming, about 0.4°C per decade.
September is a relatively wet time of year in Abilene, averaging 71 mm of rainfall. The wettest September on record was 2020 with 170 mm, while the driest was 1998 at 7 mm.
Relative humidity in Abilene during September averages 57%. The most humid September was 2018 at 75%, and the least humid was 2000 at 36%.
September receives about 5.3 kWh/m²/day of solar energy in Abilene. The sunniest Septembers were 2000 and 2022 at 6 kWh/m²/day, and the cloudiest was 2018 at 4.5.
Average wind speed in Abilene during September is 3 m/s. The windiest Septembers were 1983 and 1985 at 3.6 m/s, while the calmest were 1990 and 2024 at 2.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 24.5°C | 24.5°C | 24.6°C | 25.5°C | 25.9°C | +1.4°C |
| Avg High | 31.0°C | 30.8°C | 31.0°C | 31.5°C | 32.4°C | +1.4°C |
| Avg Low | 17.9°C | 18.2°C | 18.2°C | 19.4°C | 19.3°C | +1.4°C |
| Avg Rain | 61 mm | 73 mm | 52 mm | 92 mm | 77 mm | +15 mm |
September temperatures in Abilene have risen by about 1.6°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 3°C (1984) to a record high of 43.5°C (2000).
Rainfall in September is a relatively wet time of year, averaging 71 mm, with a wettest year of 170 mm.
One of the best times to visit Abilene
September is one of the best times to visit Abilene. Expect days averaging 31.2°C and nights around 18.5°C (mean 24.9°C) — warmer than Abilene's yearly average — with moderate rainfall (71 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 | 33.2°C | 26.2°C | 19.1°C | 39.4°C | 14.9°C | 24 mm | 51% | 2.8 m/s | 5.7 |
| 2024 | 30.4°C | 24.2°C | 18.1°C | 36.1°C | 12.9°C | 148 mm | 65% | 2.4 m/s | 5.4 |
| 2023 | 34.9°C | 28.5°C | 22.0°C | 42.5°C | 17.4°C | 74 mm | 53% | 2.9 m/s | 5.6 |
| 2022 | 34.0°C | 27.1°C | 20.2°C | 36.2°C | 15.8°C | 17 mm | 49% | 2.7 m/s | 6 |
| 2021 | 33.7°C | 26.8°C | 19.8°C | 38.8°C | 12.3°C | 27 mm | 49% | 2.9 m/s | 5.9 |
| 2020 🌧️ | 28.2°C | 22.3°C | 16.4°C | 35.7°C | 7.9°C | 170 mm | 69% | 2.8 m/s | 5 |
| 2019 | 34.2°C | 28.3°C | 22.3°C | 37.1°C | 20.6°C | 38 mm | 55% | 3.2 m/s | 5.7 |
| 2018 | 28.7°C | 23.6°C | 18.4°C | 36.1°C | 9.0°C | 155 mm | 75% | 2.7 m/s | 4.5 |
| 2017 | 31.7°C | 25.2°C | 18.8°C | 39.2°C | 14.3°C | 105 mm | 57% | 3.1 m/s | 5.2 |
| 2016 | 29.6°C | 24.4°C | 19.2°C | 35.5°C | 11.3°C | 125 mm | 70% | 3 m/s | 5.4 |
| 2015 | 33.1°C | 26.9°C | 20.6°C | 36.8°C | 16.9°C | 15 mm | 53% | 3.1 m/s | 5.7 |
| 2014 | 29.9°C | 24.5°C | 19.0°C | 39.2°C | 10.5°C | 88 mm | 65% | 2.8 m/s | 4.8 |
| 2013 | 32.0°C | 25.8°C | 19.5°C | 39.3°C | 11.6°C | 84 mm | 55% | 2.8 m/s | 5.3 |
| 2012 | 31.1°C | 24.6°C | 18.1°C | 40.3°C | 12.1°C | 164 mm | 54% | 3.2 m/s | 5.2 |
| 2011 | 33.7°C | 26.1°C | 18.4°C | 39.6°C | 12.6°C | 15 mm | 36% | 2.9 m/s | 5.8 |
| 2010 | 30.8°C | 25.1°C | 19.4°C | 35.4°C | 8.8°C | 133 mm | 65% | 3.1 m/s | 5.4 |
| 2009 | 28.6°C | 23.0°C | 17.4°C | 36.1°C | 9.4°C | 95 mm | 65% | 3.1 m/s | 4.6 |
| 2008 | 29.7°C | 23.4°C | 17.0°C | 35.1°C | 11.8°C | 57 mm | 58% | 2.6 m/s | 5.6 |
| 2007 | 30.2°C | 24.8°C | 19.5°C | 32.9°C | 14.0°C | 50 mm | 70% | 2.8 m/s | 5.2 |
| 2006 | 29.1°C | 22.8°C | 16.5°C | 34.9°C | 11.2°C | 79 mm | 58% | 3 m/s | 5.4 |
| 2005 | 33.8°C | 26.8°C | 19.8°C | 39.6°C | 14.2°C | 15 mm | 53% | 2.9 m/s | 5.7 |
| 2004 | 30.5°C | 24.6°C | 18.6°C | 36.3°C | 12.2°C | 34 mm | 57% | 2.9 m/s | 5.5 |
| 2003 | 30.1°C | 23.8°C | 17.5°C | 34.1°C | 13.3°C | 48 mm | 61% | 3.1 m/s | 5.1 |
| 2002 | 31.9°C | 25.2°C | 18.4°C | 37.0°C | 12.1°C | 53 mm | 53% | 2.9 m/s | 5.5 |
| 2001 | 30.8°C | 24.1°C | 17.4°C | 37.1°C | 8.7°C | 76 mm | 60% | 2.8 m/s | 5.7 |
| 2000 | 35.3°C | 27.4°C | 19.4°C | 43.5°C | 6.8°C | 13 mm | 36% | 3.3 m/s | 6 |
| 1999 | 32.7°C | 25.6°C | 18.5°C | 37.4°C | 9.1°C | 34 mm | 46% | 3.2 m/s | 5.4 |
| 1998 🔥 | 35.3°C | 28.5°C | 21.6°C | 39.9°C | 18.3°C | 7 mm | 49% | 3.1 m/s | 5.6 |
| 1997 | 33.2°C | 26.6°C | 20.0°C | 38.9°C | 12.8°C | 23 mm | 52% | 3 m/s | 5.5 |
| 1996 | 28.5°C | 22.6°C | 16.6°C | 32.3°C | 6.3°C | 126 mm | 68% | 2.6 m/s | 5.1 |
| 1995 | 30.2°C | 24.1°C | 18.1°C | 39.7°C | 5.4°C | 108 mm | 63% | 2.9 m/s | 4.7 |
| 1994 | 29.9°C | 23.5°C | 17.1°C | 35.8°C | 8.8°C | 61 mm | 58% | 2.8 m/s | 5.3 |
| 1993 | 30.1°C | 23.5°C | 16.9°C | 34.0°C | 7.6°C | 62 mm | 57% | 3 m/s | 5.3 |
| 1992 | 30.9°C | 24.2°C | 17.5°C | 35.5°C | 10.2°C | 25 mm | 59% | 3.2 m/s | 5.7 |
| 1991 ❄️ | 27.0°C | 21.6°C | 16.2°C | 33.2°C | 7.1°C | 144 mm | 72% | 2.7 m/s | 4.6 |
| 1990 | 29.7°C | 24.4°C | 19.0°C | 38.0°C | 11.4°C | 142 mm | 65% | 2.4 m/s | 4.8 |
| 1989 | 29.8°C | 22.6°C | 15.5°C | 39.1°C | 3.8°C | 81 mm | 54% | 2.9 m/s | 5.6 |
| 1988 | 31.3°C | 24.6°C | 17.9°C | 37.8°C | 9.7°C | 118 mm | 55% | 2.9 m/s | 5.2 |
| 1987 | 29.9°C | 23.4°C | 16.8°C | 34.6°C | 12.3°C | 62 mm | 61% | 2.5 m/s | 5.4 |
| 1986 | 29.8°C | 24.7°C | 19.7°C | 33.4°C | 13.7°C | 79 mm | 71% | 3.5 m/s | 4.7 |
| 1985 | 30.4°C | 24.4°C | 18.5°C | 38.9°C | 3.4°C | 74 mm | 56% | 3.6 m/s | 5.2 |
| 1984 | 30.3°C | 23.4°C | 16.5°C | 38.8°C | 3.0°C | 59 mm | 50% | 3.5 m/s | 5 |
| 1983 | 32.9°C | 26.1°C | 19.2°C | 38.1°C | 7.4°C | 16 mm | 48% | 3.6 m/s | — |
| 1982 | 32.7°C | 25.8°C | 18.8°C | 37.1°C | 11.3°C | 26 mm | 50% | 3.1 m/s | — |
| 1981 | 31.8°C | 25.2°C | 18.6°C | 36.3°C | 10.4°C | 37 mm | 55% | 3 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 31.2°C with lows near 18.5°C (mean 24.9°C), based on 45 years of NASA POWER data.
September averages 71 mm of rainfall in Abilene, a relatively wet time of year. The wettest on record was 170 mm in 2020.
The hottest September reached 43.5°C in 2000. The coldest dipped to 3°C in 1984.
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 31.6°C to 33.2°C and overnight lows from 18.3°C to 19.8°C over the same span.
September is one of the warmer months of the year in Abilene and a relatively wet time of year, so plan for around 31.2°C daytime highs and 18.5°C at night.
Not quite — September is the 9th coolest month in Abilene, averaging 24.9°C.
For September in Abilene, pack light, breathable clothing and sun protection, with typical highs of 31.2°C and lows of 18.5°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 57% — moderately humid.
Average wind speed in September is 3 m/s. The windiest September on record averaged 3.6 m/s (1983).
The wettest September on record was 2020 with 170 mm. On average, September sees 71 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 Abilene 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.
