Pittsburgh, Pennsylvania weather in October

Averages from 2021–2025 (155 days of record).

Average high

65°F

Average low

47°F

Rainy days

~9 per month

Total precipitation

3.7 in

Warmest recorded

82°F

Coldest recorded

33°F

Expect October days in Pittsburgh, Pennsylvania to top out around 65°F and cool to about 47°F overnight, with roughly 9 days of measurable rain across the month. In recent years October has ranged from 33°F to 82°F.