Climate averages 1991–2020

Pittsburgh weather
in March.

A cool, wet month: the 9th warmest and the 8th driest of the year.

Long-term climate patterns, not a forecast for a particular trip.

Average high 9.9°C Daytime mean, March
Average low -0.5°C Night-time mean, March
Rainfall 108 mm 13 days with ≥1 mm
Daylight 12 h Sunrise to sunset, per day
Every month in Pittsburgh · average highYear overview

March is a cool month in Pittsburgh: daytime highs average 9.9°C and nights cool to about -0.5°C. By daytime temperature it is the 9th warmest of the 12 months.

Expect about 108 mm of rain on roughly 13 days, which makes March a wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 55 min on an average March day.

The nearest other city in this atlas is Canton (Ohio), United States (123 km away). In March its highs average 8.4°C, 1.5°C cooler than Pittsburgh, with 93 mm of rain.

Among the 498 cities listed in the United States, Pittsburgh ranks joint 362nd of 498 for the warmest March highs and joint 416th of 498 for the driest March (rainfall, lowest first). The mean March high of those 498 cities is 14.9°C; Pittsburgh is 5.0°C cooler than that mean.

From March to April, average highs rise by 6.7°C to 16.6°C, and monthly rainfall rises from 108 mm to 119 mm.

The annual picture

March in context

30-year average
Average highAverage low°C
Average daily high and low temperatures by month The same values are available in the monthly table below. Lines show mean daily maxima and minima, not a forecast interval. -10-505101520253035 JanFebMarAprMayJunJulAugSepOctNovDec

Monthly rainfall

Average total · mm
Average monthly rainfall totalsEach bar is a mean monthly total over 1991–2020. Full numbers are in the table. JanFebMarAprMayJunJulAugSepOctNovDec 1500

Averages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated

Every month, side by side

Pittsburgh climate table

1991–2020
Monthly climate averages for Pittsburgh, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 2.8°C-5.5°C-5.5°C9212.09.610 h
February 4.8°C-4.7°C-4.7°C8010.910.611 h
March, selected 9.9°C-0.5°C-0.5°C10812.911.912 h
April 16.6°C5.5°C5.5°C11913.813.313 h
May 21.6°C11.3°C11.3°C12314.314.414 h
June 26.0°C16.2°C16.2°C12613.615.015 h
July 28.2°C18.6°C18.6°C11614.014.815 h
August 27.5°C17.9°C17.9°C9311.913.814 h
September 23.9°C14.4°C14.4°C10110.412.513 h
October 17.4°C8.4°C8.4°C9310.711.211 h
November 10.6°C2.6°C2.6°C8810.010.010 h
December 5.1°C-2.1°C-2.1°C8911.69.39 h

Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.

Compare places

March in nearby cities

Distance from Pittsburgh

Read the numbers correctly

Climate, not a promise.

These patterns help compare months. They cannot tell you the weather on a specific day of your trip.

Sources, method and limits

How these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Pittsburgh) is explained once on the Pittsburgh year overview and on the Sources, method and limits page.