September is one of the warmer months of the year in Etah, with average highs near 33.5°C and lows around 24°C (mean 28.8°C). It is a relatively wet time of year, averaging 107 mm of rainfall and 72% relative humidity across the period.
September is one of the warmer months of the year in Etah. Across 45 years of records, the warmest September in Etah was 1987 — when the month averaged 32.2°C — while the coldest was 1982 at 26.5°C. Typical September days reach 33.5°C with nights near 24°C. The long-term September temperature trend is broadly flat.
September is a relatively wet time of year in Etah, averaging 107 mm of rainfall. The wettest September on record was 1993 with 273 mm, while the driest was 1982 at 16 mm.
Relative humidity in Etah during September averages 72%. The most humid September was 2024 at 85%, and the least humid was 2001 at 46%.
September receives about 5 kWh/m²/day of solar energy in Etah. The sunniest September was 1994 at 5.9 kWh/m²/day, and the cloudiest was 2003 at 3.9.
Average wind speed in Etah during September is 1.9 m/s. The windiest September was 2005 at 2.5 m/s, while the calmest was 2003 at 1.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 28.9°C | 28.2°C | 29.6°C | 28.4°C | 28.9°C | 0°C |
| Avg High | 34.1°C | 32.9°C | 34.8°C | 32.9°C | 32.9°C | -1.2°C |
| Avg Low | 23.7°C | 23.6°C | 24.3°C | 23.8°C | 24.9°C | +1.2°C |
| Avg Rain | 72 mm | 121 mm | 91 mm | 106 mm | 168 mm | +96 mm |
September temperatures in Etah have risen by about 0.7°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 15.5°C (1982) to a record high of 41.5°C (1987).
Rainfall in September is a relatively wet time of year, averaging 107 mm, with a wettest year of 273 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.2°C per decade while lows rose 0.3°C per decade, narrowing the gap between day and night.
A good time to visit Etah
September is a good time to visit Etah, with days averaging 33.5°C and nights around 24°C (mean 28.8°C, warmer than Etah's yearly average) and higher rainfall. November and February are marginally more temperate, but September still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 31.2°C | 27.6°C | 24.0°C | 32.7°C | 20.6°C | 221 mm | 85% | 1.8 m/s | 4.8 |
| 2024 | 31.5°C | 28.2°C | 24.9°C | 34.4°C | 23.3°C | 266 mm | 85% | 1.7 m/s | 4.1 |
| 2023 | 32.4°C | 28.4°C | 24.5°C | 35.4°C | 21.3°C | 135 mm | 79% | 1.7 m/s | 4.7 |
| 2022 | 33.9°C | 29.7°C | 25.5°C | 39.7°C | 22.4°C | 241 mm | 73% | 2.2 m/s | 4.3 |
| 2021 | 31.6°C | 28.2°C | 24.7°C | 33.2°C | 22.2°C | 122 mm | 84% | 2.3 m/s | 4.4 |
| 2020 | 36.9°C | 31.4°C | 25.9°C | 39.9°C | 21.4°C | 24 mm | 60% | 1.6 m/s | 5.2 |
| 2019 | 32.1°C | 28.5°C | 24.9°C | 35.5°C | 21.6°C | 134 mm | 83% | 1.6 m/s | 4.1 |
| 2018 | 31.1°C | 27.1°C | 23.1°C | 33.0°C | 19.4°C | 116 mm | 84% | 2.2 m/s | 4.5 |
| 2017 | 35.3°C | 29.9°C | 24.5°C | 38.8°C | 19.9°C | 109 mm | 64% | 1.5 m/s | 4.8 |
| 2016 | 32.5°C | 28.1°C | 23.7°C | 34.1°C | 22.4°C | 48 mm | 78% | 1.6 m/s | 5.2 |
| 2015 | 36.8°C | 30.2°C | 23.7°C | 39.1°C | 18.8°C | 59 mm | 52% | 1.9 m/s | 5.7 |
| 2014 | 36.2°C | 30.1°C | 24.0°C | 38.8°C | 21.3°C | 53 mm | 58% | 2.2 m/s | 5.2 |
| 2013 | 31.5°C | 27.5°C | 23.4°C | 32.9°C | 20.3°C | 108 mm | 81% | 1.8 m/s | 5.4 |
| 2012 | 31.4°C | 27.1°C | 22.8°C | 33.8°C | 17.1°C | 112 mm | 82% | 2 m/s | 5 |
| 2011 | 31.5°C | 27.7°C | 23.8°C | 33.5°C | 20.0°C | 126 mm | 84% | 2 m/s | 5.2 |
| 2010 | 30.8°C | 27.3°C | 23.8°C | 32.7°C | 18.2°C | 190 mm | 85% | 2 m/s | 4.1 |
| 2009 | 34.0°C | 29.0°C | 24.1°C | 36.8°C | 21.6°C | 128 mm | 74% | 1.8 m/s | 5.1 |
| 2008 | 32.1°C | 27.9°C | 23.6°C | 35.6°C | 19.3°C | 128 mm | 80% | 1.7 m/s | 5 |
| 2007 | 35.4°C | 30.3°C | 25.2°C | 37.8°C | 22.3°C | 60 mm | 66% | 1.6 m/s | 5.1 |
| 2006 | 36.1°C | 30.5°C | 24.9°C | 38.3°C | 21.2°C | 49 mm | 59% | 2.1 m/s | 5.6 |
| 2005 | 34.2°C | 29.5°C | 24.8°C | 40.0°C | 21.6°C | 127 mm | 69% | 2.5 m/s | 4.8 |
| 2004 | 35.6°C | 29.6°C | 23.5°C | 39.3°C | 21.2°C | 67 mm | 62% | 1.9 m/s | 5.3 |
| 2003 | 32.1°C | 28.4°C | 24.6°C | 35.3°C | 20.9°C | 137 mm | 79% | 1.4 m/s | 3.9 |
| 2002 | 32.7°C | 27.8°C | 22.9°C | 36.4°C | 19.3°C | 158 mm | 72% | 1.7 m/s | 4.7 |
| 2001 | 38.7°C | 32.0°C | 25.2°C | 40.1°C | 22.3°C | 28 mm | 46% | 1.8 m/s | 5.6 |
| 2000 | 36.9°C | 30.7°C | 24.5°C | 38.6°C | 20.0°C | 26 mm | 58% | 1.6 m/s | 5.4 |
| 1999 | 33.8°C | 29.4°C | 24.9°C | 38.5°C | 23.3°C | 93 mm | 73% | 1.5 m/s | 4.1 |
| 1998 | 33.3°C | 29.2°C | 25.0°C | 37.1°C | 23.3°C | 136 mm | 76% | 1.9 m/s | 5.2 |
| 1997 | 36.2°C | 30.4°C | 24.6°C | 39.4°C | 21.1°C | 50 mm | 57% | 1.9 m/s | 5.1 |
| 1996 | 31.9°C | 27.5°C | 23.1°C | 33.6°C | 19.3°C | 131 mm | 81% | 1.6 m/s | 5.4 |
| 1995 | 31.9°C | 27.4°C | 23.0°C | 33.8°C | 18.6°C | 144 mm | 80% | 1.8 m/s | 5.4 |
| 1994 | 32.2°C | 27.0°C | 21.8°C | 33.6°C | 15.6°C | 20 mm | 76% | 2.1 m/s | 5.9 |
| 1993 🌧️ | 31.6°C | 27.7°C | 23.8°C | 36.2°C | 20.7°C | 273 mm | 80% | 2 m/s | 4.5 |
| 1992 | 33.3°C | 28.1°C | 22.9°C | 36.3°C | 19.0°C | 115 mm | 69% | 1.9 m/s | 5.3 |
| 1991 | 32.3°C | 27.5°C | 22.8°C | 33.5°C | 18.3°C | 92 mm | 77% | 1.7 m/s | 5.4 |
| 1990 | 32.0°C | 28.1°C | 24.3°C | 34.6°C | 22.3°C | 159 mm | 82% | 1.9 m/s | 4.6 |
| 1989 | 35.3°C | 29.9°C | 24.5°C | 38.5°C | 22.8°C | 102 mm | 65% | 1.8 m/s | 5.5 |
| 1988 | 32.9°C | 28.5°C | 24.2°C | 35.6°C | 21.4°C | 38 mm | 79% | 2 m/s | 5.8 |
| 1987 🔥 | 38.9°C | 32.2°C | 25.5°C | 41.5°C | 21.4°C | 56 mm | 48% | 1.8 m/s | 5.8 |
| 1986 | 37.4°C | 30.5°C | 23.6°C | 40.6°C | 21.1°C | 37 mm | 49% | 2.3 m/s | 5.6 |
| 1985 | 31.8°C | 27.5°C | 23.1°C | 35.6°C | 20.1°C | 109 mm | 78% | 2.4 m/s | 5.2 |
| 1984 | 31.4°C | 26.8°C | 22.2°C | 33.1°C | 17.4°C | 120 mm | 79% | 1.9 m/s | 5.6 |
| 1983 | 32.0°C | 28.3°C | 24.6°C | 34.2°C | 22.5°C | 111 mm | 82% | 1.9 m/s | — |
| 1982 ❄️ | 31.9°C | 26.5°C | 21.1°C | 34.1°C | 15.5°C | 16 mm | 75% | 1.8 m/s | — |
| 1981 | 35.1°C | 29.6°C | 24.2°C | 38.3°C | 21.2°C | 59 mm | 67% | 2 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 33.5°C with lows near 24°C (mean 28.8°C), based on 45 years of NASA POWER data.
September averages 107 mm of rainfall in Etah, a relatively wet time of year. The wettest on record was 273 mm in 1993.
The hottest September reached 41.5°C in 1987. The coldest dipped to 15.5°C in 1982.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 0.7°C — but days and nights have moved in opposite directions. Overnight lows rose from 23°C to 24.7°C while daytime highs eased from 32.4°C to 32.1°C, narrowing the gap between day and night.
September is one of the warmer months of the year in Etah and a relatively wet time of year, so plan for around 33.5°C daytime highs and 24°C at night.
Not quite — September is the 7th coolest month in Etah, averaging 28.8°C.
For September in Etah, pack light, breathable clothing and sun protection, with typical highs of 33.5°C and lows of 24°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 72% — moderately humid.
Average wind speed in September is 1.9 m/s. The windiest September on record averaged 2.5 m/s (2005).
The wettest September on record was 1993 with 273 mm. On average, September sees 107 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 Etah 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.
