McLean Weather in March
Average highs run from 60°F on March 1 to 71°F on March 31, and lows from 33°F to 41°F. Normal precipitation for the month is 1.61 in over about 4 wet days.
March day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
March at a glance
- Average high
- 66°F
- Average low
- 37°F
- Precipitation
- 1.61 in
- Snowfall
- 1.1 in
- Record high
- 101°FMar 27, 2026
- Record low
- 1°FMar 3, 2014
- Chance of a freeze
- 100%
- Daylight
- 11 h 26 min to 12 h 33 min
- Cloud cover
- 54%
- Humidity
- 54%
- Dew point
- 32°F
- Wind
- 12.1 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 |
|---|---|---|---|---|---|---|
| Mar 1 | 60°F | 33°F | 84°F 1972 | 5°F 1980 | 11% | 1% |
| Mar 2 | 61°F | 33°F | 83°F 1967 | 5°F 1980 | 11% | 1% |
| Mar 3 | 61°F | 33°F | 82°F 1974 | 1°F 2014 | 11% | 1% |
| Mar 4 | 61°F | 34°F | 81°F 2022 | 1°F 2014 | 11% | 1% |
| Mar 5 | 62°F | 34°F | 85°F 2009 | 5°F 1989 | 11% | 1% |
| Mar 6 | 62°F | 34°F | 83°F 1991 | 5°F 1989 | 12% | 1% |
| Mar 7 | 63°F | 34°F | 83°F 1972 | 3°F 1996 | 12% | 1% |
| Mar 8 | 63°F | 35°F | 84°F 2006 | 3°F 1996 | 12% | 1% |
| Mar 9 | 63°F | 35°F | 81°F 2026 | 10°F 1969 | 12% | 1% |
| Mar 10 | 64°F | 35°F | 87°F 2026 | 13°F 1969 | 12% | 1% |
| Mar 11 | 64°F | 36°F | 91°F 1989 | 15°F 1969 | 12% | 1% |
| Mar 12 | 65°F | 36°F | 92°F 1989 | 13°F 1998 | 12% | 1% |
| Mar 13 | 65°F | 36°F | 83°F 2005 | 11°F 1993 | 12% | 1% |
| Mar 14 | 66°F | 36°F | 88°F 2002 | 10°F 1993 | 12% | 1% |
| Mar 15 | 66°F | 37°F | 85°F 1972 | 18°F 1988 | 12% | 1% |
| Mar 16 | 66°F | 37°F | 85°F 2012 | 18°F 2026 | 12% | 1% |
| Mar 17 | 67°F | 37°F | 86°F 2012 | 17°F 2026 | 12% | 1% |
| Mar 18 | 67°F | 37°F | 89°F 2011 | 10°F 1965 | 12% | 1% |
| Mar 19 | 68°F | 38°F | 85°F 2025 | 11°F 1965 | 12% | 1% |
| Mar 20 | 68°F | 38°F | 93°F 2017 | 14°F 1965 | 12% | 1% |
| Mar 21 | 68°F | 38°F | 96°F 2026 | 14°F 1983 | 12% | 1% |
| Mar 22 | 69°F | 39°F | 98°F 2026 | 14°F 1983 | 12% | 1% |
| Mar 23 | 69°F | 39°F | 85°F 1978 | 17°F 1965 | 12% | 1% |
| Mar 24 | 69°F | 39°F | 90°F 2018 | 16°F 1965 | 12% | 1% |
| Mar 25 | 70°F | 39°F | 86°F 2026 | 13°F 1996 | 12% | 1% |
| Mar 26 | 70°F | 40°F | 98°F 2026 | 13°F 1996 | 12% | 1% |
| Mar 27 | 70°F | 40°F | 101°F 2026 | 19°F 1996 | 12% | 1% |
| Mar 28 | 71°F | 40°F | 93°F 1971 | 18°F 1975 | 12% | 1% |
| Mar 29 | 71°F | 40°F | 89°F 1967 | 15°F 1987 | 12% | 1% |
| Mar 30 | 71°F | 41°F | 92°F 2026 | 13°F 1987 | 12% | 1% |
| Mar 31 | 71°F | 41°F | 94°F 2026 | 13°F 1987 | 12% | 1% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (CDT).
- March 1
- sunrise 7:12 AM, sunset 6:38 PM
- March 31
- sunrise 7:30 AM, sunset 8:03 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.