Thermopolis
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Thermopolis Weather in May

May in Thermopolis averages 21°C (70°F) during the day and 5°C (41°F) at night. It is the wettest month of the year, with 77 mm (3 in) of rainfall on average, so waterproof gear is a must.

Rainfall in Thermopolis in May

As the rainiest month, carrying an umbrella is advisable to manage the frequent rain. Analyzing past climate data, one can expect approximately 12 days of rain, averaging 77 mm (3 in). Rain this month is fairly typical, a standard mix of wet and dry days with no particularly heavy or persistent showers.

Temperature in Thermopolis in May

May is one of the better months to visit Thermopolis. Expect 21°C (70°F) during the day and 5°C (41°F) at night. A light jacket or extra layer can be useful, especially outside the warmest hours of the day. With overnight lows of 5°C (41°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.

If you're inclined towards comfortable temperatures and drier conditions, May is a good time to visit Thermopolis.

Thermopolis Temperature in May

Min Temperature
5°C (41°F)
Max Temperature
21°C (70°F)
Chance of Rain
40%
Precipitation
77 mm (3 in)
Rainy days
12 days

Thermopolis Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in Thermopolis - and find the best time to visit.

Best Places in the United States of America in May

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 May →

perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

What to Wear in Thermopolis in May

Pleasant temperatures in May mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Rain gear is recommended, you can expect wet weather on multiple days.

What To Do in Thermopolis in May

We rated the following activities from 1 (least suitable) to 10 (best) to do.

  • Cycling
    9/10
  • Walking
    9/10
  • Camping
    4/10
  • Outdoor sports
    9/10

Thermopolis 3-Day Forecast

More climate data for Thermopolis

Popular in May

Where to go in May - average daytime high across popular destinations.

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.