St. Charles Weather in March
Average highs run from 51°F on March 1 to 62°F on March 31, and lows from 29°F to 37°F. Normal precipitation for the month is 4.24 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
- 56°F
- Average low
- 33°F
- Precipitation
- 4.24 in
- Snowfall
- 1.8 in
- Record high
- 89°FMar 31, 1998
- Record low
- 2°FMar 11, 1960
- Chance of a freeze
- 100%
- Daylight
- 11 h 21 min to 12 h 36 min
- Cloud cover
- 61%
- Humidity
- 79%
- Dew point
- 37°F
- Wind
- 7.6 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 | 29°F | 77°F 1976 | 11°F 1980 | 32% | 6% |
| Mar 2 | 51°F | 29°F | 79°F 1972 | 11°F 1980 | 32% | 6% |
| Mar 3 | 51°F | 29°F | 80°F 1972 | 10°F 1980 | 32% | 6% |
| Mar 4 | 52°F | 29°F | 74°F 1967 | 4°F 2014 | 32% | 6% |
| Mar 5 | 52°F | 30°F | 80°F 1974 | 6°F 2014 | 32% | 5% |
| Mar 6 | 52°F | 30°F | 83°F 1976 | 9°F 2015 | 33% | 5% |
| Mar 7 | 53°F | 30°F | 82°F 1961 | 5°F 2015 | 33% | 5% |
| Mar 8 | 53°F | 30°F | 76°F 1974 | 6°F 2015 | 33% | 5% |
| Mar 9 | 53°F | 31°F | 85°F 2000 | 7°F 1960 | 33% | 5% |
| Mar 10 | 54°F | 31°F | 82°F 2016 | 12°F 1996 | 33% | 5% |
| Mar 11 | 54°F | 31°F | 81°F 2016 | 2°F 1960 | 33% | 4% |
| Mar 12 | 54°F | 31°F | 77°F 1967 | 8°F 1960 | 33% | 4% |
| Mar 13 | 55°F | 32°F | 88°F 1990 | 15°F 1960 | 33% | 4% |
| Mar 14 | 55°F | 32°F | 87°F 1990 | 11°F 1960 | 33% | 4% |
| Mar 15 | 55°F | 32°F | 88°F 1990 | 8°F 1993 | 33% | 4% |
| Mar 16 | 56°F | 32°F | 82°F 1990 | 11°F 1992 | 33% | 3% |
| Mar 17 | 56°F | 33°F | 81°F 1990 | 14°F 1992 | 33% | 3% |
| Mar 18 | 56°F | 33°F | 77°F 1990 | 12°F 1976 | 34% | 3% |
| Mar 19 | 57°F | 33°F | 78°F 2011 | 10°F 1967 | 34% | 3% |
| Mar 20 | 57°F | 34°F | 76°F 1986 | 19°F 1993 | 34% | 3% |
| Mar 21 | 58°F | 34°F | 79°F 1976 | 8°F 1965 | 34% | 2% |
| Mar 22 | 58°F | 34°F | 78°F 1976 | 15°F 1986 | 34% | 2% |
| Mar 23 | 59°F | 35°F | 82°F 1966 | 16°F 1959 | 34% | 2% |
| Mar 24 | 59°F | 35°F | 81°F 2012 | 9°F 1992 | 34% | 2% |
| Mar 25 | 59°F | 35°F | 79°F 1988 | 18°F 1992 | 34% | 2% |
| Mar 26 | 60°F | 35°F | 80°F 1959 | 20°F 1974 | 34% | 2% |
| Mar 27 | 60°F | 36°F | 79°F 2003 | 19°F 2014 | 34% | 2% |
| Mar 28 | 61°F | 36°F | 84°F 1998 | 19°F 1990 | 34% | 1% |
| Mar 29 | 61°F | 36°F | 84°F 1985 | 17°F 1959 | 34% | 1% |
| Mar 30 | 61°F | 37°F | 87°F 1998 | 22°F 1970 | 34% | 1% |
| Mar 31 | 62°F | 37°F | 89°F 1998 | 20°F 1964 | 34% | 1% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (EDT).
- March 1
- sunrise 6:40 AM, sunset 6:01 PM
- March 31
- sunrise 6:54 AM, sunset 7:30 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00185865 (Mechanicsville 5 Ne), public domain. Records: NOAA GHCN-Daily, station USC00189070, 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.