Winterstown borough, Pennsylvania

Official LSAD Designation: Winterstown borough • Census GEOID: 4285872 • York County

Climate Normals & Weather Observations

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

Reference Weather Station: YORK 3 SSW PUMP STN, PA US (ID: USC00369933) • Located 8.8 miles from community center • Elevation: 118.9 m

Month	Average High (°F)	Average Low (°F)	Mean Temp (°F)	Precipitation (in)
January	41.2°	21.3°	31.2°	3.27"
February	45.3°	23.2°	34.3°	2.81"
March	54.5°	30.2°	42.4°	4.01"
April	67.2°	40.0°	53.6°	3.62"
May	76.5°	49.7°	63.1°	4.20"
June	83.9°	58.5°	71.2°	4.29"
July	87.7°	63.1°	75.4°	4.52"
August	86.0°	61.5°	73.8°	3.96"
September	79.7°	54.5°	67.1°	5.10"
October	68.2°	43.0°	55.6°	3.94"
November	55.7°	33.1°	44.4°	3.22"
December	44.9°	26.1°	35.5°	3.52"

2010–2025, completed calendar years only.

NOAA station MILLERS 4 NE, MD US (ID: USC00185934) • 12.9 miles from community center .

This annual reference station differs from the monthly normals station (ID: USC00369933), which has no available annual mean history.

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	54.1	63.8	44.3
2011	55.0	64.7	45.2
2012	56.0	66.0	46.1
2013	52.8	62.2	43.4
2014	51.6	61.4	41.9
2015	54.1	63.9	44.4
2016	54.8	64.3	45.3
2017	54.9	64.3	45.5
2018	54.0	62.7	45.2
2019	54.5	64.0	44.9
2020	55.4	65.0	45.9
2021	55.0	64.3	45.8
2022	53.9	63.8	44.1
2023	55.7	65.9	45.5
2024	56.0	65.9	46.2
2025	54.0	63.8	44.2

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