September is one of the warmer months of the year in Lagrange, with average highs near 30.4°C and lows around 17.4°C (mean 23.9°C). It is one of the drier months, averaging 88 mm of rainfall and 71% relative humidity across the period.
September is one of the warmer months of the year in Lagrange. Across 45 years of records, the warmest September in Lagrange was 2019 — when the month averaged 27.9°C — while the coldest was 1994 at 21.6°C. Typical September days reach 30.4°C with nights near 17.4°C. The long-term trend is warming, about 0.4°C per decade.
September is one of the drier months in Lagrange, averaging 88 mm of rainfall. The wettest September on record was 2024 with 239 mm, while the driest was 1984 at 11 mm.
Relative humidity in Lagrange during September averages 71%. The most humid September was 2009 at 84%, and the least humid was 1999 at 57%.
September receives about 4.8 kWh/m²/day of solar energy in Lagrange. 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 Lagrange during September is 0.1 m/s. The windiest September was 2017 at 0.2 m/s, while the calmest were 2023, 2024 and 2025, among others at 0.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 23.1°C | 23.9°C | 23.5°C | 24.9°C | 24.2°C | +1.1°C |
| Avg High | 29.6°C | 30.7°C | 29.6°C | 31.7°C | 30.7°C | +1.1°C |
| Avg Low | 16.7°C | 17.2°C | 17.3°C | 18.2°C | 17.7°C | +1°C |
| Avg Rain | 89 mm | 87 mm | 95 mm | 73 mm | 101 mm | +12 mm |
September temperatures in Lagrange have risen by about 1.5°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 5.8°C (1983) to a record high of 38.9°C (2019).
Rainfall in September is one of the drier months, averaging 88 mm, with a wettest year of 239 mm.
One of the best times to visit Lagrange
September is one of the best times to visit Lagrange. Expect days averaging 30.4°C and nights around 17.4°C (mean 23.9°C) — warmer than Lagrange's yearly average — with higher rainfall (88 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 | 32.8°C | 25.4°C | 18.0°C | 35.9°C | 14.2°C | 34 mm | 63% | 0.1 m/s | 5.3 |
| 2024 🌧️ | 31.3°C | 25.2°C | 19.0°C | 36.9°C | 15.9°C | 239 mm | 71% | 0.1 m/s | 4.1 |
| 2023 | 31.9°C | 24.8°C | 17.7°C | 36.7°C | 12.5°C | 38 mm | 66% | 0.1 m/s | 5.1 |
| 2022 | 30.0°C | 23.2°C | 16.4°C | 36.3°C | 8.7°C | 57 mm | 70% | 0.1 m/s | 5.3 |
| 2021 | 29.3°C | 23.3°C | 17.2°C | 33.6°C | 9.1°C | 83 mm | 76% | 0.1 m/s | 4.8 |
| 2020 | 28.7°C | 23.1°C | 17.6°C | 35.6°C | 8.2°C | 156 mm | 77% | 0.1 m/s | 4.6 |
| 2019 🔥 | 35.8°C | 27.9°C | 20.1°C | 38.9°C | 14.9°C | 23 mm | 58% | 0.1 m/s | 5.8 |
| 2018 | 33.0°C | 26.8°C | 20.7°C | 36.6°C | 18.4°C | 66 mm | 73% | 0.1 m/s | 4.8 |
| 2017 | 29.5°C | 23.0°C | 16.5°C | 33.7°C | 11.2°C | 112 mm | 72% | 0.2 m/s | 5.2 |
| 2016 | 33.2°C | 26.2°C | 19.3°C | 36.4°C | 10.0°C | 49 mm | 66% | 0.1 m/s | 5.4 |
| 2015 | 29.4°C | 23.5°C | 17.6°C | 37.1°C | 10.2°C | 103 mm | 76% | 0.1 m/s | 4.7 |
| 2014 | 31.5°C | 25.2°C | 18.8°C | 36.0°C | 12.5°C | 72 mm | 73% | 0.1 m/s | 4.6 |
| 2013 | 30.2°C | 23.7°C | 17.3°C | 33.4°C | 11.9°C | 51 mm | 76% | 0.1 m/s | 5.1 |
| 2012 | 30.7°C | 23.8°C | 17.0°C | 36.1°C | 9.0°C | 73 mm | 71% | 0.1 m/s | 4.7 |
| 2011 | 29.4°C | 23.0°C | 16.7°C | 36.5°C | 12.0°C | 117 mm | 71% | 0.1 m/s | 4.5 |
| 2010 | 33.8°C | 26.0°C | 18.1°C | 37.6°C | 11.8°C | 61 mm | 61% | 0.1 m/s | 5.6 |
| 2009 | 28.0°C | 23.2°C | 18.4°C | 32.0°C | 8.6°C | 175 mm | 84% | 0.1 m/s | 3.7 |
| 2008 | 29.8°C | 23.6°C | 17.3°C | 33.4°C | 10.5°C | 28 mm | 74% | 0.1 m/s | 4.8 |
| 2007 | 31.3°C | 24.6°C | 17.9°C | 35.8°C | 10.5°C | 69 mm | 69% | 0.1 m/s | 5 |
| 2006 | 29.8°C | 23.0°C | 16.2°C | 35.1°C | 8.9°C | 84 mm | 70% | 0.1 m/s | 5 |
| 2005 | 31.6°C | 24.8°C | 18.1°C | 35.2°C | 14.6°C | 19 mm | 71% | 0.1 m/s | 5.3 |
| 2004 | 27.6°C | 22.5°C | 17.3°C | 32.6°C | 12.0°C | 230 mm | 81% | 0.1 m/s | 4.5 |
| 2003 | 28.1°C | 22.0°C | 16.0°C | 32.6°C | 6.7°C | 52 mm | 78% | 0.1 m/s | 5.2 |
| 2002 | 31.4°C | 25.6°C | 19.8°C | 37.4°C | 16.4°C | 138 mm | 74% | 0.1 m/s | 3.9 |
| 2001 | 29.5°C | 22.5°C | 15.5°C | 33.9°C | 6.4°C | 70 mm | 67% | 0.1 m/s | 4.9 |
| 2000 | 29.2°C | 22.9°C | 16.5°C | 34.1°C | 8.7°C | 89 mm | 73% | 0.1 m/s | 4.3 |
| 1999 | 31.5°C | 23.5°C | 15.6°C | 38.0°C | 7.2°C | 53 mm | 57% | 0.1 m/s | 5 |
| 1998 | 31.7°C | 25.2°C | 18.7°C | 36.9°C | 13.3°C | 111 mm | 69% | 0.1 m/s | 4.8 |
| 1997 | 32.1°C | 24.8°C | 17.6°C | 37.1°C | 11.4°C | 115 mm | 64% | 0.1 m/s | 5 |
| 1996 | 29.7°C | 23.2°C | 16.6°C | 35.0°C | 11.2°C | 123 mm | 72% | 0.1 m/s | 4.6 |
| 1995 | 30.6°C | 23.8°C | 17.0°C | 35.2°C | 11.7°C | 75 mm | 71% | 0.1 m/s | 4.6 |
| 1994 ❄️ | 27.3°C | 21.6°C | 16.0°C | 31.8°C | 9.7°C | 116 mm | 82% | 0.1 m/s | 4.9 |
| 1993 | 31.7°C | 24.5°C | 17.3°C | 35.5°C | 6.9°C | 61 mm | 67% | 0.1 m/s | 4.9 |
| 1992 | 28.5°C | 23.2°C | 18.0°C | 32.0°C | 10.6°C | 92 mm | 81% | 0.1 m/s | 4.1 |
| 1991 | 30.4°C | 23.8°C | 17.2°C | 37.3°C | 7.6°C | 81 mm | 72% | 0.1 m/s | 4.9 |
| 1990 | 33.3°C | 25.6°C | 17.9°C | 38.6°C | 7.5°C | 38 mm | 59% | 0.1 m/s | 5.1 |
| 1989 | 27.8°C | 22.4°C | 16.9°C | 33.3°C | 10.5°C | 153 mm | 81% | 0.1 m/s | 3.8 |
| 1988 | 28.4°C | 23.1°C | 17.8°C | 33.3°C | 12.8°C | 195 mm | 82% | 0.1 m/s | 3.7 |
| 1987 | 30.4°C | 23.8°C | 17.2°C | 34.1°C | 11.1°C | 67 mm | 69% | 0.1 m/s | 4.6 |
| 1986 | 30.6°C | 24.6°C | 18.6°C | 35.1°C | 13.8°C | 80 mm | 77% | 0.1 m/s | 4.4 |
| 1985 | 30.1°C | 23.1°C | 16.1°C | 34.8°C | 7.9°C | 74 mm | 68% | 0.1 m/s | 4.9 |
| 1984 | 30.0°C | 22.8°C | 15.5°C | 35.4°C | 10.4°C | 11 mm | 66% | 0.1 m/s | 5.1 |
| 1983 | 27.7°C | 21.8°C | 16.0°C | 36.0°C | 5.8°C | 130 mm | 75% | 0.1 m/s | — |
| 1982 | 30.0°C | 23.1°C | 16.2°C | 34.9°C | 7.4°C | 53 mm | 67% | 0.1 m/s | — |
| 1981 | 31.3°C | 23.6°C | 15.8°C | 35.1°C | 7.4°C | 38 mm | 61% | 0.1 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 30.4°C with lows near 17.4°C (mean 23.9°C), based on 45 years of NASA POWER data.
September averages 88 mm of rainfall in Lagrange, one of the drier months. The wettest on record was 239 mm in 2024.
The hottest September reached 38.9°C in 2019. The coldest dipped to 5.8°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 29.8°C to 31.1°C and overnight lows from 15.9°C to 17.7°C over the same span.
September is one of the warmer months of the year in Lagrange and one of the drier months, so plan for around 30.4°C daytime highs and 17.4°C at night.
Not quite — September is the 9th coolest month in Lagrange, averaging 23.9°C.
For September in Lagrange, pack light, breathable clothing and sun protection, with typical highs of 30.4°C and lows of 17.4°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 71% — moderately humid.
Average wind speed in September is 0.1 m/s. The windiest September on record averaged 0.2 m/s (2017).
The wettest September on record was 2024 with 239 mm. On average, September sees 88 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 Lagrange 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.
