Thermopolis Weather in September
September in Thermopolis brings high temperatures, with highs of 26°C (79°F) and nights dropping to 7°C (45°F). With perfect weather conditions overall, it's a good time to visit.
Rainfall in Thermopolis in September
Typically, about 6 days will experience rainfall, with an average of 28 mm (1.1 in) for the month. When rain does fall, showers tend to be light and brief. Most days will be dry.
Temperature in Thermopolis in September
September is one of the better months to visit Thermopolis. Expect 26°C (79°F) during the day and 7°C (45°F) at night. This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. At 7°C (45°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.Our weather planner can help you find worldwide destinations with pleasant weather during this period. May, June and September typically offer the best weather for Thermopolis.
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 Thermopolis's climate page.
Thermopolis Temperature in September
Min Temperature
7°C (45°F)
Max Temperature
26°C (79°F)
Chance of Rain
20%
Precipitation
28 mm (1.1 in)
Rainy days
6 days
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
pleasant
tolerable
unpleasant
poor
What to Wear in Thermopolis in September
Warm but pleasant conditions in Thermopolis 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. Light rain is possible, so consider bringing a small umbrella or rain jacket.What To Do in Thermopolis 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 Thermopolis's climate page.
See the full Thermopolis climate overview or explore weather in the United States of America.
