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March temperatures in America's major cities range from average lows that are below freezing to highs well above 70 degrees Fahrenheit (21 degrees Celsius). The coldest US cities in March include Buffalo, Milwaukee, Detroit, Minneapolis and Rochester.
Usually every day during March the temperature rises to over 50 Â°F (10 Â°C) in San Francisco. The city averages 4 days this month when the thermometer reaches into the 70s Â°F (over 21 Â°C). Temperatures above 80 Â°F (27 Â°C) are uncommon during March.