September is one of the warmer months of the year in Colorado Springs, with average highs near 22.7°C and lows around 6.8°C (mean 14.8°C). It is about average for rainfall, averaging 33 mm of rainfall and 49% relative humidity across the period.
September is one of the warmer months of the year in Colorado Springs. Across 45 years of records, the warmest September in Colorado Springs was 2019 — when the month averaged 17.3°C — while the coldest was 2006 at 11.5°C. Typical September days reach 22.7°C with nights near 6.8°C. The long-term trend is warming, about 0.6°C per decade.
September is about average for rainfall in Colorado Springs, averaging 33 mm of rainfall. The wettest September on record was 2013 with 132 mm, while the driest was 2010 at 5 mm.
Relative humidity in Colorado Springs during September averages 49%. The most humid September was 1982 at 60%, and the least humid was 2010 at 37%.
September receives about 5.5 kWh/m²/day of solar energy in Colorado Springs. The sunniest September was 2010 at 6.2 kWh/m²/day, and the cloudiest was 2017 at 4.7.
Average wind speed in Colorado Springs during September is 2.3 m/s. The windiest September was 1986 at 2.8 m/s, while the calmest were 1987, 1995 and 2012 at 1.9 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 13.7°C | 14.2°C | 14.4°C | 15.8°C | 16.1°C | +2.4°C |
| Avg High | 21.6°C | 22.1°C | 22.5°C | 23.7°C | 24.3°C | +2.7°C |
| Avg Low | 5.9°C | 6.4°C | 6.3°C | 7.9°C | 8.0°C | +2.1°C |
| Avg Rain | 31 mm | 34 mm | 31 mm | 40 mm | 29 mm | -1 mm |
September temperatures in Colorado Springs have risen by about 2.6°C between 1981–1985 and 2021–2025.
September has ranged from a record low of -8.9°C (1985) to a record high of 32.2°C (2019).
Rainfall in September is about average for rainfall, averaging 33 mm, with a wettest year of 132 mm.
One of the best times to visit Colorado Springs
September is one of the best times to visit Colorado Springs. Expect days averaging 22.7°C and nights around 6.8°C (mean 14.8°C) — warmer than Colorado Springs's yearly average — with moderate rainfall (33 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 | 22.9°C | 15.1°C | 7.4°C | 28.0°C | 3.7°C | 38 mm | 52% | 2 m/s | 5.2 |
| 2024 | 25.2°C | 16.8°C | 8.5°C | 28.9°C | 3.5°C | 21 mm | 42% | 2.4 m/s | 5.5 |
| 2023 | 24.0°C | 15.9°C | 7.7°C | 31.5°C | 2.2°C | 45 mm | 45% | 2.1 m/s | 5.7 |
| 2022 | 25.5°C | 17.2°C | 9.0°C | 31.5°C | 3.8°C | 20 mm | 44% | 2.1 m/s | 5.5 |
| 2021 | 25.4°C | 17.1°C | 8.9°C | 31.6°C | 1.6°C | 31 mm | 44% | 2 m/s | 5.8 |
| 2020 | 23.0°C | 14.6°C | 6.2°C | 31.2°C | -5.0°C | 20 mm | 41% | 2.3 m/s | 5.5 |
| 2019 🔥 | 25.4°C | 17.3°C | 9.2°C | 32.2°C | 2.1°C | 24 mm | 44% | 2.6 m/s | 5.9 |
| 2018 | 24.8°C | 16.7°C | 8.6°C | 29.5°C | 1.9°C | 20 mm | 43% | 2.1 m/s | 5.6 |
| 2017 | 21.7°C | 14.4°C | 7.2°C | 30.1°C | -0.1°C | 54 mm | 56% | 2.3 m/s | 4.7 |
| 2016 | 23.9°C | 15.5°C | 7.0°C | 27.5°C | 0.8°C | 12 mm | 45% | 2.4 m/s | 5.8 |
| 2015 | 25.0°C | 17.0°C | 9.0°C | 28.0°C | 4.4°C | 8 mm | 46% | 2 m/s | 5.7 |
| 2014 | 23.3°C | 15.4°C | 7.4°C | 29.7°C | -2.1°C | 43 mm | 54% | 2 m/s | 5.4 |
| 2013 🌧️ | 22.2°C | 15.1°C | 8.0°C | 29.6°C | -2.4°C | 132 mm | 60% | 2.4 m/s | 5.4 |
| 2012 | 22.8°C | 15.1°C | 7.3°C | 29.6°C | 3.4°C | 44 mm | 46% | 1.9 m/s | 5.4 |
| 2011 | 22.1°C | 14.5°C | 6.9°C | 29.6°C | 1.5°C | 57 mm | 51% | 2.1 m/s | 5.6 |
| 2010 | 25.7°C | 16.8°C | 7.9°C | 29.9°C | 3.8°C | 5 mm | 37% | 2.5 m/s | 6.2 |
| 2009 | 20.4°C | 13.3°C | 6.2°C | 27.9°C | -1.7°C | 50 mm | 57% | 2.5 m/s | 5.2 |
| 2008 | 22.5°C | 14.2°C | 5.9°C | 27.8°C | 3.1°C | 38 mm | 50% | 2.3 m/s | 5.7 |
| 2007 | 23.3°C | 15.4°C | 7.4°C | 27.6°C | -0.2°C | 19 mm | 49% | 2.7 m/s | 5.5 |
| 2006 ❄️ | 19.6°C | 11.5°C | 3.4°C | 26.2°C | -3.4°C | 41 mm | 53% | 2.2 m/s | 5.4 |
| 2005 | 24.0°C | 16.0°C | 8.0°C | 27.7°C | 2.6°C | 20 mm | 44% | 2.3 m/s | 5.5 |
| 2004 | 22.0°C | 14.2°C | 6.5°C | 27.9°C | -1.2°C | 25 mm | 50% | 2.4 m/s | 5.5 |
| 2003 | 22.1°C | 13.4°C | 4.6°C | 27.1°C | -2.4°C | 22 mm | 48% | 2.3 m/s | 5.6 |
| 2002 | 22.8°C | 14.8°C | 6.8°C | 29.7°C | 1.0°C | 42 mm | 47% | 2.5 m/s | 5.4 |
| 2001 | 24.2°C | 15.8°C | 7.4°C | 28.0°C | -3.0°C | 24 mm | 44% | 2 m/s | 5.8 |
| 2000 | 23.9°C | 15.2°C | 6.4°C | 29.7°C | -3.8°C | 26 mm | 43% | 2.5 m/s | 5.5 |
| 1999 | 21.0°C | 12.8°C | 4.7°C | 27.3°C | -6.3°C | 22 mm | 51% | 2.1 m/s | 5.4 |
| 1998 | 24.8°C | 16.7°C | 8.6°C | 29.4°C | 4.1°C | 22 mm | 47% | 2.3 m/s | 6 |
| 1997 | 22.9°C | 15.4°C | 8.0°C | 26.2°C | 1.8°C | 37 mm | 57% | 2 m/s | 5.3 |
| 1996 | 20.2°C | 12.7°C | 5.3°C | 28.4°C | -6.1°C | 59 mm | 54% | 2.2 m/s | 5.3 |
| 1995 | 20.8°C | 13.3°C | 5.9°C | 31.2°C | -6.6°C | 53 mm | 54% | 1.9 m/s | 4.9 |
| 1994 | 22.4°C | 14.6°C | 6.8°C | 27.8°C | -3.9°C | 26 mm | 46% | 2.2 m/s | 5.5 |
| 1993 | 21.4°C | 12.8°C | 4.2°C | 27.7°C | -5.1°C | 38 mm | 49% | 2.3 m/s | 5.2 |
| 1992 | 22.7°C | 14.4°C | 6.2°C | 27.6°C | 0.5°C | 6 mm | 44% | 2.3 m/s | 5.7 |
| 1991 | 21.3°C | 13.8°C | 6.3°C | 25.0°C | 0.5°C | 23 mm | 54% | 2.3 m/s | 5.6 |
| 1990 | 23.2°C | 15.6°C | 8.1°C | 30.1°C | 3.8°C | 51 mm | 53% | 2.2 m/s | 5.3 |
| 1989 | 22.5°C | 14.2°C | 5.9°C | 29.1°C | -0.9°C | 41 mm | 49% | 2.5 m/s | 5.4 |
| 1988 | 21.7°C | 13.3°C | 5.0°C | 29.1°C | -1.8°C | 28 mm | 43% | 2.7 m/s | 5.1 |
| 1987 | 21.7°C | 14.0°C | 6.3°C | 26.9°C | 1.5°C | 18 mm | 49% | 1.9 m/s | 5.4 |
| 1986 | 20.6°C | 12.9°C | 5.2°C | 25.5°C | -1.7°C | 20 mm | 50% | 2.8 m/s | 4.8 |
| 1985 | 19.7°C | 11.8°C | 4.0°C | 26.3°C | -8.9°C | 52 mm | 53% | 2.7 m/s | 5 |
| 1984 | 21.7°C | 13.7°C | 5.7°C | 27.8°C | -5.7°C | 16 mm | 52% | 2.5 m/s | 5.3 |
| 1983 | 23.6°C | 15.3°C | 7.0°C | 29.2°C | -4.8°C | 10 mm | 47% | 2.6 m/s | — |
| 1982 | 20.2°C | 13.2°C | 6.3°C | 29.1°C | -0.2°C | 64 mm | 60% | 2.2 m/s | — |
| 1981 | 22.5°C | 15.1°C | 7.6°C | 27.8°C | 3.8°C | 27 mm | 51% | 2.2 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 22.7°C with lows near 6.8°C (mean 14.8°C), based on 45 years of NASA POWER data.
September averages 33 mm of rainfall in Colorado Springs, about average for rainfall. The wettest on record was 132 mm in 2013.
The hottest September reached 32.2°C in 2019. The coldest dipped to -8.9°C in 1985.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 2.6°C. Daytime highs moved from 21.5°C to 24.6°C and overnight lows from 6.1°C to 8.3°C over the same span.
September is one of the warmer months of the year in Colorado Springs and about average for rainfall, so plan for around 22.7°C daytime highs and 6.8°C at night.
Not quite — September is the 9th coolest month in Colorado Springs, averaging 14.8°C.
For September in Colorado Springs, pack warm layers and a jacket for chilly mornings, with typical highs of 22.7°C and lows of 6.8°C.
Relative humidity in September averages 49% — relatively dry.
Average wind speed in September is 2.3 m/s. The windiest September on record averaged 2.8 m/s (1986).
The wettest September on record was 2013 with 132 mm. On average, September sees 33 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 Colorado Springs 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.
