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Island Park city, Idaho

Official LSAD Designation: Island Park city • Census GEOID: 1640600 • Fremont County

Climate Normals & Weather Observations

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

Reference Weather Station: ISLAND PARK, ID US (ID: USC00104598) • Located 8.1 miles from community center • Elevation: 1,917.2 m
Month Average High (°F) Average Low (°F) Mean Temp (°F) Precipitation (in)
January 26.5° 5.9° 16.2° 3.53"
February 29.7° 7.5° 18.6° 2.64"
March 38.6° 14.5° 26.5° 2.05"
April 47.4° 23.1° 35.3° 2.37"
May 59.2° 31.5° 45.4° 2.99"
June 67.3° 37.8° 52.6° 2.63"
July 77.1° 42.8° 60.0° 1.17"
August 77.2° 40.0° 58.6° 1.14"
September 68.0° 32.2° 50.1° 1.66"
October 51.3° 24.1° 37.7° 2.09"
November 35.6° 14.3° 25.0° 2.54"
December 25.5° 6.4° 16.0° 4.01"

Annual Temperature History

2010–2025, completed calendar years only.

NOAA station ISLAND PARK, ID US (ID: USC00104598) • 8.1 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 ISLAND PARK, 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. 17.0 27.0 37.0 47.0 57.0 2010 2014 2018 2021 2025 Year Annual mean temperature (°F) 2010: Annual mean 38.5°F 2011: Annual mean 36.8°F 2012: Annual mean 38.6°F 2017: Annual mean 37.9°F 2018: Annual mean 36.4°F 2019: Annual mean 35.2°F 2020: Annual mean 36.7°F 2021: Annual mean 39.1°F 2022: Annual mean 35.4°F 2010: Annual mean of daily highs 52.4°F 2011: Annual mean of daily highs 50.8°F 2012: Annual mean of daily highs 53.3°F 2015: Annual mean of daily highs 52.8°F 2017: Annual mean of daily highs 50.8°F 2018: Annual mean of daily highs 50.2°F 2019: Annual mean of daily highs 48.5°F 2020: Annual mean of daily highs 51.2°F 2021: Annual mean of daily highs 52.8°F 2022: Annual mean of daily highs 49.7°F 2010: Annual mean of daily lows 24.7°F 2011: Annual mean of daily lows 22.8°F 2012: Annual mean of daily lows 23.9°F 2017: Annual mean of daily lows 25.0°F 2018: Annual mean of daily lows 22.7°F 2019: Annual mean of daily lows 21.8°F 2020: Annual mean of daily lows 22.3°F 2021: Annual mean of daily lows 25.3°F 2022: Annual mean of daily lows 21.1°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 38.5 52.4 24.7
2011 36.8 50.8 22.8
2012 38.6 53.3 23.9
2013 Unavailable Unavailable Unavailable
2014 Unavailable Unavailable Unavailable
2015 Unavailable 52.8 Unavailable
2016 Unavailable Unavailable Unavailable
2017 37.9 50.8 25.0
2018 36.4 50.2 22.7
2019 35.2 48.5 21.8
2020 36.7 51.2 22.3
2021 39.1 52.8 25.3
2022 35.4 49.7 21.1
2023 Unavailable Unavailable Unavailable
2024 Unavailable Unavailable Unavailable
2025 Unavailable Unavailable Unavailable
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.