October is one of the warmer months of the year in Tempe, with average highs near 31°C and lows around 16°C (mean 23.5°C). It is about average for rainfall, averaging 20 mm of rainfall and 32% relative humidity across the period.
October is one of the warmer months of the year in Tempe. Across 45 years of records, the warmest October in Tempe was 2024 — when the month averaged 27.4°C — while the coldest was 1984 at 19.4°C. Typical October days reach 31°C with nights near 16°C. The long-term trend is warming, about 0.6°C per decade.
October is about average for rainfall in Tempe, averaging 20 mm of rainfall. The wettest October on record was 2000 with 98 mm, while the driest were 2017 and 2019 at 0 mm.
Relative humidity in Tempe during October averages 32%. The most humid October was 2018 at 54%, and the least humid was 1999 at 17%.
October receives about 4.9 kWh/m²/day of solar energy in Tempe. The sunniest October was 2019 at 5.5 kWh/m²/day, and the cloudiest were 2000 and 2018 at 4.3.
Average wind speed in Tempe during October is 2 m/s. The windiest Octobers were 1982, 1998 and 2008 at 2.3 m/s, while the calmest was 2014 at 1.6 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 22.4°C | 23.3°C | 23.3°C | 24.1°C | 25.0°C | +2.6°C |
| Avg High | 29.7°C | 31.2°C | 30.6°C | 31.5°C | 32.6°C | +2.9°C |
| Avg Low | 15.0°C | 15.3°C | 15.9°C | 16.7°C | 17.4°C | +2.4°C |
| Avg Rain | 29 mm | 14 mm | 19 mm | 20 mm | 19 mm | -10 mm |
October temperatures in Tempe have risen by about 3.4°C between 1981–1985 and 2021–2025.
October has ranged from a record low of 2.9°C (1991) to a record high of 43.5°C (2024).
Rainfall in October is about average for rainfall, averaging 20 mm, with a wettest year of 98 mm.
One of the best times to visit Tempe
October is one of the best times to visit Tempe. Expect days averaging 31°C and nights around 16°C (mean 23.5°C) — warmer than Tempe's yearly average — with low rainfall (20 mm), so conditions are generally comfortable for sightseeing and outdoor plans.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 31.3°C | 24.1°C | 16.8°C | 37.4°C | 13.0°C | 66 mm | 40% | 1.7 m/s | 4.8 |
| 2024 🔥 | 35.4°C | 27.4°C | 19.5°C | 43.5°C | 9.2°C | 4 mm | 19% | 1.8 m/s | 5.1 |
| 2023 | 33.8°C | 26.1°C | 18.5°C | 39.9°C | 10.6°C | 1 mm | 24% | 1.9 m/s | 5.3 |
| 2022 | 30.5°C | 23.7°C | 16.9°C | 36.2°C | 7.9°C | 31 mm | 39% | 1.9 m/s | 4.9 |
| 2021 | 30.0°C | 22.5°C | 15.0°C | 35.6°C | 8.4°C | 9 mm | 35% | 1.9 m/s | 5.1 |
| 2020 | 34.6°C | 26.0°C | 17.5°C | 41.0°C | 5.9°C | 1 mm | 18% | 1.8 m/s | 5.2 |
| 2019 | 30.9°C | 22.8°C | 14.7°C | 36.1°C | 5.3°C | 0 mm | 25% | 2.1 m/s | 5.5 |
| 2018 | 27.8°C | 21.9°C | 16.0°C | 32.4°C | 10.8°C | 98 mm | 54% | 2 m/s | 4.3 |
| 2017 | 34.2°C | 26.2°C | 18.2°C | 37.7°C | 13.9°C | 0 mm | 19% | 2.1 m/s | 5.3 |
| 2016 | 33.8°C | 26.4°C | 19.0°C | 37.2°C | 13.2°C | 7 mm | 28% | 1.8 m/s | 5 |
| 2015 | 31.2°C | 24.7°C | 18.3°C | 40.1°C | 10.1°C | 34 mm | 43% | 1.9 m/s | 4.5 |
| 2014 | 31.9°C | 24.6°C | 17.3°C | 36.4°C | 13.7°C | 15 mm | 40% | 1.6 m/s | 4.8 |
| 2013 | 29.8°C | 21.8°C | 13.9°C | 34.9°C | 8.0°C | 2 mm | 24% | 2 m/s | 5.4 |
| 2012 | 32.4°C | 24.5°C | 16.6°C | 39.4°C | 10.8°C | 4 mm | 25% | 1.8 m/s | 5.3 |
| 2011 | 32.6°C | 24.6°C | 16.7°C | 37.5°C | 10.5°C | 7 mm | 24% | 2 m/s | 5.1 |
| 2010 | 30.5°C | 23.6°C | 16.7°C | 40.3°C | 11.1°C | 28 mm | 40% | 1.9 m/s | 4.9 |
| 2009 | 29.2°C | 21.7°C | 14.2°C | 38.6°C | 4.6°C | 0 mm | 23% | 2 m/s | 5.2 |
| 2008 | 32.2°C | 24.0°C | 15.7°C | 37.5°C | 5.4°C | 3 mm | 23% | 2.3 m/s | 5.2 |
| 2007 | 31.5°C | 23.7°C | 15.9°C | 35.7°C | 10.4°C | 1 mm | 24% | 2.1 m/s | 5.2 |
| 2006 | 29.6°C | 22.3°C | 15.1°C | 36.7°C | 8.6°C | 14 mm | 34% | 2 m/s | 4.8 |
| 2005 | 31.1°C | 24.0°C | 16.9°C | 37.2°C | 11.7°C | 12 mm | 34% | 2 m/s | 4.9 |
| 2004 | 29.0°C | 21.7°C | 14.4°C | 36.2°C | 6.5°C | 30 mm | 39% | 2 m/s | 4.9 |
| 2003 | 34.5°C | 26.8°C | 19.0°C | 40.2°C | 10.8°C | 7 mm | 27% | 1.9 m/s | 4.9 |
| 2002 | 29.1°C | 22.1°C | 15.1°C | 35.2°C | 9.2°C | 12 mm | 33% | 1.7 m/s | 4.8 |
| 2001 | 32.3°C | 24.9°C | 17.5°C | 36.9°C | 11.1°C | 8 mm | 28% | 1.9 m/s | 4.8 |
| 2000 🌧️ | 27.9°C | 21.6°C | 15.2°C | 40.2°C | 6.4°C | 98 mm | 46% | 2 m/s | 4.3 |
| 1999 | 34.4°C | 25.4°C | 16.3°C | 38.8°C | 9.2°C | 2 mm | 17% | 2.1 m/s | 5.3 |
| 1998 | 30.2°C | 22.6°C | 15.0°C | 37.7°C | 8.8°C | 21 mm | 30% | 2.3 m/s | 4.9 |
| 1997 | 30.1°C | 22.0°C | 14.0°C | 40.4°C | 4.3°C | 11 mm | 30% | 2.1 m/s | 5 |
| 1996 | 30.1°C | 22.5°C | 14.9°C | 39.6°C | 4.3°C | 5 mm | 29% | 2.1 m/s | 4.9 |
| 1995 | 32.4°C | 23.9°C | 15.4°C | 37.4°C | 10.2°C | 3 mm | 23% | 1.9 m/s | 5.2 |
| 1994 | 29.0°C | 21.6°C | 14.2°C | 34.5°C | 6.2°C | 22 mm | 33% | 2 m/s | 4.9 |
| 1993 | 29.7°C | 22.5°C | 15.3°C | 38.8°C | 8.0°C | 32 mm | 36% | 2 m/s | 4.8 |
| 1992 | 32.0°C | 24.2°C | 16.4°C | 37.4°C | 11.9°C | 11 mm | 28% | 1.9 m/s | 4.8 |
| 1991 | 32.2°C | 24.5°C | 16.8°C | 38.8°C | 2.9°C | 26 mm | 28% | 2 m/s | 4.8 |
| 1990 | 31.6°C | 23.3°C | 15.1°C | 35.7°C | 9.8°C | 4 mm | 30% | 2.1 m/s | 5.1 |
| 1989 | 30.0°C | 22.5°C | 15.1°C | 36.0°C | 5.5°C | 21 mm | 34% | 2.1 m/s | 4.8 |
| 1988 | 32.7°C | 25.5°C | 18.3°C | 38.5°C | 14.9°C | 40 mm | 40% | 1.9 m/s | 4.7 |
| 1987 | 31.8°C | 24.9°C | 17.9°C | 39.0°C | 14.2°C | 51 mm | 35% | 1.9 m/s | 4.6 |
| 1986 | 28.7°C | 21.2°C | 13.7°C | 33.5°C | 8.1°C | 34 mm | 39% | 2 m/s | 4.7 |
| 1985 | 29.1°C | 22.0°C | 14.9°C | 35.2°C | 11.6°C | 36 mm | 45% | 2 m/s | 4.5 |
| 1984 ❄️ | 26.7°C | 19.4°C | 12.1°C | 33.6°C | 5.8°C | 24 mm | 45% | 1.8 m/s | 4.4 |
| 1983 | 29.4°C | 22.7°C | 16.0°C | 32.4°C | 13.3°C | 26 mm | 52% | 1.9 m/s | — |
| 1982 | 30.5°C | 22.0°C | 13.5°C | 35.1°C | 8.4°C | 1 mm | 23% | 2.3 m/s | — |
| 1981 | 28.6°C | 21.0°C | 13.4°C | 33.7°C | 6.8°C | 27 mm | 37% | 2.1 m/s | — |
Actual recorded October data for each year, 1981–2025 — sourced from NASA POWER.
The average high in October is around 31°C with lows near 16°C (mean 23.5°C), based on 45 years of NASA POWER data.
October averages 20 mm of rainfall in Tempe, about average for rainfall. The wettest on record was 98 mm in 2000.
The hottest October reached 43.5°C in 2024. The coldest dipped to 2.9°C in 1991.
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 28.9°C to 32.2°C and overnight lows from 14°C to 17.3°C over the same span.
October is one of the warmer months of the year in Tempe and about average for rainfall, so plan for around 31°C daytime highs and 16°C at night.
Not quite — October is the 7th coolest month in Tempe, averaging 23.5°C.
For October in Tempe, pack light, breathable clothing and sun protection, with typical highs of 31°C and lows of 16°C.
Relative humidity in October averages 32% — relatively dry.
Average wind speed in October is 2 m/s. The windiest October on record averaged 2.3 m/s (1982).
The wettest October on record was 2000 with 98 mm. On average, October sees 20 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 Tempe 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.
