October is one of the warmer months of the year in Suwanee, with average highs near 23.4°C and lows around 10.4°C (mean 16.9°C). It is one of the drier months, averaging 85 mm of rainfall and 72% relative humidity across the period.
October is one of the warmer months of the year in Suwanee. Across 45 years of records, the warmest October in Suwanee was 1984 — when the month averaged 20.9°C — while the coldest was 1988 at 13.1°C. Typical October days reach 23.4°C with nights near 10.4°C. The long-term trend is warming, about 0.4°C per decade.
October is one of the drier months in Suwanee, averaging 85 mm of rainfall. The wettest October on record was 2009 with 227 mm, while the driest was 2016 at 3 mm.
Relative humidity in Suwanee during October averages 72%. The most humid October was 2002 at 86%, and the least humid was 1987 at 51%.
October receives about 3.9 kWh/m²/day of solar energy in Suwanee. The sunniest October was 2010 at 4.7 kWh/m²/day, and the cloudiest was 2002 at 3.
Average wind speed in Suwanee during October is 1.1 m/s. The windiest Octobers were 2017, 2019 and 2025, among others at 1.2 m/s, while the calmest were 2004, 2013 and 2024, among others at 0.9 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 16.3°C | 16.2°C | 17.0°C | 17.6°C | 17.5°C | +1.2°C |
| Avg High | 22.7°C | 22.7°C | 23.4°C | 24.3°C | 24.2°C | +1.5°C |
| Avg Low | 9.9°C | 9.8°C | 10.6°C | 11.0°C | 10.9°C | +1°C |
| Avg Rain | 87 mm | 99 mm | 81 mm | 81 mm | 70 mm | -17 mm |
October temperatures in Suwanee have stayed relatively stable across the record.
October has ranged from a record low of -2.4°C (1989) to a record high of 38.1°C (2019).
Rainfall in October is one of the drier months, averaging 85 mm, with a wettest year of 227 mm.
A good time to visit Suwanee
October is a good time to visit Suwanee, with days averaging 23.4°C and nights around 10.4°C (mean 16.9°C, close to Suwanee's yearly average) and higher rainfall. September and May are marginally more temperate, but October still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 24.7°C | 18.0°C | 11.2°C | 31.4°C | 4.0°C | 69 mm | 65% | 1.2 m/s | 3.9 |
| 2024 | 24.3°C | 17.7°C | 11.1°C | 28.9°C | 1.7°C | 14 mm | 74% | 0.9 m/s | 4.6 |
| 2023 | 24.9°C | 17.7°C | 10.6°C | 30.2°C | 4.8°C | 40 mm | 67% | 1.1 m/s | 4.1 |
| 2022 | 23.9°C | 16.0°C | 8.2°C | 28.9°C | -0.2°C | 45 mm | 61% | 1.1 m/s | 4.5 |
| 2021 | 23.8°C | 18.2°C | 12.5°C | 29.5°C | 5.3°C | 90 mm | 79% | 1 m/s | 3.6 |
| 2020 | 23.5°C | 17.6°C | 11.7°C | 27.1°C | 3.0°C | 160 mm | 82% | 1 m/s | 3.9 |
| 2019 | 26.5°C | 19.9°C | 13.3°C | 38.1°C | 1.6°C | 137 mm | 67% | 1.2 m/s | 3.5 |
| 2018 | 24.3°C | 18.3°C | 12.3°C | 34.1°C | 3.1°C | 114 mm | 73% | 1.1 m/s | 3.8 |
| 2017 | 23.9°C | 17.5°C | 11.0°C | 30.9°C | -1.7°C | 120 mm | 72% | 1.2 m/s | 4.1 |
| 2016 | 28.1°C | 20.4°C | 12.7°C | 32.7°C | 5.4°C | 3 mm | 56% | 1 m/s | 4.6 |
| 2015 | 22.0°C | 16.4°C | 10.8°C | 26.3°C | 2.9°C | 111 mm | 79% | 1 m/s | 3.5 |
| 2014 | 24.4°C | 17.6°C | 10.8°C | 30.8°C | 2.5°C | 99 mm | 73% | 1.1 m/s | 4 |
| 2013 | 23.0°C | 16.9°C | 10.8°C | 29.6°C | -0.6°C | 52 mm | 76% | 0.9 m/s | 4 |
| 2012 | 22.5°C | 16.2°C | 9.9°C | 27.5°C | 0.2°C | 64 mm | 71% | 1.2 m/s | 3.7 |
| 2011 | 23.0°C | 15.7°C | 8.5°C | 29.7°C | 0.9°C | 50 mm | 68% | 1.2 m/s | 4.3 |
| 2010 | 25.2°C | 17.4°C | 9.5°C | 30.6°C | 4.5°C | 64 mm | 62% | 1.1 m/s | 4.7 |
| 2009 🌧️ | 20.2°C | 15.0°C | 9.8°C | 28.3°C | -0.3°C | 227 mm | 85% | 1.1 m/s | 3.1 |
| 2008 | 22.7°C | 16.2°C | 9.6°C | 29.4°C | -1.4°C | 91 mm | 67% | 1.2 m/s | 4.3 |
| 2007 | 25.8°C | 19.0°C | 12.2°C | 31.8°C | 2.2°C | 52 mm | 67% | 1.1 m/s | 3.9 |
| 2006 | 22.5°C | 15.7°C | 8.9°C | 31.8°C | 0.2°C | 97 mm | 67% | 1.1 m/s | 4.1 |
| 2005 | 24.8°C | 18.0°C | 11.2°C | 30.7°C | 1.5°C | 64 mm | 68% | 1.1 m/s | 4 |
| 2004 | 23.4°C | 18.2°C | 13.0°C | 27.4°C | 5.1°C | 48 mm | 83% | 0.9 m/s | 3.3 |
| 2003 | 23.6°C | 16.7°C | 9.7°C | 28.4°C | 5.1°C | 46 mm | 71% | 1 m/s | 3.8 |
| 2002 | 22.6°C | 18.1°C | 13.5°C | 30.3°C | 5.2°C | 135 mm | 86% | 1 m/s | 3 |
| 2001 | 23.1°C | 15.5°C | 7.9°C | 29.0°C | -1.9°C | 31 mm | 58% | 1.2 m/s | 4.5 |
| 2000 | 25.1°C | 17.6°C | 10.0°C | 29.2°C | -0.1°C | 15 mm | 60% | 0.9 m/s | 4.5 |
| 1999 | 23.1°C | 16.4°C | 9.7°C | 29.1°C | 0.6°C | 98 mm | 72% | 1.1 m/s | 4.1 |
| 1998 | 26.6°C | 18.9°C | 11.3°C | 32.2°C | 2.1°C | 30 mm | 61% | 1 m/s | 4.4 |
| 1997 | 21.8°C | 15.9°C | 10.0°C | 28.5°C | -0.2°C | 151 mm | 78% | 1 m/s | 3.8 |
| 1996 | 22.7°C | 16.1°C | 9.4°C | 28.5°C | 1.0°C | 33 mm | 72% | 1.1 m/s | 4 |
| 1995 | 21.5°C | 15.6°C | 9.8°C | 28.6°C | 2.3°C | 220 mm | 83% | 1.2 m/s | 3.8 |
| 1994 | 20.3°C | 15.2°C | 10.1°C | 25.9°C | 2.4°C | 141 mm | 84% | 1.2 m/s | 3.4 |
| 1993 | 22.9°C | 16.3°C | 9.7°C | 30.7°C | -1.2°C | 99 mm | 66% | 1.2 m/s | 3.3 |
| 1992 | 20.8°C | 14.7°C | 8.6°C | 24.6°C | 2.4°C | 84 mm | 79% | 1 m/s | 3.7 |
| 1991 | 23.8°C | 16.8°C | 9.9°C | 28.3°C | 1.5°C | 10 mm | 68% | 1 m/s | 4.4 |
| 1990 | 23.5°C | 16.5°C | 9.5°C | 30.2°C | 0.2°C | 121 mm | 73% | 1.1 m/s | 4 |
| 1989 | 20.9°C | 14.9°C | 9.0°C | 26.4°C | -2.4°C | 75 mm | 82% | 1 m/s | 3.9 |
| 1988 ❄️ | 19.2°C | 13.1°C | 6.9°C | 26.2°C | 0.7°C | 103 mm | 76% | 1 m/s | 3.7 |
| 1987 | 22.8°C | 14.4°C | 5.9°C | 28.4°C | -1.7°C | 12 mm | 51% | 1 m/s | 4.5 |
| 1986 | 22.7°C | 17.0°C | 11.3°C | 33.0°C | 3.6°C | 163 mm | 76% | 1 m/s | 3.5 |
| 1985 | 24.1°C | 18.6°C | 13.2°C | 30.2°C | 4.9°C | 105 mm | 79% | 1.2 m/s | 3.1 |
| 1984 🔥 | 27.2°C | 20.9°C | 14.6°C | 30.3°C | 3.4°C | 53 mm | 70% | 1 m/s | 3.2 |
| 1983 | 22.9°C | 16.4°C | 9.9°C | 29.4°C | 2.7°C | 64 mm | 72% | 1.1 m/s | — |
| 1982 | 22.5°C | 16.2°C | 10.0°C | 31.0°C | 0.9°C | 125 mm | 75% | 1 m/s | — |
| 1981 | 22.3°C | 15.4°C | 8.6°C | 31.8°C | 0.9°C | 83 mm | 67% | 1.1 m/s | — |
Actual recorded October data for each year, 1981–2025 — sourced from NASA POWER.
The average high in October is around 23.4°C with lows near 10.4°C (mean 16.9°C), based on 45 years of NASA POWER data.
October averages 85 mm of rainfall in Suwanee, one of the drier months. The wettest on record was 227 mm in 2009.
The hottest October reached 38.1°C in 2019. The coldest dipped to -2.4°C in 1989.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average October temperatures have held steady by about 0°C — but days and nights have moved in opposite directions. Daytime highs rose from 23.8°C to 24.3°C while overnight lows fell from 11.3°C to 10.7°C, widening the gap between day and night.
October is one of the warmer months of the year in Suwanee and one of the drier months, so plan for around 23.4°C daytime highs and 10.4°C at night.
Not quite — October is the 7th coolest month in Suwanee, averaging 16.9°C.
For October in Suwanee, pack light layers you can adjust through the day, with typical highs of 23.4°C and lows of 10.4°C. Bring an umbrella or light rain jacket too.
Relative humidity in October averages 72% — moderately humid.
Average wind speed in October is 1.1 m/s. The windiest October on record averaged 1.2 m/s (1985).
The wettest October on record was 2009 with 227 mm. On average, October sees 85 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 Suwanee behaves each October, 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 October specifically, along with year-by-year records and how the month has changed over the decades.
