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Weather in August in Idaho

Thinking about venturing to Idaho this August and curious about the weather conditions to expect? This page holds all the key information you seek, responding to your question:

What is the weather like in Idaho in August?

Idaho is a region in the United States of America. August in Idaho generally has temperatures that range from warm to very warm, with precipitation levels ranging from almost none to moderate. August falls during the summer season.

Temperatures

Based on our climate data spanning from 1990-2020, the average maximum temperature is warm in Wallace at 25°C to very warm in Lewiston at 33°C. Nighttime temperatures generally drop to 16°C in Lewiston and 10°C in Wallace. The temperatures cited for both day and night represent usual averages, but it's possible some days could be hotter. It's advisable to dress accordingly to handle the heat.

Precipitation

In August, precipitation varies across different areas. From almost no rainfall in Mountain Home with an average of 3.7 mm to moderate rainfall in Victor with 37 mm. Looking at the climate data spanning the last 30 years, this month usually has the lowest rainfall in Boise, marking it as the year's driest month.

Average sunshine

The city Boise usually sees around 358 hours of sunlight, indicating many sunny days.

For a closer look at August's conditions in Idaho, see the map below. For a more detailed look at Idaho's yearly weather, check out our Idaho climate page.

Where to go in Idaho in August

Find more information for the most popular destinations in the Idaho on the map below. Click on a destination dot for more detailes.

Map not visible? Whoops sorry! Please refresh the page.
Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

Popular destinations

What is the weather like in August for the 5 most popular destinations in Idaho?

Boise

In August Boise generally has very high temperatures with maximum daytime temperatures around 32°C, minimum nighttime temperatures around 14°C and low monthly rainfall. So on average the conditions are perfect that month.

Boise
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   July July
<<  
34°C 
15°C 
399 hours 
8.4 mm 
4 days 
32°C 
14°C 
358 hours 
8.3 mm 
4 days 
27°C 
10°C 
303 hours 
13 mm 
5 days 
Climate in Boise

Coeur d'Alene

In August Coeur d'Alene generally has high temperatures with maximum daytime temperatures around 29°C, minimum nighttime temperatures around 12°C and low monthly rainfall. So on average the conditions are perfect that month.

Coeur d'Alene
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   July July
<<  
29°C 
13°C 
383 hours 
19 mm 
5 days 
29°C 
12°C 
340 hours 
20 mm 
5 days 
23°C 
8°C 
272 hours 
23 mm 
7 days 
Climate in Coeur d'Alene

Idaho Falls

In August Idaho Falls generally has high temperatures with maximum daytime temperatures around 30°C, minimum nighttime temperatures around 10°C and low monthly rainfall. So on average the conditions are perfect that month.

Idaho Falls
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   July July
<<  
31°C 
11°C 
8.5 mm 
4 days 
30°C 
10°C 
16 mm 
5 days 
24°C 
6°C 
26 mm 
5 days 
Climate in Idaho Falls

Ketchum

In August Ketchum generally has high temperatures with maximum daytime temperatures around 26°C, minimum nighttime temperatures around 8°C and low monthly rainfall. So on average the conditions are perfect that month.

Ketchum
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   July July
<<  
27°C 
9°C 
11 mm 
5 days 
26°C 
8°C 
19 mm 
6 days 
21°C 
4°C 
31 mm 
6 days 
Climate in Ketchum

Pocatello

In August Pocatello generally has very high temperatures with maximum daytime temperatures around 31°C, minimum nighttime temperatures around 13°C and low monthly rainfall. So on average the conditions are perfect that month.

Pocatello
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   July July
<<  
32°C 
14°C 
16 mm 
6 days 
31°C 
13°C 
27 mm 
6 days 
25°C 
8°C 
31 mm 
6 days 
Climate in Pocatello

Is your destination not in the list? Have a look at other destinations in Idaho, in the United States of America.

Is August the best time to visit Idaho?

We consider August to be one of the best times to travel to Idaho. Typically, the climate in Boise is perfect.

Generally speaking, May, June, August, September and October provide perfect weather in Boise. On the other hand, the weather in January, November and December tend to be poor.

Interested in more climate information?

We have much more information about the climate in Idaho. Interested in the weather conditions in a specific month? Select the month below.

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  • Weather and climate has detailed information for every country in the world. Are you going to the United States of America? Get detailed historical weather averages for many cities in the United States of America.

    Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.