Sundance (WY) Weather & Climate: Best Time to Visit

Average temperatures, rainfall, sunshine and the best time to visit Sundance.

Full Climate overview Temperature Rainfall
Current conditions Sundance –  

Climate overview of Sundance

Temperatures in Sundance, Wyoming, United States of America, vary greatly throughout the year. July is the hottest month at 29°C (84°F), while December is the coldest at 1°C (34°F).

The city receives around 540 mm (21 in) of rain/snowfall per year. It experiences a distinct dry season from November to March, with warm summers and very cold winters. May is the wettest month and December the driest.

Sundance Weather by Month

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

Monthly Temperature in Sundance

The climate in Sundance is known for significant temperature differences throughout the year, making the weather dynamic. On average, daytime temperatures range from a comfortable 29°C (84°F) in July to a very cold 1°C (34°F) in December.

Nighttime temperatures range from 13°C (55°F) in July to -11°C (12°F) in December.

Check out our detailed temperature page for more information.

Temperature ranges by month

Rainfall in Sundance

Generally, Sundance receives mid-range precipitation levels, with 540 mm (21 in) annually. The seasons in Sundance bring significant changes in precipitation. The wettest month, May, receives high rainfall, with an average of 103 mm (4.1 in) of precipitation. This rainfall is distributed across 16 rainy days.

In contrast, the driest month, December, experiences much less snowfall, totaling 23 mm (0.9 in) over 11 snowy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Sundance Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

Best Time to Visit Sundance

The most comfortable overall weather for exploring Sundance is usually found in June, July, August and September. Conditions are generally least comfortable in January, February and December.

Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.

  • Best overall: June, July, August and September
  • Warmest weather: July and August
  • Fewer rainy days: March, August, September, October and November
  • Wettest months: April, May, June, July and August, when rainfall is highest.
  • Seasonal pattern: A distinct dry season from November to March, with warm summers and very cold winters
  • Coldest conditions: December, with freezing nights around -11°C (12°F).

Frequently asked questions about the climate in Sundance

What is the best time to visit Sundance?

June, July, August and September typically offer the most optimal weather in Sundance. In contrast, January, February and December tend to have less optimal conditions. Sundance has a distinct dry season from November to March, with warm summers and very cold winters.

What temperatures can I expect in Sundance?

Daytime highs range from 1°C (34°F) in December to 29°C (84°F) in July. Nighttime lows range from -11°C (12°F) to 13°C (55°F). Temperatures vary considerably through the year.

How much rain does Sundance get?

Annual rainfall is around 540 mm (21 in). May is the wettest month with 103 mm (4.1 in), while December is the driest with 23 mm (0.9 in).

Sundance 3-Day Forecast

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