Pittsburgh, Pennsylvania weather in January

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

Average high: 36°F
Average low: 23°F
Rainy days: ~12 per month
Total precipitation: 3.5 in
Warmest recorded: 61°F
Coldest recorded: -15°F

Expect January days in Pittsburgh, Pennsylvania to top out around 36°F and cool to about 23°F overnight, with roughly 12 days of measurable rain across the month. In recent years January has ranged from -15°F to 61°F.

Other months

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Current Pittsburgh, Pennsylvania forecast → · Historical data by Open-Meteo (ERA5).