Finleyville Weather Forecast
- 55
- 84
Sunny
- 58
- 85
Mostly Sunny
- 63
- 84
Partly Sunny
- 62
- 84
Slight Chance Thunderstorms
- 62
- 83
Chance Rain Showers
- 61
- 82
Chance Rain Showers
- 60
- 80
Chance Rain Showers
Today 18 Sep Washington
Sunny, warm. Near steady temperature in the lower 80s. Northwest Winds around 5 Mph.
Tonight 18 Sep Washington
Clear. Lows in the mid 50s. Northwest Winds around 5 Mph this Evening, becoming light and variable.
Finleyville Temperature Statistics
September Temperature
Pittsburgh - Allegheny County Airport (8.1 miles)
Lowest 8 September, 2025
45 °FAverage September
65.7 °FHighest 15 September, 2025
82.9 °F
Climate (2020–Present)
Pittsburgh - Allegheny County Airport (8.1 miles)
Average Low 2020–2025
46.2 °FAverage 2020–2025
54.7 °FAverage High 2020–2025
63.3 °F