September is one of the warmer months of the year in Utica, with average highs near 20.4°C and lows around 9.4°C (mean 14.9°C). It is about average for rainfall, averaging 101 mm of rainfall and 81% relative humidity across the period.
September is one of the warmer months of the year in Utica. Across 45 years of records, the warmest September in Utica was 2015 — when the month averaged 17.5°C — while the coldest was 1984 at 12.7°C. Typical September days reach 20.4°C with nights near 9.4°C. The long-term trend is warming, about 0.6°C per decade.
September is about average for rainfall in Utica, averaging 101 mm of rainfall. The wettest September on record was 2011 with 216 mm, while the driest was 2017 at 56 mm.
Relative humidity in Utica during September averages 81%. The most humid September was 2011 at 87%, and the least humid was 1995 at 72%.
September receives about 4 kWh/m²/day of solar energy in Utica. The sunniest September was 2016 at 4.8 kWh/m²/day, and the cloudiest were 1986 and 1993 at 3.2.
Average wind speed in Utica during September is 0.1 m/s. The windiest Septembers were 2023, 2024 and 2025, among others at 0.1 m/s, while the calmest were 1997, 2011 and 2021, among others at 0 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 14.0°C | 14.1°C | 15.3°C | 15.7°C | 15.6°C | +1.6°C |
| Avg High | 19.5°C | 19.6°C | 20.8°C | 21.2°C | 21.0°C | +1.5°C |
| Avg Low | 8.5°C | 8.6°C | 9.7°C | 10.2°C | 10.3°C | +1.8°C |
| Avg Rain | 111 mm | 100 mm | 98 mm | 107 mm | 86 mm | -25 mm |
September temperatures in Utica have risen by about 1.6°C between 1981–1985 and 2021–2025.
September has ranged from a record low of -4.2°C (1991) to a record high of 31.5°C (1999).
Rainfall in September is about average for rainfall, averaging 101 mm, with a wettest year of 216 mm.
One of the best times to visit Utica
September is one of the best times to visit Utica. Expect days averaging 20.4°C and nights around 9.4°C (mean 14.9°C) — warmer than Utica's yearly average — with higher rainfall (101 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 | 21.7°C | 15.7°C | 9.8°C | 24.3°C | 4.2°C | 67 mm | 80% | 0.1 m/s | 4.5 |
| 2024 | 21.4°C | 16.3°C | 11.1°C | 25.9°C | 5.8°C | 62 mm | 81% | 0.1 m/s | 4.4 |
| 2023 | 21.2°C | 15.9°C | 10.7°C | 28.7°C | 4.8°C | 65 mm | 84% | 0.1 m/s | 4.2 |
| 2022 | 19.9°C | 15.1°C | 10.3°C | 25.7°C | 0.7°C | 135 mm | 84% | 0.1 m/s | 3.5 |
| 2021 | 20.8°C | 15.6°C | 10.4°C | 25.2°C | 3.9°C | 117 mm | 85% | 0 m/s | 3.7 |
| 2020 | 20.7°C | 15.0°C | 9.3°C | 26.7°C | 0.1°C | 68 mm | 78% | 0.1 m/s | 4.1 |
| 2019 | 21.1°C | 15.3°C | 9.4°C | 26.8°C | 4.5°C | 65 mm | 82% | 0.1 m/s | 4.1 |
| 2018 | 21.8°C | 17.1°C | 12.3°C | 29.5°C | 4.0°C | 149 mm | 84% | 0.1 m/s | 3.9 |
| 2017 | 21.7°C | 16.3°C | 10.8°C | 28.4°C | 3.6°C | 56 mm | 82% | 0.1 m/s | 4.4 |
| 2016 | 22.6°C | 16.4°C | 10.2°C | 28.9°C | 2.1°C | 64 mm | 75% | 0.1 m/s | 4.8 |
| 2015 🔥 | 23.2°C | 17.5°C | 11.8°C | 29.2°C | 5.4°C | 121 mm | 79% | 0.1 m/s | 4.3 |
| 2014 | 20.4°C | 14.7°C | 9.0°C | 27.0°C | -0.2°C | 58 mm | 81% | 0.1 m/s | 4.2 |
| 2013 | 19.2°C | 13.3°C | 7.5°C | 28.6°C | 0.3°C | 97 mm | 82% | 0.1 m/s | 4.3 |
| 2012 | 20.5°C | 14.9°C | 9.4°C | 26.5°C | 2.9°C | 113 mm | 79% | 0.1 m/s | 3.9 |
| 2011 🌧️ | 20.9°C | 16.2°C | 11.6°C | 28.3°C | 1.8°C | 216 mm | 87% | 0 m/s | 3.6 |
| 2010 | 20.3°C | 15.3°C | 10.2°C | 28.6°C | 4.1°C | 128 mm | 81% | 0.1 m/s | 3.3 |
| 2009 | 19.2°C | 14.0°C | 8.7°C | 24.0°C | 2.3°C | 79 mm | 84% | 0.1 m/s | 4.2 |
| 2008 | 21.1°C | 15.6°C | 10.1°C | 28.3°C | 2.0°C | 79 mm | 83% | 0.1 m/s | 3.9 |
| 2007 | 22.1°C | 16.0°C | 9.9°C | 29.8°C | 2.0°C | 90 mm | 80% | 0.1 m/s | 4.3 |
| 2006 | 18.4°C | 13.7°C | 9.0°C | 24.0°C | 2.0°C | 90 mm | 86% | 0.1 m/s | 3.3 |
| 2005 | 22.5°C | 16.7°C | 11.0°C | 27.9°C | 3.5°C | 80 mm | 76% | 0.1 m/s | 4.5 |
| 2004 | 21.5°C | 16.1°C | 10.7°C | 26.8°C | 3.2°C | 110 mm | 85% | 0.1 m/s | 4.3 |
| 2003 | 20.3°C | 15.2°C | 10.1°C | 26.2°C | 4.6°C | 136 mm | 84% | 0.1 m/s | 4 |
| 2002 | 23.0°C | 16.8°C | 10.7°C | 30.5°C | 3.1°C | 133 mm | 73% | 0.1 m/s | 4.4 |
| 2001 | 20.8°C | 14.7°C | 8.6°C | 29.3°C | 1.5°C | 92 mm | 75% | 0.1 m/s | 4.3 |
| 2000 | 19.4°C | 13.7°C | 8.0°C | 27.6°C | -2.7°C | 91 mm | 80% | 0.1 m/s | 4 |
| 1999 | 22.3°C | 16.5°C | 10.7°C | 31.5°C | 3.4°C | 190 mm | 77% | 0.1 m/s | 3.9 |
| 1998 | 20.9°C | 15.3°C | 9.8°C | 27.1°C | 1.8°C | 65 mm | 82% | 0.1 m/s | 3.9 |
| 1997 | 19.1°C | 13.4°C | 7.8°C | 25.3°C | 0.1°C | 75 mm | 80% | 0 m/s | 3.7 |
| 1996 | 19.3°C | 14.8°C | 10.3°C | 26.2°C | 3.7°C | 114 mm | 85% | 0.1 m/s | 3.6 |
| 1995 | 20.0°C | 13.6°C | 7.1°C | 26.0°C | 0.2°C | 77 mm | 72% | 0.1 m/s | 4 |
| 1994 | 18.4°C | 13.4°C | 8.4°C | 24.7°C | 4.5°C | 76 mm | 85% | 0 m/s | 3.8 |
| 1993 | 18.7°C | 13.5°C | 8.4°C | 26.7°C | -0.6°C | 106 mm | 83% | 0 m/s | 3.2 |
| 1992 | 19.3°C | 13.7°C | 8.1°C | 26.6°C | -1.5°C | 102 mm | 82% | 0 m/s | 3.9 |
| 1991 | 19.1°C | 13.2°C | 7.2°C | 28.3°C | -4.2°C | 119 mm | 77% | 0.1 m/s | 3.9 |
| 1990 | 19.2°C | 13.8°C | 8.3°C | 26.2°C | 0.6°C | 82 mm | 82% | 0.1 m/s | 3.4 |
| 1989 | 20.0°C | 14.6°C | 9.2°C | 27.8°C | -1.4°C | 133 mm | 81% | 0.1 m/s | 3.9 |
| 1988 | 19.4°C | 13.5°C | 7.6°C | 25.4°C | 0.1°C | 64 mm | 77% | 0.1 m/s | 4 |
| 1987 | 18.5°C | 13.7°C | 9.0°C | 23.7°C | 2.0°C | 157 mm | 85% | 0.1 m/s | 3.5 |
| 1986 | 18.6°C | 13.5°C | 8.3°C | 24.0°C | 1.8°C | 114 mm | 84% | 0.1 m/s | 3.2 |
| 1985 | 21.3°C | 15.3°C | 9.4°C | 27.2°C | 1.2°C | 152 mm | 79% | 0.1 m/s | 4 |
| 1984 ❄️ | 18.5°C | 12.7°C | 6.9°C | 24.8°C | 0.5°C | 70 mm | 80% | 0.1 m/s | 4.2 |
| 1983 | 21.3°C | 15.0°C | 8.7°C | 28.5°C | 1.8°C | 65 mm | 75% | 0.1 m/s | — |
| 1982 | 20.2°C | 14.4°C | 8.6°C | 27.4°C | 4.2°C | 69 mm | 78% | 0.1 m/s | — |
| 1981 | 18.0°C | 13.3°C | 8.6°C | 25.4°C | -1.5°C | 175 mm | 85% | 0 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 20.4°C with lows near 9.4°C (mean 14.9°C), based on 45 years of NASA POWER data.
September averages 101 mm of rainfall in Utica, about average for rainfall. The wettest on record was 216 mm in 2011.
The hottest September reached 31.5°C in 1999. The coldest dipped to -4.2°C in 1991.
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 19.9°C to 21°C and overnight lows from 8.4°C to 10.5°C over the same span.
September is one of the warmer months of the year in Utica and about average for rainfall, so plan for around 20.4°C daytime highs and 9.4°C at night.
Not quite — September is the 9th coolest month in Utica, averaging 14.9°C.
For September in Utica, pack light layers you can adjust through the day, with typical highs of 20.4°C and lows of 9.4°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 81% — quite humid.
Average wind speed in September is 0.1 m/s. The windiest September on record averaged 0.1 m/s (1982).
The wettest September on record was 2011 with 216 mm. On average, September sees 101 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 Utica 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.
