Boise

Idaho Weather in July

Average temperatures, rainfall, sunshine and the best places to visit in Idaho, the United States of America in July.

Considering a trip to Idaho, the United States of America this July and wondering about the expected weather conditions? Find all the crucial information you need right here, addressing your question:

What to Expect in Idaho in July

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

Temperatures

During the day temperatures vary from warm in Wallace at 26°C (79°F) to very warm in Mountain Home at 35°C (95°F). At night it cools down to 15°C (59°F) in Mountain Home and 10°C (50°F) in Wallace. On average, July is the warmest month of the year in Idaho, the United States of America. So be prepared and pack summer clothes.

For specific regional insights in Idaho, the United States of America, refer to the map provided below.

Precipitation

In July, precipitation varies across different areas. From almost no rainfall in Mountain Home with an average of 3 mm (0.1 in) to low rainfall in Victor with 26 mm (1 in).

Average sunshine

Most destinations offer generous amounts of sunshine this July. For example, Boise gets approximately 399 hours of sunlight, perfect for anyone wanting bright, sunny days.

Explore Idaho by month

Pick a month to see the average temperature, rainfall and sunshine in Idaho — and find the best time to visit. (based on Boise)

Best Places to Visit in Idaho in July

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

perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in Idaho

What is the weather like in July for some of the most popular destinations in Idaho, the United States of America?

Temperature range in Idaho (July)

Precipitation variation in Idaho (July)

Boise

In July Boise generally has very high temperatures with maximum daytime temperatures around 34°C (93°F), minimum nighttime temperatures around 15°C (59°F) and low monthly rainfall. So on average the conditions are pleasant that month.

June
July
August
Max temperature
27°C (81°F)
34°C (93°F)
32°C (90°F)
Min temperature
11°C (52°F)
15°C (59°F)
14°C (57°F)
Monthly sun hours
348 hours
399 hours
358 hours
Monthly rainfall
21 mm (0.8 in)
8.4 mm (0.3 in)
8.3 mm (0.3 in)
Monthly rainy days
9 days
4 days
4 days
Weather conditions

Coeur d'Alene

In July Coeur d'Alene generally has high temperatures with maximum daytime temperatures around 29°C (84°F), minimum nighttime temperatures around 13°C (55°F) and low monthly rainfall. So on average the conditions are perfect that month.

June
July
August
Max temperature
22°C (72°F)
29°C (84°F)
29°C (84°F)
Min temperature
10°C (50°F)
13°C (55°F)
12°C (54°F)
Monthly sun hours
322 hours
383 hours
340 hours
Monthly rainfall
63 mm (2.5 in)
19 mm (0.7 in)
20 mm (0.8 in)
Monthly rainy days
11 days
5 days
5 days
Weather conditions

Idaho Falls

In July Idaho Falls generally has very high temperatures with maximum daytime temperatures around 31°C (88°F), minimum nighttime temperatures around 11°C (52°F) and low monthly rainfall. So on average the conditions are perfect that month.

June
July
August
Max temperature
25°C (77°F)
31°C (88°F)
30°C (86°F)
Min temperature
8°C (46°F)
11°C (52°F)
10°C (50°F)
Monthly rainfall
22 mm (0.9 in)
8.5 mm (0.3 in)
16 mm (0.6 in)
Monthly rainy days
7 days
4 days
5 days
Weather conditions

Ketchum

In July Ketchum generally has high temperatures with maximum daytime temperatures around 27°C (81°F), minimum nighttime temperatures around 9°C (48°F) and low monthly rainfall. So on average the conditions are perfect that month.

June
July
August
Max temperature
21°C (70°F)
27°C (81°F)
26°C (79°F)
Min temperature
5°C (41°F)
9°C (48°F)
8°C (46°F)
Monthly rainfall
31 mm (1.2 in)
11 mm (0.4 in)
19 mm (0.7 in)
Monthly rainy days
8 days
5 days
6 days
Weather conditions

Pocatello

In July Pocatello generally has very high temperatures with maximum daytime temperatures around 32°C (90°F), minimum nighttime temperatures around 14°C (57°F) and low monthly rainfall. So on average the conditions are perfect that month.

June
July
August
Max temperature
26°C (79°F)
32°C (90°F)
31°C (88°F)
Min temperature
10°C (50°F)
14°C (57°F)
13°C (55°F)
Monthly rainfall
29 mm (1.1 in)
16 mm (0.6 in)
27 mm (1.1 in)
Monthly rainy days
8 days
6 days
6 days
Weather conditions

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

In our records: the United States of America July extremes

Notable July records observed across cities in the United States of America in our climate database (1976 – 2026). Historic readings can vary in quality, so treat these as illustrative.

  • In our records, the warmest July day in the United States of America reached 51°C (124°F) in Palm Desert on July 28, 1995.

Popular cities in July

Day & night temperatures, rainfall and average weather in Idaho in July.

City Weather Day temp Night temp Rainfall
Boise 34°C (93°F) 15°C (59°F) 8.4 mm (0.3 in)
Coeur d'Alene 29°C (84°F) 13°C (55°F) 19 mm (0.7 in)
Idaho Falls 31°C (88°F) 11°C (52°F) 8.5 mm (0.3 in)
Ketchum 27°C (81°F) 9°C (48°F) 11 mm (0.4 in)
Pocatello 32°C (90°F) 14°C (57°F) 16 mm (0.6 in)
Island Park 27°C (81°F) 7°C (45°F) 22 mm (0.9 in)

Idaho weather in July: frequently asked questions

What is the weather like in Idaho, the United States of America in July?

July in Idaho, the United States of America brings poor weather. In Boise, daytime temperatures are typically around 34°C (93°F) and nighttime lows hover near 15°C (59°F).

What is the average temperature in Idaho, the United States of America in July?

In Boise, the average daytime high in July is 34°C (93°F), while nighttime temperatures drop to around 15°C (59°F).

Does Idaho, the United States of America get a lot of rain in July?

Not particularly. Boise averages just 8.4 mm (0.3 in) of rain in July, making it a mostly dry month for Idaho, the United States of America.

Is July a Good Time to Visit Idaho, the United States of America?

In our view, July might not be the best time to travel to Idaho, the United States of America with often pleasant weather in Boise.

Generally speaking, the best visiting conditions can be found in May, June, September and October offering mostly perfect weather in Boise. On the other hand, the weather in January, July, November and December tend to be poor.

Interested in more climate information?

We have much more information about the climate in Idaho.

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.

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.