Average Temperatures for Large US Cities in March

Average temperatures for the month of March in the largest US cities are listed below in degrees Fahrenheit and Celsius.

The tables give the normals for maximum and minimum temperatures based on weather data collected from 1991 to 2020 by the US National Centers for Environmental Information.

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, Grand Rapids, Minneapolis and Rochester. They often get frost at night while the days warm up to the mid-40s °F (7 °C).

In the hottest cities during March, the days usually reach the mid-70s °F (24 °C) while at night the temperature seldom goes below 50 °F (10 °C). Weather this warm can be found in Tampa, Phoenix, Tucson and San Antonio among others. Miami and Honolulu stand out as cities with daily highs normally reaching above 80 °F (27 °C).

In between the hot and cold extremes are cities with moderate temperatures day and night. San Diego in March typically stays between 53 and 70 °F (12 and 21 °C). Other cities, such as Atlanta, Birmingham and Sacramento, have similarly mild days, but slightly cooler nights.