Idaho weather in September
Planning a journey to Idaho this September and curious over the weather conditions to await? Your essential details are found on this page, answering your query:
What is the weather like in Idaho in September?
Idaho is a region in the United States of America. September in Idaho generally has temperatures that range from pleasant to warm, with precipitation levels ranging from low to moderate.
The average highest temperatures fluctuate between pleasant in Wallace at 20°C to warm in Hagerman at 28°C. Nighttime temperatures generally drop to 8°C in Hagerman and 7°C in Wallace.
In September, precipitation varies across different areas. From low rainfall in Hagerman with an average of 8.6 mm to moderate rainfall in Victor with 47 mm. The days are mostly sunny, with an average total of around 303 hours of sunshine in Boise. The sunlight during this month doesn't just make the days brighter, it also seems to make everyone a bit more cheerful.
To learn more about the conditions in specific areas of Idaho in September, check out the map below. For more details on the yearly weather, visit our Idaho climate page.
Where to go in Idaho in September
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Popular destinations in Idaho
What is the weather like in September for the 5 most popular destinations in Idaho?
Average weather in Boise
In September Boise generally has high temperatures with maximum daytime temperatures around 27°C, minimum nighttime temperatures around 10°C and low monthly rainfall. So on average the conditions are perfect that month.
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Average weather in Coeur d'Alene
In September Coeur d'Alene generally has high temperatures with maximum daytime temperatures around 23°C, minimum nighttime temperatures around 8°C and low monthly rainfall. So on average the conditions are perfect that month.
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Average weather in Idaho Falls
In September Idaho Falls generally has high temperatures with maximum daytime temperatures around 24°C, minimum nighttime temperatures around 6°C and low monthly rainfall. So on average the conditions are perfect that month.
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Average weather in Ketchum
In September Ketchum generally has pleasant temperatures with maximum daytime temperatures around 21°C, minimum nighttime temperatures around 4°C and moderate monthly rainfall. So on average the conditions are perfect that month.
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Average weather in Pocatello
In September Pocatello generally has high temperatures with maximum daytime temperatures around 25°C, minimum nighttime temperatures around 8°C and moderate monthly rainfall. So on average the conditions are perfect that month.
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Is your destination not in the list? Have a look at other destinations in Idaho, in the United States of America.
Is September the best time to visit Idaho?
We consider September to be one of the best times to travel to Idaho. Typically, the climate in Boise is perfect.
On average, the best time to visit Idaho is in May, June, August, September and October with generally 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.
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 climate conditions. Find out where to go with our weather planner.