Climate and Average Weather Year Round in Idaho United States

We show the climate in Idaho by comparing the average weather in 3 representative places: Boise, Idaho Falls, and Sandpoint.

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Boise
Idaho, United States
Idaho Falls
Idaho, United States
Sandpoint
Idaho, United States
Map

Average High and Low Temperature in Idaho

Average High and Low Temperature in IdahoJanFebMarAprMayJunJulAugSepOctNovDec10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F6324933652148728248433NowNowBoiseBoiseIdaho FallsIdaho FallsSandpointSandpoint
The daily average high and low air temperature at 2 meters above the ground.
HighJanFebMarAprMayJunJulAugSepOctNovDec
Boise 38°F45°F55°F64°F72°F82°F92°F90°F80°F65°F49°F38°F
Idaho Falls 29°F35°F47°F58°F67°F77°F86°F85°F74°F60°F43°F30°F
Sandpoint 35°F39°F48°F57°F66°F73°F82°F81°F71°F56°F42°F34°F
LowJanFebMarAprMayJunJulAugSepOctNovDec
Boise 25°F30°F36°F41°F48°F55°F62°F61°F52°F43°F33°F25°F
Idaho Falls 14°F19°F28°F34°F41°F47°F52°F50°F43°F34°F25°F16°F
Sandpoint 25°F27°F31°F36°F42°F47°F50°F49°F43°F36°F30°F25°F

Boise

Average Hourly Temperature in BoiseJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowfreezingvery coldvery coldcoldcoldcoolhotfreezingwarmcomfortablefreezingfreezingcomfortable

Idaho Falls

Average Hourly Temperature in Idaho FallsJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowfreezingvery coldcoldcoolcoolwarmvery coldcomfortable

Sandpoint

Average Hourly Temperature in SandpointJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowfreezingvery coldvery coldcoldcoolwarmcoolcomfortable
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Chance of Clearer Skies in Idaho

Chance of Clearer Skies in IdahoJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%84417822NowNowBoiseBoiseIdaho FallsIdaho FallsSandpointSandpoint
The percentage of time the sky is clear, mostly clear, or partly cloudy (i.e., less than 60% of the sky is covered by clouds).
Clearer SkiesJanFebMarAprMayJunJulAugSepOctNovDec
Boise 42%43%43%49%54%67%81%81%73%60%46%43%
Idaho Falls 42%43%42%46%51%66%79%78%70%59%47%43%
Sandpoint 23%27%32%40%46%55%73%72%62%45%27%24%

Daily Chance of Precipitation in Idaho

Daily Chance of Precipitation in IdahoJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%2832694310NowNowBoiseBoiseIdaho FallsIdaho FallsSandpointSandpoint
The percentage of days in which precipitation is observed, excluding trace quantities.
Days of Precip.JanFebMarAprMayJunJulAugSepOctNovDec
Boise 7.3d6.1d6.7d5.5d5.7d3.2d1.4d1.5d2.5d4.2d7.5d8.1d
Idaho Falls 5.4d4.5d5.4d5.7d7.7d5.2d3.3d3.9d4.1d4.7d5.7d5.9d
Sandpoint 10.6d8.8d10.4d8.4d9.0d8.4d4.6d3.6d4.8d8.2d12.3d11.7d

Average Monthly Rainfall in Idaho

Average Monthly Rainfall in IdahoJanFebMarAprMayJunJulAugSepOctNovDec0.5 in0.5 in1.0 in1.0 in1.5 in1.5 in2.0 in2.0 in2.5 in2.5 in3.0 in3.0 in3.5 in3.5 in4.0 in4.0 in1.50.21.50.43.50.7NowNowBoiseBoiseIdaho FallsIdaho FallsSandpointSandpoint
The average rainfall accumulated over the course of a sliding 31-day period centered on the day in question.
RainfallJanFebMarAprMayJunJulAugSepOctNovDec
Boise 1.2″1.1″1.2″1.0″1.0″0.6″0.2″0.2″0.5″0.8″1.4″1.5″
Idaho Falls 0.5″0.5″0.7″1.0″1.5″1.0″0.5″0.6″0.8″0.9″0.8″0.6″
Sandpoint 2.1″1.9″2.2″1.8″2.0″2.1″0.9″0.7″1.1″2.1″3.5″2.6″

Average Monthly Snowfall in Idaho

Average Monthly Snowfall in IdahoJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in2 in2 in4 in4 in6 in6 in8 in8 in10 in10 in12 in12 in3.44.710.4NowNowBoiseBoiseIdaho FallsIdaho FallsSandpointSandpoint
The average snowfall accumulated over the course of a sliding 31-day period centered on the day in question.
SnowfallJanFebMarAprMayJunJulAugSepOctNovDec
Boise 2.5″1.1″0.1″0.0″0.0″0.0″0.0″0.0″0.0″0.0″0.9″2.9″
Idaho Falls 4.1″2.7″1.0″0.3″0.0″0.0″0.0″0.0″0.0″0.2″2.1″4.4″
Sandpoint 8.6″5.0″2.1″0.3″0.0″0.0″0.0″0.0″0.0″0.3″3.7″9.0″

Hours of Daylight in Idaho

Hours of Daylight in IdahoJanFebMarAprMayJunJulAugSepOctNovDec4 hr4 hr6 hr6 hr8 hr8 hr10 hr10 hr12 hr12 hr14 hr14 hr16 hr16 hr18 hr18 hr20 hr20 hr15.48.916.18.3NowNowBoiseBoiseIdaho FallsIdaho FallsSandpointSandpoint
The number of hours during which the Sun is at least partly above the horizon.
DaylightJanFebMarAprMayJunJulAugSepOctNovDec
Boise 9.4h10.6h12.0h13.5h14.8h15.4h15.0h13.9h12.4h10.9h9.6h9.0h
Idaho Falls 9.4h10.6h12.0h13.5h14.8h15.4h15.0h13.9h12.4h10.9h9.6h9.0h
Sandpoint 8.9h10.3h12.0h13.8h15.3h16.0h15.6h14.2h12.5h10.7h9.2h8.4h

Chance of Muggy Conditions in Idaho

Chance of Muggy Conditions in IdahoJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%NowNowBoiseBoiseIdaho FallsIdaho Falls
The percentage of time that is muggy, oppressive, or miserable (i.e., a dew point greater than 65°F).
Muggy daysJanFebMarAprMayJunJulAugSepOctNovDec
Boise 0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d
Idaho Falls 0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d
Sandpoint 0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d

Average Wind Speed in Idaho

Average Wind Speed in IdahoJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph1 mph1 mph2 mph2 mph3 mph3 mph4 mph4 mph5 mph5 mph6 mph6 mph7 mph7 mph8 mph8 mph9 mph9 mph10 mph10 mph7.56.39.67.44.23.8NowNowBoiseBoiseIdaho FallsIdaho FallsSandpointSandpoint
The average of mean hourly wind speeds at 10 meters above the ground.
Wind Speed (mph)JanFebMarAprMayJunJulAugSepOctNovDec
Boise 6.57.07.37.47.26.96.66.46.36.56.86.8
Idaho Falls 8.08.59.39.08.48.47.87.67.67.88.38.1
Sandpoint 3.83.94.04.14.03.93.83.94.03.93.93.8

Tourism Score in Idaho

Tourism Score in IdahoJanFebMarAprMayJunJulAugSepOctNovDec002244668810107.66.3NowNowBoiseBoiseIdaho FallsIdaho FallsSandpointSandpoint
The tourism score, which favors clear, rainless days with perceived temperatures between 65°F and 80°F.

Beach/Pool Score in Idaho

Beach/Pool Score in IdahoJanFebMarAprMayJunJulAugSepOctNovDec002244668810105.53.73.0NowNowBoiseBoiseIdaho FallsIdaho FallsSandpointSandpoint
The beach/pool score, which favors clear, rainless days with perceived temperatures between 75°F and 90°F.

Growing Season in Idaho

Growing Season in IdahoJanFebMarAprMayJunJulAugSepOctNovDec0%0%20%20%40%40%60%60%80%80%100%100%NowNowBoiseBoiseIdaho FallsIdaho FallsSandpointSandpoint
The percentage chance that a given day is within the growing season, defined as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

Growing Degree Days in Idaho

Growing Degree Days in IdahoJanFebMarAprMayJunJulAugSepOctNovDec500°F500°F1,000°F1,000°F1,500°F1,500°F2,000°F2,000°F2,500°F2,500°F3,000°F3,000°F3,500°F3,500°FNowNowBoiseBoiseIdaho FallsIdaho FallsSandpointSandpoint
The average growing degree days accumulated over the course of the year, where growing degree days are defined as the integral of warmth above a base temperature (50°F in this case).

Average Daily Incident Shortwave Solar Energy in Idaho

Average Daily Incident Shortwave Solar Energy in IdahoJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWh8.21.67.40.9NowNowBoiseBoiseIdaho FallsIdaho FallsSandpointSandpoint
The average daily shortwave solar energy reaching the ground per square meter.
Solar Energy (kWh)JanFebMarAprMayJunJulAugSepOctNovDec
Boise 2.02.94.25.76.97.88.07.05.53.72.21.7
Idaho Falls 2.13.14.45.86.97.97.96.95.43.72.31.8
Sandpoint 1.22.13.44.96.16.87.36.34.62.71.31.0

This report illustrates the typical weather for Boise, Idaho Falls, and Sandpoint year round, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

The details of the data sources used on this page vary between places and are discussed in detail on each place's dedicated page:

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.

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