Boise City Weather in September
September in Boise City brings high temperatures, with daytime highs of 29°C (84°F) and nights around 12°C (54°F). The perfect weather makes it a solid choice for a visit.
Rainfall in Boise City in September
Rain is expected on roughly 5 days, totalling around 46 mm (1.8 in) for the month. The rain this month typically falls in concentrated bursts rather than all-day showers. Expect a few heavier spells rather than constant grey skies.
Temperature in Boise City in September
If you're visiting Boise City in September, expect perfect temperatures with highs of 29°C (84°F) and overnight lows of 12°C (54°F). This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. At 12°C (54°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.If you favor pleasant temperatures and minimal rainfall, September is one of the best months to visit Boise City.
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 Boise City's climate page.
Boise City Temperature in September
Min Temperature
12°C (54°F)
Max Temperature
29°C (84°F)
Chance of Rain
17%
Precipitation
46 mm (1.8 in)
Rainy days
5 days
Humidity
52% *
Best Places in the United States of America in September
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in September →
perfect weather
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tolerable
unpleasant
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What to Wear in Boise City in September
Warm but pleasant conditions in Boise City in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Wet weather is likely, so pack waterproof gear for multiple rainy days.What To Do in Boise City in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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 Boise City's climate page.
See the full Boise City climate overview or explore weather in the United States of America.
