Ontario Weather in March
Average highs run from 39°F on March 1 to 49°F on March 31, and lows from 21°F to 30°F. Normal precipitation for the month is 2.94 in over about 15 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
- 44°F
- Average low
- 25°F
- Precipitation
- 2.94 in
- Snowfall
- 9.7 in
- Record high
- 85°FMar 28, 1945
- Record low
- -12°FMar 6, 2014
- Chance of a freeze
- 100%
- Daylight
- 11 h 13 min to 12 h 42 min
- Cloud cover
- 76%
- Humidity
- 84%
- Dew point
- 28°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 | 39°F | 21°F | 64°F 2018 | -9°F 2015 | 54% | 41% |
| Mar 2 | 39°F | 21°F | 69°F 1991 | -1°F 2026 | 54% | 40% |
| Mar 3 | 40°F | 21°F | 61°F 2008 | -1°F 2003 | 53% | 39% |
| Mar 4 | 40°F | 21°F | 60°F 1974 | -6°F 1982 | 53% | 38% |
| Mar 5 | 40°F | 22°F | 70°F 2024 | 1°F 1944 | 52% | 37% |
| Mar 6 | 40°F | 22°F | 65°F 2009 | -12°F 2014 | 52% | 36% |
| Mar 7 | 41°F | 22°F | 73°F 2022 | -3°F 1968 | 51% | 35% |
| Mar 8 | 41°F | 23°F | 70°F 2000 | -5°F 1989 | 51% | 34% |
| Mar 9 | 41°F | 23°F | 75°F 2000 | -7°F 1960 | 50% | 33% |
| Mar 10 | 42°F | 23°F | 75°F 2016 | 4°F 1984 | 50% | 33% |
| Mar 11 | 42°F | 24°F | 70°F 2026 | 3°F 1996 | 50% | 32% |
| Mar 12 | 42°F | 24°F | 72°F 2021 | -6°F 1960 | 50% | 31% |
| Mar 13 | 43°F | 24°F | 68°F 1927 | 2°F 1989 | 49% | 30% |
| Mar 14 | 43°F | 24°F | 83°F 1990 | 6°F 2003 | 49% | 29% |
| Mar 15 | 44°F | 25°F | 82°F 1990 | 4°F 1960 | 49% | 28% |
| Mar 16 | 44°F | 25°F | 76°F 1990 | -6°F 1960 | 49% | 27% |
| Mar 17 | 44°F | 25°F | 76°F 1927 | 6°F 2014 | 48% | 27% |
| Mar 18 | 45°F | 26°F | 77°F 2012 | -4°F 1956 | 48% | 26% |
| Mar 19 | 45°F | 26°F | 73°F 2012 | 0°F 1967 | 48% | 25% |
| Mar 20 | 45°F | 26°F | 77°F 1976 | 4°F 1967 | 48% | 24% |
| Mar 21 | 46°F | 27°F | 79°F 2012 | -6°F 1986 | 48% | 23% |
| Mar 22 | 46°F | 27°F | 79°F 2012 | 8°F 1959 | 48% | 23% |
| Mar 23 | 46°F | 27°F | 74°F 2012 | 9°F 1940 | 48% | 22% |
| Mar 24 | 47°F | 28°F | 74°F 1976 | 9°F 1940 | 48% | 21% |
| Mar 25 | 47°F | 28°F | 77°F 1988 | 7°F 1983 | 48% | 20% |
| Mar 26 | 47°F | 28°F | 81°F 1945 | -4°F 1960 | 48% | 19% |
| Mar 27 | 48°F | 29°F | 81°F 1989 | 5°F 1923 | 48% | 18% |
| Mar 28 | 48°F | 29°F | 85°F 1945 | 6°F 1923 | 48% | 18% |
| Mar 29 | 49°F | 29°F | 83°F 1945 | 3°F 1959 | 48% | 17% |
| Mar 30 | 49°F | 30°F | 85°F 1977 | 14°F 1970 | 48% | 16% |
| Mar 31 | 49°F | 30°F | 84°F 1977 | 10°F 1923 | 48% | 16% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (EDT).
- March 1
- sunrise 6:45 AM, sunset 5:58 PM
- March 31
- sunrise 6:53 AM, sunset 7:35 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00309049 (Webster 2 Ne), public domain. Records: NOAA GHCN-Daily, station USC00307842, 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.