October is one of the warmer months of the year in Hamden, with average highs near 17.2°C and lows around 6.3°C (mean 11.8°C). It is about average for rainfall, averaging 111 mm of rainfall and 77% relative humidity across the period.
October is one of the warmer months of the year in Hamden. Across 45 years of records, the warmest October in Hamden was 2017 — when the month averaged 16°C — while the coldest was 1988 at 8.7°C. Typical October days reach 17.2°C with nights near 6.3°C. The long-term trend is warming, about 0.7°C per decade.
October is about average for rainfall in Hamden, averaging 111 mm of rainfall. The wettest October on record was 2005 with 404 mm, while the driest was 2024 at 10 mm.
Relative humidity in Hamden during October averages 77%. The most humid October was 2005 at 84%, and the least humid was 2024 at 67%.
October receives about 3 kWh/m²/day of solar energy in Hamden. The sunniest October was 2024 at 3.6 kWh/m²/day, and the cloudiest were 2005 and 2012 at 2.5.
Average wind speed in Hamden during October is 0.2 m/s. The windiest Octobers were 2023, 2024 and 2025, among others at 0.2 m/s, while the calmest were 2023, 2024 and 2025, among others at 0.2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 10.6°C | 11.1°C | 11.4°C | 12.6°C | 13.2°C | +2.6°C |
| Avg High | 16.4°C | 16.7°C | 16.8°C | 17.8°C | 18.6°C | +2.2°C |
| Avg Low | 4.9°C | 5.5°C | 6.1°C | 7.4°C | 7.7°C | +2.8°C |
| Avg Rain | 103 mm | 111 mm | 122 mm | 110 mm | 103 mm | 0 mm |
October temperatures in Hamden have risen by about 2.1°C between 1981–1985 and 2021–2025.
October has ranged from a record low of -6.1°C (2020) to a record high of 31.1°C (2019).
Rainfall in October is about average for rainfall, averaging 111 mm, with a wettest year of 404 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.5°C per decade while lows rose 0.8°C per decade, narrowing the gap between day and night.
A good time to visit Hamden
October is a good time to visit Hamden, with days averaging 17.2°C and nights around 6.3°C (mean 11.8°C, warmer than Hamden'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 | 18.0°C | 12.6°C | 7.3°C | 29.8°C | 0.4°C | 136 mm | 74% | 0.2 m/s | 3.3 |
| 2024 | 20.5°C | 13.9°C | 7.2°C | 28.5°C | 1.8°C | 10 mm | 67% | 0.2 m/s | 3.6 |
| 2023 | 18.6°C | 13.4°C | 8.3°C | 27.8°C | 1.1°C | 89 mm | 83% | 0.2 m/s | 3 |
| 2022 | 17.4°C | 12.1°C | 6.8°C | 23.7°C | -0.8°C | 113 mm | 77% | 0.2 m/s | 3 |
| 2021 | 19.6°C | 14.5°C | 9.4°C | 25.2°C | 2.2°C | 149 mm | 83% | 0.2 m/s | 2.9 |
| 2020 | 17.6°C | 12.5°C | 7.3°C | 25.0°C | -6.1°C | 120 mm | 79% | 0.2 m/s | 2.8 |
| 2019 | 18.0°C | 13.1°C | 8.2°C | 31.1°C | 2.3°C | 174 mm | 78% | 0.2 m/s | 2.6 |
| 2018 | 16.1°C | 11.5°C | 6.8°C | 26.9°C | -2.4°C | 114 mm | 83% | 0.2 m/s | 2.7 |
| 2017 🔥 | 21.8°C | 16.0°C | 10.3°C | 27.7°C | 2.3°C | 172 mm | 75% | 0.2 m/s | 3.2 |
| 2016 | 18.8°C | 12.9°C | 7.0°C | 27.8°C | -1.0°C | 76 mm | 74% | 0.2 m/s | 3.2 |
| 2015 | 16.7°C | 11.2°C | 5.7°C | 23.5°C | -3.9°C | 78 mm | 73% | 0.2 m/s | 3.2 |
| 2014 | 17.6°C | 12.8°C | 8.1°C | 25.2°C | 0.2°C | 105 mm | 78% | 0.2 m/s | 2.8 |
| 2013 | 18.8°C | 13.0°C | 7.2°C | 27.2°C | -0.6°C | 35 mm | 74% | 0.2 m/s | 3 |
| 2012 | 17.7°C | 12.9°C | 8.2°C | 26.3°C | -2.4°C | 96 mm | 82% | 0.2 m/s | 2.5 |
| 2011 | 16.0°C | 11.2°C | 6.5°C | 25.2°C | -3.5°C | 124 mm | 84% | 0.2 m/s | 3 |
| 2010 | 16.4°C | 11.4°C | 6.4°C | 22.4°C | 0.8°C | 125 mm | 78% | 0.2 m/s | 2.9 |
| 2009 | 15.3°C | 10.5°C | 5.6°C | 22.4°C | -1.0°C | 147 mm | 79% | 0.2 m/s | 2.7 |
| 2008 | 16.0°C | 10.4°C | 4.9°C | 24.1°C | -1.9°C | 78 mm | 77% | 0.2 m/s | 3.3 |
| 2007 | 20.8°C | 15.3°C | 9.7°C | 30.5°C | -0.7°C | 112 mm | 79% | 0.2 m/s | 2.8 |
| 2006 | 16.3°C | 10.9°C | 5.5°C | 24.6°C | -1.5°C | 158 mm | 78% | 0.2 m/s | 3.1 |
| 2005 🌧️ | 16.6°C | 12.1°C | 7.7°C | 27.9°C | -1.9°C | 404 mm | 84% | 0.2 m/s | 2.5 |
| 2004 | 15.8°C | 10.9°C | 6.1°C | 22.9°C | 1.4°C | 50 mm | 81% | 0.2 m/s | 3 |
| 2003 | 15.4°C | 10.1°C | 4.9°C | 25.2°C | -1.5°C | 128 mm | 80% | 0.2 m/s | 2.8 |
| 2002 | 15.7°C | 10.5°C | 5.3°C | 29.0°C | -2.9°C | 102 mm | 76% | 0.2 m/s | 2.9 |
| 2001 | 18.3°C | 12.2°C | 6.1°C | 25.8°C | -2.8°C | 18 mm | 69% | 0.2 m/s | 3.5 |
| 2000 | 17.4°C | 11.5°C | 5.6°C | 26.0°C | -2.1°C | 25 mm | 72% | 0.2 m/s | 3 |
| 1999 | 15.9°C | 10.2°C | 4.5°C | 21.8°C | -1.9°C | 83 mm | 80% | 0.2 m/s | 3.4 |
| 1998 | 16.7°C | 11.4°C | 6.1°C | 23.4°C | 1.1°C | 107 mm | 75% | 0.2 m/s | 3 |
| 1997 | 17.2°C | 11.0°C | 4.9°C | 28.3°C | -2.4°C | 48 mm | 69% | 0.2 m/s | 3.1 |
| 1996 | 15.9°C | 10.4°C | 4.9°C | 22.0°C | -1.9°C | 190 mm | 79% | 0.2 m/s | 3.3 |
| 1995 | 18.8°C | 13.1°C | 7.4°C | 26.4°C | 1.2°C | 218 mm | 80% | 0.2 m/s | 3.1 |
| 1994 | 16.6°C | 10.8°C | 4.9°C | 21.8°C | -0.2°C | 33 mm | 74% | 0.2 m/s | 3.4 |
| 1993 | 14.9°C | 9.7°C | 4.5°C | 23.4°C | -3.4°C | 108 mm | 78% | 0.2 m/s | 3.1 |
| 1992 | 15.6°C | 9.7°C | 3.9°C | 24.4°C | -1.8°C | 53 mm | 71% | 0.2 m/s | 3 |
| 1991 | 17.2°C | 11.7°C | 6.2°C | 24.3°C | -0.8°C | 80 mm | 80% | 0.2 m/s | 3 |
| 1990 | 18.4°C | 13.3°C | 8.2°C | 26.8°C | -2.4°C | 187 mm | 77% | 0.2 m/s | 3.2 |
| 1989 | 16.8°C | 11.4°C | 6.0°C | 23.3°C | -0.3°C | 218 mm | 81% | 0.2 m/s | 3 |
| 1988 ❄️ | 14.2°C | 8.7°C | 3.2°C | 25.4°C | -4.7°C | 75 mm | 73% | 0.2 m/s | 3 |
| 1987 | 14.7°C | 8.9°C | 3.2°C | 21.0°C | -1.9°C | 106 mm | 79% | 0.2 m/s | 3.3 |
| 1986 | 16.9°C | 10.9°C | 5.0°C | 26.1°C | -1.9°C | 68 mm | 73% | 0.2 m/s | 3 |
| 1985 | 17.1°C | 11.4°C | 5.8°C | 23.3°C | -3.0°C | 52 mm | 75% | 0.2 m/s | 3.1 |
| 1984 | 19.3°C | 13.3°C | 7.4°C | 25.3°C | -2.7°C | 76 mm | 74% | 0.2 m/s | 3.2 |
| 1983 | 16.4°C | 10.9°C | 5.4°C | 25.6°C | -3.3°C | 146 mm | 76% | 0.2 m/s | — |
| 1982 | 17.7°C | 11.3°C | 5.0°C | 27.1°C | -3.2°C | 49 mm | 69% | 0.2 m/s | — |
| 1981 | 14.8°C | 9.0°C | 3.3°C | 20.2°C | -1.5°C | 138 mm | 76% | 0.2 m/s | — |
Actual recorded October data for each year, 1981–2025 — sourced from NASA POWER.
The average high in October is around 17.2°C with lows near 6.3°C (mean 11.8°C), based on 45 years of NASA POWER data.
October averages 111 mm of rainfall in Hamden, about average for rainfall. The wettest on record was 404 mm in 2005.
The hottest October reached 31.1°C in 2019. The coldest dipped to -6.1°C in 2020.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average October temperatures have risen by about 2.1°C. Daytime highs moved from 17.1°C to 18.8°C and overnight lows from 5.4°C to 7.8°C over the same span.
October is one of the warmer months of the year in Hamden and about average for rainfall, so plan for around 17.2°C daytime highs and 6.3°C at night.
Not quite — October is the 7th coolest month in Hamden, averaging 11.8°C.
For October in Hamden, pack warm layers and a jacket for chilly mornings, with typical highs of 17.2°C and lows of 6.3°C. Bring an umbrella or light rain jacket too.
Relative humidity in October averages 77% — quite humid.
Average wind speed in October is 0.2 m/s. The windiest October on record averaged 0.2 m/s (1981).
The wettest October on record was 2005 with 404 mm. On average, October sees 111 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 Hamden 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.
