Weather on December 31
Pittsburgh, PA
55 Years of Data
Avg High
42°F
Avg Low
29°F
Warmest
1972
59°F avg
Coldest
2017
7°F avg
About This Date
December 31st in Pittsburgh, PA typically brings chilly winter weather, with average highs around 42°F and lows near 29°F. Over 43 years of records, the warmest December 31st was in 1972 (59°F average), while the coldest was 2017 (7°F) — a 52°F range across recorded history. Precipitation has occurred on 51% of recorded December 31st dates, with snow falling 7% of the time. The last decade has been 2.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.7°F warmer on this date compared to 20-30 years ago.
Planning for December 31st in Pittsburgh, PA? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 30° | 16° | 23° | — | — |
| 2024 | 51° | 36° | 43° | 0.64" | — |
| 2023 | 39° | 35° | 37° | 0.03" | — |
| 2022 | 56° | 47° | 51° | 0.36" | — |
| 2021 | 54° | 47° | 50° | — | — |
| 2020 | 47° | 30° | 39° | 0.64" | — |
| 2019 | 39° | 30° | 35° | 0.18" | — |
| 2018 | 61° | 31° | 46° | 1.83" | — |
| 2017coldest | 13° | 1° | 7° | — | — |
| 2016 | 41° | 24° | 33° | 0.05" | — |
| 2015 | 43° | 31° | 37° | 0.03" | — |
| 2014 | 25° | 19° | 22° | — | — |
| 2013 | 26° | 23° | 25° | — | — |
| 2012 | 34° | 19° | 27° | — | — |
| 2011 | 46° | 40° | 43° | 0.05" | — |
| 2010 | 58° | 36° | 47° | — | — |
| 2009 | 36° | 31° | 34° | 0.63" | — |
| 2008 | 45° | 18° | 32° | — | — |
| 2007 | 42° | 32° | 37° | 0.03" | — |
| 2006 | 55° | 38° | 46° | 0.86" | — |
| 2005 | 41° | 33° | 37° | 0.18" | — |
| 2004 | 56° | 49° | 52° | 0.05" | — |
| 2003 | 49° | 25° | 37° | — | — |
| 2002 | 58° | 45° | 51° | 0.36" | — |
| 2001 | 20° | 14° | 17° | — | — |
| 2000 | 24° | 17° | 21° | — | — |
| 1999 | 45° | 32° | 38° | — | — |
| 1998 | 24° | 17° | 21° | — | — |
| 1997 | 27° | 18° | 22° | — | 0.2" |
| 1996 | 48° | 34° | 41° | — | — |
| 1995 | 40° | 28° | 34° | — | — |
| 1994 | 44° | 30° | 37° | — | — |
| 1993 | 29° | 14° | 21° | 0.03" | 0.1" |
| 1992 | 62° | 39° | 51° | 0.66" | — |
| 1991 | 40° | 27° | 33° | — | — |
| 1978 | 56° | 42° | 49° | 1.27" | — |
| 1977 | 45° | 30° | 37° | — | — |
| 1976 | 15° | 4° | 9° | — | — |
| 1975 | 45° | 35° | 40° | 1.14" | — |
| 1974 | 42° | 28° | 35° | 1.22" | — |
| 1973 | 33° | 28° | 31° | 0.23" | 0.3" |
| 1972warmest | 71° | 47° | 59° | 0.28" | — |
| 1971 | 35° | 27° | 31° | — | — |
43 years of data from PITTSBURGH WSO CITY