Skip to main content

Greenville CDP, Delaware

Official LSAD Designation: Greenville CDP • Census GEOID: 1031430 • New Castle County

Climate Normals & Weather Observations

30-year climate normals (1991–2020) and weather observations for Greenville CDP.

Reference Weather Station: WILMINGTON PORTER RSCH, DE US (ID: USC00079605) • Located 3.8 miles from community center • Elevation: 82.3 m
Month Average High (°F) Average Low (°F) Mean Temp (°F) Precipitation (in)
January 37.9° 23.8° 30.9° 3.67"
February 40.9° 25.2° 33.0° 3.03"
March 49.2° 32.3° 40.8° 4.65"
April 61.1° 42.5° 51.8° 4.06"
May 70.6° 52.4° 61.5° 3.76"
June 79.4° 61.8° 70.6° 4.71"
July 84.0° 67.2° 75.6° 5.17"
August 81.9° 65.7° 73.8° 4.39"
September 75.0° 58.6° 66.8° 5.13"
October 63.3° 47.0° 55.2° 4.12"
November 52.5° 36.8° 44.7° 3.25"
December 42.8° 29.0° 35.9° 4.37"

Annual Temperature History

2010–2025, completed calendar years only.

NOAA station WILMINGTON PORTER RSCH, DE US (ID: USC00079605) • 3.8 miles from community center .

This is the same reference station used for monthly normals.

Annual mean Annual mean of daily highs Annual mean of daily lows
Annual temperature history at WILMINGTON PORTER RSCH, DE 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. 44.0 49.8 55.5 61.3 67.0 2010 2014 2018 2021 2025 Year Annual mean temperature (°F) 2011: Annual mean 55.8°F 2015: Annual mean 55.7°F 2017: Annual mean 55.3°F 2019: Annual mean 54.4°F 2020: Annual mean 55.8°F 2021: Annual mean 56.1°F 2022: Annual mean 54.8°F 2023: Annual mean 56.3°F 2024: Annual mean 56.3°F 2010: Annual mean of daily highs 64.3°F 2011: Annual mean of daily highs 64.0°F 2014: Annual mean of daily highs 61.9°F 2015: Annual mean of daily highs 64.5°F 2017: Annual mean of daily highs 63.7°F 2019: Annual mean of daily highs 62.5°F 2020: Annual mean of daily highs 63.7°F 2021: Annual mean of daily highs 64.1°F 2022: Annual mean of daily highs 63.2°F 2023: Annual mean of daily highs 64.3°F 2024: Annual mean of daily highs 64.4°F 2011: Annual mean of daily lows 47.7°F 2015: Annual mean of daily lows 46.9°F 2017: Annual mean of daily lows 46.8°F 2019: Annual mean of daily lows 46.3°F 2020: Annual mean of daily lows 47.8°F 2021: Annual mean of daily lows 48.0°F 2022: Annual mean of daily lows 46.5°F 2023: Annual mean of daily lows 48.3°F 2024: Annual mean of daily lows 48.2°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 Unavailable 64.3 Unavailable
2011 55.8 64.0 47.7
2012 Unavailable Unavailable Unavailable
2013 Unavailable Unavailable Unavailable
2014 Unavailable 61.9 Unavailable
2015 55.7 64.5 46.9
2016 Unavailable Unavailable Unavailable
2017 55.3 63.7 46.8
2018 Unavailable Unavailable Unavailable
2019 54.4 62.5 46.3
2020 55.8 63.7 47.8
2021 56.1 64.1 48.0
2022 54.8 63.2 46.5
2023 56.3 64.3 48.3
2024 56.3 64.4 48.2
2025 Unavailable Unavailable Unavailable
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.