Finleyville borough, Pennsylvania

Official LSAD Designation: Finleyville borough • Census GEOID: 4225944 • Washington County

Climate Normals & Weather Observations

30-year climate normals (1991–2020) and weather observations for Finleyville borough.

Reference Weather Station: PITTSBURGH ALLEGHENY CO AP, PA US (ID: USW00014762) • Located 8.2 miles from community center • Elevation: 380.4 m

Month	Average High (°F)	Average Low (°F)	Mean Temp (°F)	Precipitation (in)
January	36.6°	22.3°	29.5°	3.08"
February	39.9°	24.3°	32.1°	2.57"
March	49.4°	31.3°	40.4°	3.22"
April	62.5°	41.8°	52.1°	3.40"
May	71.9°	51.8°	61.8°	4.08"
June	79.1°	59.9°	69.5°	4.58"
July	83.0°	64.1°	73.6°	3.93"
August	81.3°	62.8°	72.1°	3.81"
September	74.8°	55.9°	65.4°	3.54"
October	63.3°	45.1°	54.2°	3.06"
November	51.1°	35.3°	43.2°	3.03"
December	41.0°	27.7°	34.4°	3.04"

2010–2025, completed calendar years only.

NOAA station PITTSBURGH ALLEGHENY CO AP, PA US (ID: USW00014762) • 8.2 miles from community center .

This is the same reference station used for monthly normals.

Show annual mean of daily highs and lows

Annual mean Annual mean of daily highs Annual mean of daily lows

Annual temperature data table (°F)

Annual station temperatures, 2010–2025. Unavailable means no reported value.
Year	Annual mean (°F)	Annual mean of daily highs (°F)	Annual mean of daily lows (°F)
2010	52.6	61.2	44.0
2011	53.4	61.9	44.9
2012	55.0	64.2	45.8
2013	51.9	60.3	43.6
2014	51.1	60.0	42.1
2015	52.9	61.9	44.0
2016	54.6	63.6	45.5
2017	53.9	62.6	45.1
2018	52.5	60.8	44.2
2019	53.1	62.0	44.3
2020	54.1	62.8	45.4
2021	54.4	63.1	45.7
2022	53.1	62.1	44.1
2023	55.1	64.2	46.1
2024	56.6	65.6	47.5
2025	Unavailable	Unavailable	Unavailable

Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.