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Letha CDP, Idaho

Official LSAD Designation: Letha CDP • Census GEOID: 1646450 • Gem County

Climate Normals & Weather Observations

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

Reference Weather Station: EMMETT 2 E, ID US (ID: USC00102942) • Located 9.3 miles from community center • Elevation: 728.5 m
Month Average High (°F) Average Low (°F) Mean Temp (°F) Precipitation (in)
January 38.3° 23.3° 30.8° 1.77"
February 46.0° 26.6° 36.3° 1.26"
March 55.9° 31.8° 43.9° 1.60"
April 62.8° 35.8° 49.3° 1.22"
May 72.3° 43.5° 57.9° 1.47"
June 80.9° 50.3° 65.6° 0.77"
July 91.7° 57.6° 74.7° 0.25"
August 90.4° 56.5° 73.5° 0.17"
September 79.7° 48.2° 64.0° 0.42"
October 65.2° 38.1° 51.6° 0.90"
November 49.2° 29.1° 39.1° 1.33"
December 38.9° 23.5° 31.2° 2.12"

Annual Temperature History

2010–2025, completed calendar years only.

NOAA station EMMETT 2 E, ID US (ID: USC00102942) • 9.3 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 EMMETT 2 E, ID 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. 33.0 42.5 52.0 61.5 71.0 2010 2014 2018 2021 2025 Year Annual mean temperature (°F) 2010: Annual mean 50.9°F 2011: Annual mean 50.0°F 2012: Annual mean 52.7°F 2013: Annual mean 49.9°F 2014: Annual mean 52.4°F 2015: Annual mean 53.9°F 2017: Annual mean 50.7°F 2019: Annual mean 51.2°F 2020: Annual mean 51.9°F 2022: Annual mean 50.3°F 2023: Annual mean 51.3°F 2024: Annual mean 52.1°F 2025: Annual mean 53.2°F 2010: Annual mean of daily highs 63.1°F 2011: Annual mean of daily highs 62.9°F 2012: Annual mean of daily highs 66.1°F 2013: Annual mean of daily highs 63.1°F 2014: Annual mean of daily highs 65.3°F 2015: Annual mean of daily highs 67.0°F 2017: Annual mean of daily highs 63.0°F 2019: Annual mean of daily highs 63.1°F 2020: Annual mean of daily highs 64.7°F 2022: Annual mean of daily highs 63.5°F 2023: Annual mean of daily highs 63.5°F 2024: Annual mean of daily highs 65.1°F 2025: Annual mean of daily highs 66.3°F 2010: Annual mean of daily lows 38.6°F 2011: Annual mean of daily lows 37.1°F 2012: Annual mean of daily lows 39.4°F 2013: Annual mean of daily lows 36.7°F 2014: Annual mean of daily lows 39.6°F 2015: Annual mean of daily lows 40.7°F 2017: Annual mean of daily lows 38.4°F 2019: Annual mean of daily lows 39.2°F 2020: Annual mean of daily lows 39.1°F 2022: Annual mean of daily lows 37.2°F 2023: Annual mean of daily lows 39.0°F 2024: Annual mean of daily lows 39.2°F 2025: Annual mean of daily lows 40.0°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 50.9 63.1 38.6
2011 50.0 62.9 37.1
2012 52.7 66.1 39.4
2013 49.9 63.1 36.7
2014 52.4 65.3 39.6
2015 53.9 67.0 40.7
2016 Unavailable Unavailable Unavailable
2017 50.7 63.0 38.4
2018 Unavailable Unavailable Unavailable
2019 51.2 63.1 39.2
2020 51.9 64.7 39.1
2021 Unavailable Unavailable Unavailable
2022 50.3 63.5 37.2
2023 51.3 63.5 39.0
2024 52.1 65.1 39.2
2025 53.2 66.3 40.0
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.