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Mertzon city, Texas

Official LSAD Designation: Mertzon city • Census GEOID: 4847832 • Irion County

Climate Normals & Weather Observations

30-year climate normals (1991–2020) and weather observations for Mertzon city.

Reference Weather Station: MERTZON 12NNW, TX US (ID: USC00415861) • Located 12.5 miles from community center • Elevation: 672.1 m
Month Average High (°F) Average Low (°F) Mean Temp (°F) Precipitation (in)
January 58.2° 29.3° 43.8° 0.89"
February 63.5° 33.1° 48.3° 1.03"
March 70.5° 40.5° 55.5° 1.52"
April 79.5° 48.5° 64.0° 1.57"
May 86.9° 58.5° 72.7° 2.64"
June 92.6° 67.4° 80.0° 2.54"
July 94.2° 69.6° 81.9° 1.90"
August 94.6° 69.4° 82.0° 2.35"
September 87.4° 62.0° 74.7° 2.59"
October 79.5° 50.9° 65.2° 2.17"
November 67.8° 38.5° 53.2° 1.47"
December 60.1° 30.7° 45.4° 0.90"

Annual Temperature History

2010–2025, completed calendar years only.

NOAA station MERTZON 12NNW, TX US (ID: USC00415861) • 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 MERTZON 12NNW, TX 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. 46.0 55.3 64.5 73.8 83.0 2010 2014 2018 2021 2025 Year Annual mean temperature (°F) 2017: Annual mean 65.2°F 2018: Annual mean 63.8°F 2021: Annual mean 63.8°F 2022: Annual mean 64.9°F 2014: Annual mean of daily highs 77.7°F 2016: Annual mean of daily highs 78.4°F 2017: Annual mean of daily highs 79.0°F 2018: Annual mean of daily highs 76.9°F 2021: Annual mean of daily highs 77.7°F 2022: Annual mean of daily highs 79.6°F 2017: Annual mean of daily lows 51.4°F 2018: Annual mean of daily lows 50.7°F 2021: Annual mean of daily lows 50.0°F 2022: Annual mean of daily lows 50.2°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 Unavailable Unavailable
2011 Unavailable Unavailable Unavailable
2012 Unavailable Unavailable Unavailable
2013 Unavailable Unavailable Unavailable
2014 Unavailable 77.7 Unavailable
2015 Unavailable Unavailable Unavailable
2016 Unavailable 78.4 Unavailable
2017 65.2 79.0 51.4
2018 63.8 76.9 50.7
2019 Unavailable Unavailable Unavailable
2020 Unavailable Unavailable Unavailable
2021 63.8 77.7 50.0
2022 64.9 79.6 50.2
2023 Unavailable Unavailable Unavailable
2024 Unavailable Unavailable Unavailable
2025 Unavailable Unavailable Unavailable
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.