May weather forecast
Valleytown, MT

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Weather in May

The last month of the spring, May, is a comfortable month in Valleytown, Montana, with temperature in the range of an average low of 46.9°F (8.3°C) and an average high of 65.8°F (18.8°C).

Temperature

With the onset of May, Valleytown experiences a temperature shift, with the average high-temperature moving from a fresh 53.1°F (11.7°C) in April to an enjoyable 65.8°F (18.8°C). The nighttime temperature dips to a frosty 46.9°F (8.3°C) on average during May.

Humidity

The average relative humidity in May is 52%.

Rainfall

The month with the most rainfall in Valleytown is May, when the rain falls for 12.7 days and typically aggregates up to 1.73" (44mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Valleytown. May is the last month it regularly snows. During 0.3 snowfall days, in May, Valleytown aggregates 0.31" (8mm) of snow. In Valleytown, during the entire year, snow falls for 56.9 days and aggregates up to 17.95" (456mm) of snow.

Daylight

The average length of the day in May in Valleytown, Montana, is 15h and 17min.
On the first day of May, sunrise is at 5:47 am and sunset at 8:24 pm. On the last day of the month, sunrise is at 5:10 am and sunset at 9:02 pm MDT.

Sunshine

In May, the average sunshine in Valleytown is 10h.

UV index

The average daily maximum UV index in May in Valleytown is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: In May, a regular UV index of 5 translates into these guidelines:
Undertake precautions - It is suggested to shield oneself from sunburn. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
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Frequently asked questions

What are May temperatures in Valleytown?

During May, Valleytown experiences an average high-temperature of 65.8°F (18.8°C) and a low-temperature of 46.9°F (8.3°C).

What is the average humidity in May in Valleytown?

The average relative humidity in May in Valleytown, Montana, is 52%.

What is the wettest month in Valleytown?

May is the month with the most rainfall in Valleytown. Rain falls for 12.7 days and accumulates 1.73" (44mm) of precipitation.

How many days does it rain in May in Valleytown?

In Valleytown, Montana, during May, the rain falls for 12.7 days and regularly aggregates up to 1.73" (44mm) of precipitation.

What is the last month it snows in Valleytown?

May is the last month it regularly snows. During 0.3 snowfall days, in May, Valleytown aggregates 0.31" (8mm) of snow.

What is the average length of the day in May in Valleytown?

The average day length in May is 15h and 17min.

What time are sunrise and sunset in May in Valleytown?

In May, on the first day of the month, sunrise is at 5:47 am and sunset at 8:24 pm. On the last day of the month, in Valleytown, Montana, sunrise is at 5:10 am and sunset at 9:02 pm MDT.

How long on average sun shines in May in Valleytown?

In May, the average sunshine duration in Valleytown, Montana, is 10h.

How high is the UV index in May in Valleytown?

In May, the average daily maximum UV index in Valleytown, Montana, is 5. A UV Index of 3 to 5 symbolizes a moderate health threat from 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
Valleytown, MT

Average temperature in May - Valleytown, MT
  • Average high temperature in May: 65.8°F

The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is February (24.4°F).

  • Average low temperature in May: 46.9°F

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is February (10°F).

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Average pressure in May
Valleytown, MT

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

The month with the highest atmospheric pressure is February (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).

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Average wind speed in May
Valleytown, MT

Average wind speed in May - Valleytown, MT
  • Average wind speed in May: 10.6mph

The windiest month (with the highest average wind speed) is April (11.3mph).
The calmest month (with the lowest average wind speed) is February (8.3mph).

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Average humidity in May
Valleytown, MT

Average humidity in May - Valleytown, MT
  • Average humidity in May: 52%

The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (41%).

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Average rainfall in May
Valleytown, MT

Average rainfall in May - Valleytown, MT
  • Average rainfall in May: 1.73"

The wettest month (with the highest rainfall) is May (1.73").
The driest month (with the least rainfall) is February (0.43").

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Average rainfall days in May
Valleytown, MT

Average rainfall days in May - Valleytown, MT
  • Average rainfall days in May: 12.7 days

The month with the highest number of rainy days is May (12.7 days).
The month with the least rainy days is February (3.3 days).

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Average snowfall in May
Valleytown, MT

Average snowfall in May - Valleytown, MT
  • Average snowfall in May: 0.31"

The month with the highest snowfall is December (3.43").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Valleytown, MT

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

The month with the highest number of snowfall days is January (12.3 days).
The months with the least snowfall days are June, July and August (0 days).

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

Average daylight in May / Average sunshine in May - Valleytown, MT
  • Average daylight in May: 15h and 2min

The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).

  • Average sunshine in May: 10h and 0min

The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

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Average sunshine days in May
Valleytown, MT

Average sunshine days in May - Valleytown, MT
  • Average sunshine days in May: 16.3 days

The month with the most sunshine days is October (21 days).
The month with the least sunshine days is April (15.4 days).

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Average UV index in May
Valleytown, MT

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

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).

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Average cloud cover in May
Valleytown, MT

Average cloud cover in May - Valleytown, MT
  • Average cloud cover in May: 33

The month with the most cloud cover is February (Cloud cover 50).
The months with the least cloud cover are July and August (Cloud cover 18).

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Average visibility in May
Valleytown, MT

Average visibility in May - Valleytown, 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).

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Valleytown, Montana, USA

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