October is one of the warmer months of the year in Amherst, with average highs near 13°C and lows around 5.5°C (mean 9.3°C). It is a relatively wet time of year, averaging 93 mm of rainfall and 82% relative humidity across the period.
October is one of the warmer months of the year in Amherst. Across 45 years of records, the warmest October in Amherst was 2017 — when the month averaged 12.1°C — while the coldest was 2009 at 6.5°C. Typical October days reach 13°C with nights near 5.5°C. The long-term trend is warming, about 0.6°C per decade.
October is a relatively wet time of year in Amherst, averaging 93 mm of rainfall. The wettest October on record was 2005 with 232 mm, while the driest was 1994 at 23 mm.
Relative humidity in Amherst during October averages 82%. The most humid October was 2005 at 88%, and the least humid was 1985 at 77%.
October receives about 2.5 kWh/m²/day of solar energy in Amherst. The sunniest Octobers were 2001 and 2017 at 3 kWh/m²/day, and the cloudiest was 1990 at 2.1.
Average wind speed in Amherst during October is 1.2 m/s. The windiest Octobers were 1993, 1998 and 1999 at 1.4 m/s, while the calmest was 2022 at 1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 8.3°C | 8.7°C | 9.2°C | 9.7°C | 11.2°C | +2.9°C |
| Avg High | 12.1°C | 12.4°C | 12.8°C | 13.4°C | 15.0°C | +2.9°C |
| Avg Low | 4.4°C | 4.9°C | 5.6°C | 6.0°C | 7.3°C | +2.9°C |
| Avg Rain | 83 mm | 90 mm | 122 mm | 91 mm | 67 mm | -16 mm |
October temperatures in Amherst have risen by about 3.1°C between 1981–1985 and 2021–2025.
October has ranged from a record low of -3.7°C (1985) to a record high of 26.6°C (2025).
Rainfall in October is a relatively wet time of year, averaging 93 mm, with a wettest year of 232 mm.
A good time to visit Amherst
October is a good time to visit Amherst, with days averaging 13°C and nights around 5.5°C (mean 9.3°C, warmer than Amherst's yearly average) and higher rainfall. August and July 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 | 15.2°C | 11.5°C | 7.7°C | 26.6°C | 2.6°C | 84 mm | 82% | 1.2 m/s | 2.6 |
| 2024 | 14.3°C | 10.5°C | 6.6°C | 20.4°C | -1.8°C | 56 mm | 80% | 1.2 m/s | 2.7 |
| 2023 | 15.4°C | 11.8°C | 8.2°C | 22.7°C | -1.7°C | 94 mm | 85% | 1.1 m/s | 2.5 |
| 2022 | 16.1°C | 11.9°C | 7.7°C | 20.2°C | 1.1°C | 59 mm | 84% | 1 m/s | 2.9 |
| 2021 | 15.5°C | 11.8°C | 8.0°C | 21.0°C | 4.9°C | 55 mm | 83% | 1.1 m/s | 2.6 |
| 2020 | 13.6°C | 9.5°C | 5.4°C | 20.8°C | -2.9°C | 52 mm | 78% | 1.2 m/s | 2.6 |
| 2019 | 12.9°C | 9.4°C | 5.8°C | 17.1°C | 0.9°C | 89 mm | 84% | 1.2 m/s | 2.6 |
| 2018 | 10.9°C | 7.3°C | 3.8°C | 19.3°C | -3.5°C | 132 mm | 82% | 1.3 m/s | 2.2 |
| 2017 🔥 | 16.3°C | 12.1°C | 7.9°C | 21.2°C | 2.9°C | 57 mm | 80% | 1.3 m/s | 3 |
| 2016 | 13.6°C | 9.8°C | 6.0°C | 21.3°C | -0.2°C | 114 mm | 84% | 1.2 m/s | 2.6 |
| 2015 | 12.2°C | 8.2°C | 4.2°C | 20.2°C | -2.8°C | 70 mm | 81% | 1.3 m/s | 2.7 |
| 2014 | 14.7°C | 11.3°C | 8.0°C | 19.7°C | 2.3°C | 84 mm | 84% | 1.2 m/s | 2.2 |
| 2013 | 13.4°C | 9.3°C | 5.2°C | 21.4°C | -2.4°C | 52 mm | 81% | 1.2 m/s | 2.9 |
| 2012 | 14.1°C | 10.4°C | 6.8°C | 19.9°C | -0.2°C | 81 mm | 84% | 1.2 m/s | 2.5 |
| 2011 | 13.1°C | 10.0°C | 6.8°C | 23.2°C | -0.6°C | 146 mm | 86% | 1.3 m/s | 2.3 |
| 2010 | 12.6°C | 9.2°C | 5.7°C | 23.9°C | 0.0°C | 88 mm | 82% | 1.3 m/s | 2.5 |
| 2009 ❄️ | 9.8°C | 6.5°C | 3.3°C | 16.1°C | -1.5°C | 192 mm | 85% | 1.3 m/s | 2.2 |
| 2008 | 12.4°C | 9.0°C | 5.6°C | 17.9°C | 0.3°C | 63 mm | 84% | 1.3 m/s | 2.7 |
| 2007 | 14.1°C | 10.3°C | 6.4°C | 20.8°C | -1.2°C | 41 mm | 83% | 1.2 m/s | 2.7 |
| 2006 | 12.4°C | 8.9°C | 5.4°C | 19.1°C | 0.3°C | 174 mm | 84% | 1.3 m/s | 2.5 |
| 2005 🌧️ | 13.3°C | 10.2°C | 7.2°C | 21.1°C | 0.5°C | 232 mm | 88% | 1.3 m/s | 2.2 |
| 2004 | 13.5°C | 10.2°C | 6.8°C | 19.4°C | -1.5°C | 101 mm | 85% | 1.2 m/s | 2.3 |
| 2003 | 13.3°C | 9.6°C | 5.9°C | 21.1°C | -0.1°C | 136 mm | 82% | 1.3 m/s | 2.6 |
| 2002 | 11.2°C | 7.3°C | 3.5°C | 22.5°C | -2.8°C | 80 mm | 80% | 1.3 m/s | 2.8 |
| 2001 | 15.1°C | 10.8°C | 6.4°C | 22.4°C | -1.3°C | 42 mm | 78% | 1.2 m/s | 3 |
| 2000 | 12.5°C | 9.0°C | 5.5°C | 18.4°C | -0.1°C | 155 mm | 84% | 1.3 m/s | 2.5 |
| 1999 | 11.8°C | 7.9°C | 4.0°C | 18.0°C | -1.6°C | 98 mm | 79% | 1.4 m/s | 2.4 |
| 1998 | 11.5°C | 8.3°C | 5.1°C | 19.5°C | -1.1°C | 153 mm | 82% | 1.4 m/s | 2.3 |
| 1997 | 11.4°C | 7.7°C | 4.1°C | 18.0°C | -1.8°C | 24 mm | 79% | 1.2 m/s | 2.5 |
| 1996 | 10.8°C | 7.1°C | 3.5°C | 17.7°C | -1.7°C | 109 mm | 83% | 1.3 m/s | 2.6 |
| 1995 | 15.1°C | 11.2°C | 7.3°C | 21.4°C | -0.5°C | 81 mm | 82% | 1.1 m/s | 2.4 |
| 1994 | 13.3°C | 9.3°C | 5.4°C | 19.8°C | 0.9°C | 23 mm | 79% | 1.2 m/s | 2.8 |
| 1993 | 11.4°C | 7.0°C | 2.5°C | 18.7°C | -2.6°C | 114 mm | 78% | 1.4 m/s | 2.4 |
| 1992 | 11.7°C | 8.1°C | 4.4°C | 17.3°C | -1.9°C | 89 mm | 80% | 1.2 m/s | 2.4 |
| 1991 | 13.4°C | 10.0°C | 6.6°C | 19.6°C | -0.5°C | 93 mm | 85% | 1.3 m/s | 2.2 |
| 1990 | 13.6°C | 10.0°C | 6.4°C | 21.2°C | -1.3°C | 119 mm | 83% | 1.3 m/s | 2.1 |
| 1989 | 12.8°C | 8.7°C | 4.6°C | 18.8°C | 0.5°C | 53 mm | 81% | 1.2 m/s | 2.7 |
| 1988 | 10.6°C | 7.3°C | 3.9°C | 20.6°C | -2.6°C | 148 mm | 82% | 1.3 m/s | 2.5 |
| 1987 | 13.3°C | 9.2°C | 5.1°C | 21.0°C | -0.7°C | 121 mm | 83% | 1.1 m/s | 2.8 |
| 1986 | 11.3°C | 7.2°C | 3.1°C | 17.7°C | -2.5°C | 46 mm | 82% | 1.2 m/s | 2.5 |
| 1985 | 12.3°C | 8.4°C | 4.5°C | 21.2°C | -3.7°C | 64 mm | 77% | 1.3 m/s | 2.6 |
| 1984 | 12.1°C | 8.1°C | 4.2°C | 18.5°C | -1.4°C | 47 mm | 82% | 1.2 m/s | 2.9 |
| 1983 | 12.4°C | 8.8°C | 5.2°C | 21.7°C | -1.6°C | 48 mm | 81% | 1.3 m/s | — |
| 1982 | 12.4°C | 8.7°C | 4.9°C | 19.3°C | -1.7°C | 48 mm | 82% | 1.2 m/s | — |
| 1981 | 12.0°C | 8.2°C | 4.4°C | 16.7°C | -0.9°C | 167 mm | 85% | 1.3 m/s | — |
Actual recorded October data for each year, 1981–2025 — sourced from NASA POWER.
The average high in October is around 13°C with lows near 5.5°C (mean 9.3°C), based on 45 years of NASA POWER data.
October averages 93 mm of rainfall in Amherst, a relatively wet time of year. The wettest on record was 232 mm in 2005.
The hottest October reached 26.6°C in 2025. The coldest dipped to -3.7°C in 1985.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average October temperatures have risen by about 3.1°C. Daytime highs moved from 12.2°C to 15.3°C and overnight lows from 4.6°C to 7.6°C over the same span.
October is one of the warmer months of the year in Amherst and a relatively wet time of year, so plan for around 13°C daytime highs and 5.5°C at night.
Not quite — October is the 8th coolest month in Amherst, averaging 9.3°C.
For October in Amherst, pack warm layers and a jacket for chilly mornings, with typical highs of 13°C and lows of 5.5°C. Bring an umbrella or light rain jacket too.
Relative humidity in October averages 82% — quite humid.
Average wind speed in October is 1.2 m/s. The windiest October on record averaged 1.4 m/s (1993).
The wettest October on record was 2005 with 232 mm. On average, October sees 93 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 Amherst 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.
