Weather in September in Idaho
Thinking about venturing to Idaho this September 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 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.
Temperatures
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.To learn more about the conditions in specific areas of Idaho, check out the map below.
Precipitation
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.Average sunshine
The city Boise usually sees around 303 hours of sunlight, indicating many sunny days.For a more detailed look at Idaho's conditions throughout the year, check out our Idaho climate page.
Where to go in Idaho in September
Select a Month of Interest
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Idaho's climate page.
Popular destinations
What is the weather like in September for the 5 most popular destinations in Idaho?
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.
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.
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.
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.
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.
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.
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.