October is close to Caldwell's year-round average, with average highs near 18.6°C and lows around 5.3°C (mean 12°C). It is about average for rainfall, averaging 23 mm of rainfall and 48% relative humidity across the period.
October is close to Caldwell's year-round average. Across 45 years of records, the warmest October in Caldwell was 1988 — when the month averaged 16.8°C — while the coldest was 2019 at 8.1°C. Typical October days reach 18.6°C with nights near 5.3°C. The long-term trend is warming, about 0.3°C per decade.
October is about average for rainfall in Caldwell, averaging 23 mm of rainfall. The wettest October on record was 2000 with 62 mm, while the driest was 1988 at 0 mm.
Relative humidity in Caldwell during October averages 48%. The most humid October was 2009 at 58%, and the least humid was 1987 at 31%.
October receives about 3.5 kWh/m²/day of solar energy in Caldwell. The sunniest Octobers were 1999, 2002 and 2022, among others at 3.9 kWh/m²/day, and the cloudiest was 2016 at 2.9.
Average wind speed in Caldwell during October is 2.1 m/s. The windiest Octobers were 1997 and 2021 at 2.5 m/s, while the calmest was 1987 at 1.6 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 11.5°C | 11.6°C | 11.6°C | 12.1°C | 13.2°C | +1.7°C |
| Avg High | 18.3°C | 18.4°C | 18.1°C | 18.5°C | 20.1°C | +1.8°C |
| Avg Low | 4.8°C | 4.8°C | 5.1°C | 5.7°C | 6.4°C | +1.6°C |
| Avg Rain | 22 mm | 20 mm | 25 mm | 25 mm | 25 mm | +4 mm |
October temperatures in Caldwell have risen by about 3.4°C between 1981–1985 and 2021–2025.
October has ranged from a record low of -7.5°C (2019) to a record high of 35°C (2010).
Rainfall in October is about average for rainfall, averaging 23 mm, with a wettest year of 62 mm.
A good time to visit Caldwell
October is a good time to visit Caldwell, with days averaging 18.6°C and nights around 5.3°C (mean 12°C, close to Caldwell's yearly average) and low rainfall. June and August 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 | 18.3°C | 11.4°C | 4.6°C | 28.3°C | -1.1°C | 33 mm | 54% | 2.2 m/s | 3.5 |
| 2024 | 21.5°C | 14.1°C | 6.7°C | 31.3°C | -1.3°C | 16 mm | 44% | 2 m/s | 3.6 |
| 2023 | 19.6°C | 13.1°C | 6.6°C | 30.4°C | -5.0°C | 25 mm | 51% | 1.9 m/s | 3.5 |
| 2022 | 22.0°C | 14.9°C | 7.9°C | 28.9°C | -0.8°C | 19 mm | 37% | 1.7 m/s | 3.9 |
| 2021 | 19.1°C | 12.8°C | 6.5°C | 30.1°C | 0.1°C | 44 mm | 49% | 2.5 m/s | 3.1 |
| 2020 | 20.2°C | 13.0°C | 5.8°C | 30.9°C | -5.7°C | 13 mm | 42% | 2.2 m/s | 3.7 |
| 2019 ❄️ | 14.5°C | 8.1°C | 1.6°C | 26.3°C | -7.5°C | 11 mm | 44% | 2.3 m/s | 3.6 |
| 2018 | 17.7°C | 11.6°C | 5.5°C | 25.5°C | -0.5°C | 25 mm | 52% | 1.8 m/s | 3.3 |
| 2017 | 16.5°C | 10.1°C | 3.6°C | 24.0°C | -2.1°C | 15 mm | 50% | 2.1 m/s | 3.6 |
| 2016 | 18.9°C | 13.2°C | 7.5°C | 27.4°C | 2.4°C | 28 mm | 49% | 2.4 m/s | 2.9 |
| 2015 | 22.3°C | 16.0°C | 9.7°C | 32.8°C | 2.9°C | 43 mm | 50% | 2 m/s | 3.4 |
| 2014 | 21.5°C | 14.8°C | 8.0°C | 28.9°C | 1.1°C | 14 mm | 46% | 2.1 m/s | 3.6 |
| 2013 | 16.9°C | 10.0°C | 3.1°C | 26.2°C | -0.1°C | 16 mm | 52% | 2 m/s | 3.8 |
| 2012 | 18.7°C | 11.9°C | 5.2°C | 28.1°C | -2.5°C | 23 mm | 43% | 2 m/s | 3.6 |
| 2011 | 18.3°C | 12.2°C | 6.1°C | 31.5°C | -2.9°C | 38 mm | 53% | 1.9 m/s | 3.3 |
| 2010 | 19.8°C | 13.5°C | 7.1°C | 35.0°C | -1.0°C | 34 mm | 48% | 2.2 m/s | 3.3 |
| 2009 | 14.2°C | 8.5°C | 2.8°C | 26.1°C | -3.5°C | 37 mm | 58% | 2.1 m/s | 3 |
| 2008 | 18.3°C | 11.7°C | 5.1°C | 31.4°C | -3.3°C | 14 mm | 48% | 2.1 m/s | 3.5 |
| 2007 | 16.6°C | 10.5°C | 4.4°C | 27.2°C | 0.5°C | 41 mm | 54% | 2.3 m/s | 3.2 |
| 2006 | 17.7°C | 11.1°C | 4.4°C | 26.5°C | -4.3°C | 10 mm | 46% | 2.2 m/s | 3.6 |
| 2005 | 18.8°C | 12.3°C | 5.7°C | 29.9°C | 0.2°C | 21 mm | 51% | 1.9 m/s | 3.5 |
| 2004 | 18.4°C | 12.0°C | 5.6°C | 30.5°C | -2.3°C | 45 mm | 52% | 2.2 m/s | 3.3 |
| 2003 | 22.4°C | 15.6°C | 8.7°C | 31.3°C | -3.7°C | 2 mm | 37% | 2.1 m/s | 3.7 |
| 2002 | 17.3°C | 10.4°C | 3.5°C | 25.2°C | -7.1°C | 5 mm | 44% | 1.9 m/s | 3.9 |
| 2001 | 19.3°C | 12.5°C | 5.7°C | 32.5°C | -2.7°C | 19 mm | 44% | 2.3 m/s | 3.6 |
| 2000 🌧️ | 17.7°C | 11.2°C | 4.7°C | 28.1°C | -2.3°C | 62 mm | 53% | 1.9 m/s | 3.3 |
| 1999 | 20.9°C | 13.0°C | 5.1°C | 28.6°C | -0.8°C | 10 mm | 35% | 2 m/s | 3.9 |
| 1998 | 17.1°C | 10.6°C | 4.2°C | 26.1°C | -2.9°C | 5 mm | 49% | 2.3 m/s | 3.7 |
| 1997 | 17.5°C | 10.9°C | 4.4°C | 32.2°C | -2.5°C | 17 mm | 47% | 2.5 m/s | 3.6 |
| 1996 | 18.0°C | 11.5°C | 5.0°C | 31.8°C | -4.1°C | 29 mm | 47% | 2.1 m/s | 3.4 |
| 1995 | 17.4°C | 10.6°C | 3.8°C | 26.4°C | -3.4°C | 18 mm | 48% | 2.3 m/s | 3.7 |
| 1994 | 17.4°C | 11.0°C | 4.5°C | 26.9°C | -2.3°C | 26 mm | 50% | 2.3 m/s | 3.6 |
| 1993 | 18.4°C | 11.8°C | 5.2°C | 29.7°C | -2.1°C | 16 mm | 52% | 1.7 m/s | 3.5 |
| 1992 | 20.2°C | 13.4°C | 6.6°C | 33.9°C | -0.1°C | 26 mm | 43% | 1.9 m/s | 3.5 |
| 1991 | 19.0°C | 12.1°C | 5.2°C | 30.9°C | -6.8°C | 33 mm | 41% | 2 m/s | 3.6 |
| 1990 | 18.1°C | 11.0°C | 3.9°C | 29.9°C | -2.8°C | 18 mm | 46% | 2.4 m/s | 3.4 |
| 1989 | 17.3°C | 10.9°C | 4.4°C | 26.4°C | -4.8°C | 25 mm | 50% | 1.9 m/s | 3.5 |
| 1988 🔥 | 24.3°C | 16.8°C | 9.3°C | 31.1°C | 2.0°C | 0 mm | 35% | 1.8 m/s | 3.8 |
| 1987 | 22.2°C | 14.5°C | 6.9°C | 32.3°C | 0.1°C | 1 mm | 31% | 1.6 m/s | 3.9 |
| 1986 | 19.2°C | 11.9°C | 4.7°C | 25.3°C | 0.4°C | 9 mm | 50% | 1.9 m/s | 3.8 |
| 1985 | 16.3°C | 9.5°C | 2.8°C | 24.9°C | -5.4°C | 27 mm | 53% | 2.2 m/s | 3.3 |
| 1984 | 14.6°C | 8.5°C | 2.5°C | 30.3°C | -3.9°C | 25 mm | 55% | 2.2 m/s | 3.1 |
| 1983 | 18.8°C | 12.2°C | 5.5°C | 24.5°C | 0.1°C | 25 mm | 54% | 1.8 m/s | — |
| 1982 | 16.2°C | 9.9°C | 3.6°C | 24.6°C | -3.1°C | 51 mm | 56% | 2.1 m/s | — |
| 1981 | 15.8°C | 9.5°C | 3.1°C | 24.1°C | -1.1°C | 31 mm | 53% | 2 m/s | — |
Actual recorded October data for each year, 1981–2025 — sourced from NASA POWER.
The average high in October is around 18.6°C with lows near 5.3°C (mean 12°C), based on 45 years of NASA POWER data.
October averages 23 mm of rainfall in Caldwell, about average for rainfall. The wettest on record was 62 mm in 2000.
The hottest October reached 35°C in 2010. The coldest dipped to -7.5°C in 2019.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average October temperatures have risen by about 3.4°C. Daytime highs moved from 16.3°C to 20.1°C and overnight lows from 3.5°C to 6.5°C over the same span.
October is close to Caldwell's year-round average and about average for rainfall, so plan for around 18.6°C daytime highs and 5.3°C at night.
Not quite — October is the 7th coolest month in Caldwell, averaging 12°C.
For October in Caldwell, pack warm layers and a jacket for chilly mornings, with typical highs of 18.6°C and lows of 5.3°C.
Relative humidity in October averages 48% — relatively dry.
Average wind speed in October is 2.1 m/s. The windiest October on record averaged 2.5 m/s (1997).
The wettest October on record was 2000 with 62 mm. On average, October sees 23 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 Caldwell 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.
