October is one of the warmer months of the year in Champaign, with average highs near 18.9°C and lows around 6.6°C (mean 12.8°C). It is about average for rainfall, averaging 86 mm of rainfall and 71% relative humidity across the period.
October is one of the warmer months of the year in Champaign. Across 45 years of records, the warmest Octobers in Champaign were 2007 and 2025 — when the month averaged 15.9°C — while the coldest was 1987 at 9.1°C. Typical October days reach 18.9°C with nights near 6.6°C. The long-term trend is warming, about 0.5°C per decade.
October is about average for rainfall in Champaign, averaging 86 mm of rainfall. The wettest October on record was 2009 with 217 mm, while the driest was 2024 at 17 mm.
Relative humidity in Champaign during October averages 71%. The most humid October was 2009 at 82%, and the least humid was 2024 at 58%.
October receives about 3.2 kWh/m²/day of solar energy in Champaign. The sunniest October was 2024 at 3.9 kWh/m²/day, and the cloudiest was 2009 at 2.3.
Average wind speed in Champaign during October is 3.1 m/s. The windiest October was 2012 at 3.7 m/s, while the calmest were 1992 and 2000 at 2.6 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 12.1°C | 12.4°C | 12.5°C | 13.2°C | 14.1°C | +2°C |
| Avg High | 18.2°C | 18.9°C | 18.5°C | 19.2°C | 20.5°C | +2.3°C |
| Avg Low | 6.0°C | 6.0°C | 6.6°C | 7.2°C | 7.7°C | +1.7°C |
| Avg Rain | 79 mm | 83 mm | 104 mm | 84 mm | 78 mm | -1 mm |
October temperatures in Champaign have risen by about 1.5°C between 1981–1985 and 2021–2025.
October has ranged from a record low of -6.3°C (1992) to a record high of 32.8°C (2025).
Rainfall in October is about average for rainfall, averaging 86 mm, with a wettest year of 217 mm.
A good time to visit Champaign
October is a good time to visit Champaign, with days averaging 18.9°C and nights around 6.6°C (mean 12.8°C, warmer than Champaign's yearly average) and higher 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 | 22.6°C | 15.9°C | 9.1°C | 32.8°C | 0.5°C | 47 mm | 60% | 2.9 m/s | 3.5 |
| 2024 | 22.6°C | 15.1°C | 7.6°C | 29.5°C | 0.3°C | 17 mm | 58% | 2.9 m/s | 3.9 |
| 2023 | 19.6°C | 13.7°C | 7.9°C | 31.4°C | -4.5°C | 98 mm | 70% | 3.2 m/s | 3 |
| 2022 | 19.4°C | 12.5°C | 5.6°C | 26.2°C | -3.0°C | 68 mm | 62% | 3.3 m/s | 3.7 |
| 2021 | 20.6°C | 15.6°C | 10.5°C | 29.5°C | 2.5°C | 174 mm | 80% | 3 m/s | 2.6 |
| 2020 | 18.3°C | 11.9°C | 5.5°C | 28.0°C | -2.1°C | 64 mm | 70% | 3.1 m/s | 3 |
| 2019 | 18.6°C | 12.6°C | 6.5°C | 32.3°C | -5.2°C | 114 mm | 73% | 3.3 m/s | 3 |
| 2018 | 18.8°C | 12.8°C | 6.9°C | 30.9°C | -3.8°C | 82 mm | 73% | 3.2 m/s | 3.1 |
| 2017 | 20.1°C | 14.5°C | 9.0°C | 29.0°C | -3.0°C | 126 mm | 72% | 3.3 m/s | 2.8 |
| 2016 | 21.2°C | 15.3°C | 9.4°C | 28.8°C | 1.7°C | 57 mm | 78% | 3.1 m/s | 3.1 |
| 2015 | 19.9°C | 13.7°C | 7.4°C | 26.8°C | -0.2°C | 42 mm | 67% | 3.4 m/s | 3.4 |
| 2014 | 17.5°C | 12.1°C | 6.7°C | 27.4°C | -0.3°C | 117 mm | 79% | 3.2 m/s | 2.8 |
| 2013 | 19.1°C | 12.9°C | 6.6°C | 29.8°C | -4.1°C | 103 mm | 72% | 3 m/s | 3 |
| 2012 | 16.4°C | 10.9°C | 5.4°C | 26.2°C | -1.7°C | 111 mm | 75% | 3.7 m/s | 3.1 |
| 2011 | 19.7°C | 13.2°C | 6.6°C | 29.6°C | 0.1°C | 57 mm | 67% | 2.9 m/s | 3.5 |
| 2010 | 20.7°C | 13.9°C | 7.0°C | 29.1°C | -2.8°C | 28 mm | 64% | 3.1 m/s | 3.8 |
| 2009 🌧️ | 14.7°C | 9.7°C | 4.8°C | 21.1°C | -2.0°C | 217 mm | 82% | 3.2 m/s | 2.3 |
| 2008 | 18.0°C | 11.9°C | 5.8°C | 26.3°C | -3.5°C | 66 mm | 77% | 2.9 m/s | 3.5 |
| 2007 🔥 | 21.9°C | 15.9°C | 10.0°C | 32.3°C | -0.4°C | 108 mm | 71% | 3.3 m/s | 3.1 |
| 2006 | 16.7°C | 10.7°C | 4.7°C | 31.5°C | -3.9°C | 93 mm | 70% | 3.4 m/s | 3.2 |
| 2005 | 19.3°C | 13.6°C | 7.8°C | 30.0°C | 0.5°C | 65 mm | 73% | 2.7 m/s | 3.3 |
| 2004 | 19.2°C | 13.3°C | 7.5°C | 27.3°C | -0.9°C | 117 mm | 72% | 3.1 m/s | 2.9 |
| 2003 | 18.9°C | 12.5°C | 6.1°C | 27.3°C | -1.5°C | 46 mm | 71% | 2.7 m/s | 3.5 |
| 2002 | 17.6°C | 11.5°C | 5.4°C | 31.2°C | -0.5°C | 69 mm | 71% | 2.8 m/s | 3 |
| 2001 | 17.8°C | 12.0°C | 6.2°C | 28.7°C | -2.6°C | 184 mm | 74% | 3.6 m/s | 3 |
| 2000 | 20.5°C | 14.1°C | 7.7°C | 28.2°C | -2.7°C | 71 mm | 72% | 2.6 m/s | 3.3 |
| 1999 | 19.6°C | 12.7°C | 5.8°C | 26.1°C | -2.6°C | 52 mm | 64% | 3.1 m/s | 3.4 |
| 1998 | 20.2°C | 13.7°C | 7.2°C | 26.5°C | 0.7°C | 77 mm | 72% | 2.9 m/s | 3.2 |
| 1997 | 19.1°C | 12.7°C | 6.3°C | 30.2°C | -3.2°C | 46 mm | 67% | 3 m/s | 3.5 |
| 1996 | 19.8°C | 12.9°C | 6.1°C | 27.7°C | -2.5°C | 54 mm | 69% | 3.3 m/s | 3.1 |
| 1995 | 20.0°C | 13.3°C | 6.7°C | 27.8°C | 0.1°C | 89 mm | 64% | 3.4 m/s | 3.2 |
| 1994 | 19.4°C | 12.9°C | 6.4°C | 29.4°C | -1.6°C | 66 mm | 71% | 2.9 m/s | 3 |
| 1993 | 15.8°C | 10.0°C | 4.1°C | 24.8°C | -3.3°C | 82 mm | 81% | 2.8 m/s | 3.1 |
| 1992 | 18.0°C | 11.5°C | 5.0°C | 27.3°C | -6.3°C | 58 mm | 72% | 2.6 m/s | 3.2 |
| 1991 | 19.2°C | 13.3°C | 7.4°C | 28.0°C | -2.5°C | 159 mm | 72% | 3.5 m/s | 3.2 |
| 1990 | 17.7°C | 11.1°C | 4.5°C | 28.6°C | -1.6°C | 150 mm | 74% | 3.2 m/s | 3.3 |
| 1989 | 18.9°C | 12.5°C | 6.0°C | 27.4°C | -0.5°C | 30 mm | 73% | 3.2 m/s | 3.3 |
| 1988 | 15.6°C | 9.3°C | 3.0°C | 24.2°C | -5.3°C | 66 mm | 61% | 3.2 m/s | 3.5 |
| 1987 ❄️ | 15.6°C | 9.1°C | 2.7°C | 23.9°C | -2.0°C | 33 mm | 64% | 2.9 m/s | 3.3 |
| 1986 | 17.9°C | 12.4°C | 6.9°C | 25.1°C | -0.6°C | 95 mm | 82% | 2.8 m/s | 2.8 |
| 1985 | 19.9°C | 14.0°C | 8.1°C | 28.3°C | 1.6°C | 95 mm | 71% | 3.1 m/s | 2.9 |
| 1984 | 20.8°C | 15.1°C | 9.4°C | 27.0°C | 1.9°C | 91 mm | 76% | 2.9 m/s | 2.4 |
| 1983 | 19.1°C | 13.2°C | 7.3°C | 30.7°C | 0.1°C | 157 mm | 72% | 3.2 m/s | — |
| 1982 | 19.5°C | 12.9°C | 6.4°C | 28.7°C | -4.1°C | 91 mm | 70% | 2.9 m/s | — |
| 1981 | 16.5°C | 10.5°C | 4.5°C | 26.7°C | -5.6°C | 58 mm | 76% | 3 m/s | — |
Actual recorded October data for each year, 1981–2025 — sourced from NASA POWER.
The average high in October is around 18.9°C with lows near 6.6°C (mean 12.8°C), based on 45 years of NASA POWER data.
October averages 86 mm of rainfall in Champaign, about average for rainfall. The wettest on record was 217 mm in 2009.
The hottest October reached 32.8°C in 2025. The coldest dipped to -6.3°C in 1992.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average October temperatures have risen by about 1.5°C. Daytime highs moved from 19.2°C to 21°C and overnight lows from 7.1°C to 8.1°C over the same span.
October is one of the warmer months of the year in Champaign and about average for rainfall, so plan for around 18.9°C daytime highs and 6.6°C at night.
Not quite — October is the 7th coolest month in Champaign, averaging 12.8°C.
For October in Champaign, pack warm layers and a jacket for chilly mornings, with typical highs of 18.9°C and lows of 6.6°C. Bring an umbrella or light rain jacket too.
Relative humidity in October averages 71% — moderately humid.
Average wind speed in October is 3.1 m/s. The windiest October on record averaged 3.7 m/s (2012).
The wettest October on record was 2009 with 217 mm. On average, October sees 86 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 Champaign 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.
