Ottawa Weather in March
Average highs run from 41°F on March 1 to 55°F on March 31, and lows from 24°F to 34°F. Normal precipitation for the month is 2.29 in over about 9 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
- 48°F
- Average low
- 29°F
- Precipitation
- 2.29 in
- Snowfall
- 3.3 in
- Record high
- 84°FMar 22, 2012
- Record low
- -10°FMar 3, 2014
- Chance of a freeze
- 100%
- Daylight
- 11 h 16 min to 12 h 40 min
- Cloud cover
- 66%
- Humidity
- 78%
- Dew point
- 31°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 | 41°F | 24°F | 67°F 2000 | -1°F 2015 | 27% | 9% |
| Mar 2 | 41°F | 24°F | 73°F 1974 | 3°F 2014 | 27% | 9% |
| Mar 3 | 42°F | 25°F | 75°F 1974 | -10°F 2014 | 27% | 9% |
| Mar 4 | 42°F | 25°F | 74°F 1983 | -9°F 2014 | 28% | 9% |
| Mar 5 | 42°F | 25°F | 75°F 2024 | -8°F 2002 | 28% | 8% |
| Mar 6 | 43°F | 26°F | 71°F 2000 | -1°F 2015 | 28% | 8% |
| Mar 7 | 43°F | 26°F | 71°F 2000 | 3°F 1999 | 28% | 8% |
| Mar 8 | 44°F | 27°F | 79°F 2000 | -2°F 1996 | 28% | 8% |
| Mar 9 | 44°F | 27°F | 77°F 2000 | -4°F 1996 | 28% | 7% |
| Mar 10 | 45°F | 27°F | 75°F 2026 | 4°F 1984 | 28% | 7% |
| Mar 11 | 45°F | 28°F | 78°F 2026 | 0°F 1984 | 29% | 7% |
| Mar 12 | 46°F | 28°F | 76°F 1990 | 4°F 1998 | 29% | 7% |
| Mar 13 | 46°F | 28°F | 80°F 1990 | 5°F 1998 | 29% | 6% |
| Mar 14 | 47°F | 29°F | 76°F 2007 | 5°F 1998 | 29% | 6% |
| Mar 15 | 47°F | 29°F | 81°F 2012 | 5°F 1998 | 29% | 6% |
| Mar 16 | 48°F | 29°F | 81°F 2012 | 11°F 1970 | 30% | 6% |
| Mar 17 | 48°F | 29°F | 81°F 2012 | 10°F 1993 | 30% | 5% |
| Mar 18 | 49°F | 30°F | 82°F 2012 | 8°F 1967 | 30% | 5% |
| Mar 19 | 49°F | 30°F | 82°F 2012 | 10°F 1965 | 30% | 5% |
| Mar 20 | 50°F | 30°F | 80°F 2012 | 8°F 1965 | 30% | 5% |
| Mar 21 | 50°F | 31°F | 83°F 2012 | 11°F 1965 | 31% | 4% |
| Mar 22 | 50°F | 31°F | 84°F 2012 | 12°F 2002 | 31% | 4% |
| Mar 23 | 51°F | 31°F | 77°F 2012 | 10°F 1965 | 31% | 4% |
| Mar 24 | 51°F | 32°F | 78°F 1994 | 2°F 1974 | 31% | 4% |
| Mar 25 | 52°F | 32°F | 80°F 2017 | 9°F 1974 | 32% | 4% |
| Mar 26 | 52°F | 32°F | 79°F 2007 | 11°F 1965 | 32% | 3% |
| Mar 27 | 53°F | 33°F | 81°F 2026 | 7°F 1965 | 32% | 3% |
| Mar 28 | 53°F | 33°F | 79°F 1998 | 10°F 1970 | 32% | 3% |
| Mar 29 | 54°F | 33°F | 81°F 2025 | 11°F 1969 | 33% | 3% |
| Mar 30 | 54°F | 33°F | 80°F 1998 | 8°F 1969 | 33% | 3% |
| Mar 31 | 55°F | 34°F | 83°F 2026 | 9°F 1969 | 33% | 3% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (CDT).
- March 1
- sunrise 6:30 AM, sunset 5:46 PM
- March 31
- sunrise 6:40 AM, sunset 7:20 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00116526 (Ottawa 5SW), public domain. Records: NOAA GHCN-Daily, station USC00116753, 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.