May weather forecast
Ennis, MT

Weather in May

The last month of the spring, May, is a cool month in Ennis, Montana, with average temperature varying between 52.3°F (11.3°C) and 31.5°F (-0.3°C).

Temperature

In Ennis, the average high-temperature increases, from a wintry 40.3°F (4.6°C) in April, to a cool 52.3°F (11.3°C). The average low-temperature, in Ennis, Montana, is 31.5°F (-0.3°C).

Humidity

In Ennis, the average relative humidity in May is 73%.

Rainfall

The month with the most rainfall is May when the rain falls for 14.4 days and typically aggregates up to 2.36" (60mm) of precipitation.

Snowfall

Months with snowfall in Ennis are January through December. In May, it is snowing for 12.8 days. Throughout May, 9.21" (234mm) of snow is accumulated. Throughout the year, there are 136.1 snowfall days, and 86.93" (2208mm) of snow is accumulated.

Daylight

In May, the average length of the day in Ennis is 14.9h.

Sunshine

In Ennis, Montana, the average sunshine in May is 9.5h.

UV index

In Ennis, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from the exposure to the Sun's UV radiation for average individuals.
Note: In May, the average maximum UV index of 3 translate into the following recommendations:
Take precautions - Protection against the skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the average humidity in May in Ennis?

In Ennis, the average relative humidity in May is 73%.

What is the rainiest month in Ennis?

The month with the most rainfall in Ennis is May when the rain falls for 14.4 days and typically aggregates up to 2.36" (60mm) of precipitation.

How many days does it rain in May in Ennis?

In Ennis, during May, the rain falls for 14.4 days and regularly aggregates up to 2.36" (60mm) of precipitation.

How much does it snow in Ennis in May?

In Ennis, in May, during 12.8 snowfall days, 9.21" (234mm) of snow is typically accumulated.

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

In Ennis, the average length of the day in May is 14.9h.

How many hours of sunshine does Ennis have in May?

The average sunshine in May is 9.5h.

What is the UV index reading in May in Ennis?

In Ennis, the average daily maximum UV index in May is 3. A UV Index of 3 to 5 symbolizes a moderate health threat from the exposure to the Sun's UV rays.

Average temperature in May
Ennis, MT

Average temperature in May - Ennis, MT
  • Average high temperature in May: 52.3°F

The warmest month (with the highest average high temperature) is July (74.5°F).
The month with the lowest average high temperature is December (22.3°F).

  • Average low temperature in May: 31.5°F

The month with the highest average low temperature is August (46°F).
The coldest month (with the lowest average low temperature) is December (7.7°F).

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Average pressure in May
Ennis, MT

Average pressure in May - Ennis, MT
  • Average pressure in May: 29.94"

The month with the highest atmospheric pressure is January (30.22").
The month with the lowest atmospheric pressure is June (29.91").

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Average wind speed in May
Ennis, MT

Average wind speed in May - Ennis, MT
  • Average wind speed in May: 5.2mph

The windiest month (with the highest average wind speed) is January (7.1mph).
The calmest month (with the lowest average wind speed) is August (5mph).

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Average humidity in May
Ennis, MT

Average humidity in May - Ennis, MT
  • Average humidity in May: 73%

The month with the highest relative humidity is February (90%).
The month with the lowest relative humidity is August (50%).

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Average rainfall in May
Ennis, MT

Average rainfall in May - Ennis, MT
  • Average rainfall in May: 2.36"

The wettest month (with the highest rainfall) is May (2.36").
The driest month (with the least rainfall) is December (0.75").

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Average rainfall days in May
Ennis, MT

Average rainfall days in May - Ennis, MT
  • Average rainfall days in May: 14.4 days

The month with the highest number of rainy days is June (16.5 days).
The month with the least rainy days is November (2.9 days).

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Average snowfall in May
Ennis, MT

Average snowfall in May - Ennis, MT
  • Average snowfall in May: 9.21"

The month with the highest snowfall is April (14.76").
The month with the least snowfall is August (0.08").

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Average snowfall days in May
Ennis, MT

Average snowfall days in May - Ennis, MT
  • Average snowfall days in May: 12.8 days

The month with the highest number of snowfall days is April (19.9 days).
The month with the least snowfall days is August (0.3 days).

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

Average daylight in May / Average sunshine in May - Ennis, MT
  • Average daylight in May: 14.9h

The month with the longest days is June (Average daylight: 15.6h).
The month with the shortest days is December (Average daylight: 8.8h).

  • Average sunshine in May: 9.5h

The month with the most sunshine is July (Average sunshine: 11.6h).
The month with the least sunshine is January (Average sunshine: 4.7h).

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Average sunshine days in May
Ennis, MT

Average sunshine days in May - Ennis, MT
  • Average sunshine days in May: 7.1 days

The month with the most sunshine days is January (16.3 days).
The month with the least sunshine days is April (6.9 days).

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Average UV index in May
Ennis, MT

Average UV index in May - Ennis, MT
  • Average UV index in May: 3

The month with the highest UV index is July (UV index 5).
Months with the lowest UV index are January and February (UV index 1).

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Average cloud cover in May
Ennis, MT

Average cloud cover in May - Ennis, MT
  • Average cloud cover in May: 39

The month with the most cloud cover is February (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 17).

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Average visibility in May
Ennis, MT

Average visibility in May - Ennis, MT
  • Average visibility in May: 5mi

Months with the highest visibility are June, July, August, September and October (6mi).
Months with the lowest visibility are January, February and December (4mi).

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