McLean County Weather in March
Average highs run from 51°F on March 1 to 63°F on March 31, and lows from 33°F to 41°F. Normal precipitation for the month is 4.38 in over about 10 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
- 57°F
- Average low
- 37°F
- Precipitation
- 4.38 in
- Snowfall
- 0.6 in
- Record high
- 88°FMar 22, 2026
- Record low
- -5°FMar 6, 1960
- Chance of a freeze
- 98%
- Daylight
- 11 h 23 min to 12 h 35 min
- Cloud cover
- 66%
- Humidity
- 81%
- Dew point
- 40°F
- Wind
- 9.8 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 | 51°F | 33°F | 80°F 2006 | 13°F 1960 | 31% | 1% |
| Mar 2 | 52°F | 34°F | 79°F 1992 | 5°F 1980 | 31% | 1% |
| Mar 3 | 52°F | 34°F | 80°F 1983 | 4°F 1980 | 31% | 1% |
| Mar 4 | 53°F | 34°F | 82°F 1983 | 8°F 1978 | 31% | 1% |
| Mar 5 | 53°F | 34°F | 78°F 1983 | -1°F 1960 | 31% | 1% |
| Mar 6 | 53°F | 35°F | 81°F 2026 | -5°F 1960 | 31% | 1% |
| Mar 7 | 54°F | 35°F | 83°F 2000 | 14°F 1967 | 31% | 1% |
| Mar 8 | 54°F | 35°F | 83°F 2000 | 6°F 1960 | 32% | 1% |
| Mar 9 | 54°F | 35°F | 79°F 1974 | 10°F 1996 | 32% | 1% |
| Mar 10 | 55°F | 36°F | 81°F 1990 | 11°F 1992 | 32% | 1% |
| Mar 11 | 55°F | 36°F | 81°F 1990 | 18°F 1992 | 32% | 1% |
| Mar 12 | 56°F | 36°F | 81°F 1967 | 9°F 1998 | 32% | 1% |
| Mar 13 | 56°F | 36°F | 85°F 1967 | 8°F 1960 | 32% | 1% |
| Mar 14 | 56°F | 37°F | 83°F 1967 | 7°F 1960 | 32% | 1% |
| Mar 15 | 57°F | 37°F | 87°F 2016 | 18°F 1975 | 32% | 1% |
| Mar 16 | 57°F | 37°F | 86°F 2016 | 17°F 1970 | 32% | 1% |
| Mar 17 | 58°F | 37°F | 82°F 1989 | 21°F 2026 | 32% | 1% |
| Mar 18 | 58°F | 38°F | 83°F 2012 | 17°F 1978 | 32% | 1% |
| Mar 19 | 58°F | 38°F | 83°F 2012 | 9°F 1965 | 32% | 1% |
| Mar 20 | 59°F | 38°F | 85°F 2012 | 16°F 1965 | 32% | 1% |
| Mar 21 | 59°F | 38°F | 83°F 2012 | 20°F 1956 | 32% | 1% |
| Mar 22 | 59°F | 39°F | 88°F 2026 | 19°F 2002 | 32% | 1% |
| Mar 23 | 60°F | 39°F | 88°F 2026 | 15°F 1968 | 32% | 1% |
| Mar 24 | 60°F | 39°F | 85°F 2007 | 15°F 1974 | 32% | 1% |
| Mar 25 | 61°F | 40°F | 86°F 2007 | 20°F 1960 | 32% | 0% |
| Mar 26 | 61°F | 40°F | 87°F 2007 | 12°F 1955 | 32% | 0% |
| Mar 27 | 61°F | 40°F | 85°F 2007 | 17°F 1955 | 32% | 0% |
| Mar 28 | 62°F | 40°F | 84°F 2007 | 21°F 1966 | 32% | 0% |
| Mar 29 | 62°F | 41°F | 83°F 1998 | 22°F 1966 | 32% | 0% |
| Mar 30 | 63°F | 41°F | 85°F 1998 | 20°F 1964 | 32% | 0% |
| Mar 31 | 63°F | 41°F | 83°F 1963 | 19°F 1969 | 32% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (CDT).
- March 1
- sunrise 6:20 AM, sunset 5:43 PM
- March 31
- sunrise 6:36 AM, sunset 7:11 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00151227 (Calhoun Lock 2), public domain. Records: NOAA GHCN-Daily, station USC00155067, 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.