McLean Weather in October
Average highs run from 80°F on October 1 to 69°F on October 31, and lows from 54°F to 42°F. Normal precipitation for the month is 2.66 in over about 4 wet days.
October day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
October at a glance
- Average high
- 74°F
- Average low
- 48°F
- Precipitation
- 2.66 in
- Record high
- 99°FOct 4, 2000
- Record low
- 12°FOct 30, 1993
- Chance of a freeze
- 53%
- Days of 90°F or more
- 0.9
- Daylight
- 11 h 49 min to 10 h 46 min
- Cloud cover
- 42%
- Humidity
- 56%
- Dew point
- 43°F
- Wind
- 10.7 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| Oct 1 | 80°F | 54°F | 96°F 1977 | 30°F 1985 | 10% | 0% |
| Oct 2 | 79°F | 53°F | 96°F 2000 | 38°F 1975 | 10% | 0% |
| Oct 3 | 79°F | 53°F | 93°F 2006 | 37°F 1999 | 10% | 0% |
| Oct 4 | 79°F | 53°F | 99°F 2000 | 37°F 1999 | 10% | 0% |
| Oct 5 | 78°F | 52°F | 91°F 2007 | 35°F 1985 | 10% | 0% |
| Oct 6 | 78°F | 52°F | 90°F 2024 | 34°F 2001 | 10% | 0% |
| Oct 7 | 78°F | 51°F | 91°F 1979 | 33°F 2000 | 10% | 0% |
| Oct 8 | 77°F | 51°F | 95°F 1979 | 30°F 1970 | 10% | 0% |
| Oct 9 | 77°F | 50°F | 99°F 1979 | 29°F 1970 | 10% | 0% |
| Oct 10 | 77°F | 50°F | 95°F 2021 | 31°F 1970 | 10% | 0% |
| Oct 11 | 76°F | 50°F | 92°F 1972 | 26°F 2009 | 10% | 0% |
| Oct 12 | 76°F | 49°F | 95°F 2024 | 25°F 2019 | 10% | 0% |
| Oct 13 | 75°F | 49°F | 95°F 2024 | 29°F 1969 | 11% | 0% |
| Oct 14 | 75°F | 48°F | 93°F 1968 | 28°F 1969 | 11% | 0% |
| Oct 15 | 75°F | 48°F | 95°F 2020 | 27°F 2018 | 11% | 0% |
| Oct 16 | 74°F | 48°F | 96°F 2016 | 27°F 2018 | 11% | 0% |
| Oct 17 | 74°F | 47°F | 98°F 2016 | 30°F 1976 | 11% | 0% |
| Oct 18 | 74°F | 47°F | 95°F 2016 | 30°F 1976 | 11% | 0% |
| Oct 19 | 73°F | 46°F | 92°F 2005 | 26°F 1976 | 11% | |
| Oct 20 | 73°F | 46°F | 92°F 2003 | 24°F 1976 | 11% | |
| Oct 21 | 73°F | 46°F | 91°F 1975 | 26°F 1976 | 11% | |
| Oct 22 | 72°F | 45°F | 92°F 1975 | 29°F 1990 | 11% | |
| Oct 23 | 72°F | 45°F | 89°F 2023 | 29°F 1996 | 11% | |
| Oct 24 | 72°F | 45°F | 92°F 2012 | 24°F 2005 | 11% | |
| Oct 25 | 71°F | 44°F | 91°F 2024 | 23°F 2019 | 11% | |
| Oct 26 | 71°F | 44°F | 89°F 2011 | 21°F 2019 | 11% | |
| Oct 27 | 71°F | 44°F | 90°F 1979 | 17°F 2020 | 11% | |
| Oct 28 | 70°F | 43°F | 88°F 1975 | 18°F 2020 | 11% | |
| Oct 29 | 70°F | 43°F | 93°F 2024 | 21°F 1980 | 11% | |
| Oct 30 | 70°F | 42°F | 92°F 2016 | 12°F 1993 | 11% | |
| Oct 31 | 69°F | 42°F | 87°F 1968 | 12°F 1993 | 11% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (CDT).
- October 1
- sunrise 7:37 AM, sunset 7:26 PM
- October 31
- sunrise 8:03 AM, sunset 6:49 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00415770 (Mc Lean), public domain. Records: NOAA GHCN-Daily, station USC00416776, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.