Weather on March 21
Pittsburgh, PA
55 Years of Data
Avg High
52°F
Avg Low
33°F
Warmest
2012
66°F avg
Coldest
2013
23°F avg
About This Date
March 21st in Pittsburgh, PA typically brings cool spring weather, with average highs around 52°F and lows near 33°F. Over 44 years of records, the warmest March 21st was in 2012 (66°F average), while the coldest was 2013 (23°F) — a 43°F range across recorded history. Rain or other precipitation has occurred on about 43% of March 21st dates historically, with the wettest March 21st recording 2.77" of rain. The last decade has been 1.9°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.9°F warmer on this date compared to 20-30 years ago.
Planning for March 21st in Pittsburgh, PA? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
Cooling Trend
0.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 62° | 43° | 52° | — | — |
| 2025 | 51° | 31° | 41° | — | — |
| 2024 | 42° | 23° | 33° | — | — |
| 2023 | 57° | 29° | 43° | — | — |
| 2022 | 65° | 38° | 51° | — | — |
| 2021 | 65° | 36° | 50° | — | — |
| 2020 | 39° | 30° | 35° | — | — |
| 2019 | 52° | 40° | 46° | 0.08" | — |
| 2018 | 32° | 26° | 29° | 0.89" | — |
| 2017 | 60° | 37° | 49° | — | — |
| 2016 | 42° | 26° | 34° | — | — |
| 2015 | 55° | 34° | 44° | — | — |
| 2014 | 46° | 30° | 38° | 0.13" | — |
| 2013coldest | 28° | 18° | 23° | — | — |
| 2012warmest | 76° | 56° | 66° | — | — |
| 2011 | 72° | 45° | 58° | 0.13" | — |
| 2010 | 73° | 44° | 59° | — | — |
| 2009 | 47° | 23° | 35° | — | — |
| 2008 | 45° | 25° | 35° | — | — |
| 2007 | 66° | 31° | 49° | — | — |
| 2006 | 32° | 21° | 27° | — | — |
| 2005 | 38° | 32° | 35° | — | — |
| 2004 | 47° | 22° | 34° | 0.23" | — |
| 2003 | 65° | 41° | 53° | 0.08" | — |
| 2002 | 50° | 19° | 35° | — | — |
| 2001 | 41° | 37° | 39° | 2.77" | — |
| 2000 | 42° | 37° | 40° | 1.17" | — |
| 1999 | 51° | 33° | 42° | 0.15" | — |
| 1998 | 50° | 36° | 43° | 1.09" | — |
| 1997 | 68° | 40° | 54° | — | — |
| 1996 | 34° | 20° | 27° | 0.84" | — |
| 1995 | 55° | 49° | 52° | 0.61" | — |
| 1994 | 54° | 36° | 45° | 0.2" | — |
| 1993 | 44° | 37° | 41° | 0.03" | — |
| 1992 | 40° | 31° | 35° | 0.08" | — |
| 1979 | 68° | 37° | 53° | — | — |
| 1978 | 68° | 39° | 54° | 0.36" | — |
| 1977 | 59° | 32° | 46° | — | — |
| 1976 | 63° | 34° | 48° | 0.99" | — |
| 1975 | 57° | 32° | 45° | — | — |
| 1974 | 44° | 29° | 36° | 1.57" | — |
| 1973 | 44° | 24° | 34° | — | — |
| 1972 | 73° | 37° | 55° | 0.03" | — |
| 1971 | 43° | 27° | 35° | — | — |
44 years of data from PITTSBURGH WSO CITY