January and February: Winter in Allegheny County is cold, with average high temperatures in January ranging from 35°F to 39°F (2°C to 4°C) and lows between 19°F and 24°F (-7°C to -4°C). February sees similar temperatures, with an increase in daylight hours. Snowfall is common during these months, contributing to a winter wonderland in the area.
March and April: As spring approaches, temperatures begin to rise. March sees average highs between 45°F and 51°F (7°C to 11°C), and lows between 26°F and 32°F (-3°C to 0°C). April brings milder weather, with highs ranging from 57°F to 66°F (14°C to 19°C) and lows between 35°F and 42°F (2°C to 6°C). Spring in Allegheny County is marked by the blossoming of trees and flowers. Check Clothesbliss for climate in Pittsburgh, Pennsylvania.
May and June: May marks the transition to warmer weather. Average high temperatures range from 70°F to 76°F (21°C to 24°C), and lows range from 45°F to 53°F (7°C to 12°C). June brings even warmer temperatures, with highs between 79°F and 85°F (26°C to 29°C) and lows between 54°F and 61°F (12°C to 16°C). Rainfall is more evenly distributed during these months.
July and August: Summer in Allegheny County is warm and can be humid. July and August are the warmest months, with average high temperatures ranging from 84°F to 88°F (29°C to 31°C). Lows typically range from 63°F to 67°F (17°C to 19°C). These months also experience occasional thunderstorms, providing relief from the heat.
September and October: As fall approaches, temperatures begin to cool down. September sees average high temperatures ranging from 77°F to 82°F (25°C to 28°C) and lows between 55°F and 60°F (13°C to 16°C). October brings further cooling, with highs ranging from 65°F to 70°F (18°C to 21°C) and lows between 43°F and 49°F (6°C to 9°C). Fall foliage is a highlight during this time.
November and December: Late fall and early winter bring cooler temperatures. November sees average high temperatures ranging from 53°F to 58°F (12°C to 14°C) and lows between 38°F and 43°F (3°C to 6°C). December is one of the coldest months, with highs ranging from 39°F to 44°F (4°C to 7°C) and lows between 27°F and 32°F (-3°C to 0°C). Snow becomes more common as winter progresses.
In summary, Allegheny County experiences a four-season climate. Winters are cold with snowfall, springs are marked by a gradual warming trend and blossoming vegetation, summers are warm with occasional thunderstorms, and falls bring cooler temperatures and vibrant foliage. This diverse climate contributes to the region’s scenic beauty and provides residents and visitors with a variety of outdoor experiences throughout the year.