Helena weather in May (Montana, United States of America)

Wondering what the weather is like in Helena during May? Is now the perfect time to visit? Find all the weather insights for this month on this page.

Temperatures

The typical weather for May in Helena includes moderate temperatures and moderate rainfall. Expect daytime highs to reach approximately 17°C, with nighttime lows dipping to around 4°C.

Precipitation

Helena in May usually receives moderate rainfall, averaging around 59 mm for the month. With this being the wettest month, keeping an umbrella on hand might save you from getting wet from a sudden shower. You can typically expect 15 days days of rain this month, based on climate records.

Average sunshine

With approximately 282 hours hours of sun, the days are filled with brightness. It makes it a perfect month for outdoor activities.

Should you favor a climate that's both dry and comfortably warm June, July, August and September typically offer the most agreeable circumstances. On the other hand, January, February and December tend to be characterized by conditions that may not be as optimal.

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

 

Helena, monthly averages in May

Min Temperature 4°C  

Max Temperature 17°C  

Chance of Rain 49%  

Precipitation 59 mm  

Rainy days 15 days  

Humidity 53%  

Sunshine 282 hours  

Percentage Sunshine 61%  

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

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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 Helena, 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 Helena.

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.