May weather forecast
Wagner, MT

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Weather in May

The last month of the spring, May, is a comfortable month in Wagner, Montana, with temperature in the range of an average low of 46.4°F (8°C) and an average high of 64.9°F (18.3°C).

Temperature

In Wagner, stepping into May brings a temperature increase, moving up from April's cool 52.9°F (11.6°C) to an enjoyable 64.9°F (18.3°C). Wagner's nighttime temperature during May is consistently averaged at a chilly 46.4°F (8°C).

Humidity

In Wagner, the average relative humidity in May is 53%.

Rainfall

The wettest months are May and June, with an average 1.89" (48mm) of rainfall.

Snowfall

January through May, September through December are months with snowfall. May is the last month it regularly snows. During 0.3 snowfall days, in May, Wagner aggregates 0.28" (7mm) of snow. Throughout the year, there are 59.6 snowfall days, and 20.28" (515mm) of snow is accumulated.

Daylight

The average length of the day in May is 15h and 15min.
On the first day of May, sunrise is at 5:51 am and sunset at 8:27 pm. On the last day of the month, sunrise is at 5:15 am and sunset at 9:04 pm MDT.

Sunshine

In May, the average sunshine is 10.2h.

UV index

In May, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the average person.
Note: A daily high UV index of 5 in May leads to these guidelines:
Take necessary precautions - Defending against sun damage is advocated. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
Updated: Jun 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average May temperature in Wagner?

The high-temperature, in May, in Wagner, is 64.9°F (18.3°C), while the low-temperature averages to 46.4°F (8°C).

What is the average humidity in May?

In May, the average relative humidity is 53%.

What is the rainiest month?

The months with the most rainfall are May and June, with an average 1.89" (48mm) of precipitation.

How many days does it rain in May?

In Wagner, in May, during 14.1 rainfall days, 1.89" (48mm) of precipitation is typically accumulated.

What is the last month it snows?

May is the last month it regularly snows. During 0.3 snowfall days, in May, Wagner aggregates 0.28" (7mm) of snow.

What is the average length of the day in May?

In May, the average day length is 15h and 15min.

What time are sunrise and sunset in May?

On the first day of May, sunrise is at 5:51 am and sunset at 8:27 pm. On the last day of the month, sunrise is at 5:15 am and sunset at 9:04 pm MDT.

How long on average sun shines in May?

In Wagner, Montana, the average sunshine duration in May is 10.2h.

How high is the UV index in May?

In May, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Wagner, MT

Average temperature in May - Wagner, MT
  • Average high temperature in May: 64.9°F

The warmest month (with the highest average high temperature) is July (83.5°F).
The months with the lowest average high temperature are January and February (25.7°F).

  • Average low temperature in May: 46.4°F

The month with the highest average low temperature is July (62.4°F).
The coldest month (with the lowest average low temperature) is January (11.8°F).

Average pressure in May
Wagner, MT

Average pressure in May - Wagner, MT
  • Average pressure in May: 29.92"Hg

The month with the highest atmospheric pressure is February (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).

Average wind speed in May
Wagner, MT

Average wind speed in May - Wagner, MT
  • Average wind speed in May: 10.5mph

The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest month (with the lowest average wind speed) is February (8.8mph).

Average humidity in May
Wagner, MT

Average humidity in May - Wagner, MT
  • Average humidity in May: 53%

The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is August (41%).

Average rainfall in May
Wagner, MT

Average rainfall in May - Wagner, MT
  • Average rainfall in May: 1.89"

The wettest months (with the highest rainfall) are May and June (1.89").
The driest months (with the least rainfall) are February and December (0.55").

Average rainfall days in May
Wagner, MT

Average rainfall days in May - Wagner, MT
  • Average rainfall days in May: 14.1 days

The month with the highest number of rainy days is May (14.1 days).
The month with the least rainy days is December (4 days).

Average snowfall in May
Wagner, MT

Average snowfall in May - Wagner, MT
  • Average snowfall in May: 0.28"

The month with the highest snowfall is December (3.9").
The months with the least snowfall are June, July and August (0").

Average snowfall days in May
Wagner, MT

Average snowfall days in May - Wagner, MT
  • Average snowfall days in May: 0.3 days

The month with the highest number of snowfall days is December (12.7 days).
The months with the least snowfall days are June, July and August (0 days).

Average daylight in May /
Average sunshine in May
Wagner, MT

Average daylight in May / Average sunshine in May - Wagner, MT
  • Average daylight in May: 15h and 1min

The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).

  • Average sunshine in May: 10h and 1min

The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

Average sunshine days in May
Wagner, MT

Average sunshine days in May - Wagner, MT
  • Average sunshine days in May: 14.8 days

The month with the most sunshine days is September (19.8 days).
The month with the least sunshine days is April (13.4 days).

Average UV index in May
Wagner, MT

Average UV index in May - Wagner, MT
  • Average UV index in May: 5

The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 1).

Average cloud cover in May
Wagner, MT

Average cloud cover in May - Wagner, MT
  • Average cloud cover in May: 32

The month with the most cloud cover is February (Cloud cover 49).
The months with the least cloud cover are July and August (Cloud cover 17).

Average visibility in May
Wagner, MT

Average visibility in May - Wagner, MT
  • Average visibility in May: 6mi

The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).

Wagner, Montana, USA

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