Idaho weather in September 2024

Expect 25°C daytime maximum temperatures in the shade with on average 10 hours of sunshine per day in Idaho in September. Check more long-term weather averages for Idaho in September before you book your next holiday to Idaho in 2024/2025.

25
25°C max day temperature
10
10 hours of sunshine per day
4
4 days with some rainfall
8
8°C min night temperature
12
12 hours of daylight per day
0
No heat & humidity
19
19 mm of monthly rainfall
6
6 (High) UV index

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The September weather guide for Idaho (Boise) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Top Idaho destinations

Below are average maximum temperatures at popular destinations in Idaho in September. Select a destination to see more weather parameters.

All Idaho destinations

Metric (°C / mm) | Imperial (°F / inches)

More about the USA

How hot is it in Idaho in September?

Daytime temperatures usually reach 25°C in Boise, Idaho in September with no heat and humidity, falling to 8°C at night.

How sunny is it in Idaho in September?

There are normally 10 hours of bright sunshine each day in Boise, Idaho in September - that's 80% of daylight hours.

Does it rain in Idaho in September?

There are usually 4 days with some rain in Boise, Idaho in September and the average monthly rainfall is 19mm.

Idaho September sunrise & sunset times

Browse the sunrise and sunset times for Idaho in September 2024. Select a month to view Idaho sunrise and sunset times for the next 12 months. The Idaho sunrise and sunset times shown below are for Boise.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Date	Sunrise times	Sunset times
Sunday, 1st September 2024	07:09	20:19
Sunday, 15th September 2024	07:25	19:54
Monday, 30th September 2024	07:42	19:26

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Idaho - quick facts
Flight time^✝	13 hours
Time difference	UK -7 to -8 hours
Language(s)	English
Currency	US Dollar
Electricity	A + B plug (120V)
Driving side	Right
Visa^✝	Yes
Why visit?	Nature
Tourist info	Idaho Department of Commerce - Tourism Development