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Ithaca CDP, Ohio

Official LSAD Designation: Ithaca CDP • Census GEOID: 3937604 • Darke County

Climate Normals & Weather Observations

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

Reference Weather Station: GREENVILLE WTP, OH US (ID: USC00333375) • Located 12.5 miles from community center • Elevation: 313.9 m
Month Average High (°F) Average Low (°F) Mean Temp (°F) Precipitation (in)
January 35.1° 19.0° 27.0° 2.84"
February 39.1° 21.4° 30.2° 2.23"
March 49.6° 30.2° 39.9° 3.23"
April 62.8° 40.3° 51.6° 4.18"
May 73.2° 51.7° 62.5° 4.31"
June 81.6° 60.9° 71.2° 4.42"
July 84.6° 63.6° 74.1° 3.95"
August 83.3° 61.1° 72.2° 3.40"
September 78.1° 53.4° 65.7° 2.75"
October 65.6° 42.4° 54.0° 2.90"
November 51.6° 32.6° 42.1° 3.17"
December 39.8° 24.6° 32.2° 2.88"

Annual Temperature History

2010–2025, completed calendar years only.

NOAA station GREENVILLE WTP, OH US (ID: USC00333375) • 12.5 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 GREENVILLE WTP, OH 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 44.0 52.0 60.0 68.0 2010 2014 2018 2021 2025 Year Annual mean temperature (°F) 2010: Annual mean 50.3°F 2011: Annual mean 51.4°F 2013: Annual mean 51.1°F 2014: Annual mean 49.0°F 2015: Annual mean 51.8°F 2016: Annual mean 53.8°F 2020: Annual mean 52.5°F 2021: Annual mean 52.9°F 2023: Annual mean 53.0°F 2024: Annual mean 54.4°F 2025: Annual mean 51.6°F 2010: Annual mean of daily highs 60.8°F 2011: Annual mean of daily highs 61.2°F 2013: Annual mean of daily highs 61.0°F 2014: Annual mean of daily highs 59.3°F 2015: Annual mean of daily highs 62.0°F 2016: Annual mean of daily highs 64.1°F 2018: Annual mean of daily highs 61.2°F 2020: Annual mean of daily highs 61.9°F 2021: Annual mean of daily highs 62.8°F 2023: Annual mean of daily highs 63.3°F 2024: Annual mean of daily highs 64.5°F 2025: Annual mean of daily highs 62.0°F 2010: Annual mean of daily lows 39.8°F 2011: Annual mean of daily lows 41.5°F 2013: Annual mean of daily lows 41.2°F 2014: Annual mean of daily lows 38.8°F 2015: Annual mean of daily lows 41.6°F 2016: Annual mean of daily lows 43.4°F 2020: Annual mean of daily lows 43.1°F 2021: Annual mean of daily lows 43.0°F 2023: Annual mean of daily lows 42.7°F 2024: Annual mean of daily lows 44.3°F 2025: Annual mean of daily lows 41.3°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 50.3 60.8 39.8
2011 51.4 61.2 41.5
2012 Unavailable Unavailable Unavailable
2013 51.1 61.0 41.2
2014 49.0 59.3 38.8
2015 51.8 62.0 41.6
2016 53.8 64.1 43.4
2017 Unavailable Unavailable Unavailable
2018 Unavailable 61.2 Unavailable
2019 Unavailable Unavailable Unavailable
2020 52.5 61.9 43.1
2021 52.9 62.8 43.0
2022 Unavailable Unavailable Unavailable
2023 53.0 63.3 42.7
2024 54.4 64.5 44.3
2025 51.6 62.0 41.3
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.