Great Falls weather in May (Montana, United States of America)

What weather conditions can you expect in Great Falls this May? Wondering about the weather this month? Our guide has all the details you need.

Temperatures

In May, Great Falls usually has moderate temperatures and moderate rainfall. During the day, temperatures can climb to about 18°C. At night, they may fall to a cooler 4°C.

Precipitation

Great Falls in May usually receives moderate rainfall, averaging around 67 mm for the month. The month brings the most rain, so be prepared with an umbrella for the occasional shower. When we look at the climate data from the last 30 years, you can expect around 12 days of rain.

Average sunshine

There are approximately 289 hours of sunshine this month, meaning plenty of sunny days and a vibrant atmosphere.

If you prefer dry days with pleasant temperatures, June, July, August and September typically offer the best circumstances. While January, February and December tend to showcase less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Great Falls climate page with graphs.

 

Great Falls, monthly averages in May

Min Temperature 4°C  

Max Temperature 18°C  

Chance of Rain 41%  

Precipitation 67 mm  

Rainy days 12 days  

Humidity 45%  

Windspeed 14 km/h  

Sunshine 289 hours  

Percentage Sunshine  

Where to go 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.

Weather conditions Weather

Temperatures

Precipitation

Map not visible? Whoops sorry! Please refresh the page.

Legend perfect weather pleasant tolerable unpleasant poor

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

So, what should you wear in this month?

For visitors traveling to Great Falls, we recommend wearing layers. So maybe a skirt, t-shirt, shorts for during the day and jeans and a warm jacket for some days and evenings. Bring a rain jacket in case it rains during your stay. Plan on layering your clothes.

What To Do

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

Cycling

6/10

Walking

6/10

Camping

4/10

Outdoor sports

10/10

Interested in more climate information?

This site provides you with all the information you need about the climate in Great Falls.

Our site offers climate and forecast data for every country in the world. Are you going to the United States of America? On this website you can find historical weather averages for many cities in the United States of America. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.