Ontario Weather in March
Average highs run from 50°F on March 1 to 60°F on March 31, and lows from 29°F to 35°F. Normal precipitation for the month is 1.00 in over about 8 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
- 32°F
- Precipitation
- 1.00 in
- Snowfall
- 0.5 in
- Record high
- 82°FMar 28, 2021
- Record low
- 13°FMar 3, 2002
- Chance of a freeze
- 100%
- Daylight
- 11 h 12 min to 12 h 43 min
- Cloud cover
- 68%
- Humidity
- 62%
- Dew point
- 30°F
- Wind
- 6.9 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 | 50°F | 29°F | 61°F 2016 | 21°F 2001 | 24% | 4% |
| Mar 2 | 51°F | 29°F | 63°F 2009 | 16°F 2002 | 24% | 4% |
| Mar 3 | 51°F | 29°F | 63°F 2020 | 13°F 2002 | 25% | 4% |
| Mar 4 | 52°F | 29°F | 64°F 2016 | 16°F 2002 | 25% | 3% |
| Mar 5 | 52°F | 30°F | 69°F 2021 | 18°F 2015 | 25% | 3% |
| Mar 6 | 53°F | 30°F | 65°F 2005 | 19°F 2018 | 25% | 3% |
| Mar 7 | 53°F | 30°F | 68°F 2005 | 21°F 2009 | 25% | 3% |
| Mar 8 | 53°F | 30°F | 69°F 2005 | 20°F 2012 | 26% | 3% |
| Mar 9 | 54°F | 31°F | 71°F 2005 | 20°F 2009 | 26% | 3% |
| Mar 10 | 54°F | 31°F | 71°F 2005 | 21°F 2022 | 26% | 2% |
| Mar 11 | 55°F | 31°F | 71°F 2007 | 18°F 2006 | 26% | 2% |
| Mar 12 | 55°F | 31°F | 72°F 2003 | 22°F 2006 | 26% | 2% |
| Mar 13 | 55°F | 32°F | 74°F 2003 | 19°F 2009 | 26% | 2% |
| Mar 14 | 56°F | 32°F | 69°F 2003 | 22°F 2005 | 26% | 2% |
| Mar 15 | 56°F | 32°F | 66°F 2013 | 21°F 2002 | 26% | 2% |
| Mar 16 | 56°F | 32°F | 69°F 2007 | 24°F 2019 | 26% | 2% |
| Mar 17 | 57°F | 32°F | 73°F 2007 | 21°F 2002 | 26% | 2% |
| Mar 18 | 57°F | 33°F | 76°F 2004 | 17°F 2002 | 27% | 1% |
| Mar 19 | 57°F | 33°F | 79°F 2026 | 20°F 2013 | 27% | 1% |
| Mar 20 | 57°F | 33°F | 80°F 2026 | 21°F 2010 | 27% | 1% |
| Mar 21 | 58°F | 33°F | 71°F 2004 | 23°F 2014 | 27% | 1% |
| Mar 22 | 58°F | 33°F | 74°F 2004 | 21°F 2008 | 27% | 1% |
| Mar 23 | 58°F | 34°F | 76°F 2004 | 21°F 2013 | 27% | 1% |
| Mar 24 | 58°F | 34°F | 75°F 2026 | 17°F 2013 | 27% | 1% |
| Mar 25 | 58°F | 34°F | 76°F 2025 | 28°F 2023 | 27% | 1% |
| Mar 26 | 59°F | 34°F | 78°F 2025 | 24°F 2005 | 28% | 1% |
| Mar 27 | 59°F | 34°F | 77°F 2025 | 23°F 2026 | 28% | 1% |
| Mar 28 | 59°F | 34°F | 82°F 2021 | 24°F 1999 | 28% | 1% |
| Mar 29 | 59°F | 35°F | 75°F 2004 | 24°F 2008 | 28% | 0% |
| Mar 30 | 59°F | 35°F | 81°F 2004 | 20°F 2008 | 28% | 0% |
| Mar 31 | 60°F | 35°F | 76°F 2012 | 22°F 2010 | 28% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (MDT).
- March 1
- sunrise 7:24 AM, sunset 6:36 PM
- March 31
- sunrise 7:31 AM, sunset 8:14 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00356294 (Ontario Ksrv), public domain. Records: NOAA GHCN-Daily, station USW00024162, 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.