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Hallam borough, Pennsylvania

Official LSAD Designation: Hallam borough • Census GEOID: 4232056 • York County

Climate Normals & Weather Observations

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

Reference Weather Station: YORK 3 SSW PUMP STN, PA US (ID: USC00369933) • Located 9.7 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"

Annual Temperature History

2010–2025, completed calendar years only.

NOAA station LANDISVILLE 2 NW, PA US (ID: USC00364778) • 12.4 miles from community center .

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

Annual mean Annual mean of daily highs Annual mean of daily lows
Annual temperature history at LANDISVILLE 2 NW, PA US Year is the horizontal axis. Annual mean temperature in degrees Fahrenheit is the vertical axis. Dots show recorded years; lines connect consecutive available years only. Missing years are gaps, with no interpolation. Optional dashed lines show annual mean of daily highs and lows. Exact values appear in the data table below. 36.0 44.3 52.5 60.8 69.0 2010 2014 2018 2021 2025 Year Annual mean temperature (°F) 2010: Annual mean 53.4°F 2011: Annual mean 54.0°F 2013: Annual mean 52.1°F 2014: Annual mean 50.4°F 2015: Annual mean 52.8°F 2016: Annual mean 54.0°F 2017: Annual mean 52.6°F 2018: Annual mean 51.4°F 2019: Annual mean 51.6°F 2020: Annual mean 54.4°F 2024: Annual mean 54.8°F 2010: Annual mean of daily highs 65.1°F 2011: Annual mean of daily highs 64.9°F 2013: Annual mean of daily highs 63.1°F 2014: Annual mean of daily highs 61.5°F 2015: Annual mean of daily highs 64.5°F 2016: Annual mean of daily highs 65.8°F 2017: Annual mean of daily highs 63.9°F 2018: Annual mean of daily highs 61.6°F 2019: Annual mean of daily highs 62.6°F 2020: Annual mean of daily highs 64.5°F 2024: Annual mean of daily highs 65.1°F 2010: Annual mean of daily lows 41.8°F 2011: Annual mean of daily lows 43.1°F 2013: Annual mean of daily lows 41.2°F 2014: Annual mean of daily lows 39.3°F 2015: Annual mean of daily lows 41.1°F 2016: Annual mean of daily lows 42.2°F 2017: Annual mean of daily lows 41.2°F 2018: Annual mean of daily lows 41.2°F 2019: Annual mean of daily lows 40.6°F 2020: Annual mean of daily lows 44.2°F 2024: Annual mean of daily lows 44.4°F

Source: NOAA NCEI Global Summary of the Year.

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 53.4 65.1 41.8
2011 54.0 64.9 43.1
2012 Unavailable Unavailable Unavailable
2013 52.1 63.1 41.2
2014 50.4 61.5 39.3
2015 52.8 64.5 41.1
2016 54.0 65.8 42.2
2017 52.6 63.9 41.2
2018 51.4 61.6 41.2
2019 51.6 62.6 40.6
2020 54.4 64.5 44.2
2021 Unavailable Unavailable Unavailable
2022 Unavailable Unavailable Unavailable
2023 Unavailable Unavailable Unavailable
2024 54.8 65.1 44.4
2025 Unavailable Unavailable Unavailable
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.