The highest day temperature in March 2025 was 55°F. The lowest night temperature was -8°F. The average values for day and night temperatures during March were 33.6°F и 22.0°F respectivly.

Most of the days in March are gloomy but you can also expect sunny days.

Precipitation total in March for Ottawa is 2.3 in. It makes march one of the least rainy months of the year.

The average wind speed in March is 9.0 mph. This value is relatively stable throughout the year.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Ottawa in March is 4.6 hours.