Temperature in Idaho in August

Daytime highs, nighttime lows and the warmest cities in Idaho, the United States of America this August.

Idaho, the United States of America, a region in the United States of America, experiences maximum daytime temperatures in August ranging from 25°C (77°F) in Wallace to 33°C (91°F) in Lewiston. Nighttime temperatures generally drop to 16°C (61°F) in Lewiston and 10°C (50°F) in Wallace. The month of August is in the summer season.

What is the temperature of the different cities in Idaho, the United States of America in August?

Discover the typical August temperatures for the most popular locations of Idaho on the map below. Detailed insights are just a click away.

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Check the conditions for any month of the year.

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For a detailed overview over the year and the best time to visit Idaho, check out our Idaho's climate page.

See also: Idaho weather by month.

Best Places to Visit in Idaho in August

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Idaho.

Conditions Temperatures Precipitation
Avg daytime high -5°C (23°F) cold → 32°C (90°F) hot

Marker color shows the average daytime high temperature in August: blue is cold, red is hot.

See all August weather averages, cities and regions in Idaho

Idaho temperatures in August: frequently asked questions

How hot does it get in Idaho, the United States of America in August?

Average daytime highs in Idaho, the United States of America during August reach about 32°C (90°F) in Boise.

How cold does it get at night in Idaho, the United States of America in August?

Boise sees nighttime lows close to 14°C (57°F) in August.

What is the warmest city in August in Idaho, the United States of America?

Based on our systematic data collection, Lewiston has been identified as the city with the highest average temperatures. The daytime temperature usually hovers around 33°C (91°F), while at night it goes down to an approximate temperature of 16°C (61°F).

What is the coldest city in August in Idaho, the United States of America?

Our database indicates that in August, Wallace is the city with the coolest temperatures in Idaho, the United States of America. You can expect daytime highs of 25°C (77°F) and nighttime lows close to 10°C (50°F).

How much sun does Idaho, the United States of America get in August?

Boise enjoys approximately 358 hours of sunshine, offering a mostly sunny climate that adds a pleasant and vibrant feel to the month.

Interested in more climate information?

We have much more information about the climate in Idaho.

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