October is close to Duncan's year-round average, with average highs near 13.4°C and lows around 7.6°C (mean 10.5°C). It is a relatively wet time of year, averaging 104 mm of rainfall and 83% relative humidity across the period.
October is close to Duncan's year-round average. Across 45 years of records, the warmest October in Duncan was 2022 — when the month averaged 13.5°C — while the coldest was 1984 at 8.4°C. Typical October days reach 13.4°C with nights near 7.6°C. The long-term trend is warming, about 0.2°C per decade.
October is a relatively wet time of year in Duncan, averaging 104 mm of rainfall. The wettest October on record was 2003 with 235 mm, while the driest was 2002 at 14 mm.
Relative humidity in Duncan during October averages 83%. The most humid October was 2024 at 90%, and the least humid was 1987 at 73%.
October receives about 2.2 kWh/m²/day of solar energy in Duncan. The sunniest October was 1987 at 2.8 kWh/m²/day, and the cloudiest was 1988 at 1.7.
Average wind speed in Duncan during October is 1.5 m/s. The windiest October was 1990 at 2 m/s, while the calmest was 1986 at 0.9 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 10.4°C | 10.2°C | 10.4°C | 10.9°C | 10.9°C | +0.5°C |
| Avg High | 13.5°C | 13.1°C | 13.3°C | 13.7°C | 13.6°C | +0.1°C |
| Avg Low | 7.4°C | 7.3°C | 7.5°C | 8.0°C | 8.1°C | +0.7°C |
| Avg Rain | 116 mm | 107 mm | 98 mm | 99 mm | 97 mm | -19 mm |
October temperatures in Duncan have risen by about 1.3°C between 1981–1985 and 2021–2025.
October has ranged from a record low of -4.7°C (1984) to a record high of 24°C (2022).
Rainfall in October is a relatively wet time of year, averaging 104 mm, with a wettest year of 235 mm.
A good time to visit Duncan
October is a good time to visit Duncan, with days averaging 13.4°C and nights around 7.6°C (mean 10.5°C, close to Duncan'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 | 12.2°C | 9.8°C | 7.5°C | 17.4°C | 4.5°C | 93 mm | 88% | 1.8 m/s | 2.1 |
| 2024 | 12.0°C | 9.7°C | 7.3°C | 17.1°C | 4.3°C | 130 mm | 90% | 1.7 m/s | 2.2 |
| 2023 | 14.2°C | 11.3°C | 8.3°C | 21.7°C | 3.9°C | 101 mm | 84% | 1.3 m/s | 2.4 |
| 2022 🔥 | 17.2°C | 13.5°C | 9.9°C | 24.0°C | 4.7°C | 68 mm | 81% | 1.3 m/s | 2.7 |
| 2021 | 12.1°C | 9.7°C | 7.3°C | 15.8°C | 2.9°C | 108 mm | 86% | 1.7 m/s | 2 |
| 2020 | 14.0°C | 11.1°C | 8.1°C | 21.5°C | -0.5°C | 83 mm | 82% | 1.6 m/s | 2.2 |
| 2019 | 12.0°C | 9.4°C | 6.7°C | 16.4°C | 2.6°C | 82 mm | 79% | 1.6 m/s | 2.3 |
| 2018 | 14.1°C | 11.1°C | 8.0°C | 18.4°C | 5.3°C | 79 mm | 83% | 1.3 m/s | 2.5 |
| 2017 | 14.0°C | 10.7°C | 7.4°C | 18.2°C | 4.9°C | 79 mm | 80% | 1.5 m/s | 2.5 |
| 2016 | 12.8°C | 10.5°C | 8.3°C | 16.0°C | 5.4°C | 194 mm | 88% | 1.9 m/s | 1.8 |
| 2015 | 15.6°C | 12.6°C | 9.6°C | 19.6°C | 6.2°C | 79 mm | 84% | 1.3 m/s | 2.1 |
| 2014 | 15.3°C | 12.7°C | 10.1°C | 22.2°C | 7.0°C | 154 mm | 87% | 1.5 m/s | 1.9 |
| 2013 | 13.5°C | 10.3°C | 7.1°C | 17.1°C | 4.6°C | 29 mm | 83% | 1.2 m/s | 2.5 |
| 2012 | 12.9°C | 10.3°C | 7.8°C | 21.5°C | 3.8°C | 160 mm | 84% | 1.5 m/s | 2.1 |
| 2011 | 13.1°C | 10.1°C | 7.1°C | 15.6°C | 4.4°C | 71 mm | 85% | 1.5 m/s | 2.1 |
| 2010 | 13.9°C | 11.0°C | 8.1°C | 20.7°C | 5.2°C | 65 mm | 84% | 1.5 m/s | 2.4 |
| 2009 | 12.9°C | 10.0°C | 7.1°C | 17.2°C | 4.2°C | 101 mm | 79% | 1.6 m/s | 2.2 |
| 2008 | 12.4°C | 9.7°C | 6.9°C | 20.3°C | 4.7°C | 76 mm | 84% | 1.5 m/s | 2.2 |
| 2007 | 11.9°C | 9.3°C | 6.7°C | 17.0°C | 3.9°C | 90 mm | 87% | 1.6 m/s | 1.9 |
| 2006 | 14.0°C | 10.7°C | 7.5°C | 19.1°C | 0.7°C | 43 mm | 78% | 1.4 m/s | 2.5 |
| 2005 | 13.2°C | 10.6°C | 7.9°C | 16.2°C | 4.9°C | 124 mm | 89% | 1.6 m/s | 1.9 |
| 2004 | 14.0°C | 11.2°C | 8.4°C | 20.7°C | 4.0°C | 95 mm | 85% | 1.5 m/s | 2.2 |
| 2003 🌧️ | 14.4°C | 11.6°C | 8.8°C | 22.0°C | -0.1°C | 235 mm | 84% | 1.6 m/s | 2 |
| 2002 | 14.4°C | 10.9°C | 7.3°C | 20.5°C | 2.5°C | 14 mm | 77% | 1.1 m/s | 2.5 |
| 2001 | 12.2°C | 9.5°C | 6.8°C | 17.7°C | 3.4°C | 99 mm | 84% | 1.8 m/s | 2.1 |
| 2000 | 13.3°C | 10.5°C | 7.7°C | 19.1°C | 5.2°C | 101 mm | 83% | 1.6 m/s | 2.3 |
| 1999 | 13.0°C | 9.8°C | 6.7°C | 18.9°C | 3.6°C | 112 mm | 82% | 1.5 m/s | 2.5 |
| 1998 | 13.1°C | 10.5°C | 7.9°C | 18.9°C | 5.1°C | 117 mm | 87% | 1.5 m/s | 2 |
| 1997 | 12.6°C | 10.1°C | 7.7°C | 17.9°C | 5.0°C | 174 mm | 89% | 1.8 m/s | 2.1 |
| 1996 | 12.2°C | 9.4°C | 6.5°C | 18.9°C | 2.4°C | 174 mm | 84% | 1.6 m/s | 2.1 |
| 1995 | 12.7°C | 10.0°C | 7.2°C | 17.0°C | 2.7°C | 107 mm | 85% | 1.7 m/s | 2.2 |
| 1994 | 13.7°C | 10.5°C | 7.4°C | 19.2°C | 4.0°C | 86 mm | 79% | 1.5 m/s | 2.4 |
| 1993 | 15.7°C | 12.2°C | 8.8°C | 23.4°C | 5.9°C | 56 mm | 79% | 1 m/s | 2.4 |
| 1992 | 13.7°C | 10.9°C | 8.1°C | 23.1°C | 3.1°C | 85 mm | 82% | 1.6 m/s | 2 |
| 1991 | 12.8°C | 9.8°C | 6.7°C | 20.8°C | -0.6°C | 26 mm | 75% | 1.4 m/s | 2.6 |
| 1990 | 11.7°C | 9.0°C | 6.4°C | 15.8°C | 4.0°C | 130 mm | 86% | 2 m/s | 2 |
| 1989 | 13.4°C | 10.4°C | 7.5°C | 18.1°C | 3.8°C | 96 mm | 82% | 1.3 m/s | 2.3 |
| 1988 | 15.0°C | 11.7°C | 8.4°C | 21.5°C | 4.1°C | 86 mm | 83% | 1.1 m/s | 1.7 |
| 1987 | 16.1°C | 12.1°C | 8.2°C | 22.5°C | 4.8°C | 21 mm | 73% | 1 m/s | 2.8 |
| 1986 | 15.0°C | 11.7°C | 8.4°C | 19.3°C | 6.0°C | 66 mm | 80% | 0.9 m/s | 2.2 |
| 1985 | 11.9°C | 9.2°C | 6.6°C | 18.4°C | 1.2°C | 193 mm | 84% | 1.9 m/s | 2 |
| 1984 ❄️ | 11.1°C | 8.4°C | 5.8°C | 17.8°C | -4.7°C | 171 mm | 83% | 1.7 m/s | 2 |
| 1983 | 12.6°C | 9.7°C | 6.8°C | 15.5°C | 5.2°C | 73 mm | 83% | 1.3 m/s | — |
| 1982 | 12.9°C | 10.1°C | 7.4°C | 18.7°C | 3.0°C | 152 mm | 85% | 1.7 m/s | — |
| 1981 | 13.2°C | 10.2°C | 7.3°C | 18.2°C | 4.9°C | 183 mm | 84% | 1.5 m/s | — |
Actual recorded October data for each year, 1981–2025 — sourced from NASA POWER.
The average high in October is around 13.4°C with lows near 7.6°C (mean 10.5°C), based on 45 years of NASA POWER data.
October averages 104 mm of rainfall in Duncan, a relatively wet time of year. The wettest on record was 235 mm in 2003.
The hottest October reached 24°C in 2022. The coldest dipped to -4.7°C in 1984.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average October temperatures have risen by about 1.3°C. Daytime highs moved from 12.3°C to 13.5°C and overnight lows from 6.8°C to 8.1°C over the same span.
October is close to Duncan's year-round average and a relatively wet time of year, so plan for around 13.4°C daytime highs and 7.6°C at night.
Not quite — October is the 7th coolest month in Duncan, averaging 10.5°C.
For October in Duncan, pack warm layers and a jacket for chilly mornings, with typical highs of 13.4°C and lows of 7.6°C. Bring an umbrella or light rain jacket too.
Relative humidity in October averages 83% — quite humid.
Average wind speed in October is 1.5 m/s. The windiest October on record averaged 2 m/s (1990).
The wettest October on record was 2003 with 235 mm. On average, October sees 104 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 Duncan 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.
