Weather in Helena (Montana) in may 2025

The weather in Helena (Montana) in the month of may comes from statistical datas on the past years. You can view the weather statistics for the whole month, but also navigating through the tabs for the beginning, the middle and the end of the month.

Average weather throughout may

very bad weather 166.6cm

Weather at 6am
36°F

Partly Cloudy

24%

Fog

11%

Moderate rain at times

11%

Weather at 12pm
56°F

Partly Cloudy

27%

Moderate rain at times

12%

Moderate or heavy rain in area with thunder

9%

Weather at 6pm
59°F

Moderate rain at times

23%

Partly Cloudy

19%

Moderate or heavy rain in area with thunder

12%

Weather at 3am
43°F

Clear/Sunny

41%

Partly Cloudy

21%

Moderate rain at times

12%

Snow showers

9%



Evolution of daily average temperature and precipitation in Helena (Montana) in may

These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Helena (Montana) in may.


The climate of Helena (Montana) in may is very bad

In may in Helena (Montana), the climate is wet (with 4.1in of precipitation over 6 days). The weather is worst than the previous month since in april there is an average of 3.4in of rainfall over 6 days.

The climate is relatively cool in that locality this month, but it is tolerable by dressing cosy. The high seasonal norm is 61°F. In the morning the temperature drops to 36°F. Thus, the mean temperature average on this month of may in Helena (Montana) is 49°F. Note that seasonal normals in contrast with those observed in Helena (Montana) in may with a maximum record of 83°F in 2009 and a minimum record of 9°F in 2009. You need to prepare to have about 12 days with temperatures down below 32°F, or 39% of the month.

On this month of may, day length in Helena (Montana) is generally 15:02. Sunrise is at 04:54 and sunset is at 19:56.



May: another location in the United States (USA)?

If you want to go to the United States (USA) in may, there are destinations with better weather than Helena (Montana):

In may, California, Hawaii (Honolulu), Las Vegas, Phoenix (Arizona), Amarillo (Texas) and Big Bend National Park (Texas) have perfect weather.

Furthermore, Louisiana, Washington D. C., Atlanta, Boston, Chicago and Dallas have good weather.

Finally, Salt Lake City, Denver, Long Beach (Washington), Santa Fe (New Mexico), Boise (Idaho) and Bryce Canyon have a tolerable climate, but better than Helena (Montana).

more information about United States's weather in may


Seasonal average climate and temperature of Helena (Montana) in may

Check below seasonal norms These datas are set from the weather statements of the last years of may.

May
Outside temperature
Average temperature 49°F
Highest temperature 61°F
Lowest temperature 36°F
Highest record temperature 83°F
(2009)
Lowest record temperature 9°F
(2009)
Number of days at +86°F 0 day(s)
(0%)
Number of days at +65°F 11 day(s)
(35%)
Number of days at -32°F 12 day(s)
(39%)
Wind
Wind speed 14km/h
Wind temperature 32°F
Precipitation (rainfall)
Rainfall 4.1in
Number of days with rainfall 6 day(s)
(19%)
Record daily rainfall 1.9in
(2021)
Snowfall 166.6cm
Other climate data
Humidity 83%
Visibility 9.03km
Cloud cover 33%
UV index 4
Daily sunshine hours 14
Sunrise and sunset
Time of sunrise 04:54
Time of sunset 19:56
Length of day 15:02
Our opinion about the weather in may
Our opinion at whereandwhen.net very bad



How was the weather last may?

Here is the day by day recorded weather in Helena (Montana) in may 2024:

01-05-2024
Blowing snow
25°F to 41°F
02-05-2024
Moderate or heavy snow showers
31°F to 38°F
03-05-2024
Patchy rain nearby
25°F to 50°F
04-05-2024
Partly Cloudy
31°F to 58°F
05-05-2024
Cloudy
40°F to 59°F
06-05-2024
Patchy rain nearby
38°F to 45°F
07-05-2024
Blizzard
32°F to 34°F
08-05-2024
Heavy snow
32°F to 36°F
09-05-2024
Mist
34°F to 47°F
10-05-2024
Clear/Sunny
32°F to 59°F
11-05-2024
Clear/Sunny
41°F to 67°F
12-05-2024
Clear/Sunny
47°F to 70°F
13-05-2024
Clear/Sunny
47°F to 65°F
14-05-2024
Light rain shower
43°F to 56°F
15-05-2024
Partly Cloudy
41°F to 65°F
16-05-2024
Clear/Sunny
45°F to 68°F
17-05-2024
Patchy rain nearby
45°F to 50°F
18-05-2024
Clear/Sunny
32°F to 56°F
19-05-2024
Light rain shower
36°F to 47°F
20-05-2024
Patchy light rain in area with thunder
31°F to 52°F
21-05-2024
Patchy rain nearby
34°F to 56°F
22-05-2024
Light drizzle
41°F to 43°F
23-05-2024
Patchy rain nearby
31°F to 45°F
24-05-2024
Clear/Sunny
32°F to 56°F
25-05-2024
Patchy light drizzle
38°F to 52°F
26-05-2024
Patchy rain nearby
38°F to 54°F
27-05-2024
Clear/Sunny
38°F to 65°F
28-05-2024
Clear/Sunny
47°F to 72°F
29-05-2024
Partly Cloudy
47°F to 54°F
30-05-2024
Clear/Sunny
34°F to 54°F
31-05-2024
Clear/Sunny
34°F to 61°F

Map: other cities in the United States (USA) in may

Cities near Helena (Montana):

Montana in mayvery bad weather
Yellowstone National Park in mayvery bad weather
Glacier National Park (Montana) in mayvery bad weather
Cody (Wyoming) in mayvery bad weather
Grand Teton National Park (Wyoming) in mayvery bad weather
Jackson Hole in mayvery bad weather
Boise (Idaho) in maytolerable weather
Wyoming in maytolerable weather
Salt Lake City in maytolerable weather
Mount Rushmore in maytolerable weather
Mount Rainier National Park (Washington) in mayvery bad weather
Seattle in maygood weather
United States in may: See full list of cities

Click over cities on the map for information about the weather in may.

Legend: Helena (Montana) perfect weather good tolerable bad very bad


Weather data for Helena (Montana) in may:

Weather data for Helena (Montana) for may are derived from an average of the weather forecast since 2009 in Helena (Montana). There is a margin of error and these forecasts are to be considered as general information only. The weather in Helena (Montana) can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Helena (Montana).


Weather in april in Helena (Montana)
Weather in june in Helena (Montana)
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