Weather on October 21
Pittsburgh, PA
55 Years of Data
Avg High
62°F
Avg Low
43°F
Warmest
2020
65°F avg
Coldest
2018
36°F avg
About This Date
October 21st in Pittsburgh, PA typically brings mild fall weather, with average highs around 62°F and lows near 43°F. Over 43 years of records, the warmest October 21st was in 2020 (65°F average), while the coldest was 2018 (36°F) — a 29°F range across recorded history. Rain or other precipitation has occurred on about 30% of October 21st dates historically, with the wettest October 21st recording 3.73" of rain. The last decade has been 3.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.7°F warmer on this date compared to 20-30 years ago.
Planning for October 21st in Pittsburgh, PA? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Warming Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 57° | 40° | 48° | 0.08" | — |
| 2024 | 79° | 46° | 62° | — | — |
| 2023 | 56° | 47° | 51° | 0.46" | — |
| 2022 | 63° | 39° | 51° | — | — |
| 2021 | 72° | 52° | 62° | 0.69" | — |
| 2020warmest | 77° | 54° | 65° | — | — |
| 2019 | 73° | 44° | 59° | — | — |
| 2018coldest | 40° | 32° | 36° | 0.08" | — |
| 2017 | 75° | 46° | 61° | — | — |
| 2016 | 63° | 47° | 55° | 3.73" | — |
| 2015 | 71° | 45° | 58° | — | — |
| 2014 | 55° | 47° | 51° | 0.36" | — |
| 2013 | 65° | 40° | 52° | — | — |
| 2012 | 60° | 44° | 52° | — | — |
| 2011 | 49° | 42° | 45° | 0.08" | — |
| 2010 | 62° | 38° | 50° | — | — |
| 2009 | 71° | 46° | 59° | — | — |
| 2008 | 52° | 41° | 46° | 0.1" | — |
| 2007 | 78° | 49° | 63° | — | — |
| 2006 | 56° | 40° | 48° | — | — |
| 2005 | 48° | 44° | 46° | 1.04" | — |
| 2004 | 56° | 51° | 53° | — | — |
| 2003 | 68° | 47° | 57° | 0.05" | — |
| 2002 | 54° | 38° | 46° | — | — |
| 2001 | 74° | 50° | 62° | — | — |
| 2000 | 73° | 48° | 61° | — | — |
| 1999 | 57° | 36° | 46° | — | — |
| 1998 | 56° | 44° | 50° | — | — |
| 1997 | 55° | 39° | 47° | 0.05" | — |
| 1996 | 54° | 36° | 45° | — | — |
| 1995 | 53° | 45° | 49° | 1.02" | — |
| 1994 | 63° | 49° | 56° | — | — |
| 1993 | 72° | 47° | 59° | 0.1" | — |
| 1992 | 54° | 42° | 48° | — | — |
| 1991 | 53° | 30° | 42° | — | — |
| 1978 | 74° | 41° | 57° | — | — |
| 1977 | 67° | 40° | 53° | — | — |
| 1976 | 45° | 38° | 41° | — | — |
| 1975 | 73° | 47° | 60° | — | — |
| 1974 | 49° | 31° | 40° | — | — |
| 1973 | 62° | 40° | 51° | — | — |
| 1972 | 53° | 35° | 44° | — | — |
| 1971 | 76° | 52° | 64° | — | — |
43 years of data from PITTSBURGH WSO CITY