October is one of the warmer months of the year in Arlington, with average highs near 26.8°C and lows around 13.7°C (mean 20.3°C). It is a relatively wet time of year, averaging 110 mm of rainfall and 65% relative humidity across the period.
October is one of the warmer months of the year in Arlington. Across 45 years of records, the warmest October in Arlington was 2024 — when the month averaged 24.7°C — while the coldest was 2009 at 16.9°C. Typical October days reach 26.8°C with nights near 13.7°C. The long-term trend is warming, about 0.5°C per decade.
October is a relatively wet time of year in Arlington, averaging 110 mm of rainfall. The wettest October on record was 2015 with 297 mm, while the driest was 2024 at 12 mm.
Relative humidity in Arlington during October averages 65%. The most humid October was 2018 at 83%, and the least humid was 2024 at 45%.
October receives about 4.2 kWh/m²/day of solar energy in Arlington. The sunniest October was 2010 at 5 kWh/m²/day, and the cloudiest was 2002 at 2.9.
Average wind speed in Arlington during October is 2.8 m/s. The windiest October was 1981 at 3.3 m/s, while the calmest was 2025 at 2.3 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 19.8°C | 19.9°C | 19.9°C | 20.5°C | 22.0°C | +2.2°C |
| Avg High | 26.1°C | 26.6°C | 26.2°C | 27.0°C | 29.1°C | +3°C |
| Avg Low | 13.5°C | 13.1°C | 13.5°C | 13.9°C | 15.0°C | +1.5°C |
| Avg Rain | 116 mm | 120 mm | 107 mm | 115 mm | 82 mm | -35 mm |
October temperatures in Arlington have risen by about 2.7°C between 1981–1985 and 2021–2025.
October has ranged from a record low of -5.2°C (1993) to a record high of 39.2°C (2024).
Rainfall in October is a relatively wet time of year, averaging 110 mm, with a wettest year of 297 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.6°C per decade while lows rose 0.3°C per decade, widening the gap between day and night.
One of the best times to visit Arlington
October is one of the best times to visit Arlington. Expect days averaging 26.8°C and nights around 13.7°C (mean 20.3°C) — warmer than Arlington's yearly average — with higher rainfall (110 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 | 30.8°C | 23.7°C | 16.6°C | 35.9°C | 5.8°C | 60 mm | 52% | 2.3 m/s | 4.7 |
| 2024 🔥 | 32.5°C | 24.7°C | 16.9°C | 39.2°C | 6.3°C | 12 mm | 45% | 2.6 m/s | 4.9 |
| 2023 | 27.7°C | 21.3°C | 15.0°C | 35.2°C | 0.7°C | 214 mm | 62% | 3 m/s | 4.2 |
| 2022 | 28.2°C | 21.0°C | 13.8°C | 36.8°C | 4.9°C | 91 mm | 51% | 2.7 m/s | 4.6 |
| 2021 | 28.9°C | 22.2°C | 15.5°C | 34.7°C | 6.1°C | 69 mm | 62% | 2.9 m/s | 4.5 |
| 2020 | 26.4°C | 19.4°C | 12.3°C | 37.0°C | 2.6°C | 45 mm | 65% | 2.9 m/s | 4.1 |
| 2019 | 26.3°C | 19.5°C | 12.8°C | 37.9°C | -2.2°C | 99 mm | 61% | 3.2 m/s | 4.2 |
| 2018 | 23.6°C | 18.9°C | 14.3°C | 32.2°C | 5.2°C | 292 mm | 83% | 2.7 m/s | 3.3 |
| 2017 | 27.6°C | 20.4°C | 13.1°C | 34.7°C | 0.7°C | 46 mm | 59% | 2.9 m/s | 4.7 |
| 2016 | 28.7°C | 22.4°C | 16.0°C | 33.2°C | 9.2°C | 43 mm | 69% | 2.7 m/s | 4.7 |
| 2015 🌧️ | 28.9°C | 22.4°C | 15.9°C | 36.9°C | 10.3°C | 297 mm | 55% | 2.7 m/s | 4.2 |
| 2014 | 28.9°C | 22.0°C | 15.1°C | 36.1°C | 7.8°C | 85 mm | 65% | 2.8 m/s | 4.6 |
| 2013 | 25.7°C | 19.7°C | 13.6°C | 33.3°C | 4.1°C | 122 mm | 74% | 2.8 m/s | 3.9 |
| 2012 | 26.2°C | 19.5°C | 12.8°C | 32.4°C | 2.3°C | 28 mm | 66% | 3.1 m/s | 4.1 |
| 2011 | 26.8°C | 19.9°C | 12.9°C | 33.0°C | 5.3°C | 96 mm | 60% | 2.7 m/s | 4.6 |
| 2010 | 27.6°C | 19.9°C | 12.2°C | 31.5°C | 4.2°C | 39 mm | 57% | 2.5 m/s | 5 |
| 2009 ❄️ | 22.8°C | 16.9°C | 11.0°C | 29.9°C | 4.0°C | 275 mm | 82% | 3.2 m/s | 3.1 |
| 2008 | 26.9°C | 19.5°C | 12.2°C | 33.4°C | 2.3°C | 52 mm | 63% | 2.6 m/s | 4.6 |
| 2007 | 26.9°C | 20.4°C | 13.9°C | 32.4°C | 5.5°C | 67 mm | 70% | 2.7 m/s | 4.6 |
| 2006 | 26.5°C | 19.7°C | 12.9°C | 35.3°C | 4.3°C | 92 mm | 64% | 2.9 m/s | 4.5 |
| 2005 | 27.8°C | 20.7°C | 13.6°C | 34.9°C | 3.3°C | 30 mm | 53% | 2.6 m/s | 4.3 |
| 2004 | 27.6°C | 22.3°C | 16.9°C | 33.3°C | 10.4°C | 153 mm | 75% | 2.8 m/s | 3.6 |
| 2003 | 27.8°C | 20.9°C | 14.0°C | 32.9°C | 5.1°C | 59 mm | 67% | 2.4 m/s | 4.2 |
| 2002 | 24.1°C | 18.9°C | 13.7°C | 35.6°C | 6.0°C | 169 mm | 74% | 2.4 m/s | 2.9 |
| 2001 | 25.6°C | 18.5°C | 11.4°C | 31.6°C | 5.4°C | 73 mm | 68% | 3.2 m/s | 4.5 |
| 2000 | 26.0°C | 20.8°C | 15.5°C | 35.7°C | 4.6°C | 103 mm | 66% | 3.2 m/s | 3.3 |
| 1999 | 28.2°C | 20.7°C | 13.2°C | 34.5°C | 6.0°C | 60 mm | 51% | 2.7 m/s | 4.5 |
| 1998 | 25.8°C | 20.4°C | 15.0°C | 34.6°C | 6.3°C | 166 mm | 78% | 3.1 m/s | 3.9 |
| 1997 | 26.2°C | 20.0°C | 13.8°C | 36.2°C | 1.3°C | 123 mm | 70% | 2.8 m/s | 4 |
| 1996 | 26.4°C | 19.6°C | 12.8°C | 31.0°C | 3.0°C | 93 mm | 70% | 3 m/s | 4 |
| 1995 | 28.3°C | 20.4°C | 12.6°C | 33.3°C | 5.9°C | 16 mm | 54% | 3.1 m/s | 4.7 |
| 1994 | 25.8°C | 19.6°C | 13.3°C | 34.7°C | 3.3°C | 192 mm | 74% | 2.6 m/s | 3.8 |
| 1993 | 23.2°C | 17.3°C | 11.4°C | 32.3°C | -5.2°C | 211 mm | 72% | 2.7 m/s | 3.9 |
| 1992 | 28.6°C | 21.0°C | 13.3°C | 32.9°C | 7.0°C | 59 mm | 60% | 2.6 m/s | 4.4 |
| 1991 | 26.8°C | 20.2°C | 13.6°C | 35.4°C | 0.2°C | 220 mm | 68% | 3 m/s | 4.2 |
| 1990 | 26.7°C | 19.3°C | 11.8°C | 33.9°C | 2.6°C | 63 mm | 65% | 3 m/s | 4.5 |
| 1989 | 28.1°C | 20.6°C | 13.1°C | 36.0°C | 0.9°C | 37 mm | 56% | 3 m/s | 4.5 |
| 1988 | 26.4°C | 19.5°C | 12.5°C | 31.9°C | 8.1°C | 38 mm | 66% | 2.7 m/s | 4.1 |
| 1987 | 27.5°C | 20.0°C | 12.5°C | 33.9°C | 6.3°C | 22 mm | 56% | 3.1 m/s | 4.4 |
| 1986 | 24.6°C | 18.8°C | 13.0°C | 34.6°C | 5.8°C | 126 mm | 76% | 2.7 m/s | 3.5 |
| 1985 | 25.0°C | 19.9°C | 14.7°C | 32.1°C | 7.3°C | 175 mm | 75% | 3.2 m/s | 3.4 |
| 1984 | 25.0°C | 19.7°C | 14.4°C | 30.2°C | 5.6°C | 230 mm | 78% | 2.8 m/s | 3 |
| 1983 | 27.2°C | 20.6°C | 14.0°C | 37.4°C | 5.6°C | 81 mm | 67% | 2.8 m/s | — |
| 1982 | 26.8°C | 20.1°C | 13.4°C | 36.0°C | 4.5°C | 68 mm | 62% | 2.7 m/s | — |
| 1981 | 24.3°C | 19.2°C | 14.0°C | 34.2°C | 2.3°C | 271 mm | 78% | 3.3 m/s | — |
Actual recorded October data for each year, 1981–2025 — sourced from NASA POWER.
The average high in October is around 26.8°C with lows near 13.7°C (mean 20.3°C), based on 45 years of NASA POWER data.
October averages 110 mm of rainfall in Arlington, a relatively wet time of year. The wettest on record was 297 mm in 2015.
The hottest October reached 39.2°C in 2024. The coldest dipped to -5.2°C in 1993.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average October temperatures have risen by about 2.7°C. Daytime highs moved from 25.7°C to 29.6°C and overnight lows from 14.1°C to 15.6°C over the same span.
October is one of the warmer months of the year in Arlington and a relatively wet time of year, so plan for around 26.8°C daytime highs and 13.7°C at night.
Not quite — October is the 7th coolest month in Arlington, averaging 20.3°C.
For October in Arlington, pack light layers you can adjust through the day, with typical highs of 26.8°C and lows of 13.7°C. Bring an umbrella or light rain jacket too.
Relative humidity in October averages 65% — moderately humid.
Average wind speed in October is 2.8 m/s. The windiest October on record averaged 3.3 m/s (1981).
The wettest October on record was 2015 with 297 mm. On average, October sees 110 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 Arlington 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.
