Skip to main content

Trenton CDP, Iowa

Official LSAD Designation: Trenton CDP • Census GEOID: 1978780 • Henry County

Climate Normals & Weather Observations

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

Reference Weather Station: MT PLEASANT 1 SSW, IA US (ID: USC00135796) • Located 9.0 miles from community center • Elevation: 222.5 m
Month Average High (°F) Average Low (°F) Mean Temp (°F) Precipitation (in)
January 31.4° 12.5° 22.0° 1.42"
February 36.6° 16.5° 26.6° 1.68"
March 49.3° 26.9° 38.1° 2.31"
April 62.6° 37.7° 50.2° 3.91"
May 72.3° 48.7° 60.5° 5.05"
June 81.1° 58.1° 69.6° 5.11"
July 84.8° 62.2° 73.5° 4.36"
August 83.3° 60.2° 71.8° 3.85"
September 77.1° 51.9° 64.5° 4.13"
October 64.3° 40.5° 52.4° 2.90"
November 49.5° 28.6° 39.1° 2.05"
December 36.6° 18.4° 27.5° 1.68"

Annual Temperature History

2010–2025, completed calendar years only.

NOAA station MT PLEASANT 1 SSW, IA US (ID: USC00135796) • 9.0 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 MT PLEASANT 1 SSW, IA 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. 32.0 41.3 50.5 59.8 69.0 2010 2014 2018 2021 2025 Year Annual mean temperature (°F) 2012: Annual mean 52.9°F 2013: Annual mean 48.3°F 2014: Annual mean 46.4°F 2015: Annual mean 50.4°F 2016: Annual mean 51.4°F 2017: Annual mean 51.1°F 2024: Annual mean 53.6°F 2012: Annual mean of daily highs 65.4°F 2013: Annual mean of daily highs 59.7°F 2014: Annual mean of daily highs 57.6°F 2015: Annual mean of daily highs 61.4°F 2016: Annual mean of daily highs 62.2°F 2017: Annual mean of daily highs 63.3°F 2024: Annual mean of daily highs 64.2°F 2010: Annual mean of daily lows 41.9°F 2011: Annual mean of daily lows 39.9°F 2012: Annual mean of daily lows 40.4°F 2013: Annual mean of daily lows 36.9°F 2014: Annual mean of daily lows 35.2°F 2015: Annual mean of daily lows 39.4°F 2016: Annual mean of daily lows 40.6°F 2017: Annual mean of daily lows 38.9°F 2019: Annual mean of daily lows 37.9°F 2024: Annual mean of daily lows 43.1°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 Unavailable 41.9
2011 Unavailable Unavailable 39.9
2012 52.9 65.4 40.4
2013 48.3 59.7 36.9
2014 46.4 57.6 35.2
2015 50.4 61.4 39.4
2016 51.4 62.2 40.6
2017 51.1 63.3 38.9
2018 Unavailable Unavailable Unavailable
2019 Unavailable Unavailable 37.9
2020 Unavailable Unavailable Unavailable
2021 Unavailable Unavailable Unavailable
2022 Unavailable Unavailable Unavailable
2023 Unavailable Unavailable Unavailable
2024 53.6 64.2 43.1
2025 Unavailable Unavailable Unavailable
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.