Climate Comfort Score
57/100
Moderate
2026 data Public-data reference. official source
Island Park, ID Climate
Temperature, precipitation, and comfort score from NOAA NCEI 1991-2020 normals →
30-year climate normals from 1 weather station (1991-2020).
Island Park, Idaho has an average annual temperature of 37°F and a climate comfort score of 57/100 (Moderate). Annual precipitation totals 28.8". Based on NOAA 30-year normals (1991–2020).
Avg Temperature
37°F (3°C)
Avg High
50°F
Avg Low
23°F
Annual Precip
28.8"
Comfort Score
57/100
Moderate
Avg Annual Temperature
37°F
30-year mean (NOAA NCEI)
Annual Precipitation
28.8"
Liquid-equivalent total
Comfort score vs national 100-point ceiling (Island Park) 57.0%
National median (≈55)
PlainClimate composite — temperature mildness, humidity, precipitation, extreme-weather frequency. Moderate for the Island Park area.
Warming context for Island Park
MethodologyHow the U.S. land temperature anomaly tracks against the global mean since 1900. The current NOAA 1991-2020 normal for Island Park captures average conditions across the spread shown — the most recent decade is warmer than the 30-year mean.
- United States land mean (NOAA NCEI) +0.11 °C/decade
- Global anomaly (NASA GISTEMP) +0.11 °C/decade
- Paris Agreement thresholds 1.5°C / 2.0°C
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 27°F (-3°C) | 6°F (-14°C) | 16°F (-9°C) | 3.5" | 30.9 | 0.0 |
| February | 30°F (-1°C) | 8°F (-14°C) | 19°F (-7°C) | 2.6" | 28.0 | 0.0 |
| March | 39°F (4°C) | 15°F (-10°C) | 27°F (-3°C) | 2.0" | 30.3 | 0.0 |
| April | 47°F (9°C) | 23°F (-5°C) | 35°F (2°C) | 2.4" | 27.6 | 0.0 |
| May | 59°F (15°C) | 32°F (0°C) | 45°F (7°C) | 3.0" | 17.2 | 0.0 |
| June | 67°F (20°C) | 38°F (3°C) | 53°F (11°C) | 2.6" | 5.8 | 0.1 |
| July | 77°F (25°C) | 43°F (6°C) | 60°F (16°C) | 1.2" | 1.1 | 1.5 |
| August | 77°F (25°C) | 40°F (4°C) | 59°F (15°C) | 1.1" | 3.0 | 0.9 |
| September | 68°F (20°C) | 32°F (0°C) | 50°F (10°C) | 1.7" | 15.7 | 0.0 |
| October | 51°F (11°C) | 24°F (-4°C) | 38°F (3°C) | 2.1" | 27.1 | 0.0 |
| November | 36°F (2°C) | 14°F (-10°C) | 25°F (-4°C) | 2.5" | 29.4 | 0.0 |
| December | 26°F (-4°C) | 6°F (-14°C) | 16°F (-9°C) | 4.0" | 31.0 | 0.0 |
Monthly Precipitation
Average monthly rainfall
January 3.5"
February 2.6"
March 2.0"
April 2.4"
May 3.0"
June 2.6"
July 1.2"
August 1.1"
September 1.7"
October 2.1"
November 2.5"
December 4.0"
Frost Dates & Growing Season
First Fall Freeze
N/A
50% probability date
Last Spring Freeze
N/A
50% probability date
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
10,272
Higher = more heating needed
Cooling Degree Days
23
Higher = more cooling needed
Warmest Month
July
Coldest Month
December
Related Data
PlainEnviro
EPA environmental data — pollution, water quality, and environmental health by location
PlainCarbon
Carbon emissions data — greenhouse gas reporting and facility-level CO2 data
PlainHazard
Natural disaster data — weather-related hazards, FEMA declarations, and risk profiles
PlainAirData
EPA air quality data — AQI readings, pollutant levels, and air quality trends
Climate Guides
Climate Insight: Island Park, ID
The NOAA 1991–2020 climate normals describe Island Park, Idaho as a location with an annual average temperature of 37°F, ranging from a mean daily high of 50°F to a mean daily low of 23°F. July is typically the warmest month of the year, while December is the coldest. These thirty-year averages, computed from station USC00104598, smooth out year-to-year variability and give a baseline expectation for typical conditions in any given month.
Precipitation patterns matter as much as temperature for anyone planning to live, garden, or travel here. Island Park receives roughly 28.8 inches of precipitation each year, predominantly as rainfall. Growing-season length varies with elevation and microclimate, with the last spring freeze near N/A and the first fall freeze near N/A. For energy use, 10,272 heating degree days and 23 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Island Park scores 57/100 (Moderate), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. Use the monthly tables above to plan around specific windows — shoulder seasons for mild highs and lows, peak summer for July-driven heat, or deep winter for December-driven cold. All figures here are thirty-year averages: any single year may run warmer, wetter, drier, or cooler than the normal, so treat them as planning guidance rather than forecasts.
Frequently Asked Questions
What is the average temperature in Island Park, ID? ▼
The average annual temperature in Island Park, Idaho is 37°F. The warmest month averages 77°F (25°C) and the coldest averages 6°F (-14°C).
How much rain does Island Park get? ▼
Island Park receives 28.8 inches of precipitation annually. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Island Park? ▼
Island Park has a climate comfort score of 57/100 (Moderate). This score considers temperature mildness, humidity, precipitation, and extreme weather frequency.
When is the growing season in Island Park? ▼
Growing season data is not available for Island Park.
How much energy does heating and cooling require in Island Park? ▼
Island Park has 10,272 heating degree days and 23 cooling degree days annually. Higher heating degree days indicate greater winter energy demand, while higher cooling degree days indicate greater summer cooling needs.
Where does this Island Park climate data come from? ▼
All climate data comes from NOAA U.S. Climate Normals v1.0.1, covering the 30-year period from 1991 to 2020. Data is collected from weather station USC00104598. These 30-year averages are the standard reference for typical weather conditions.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00104598. For informational purposes only.
Read our methodology — how this data is sourced, computed, and verified.
Related
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainClimate Editorial
