May weather forecast
Rollins, MT

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Weather in May

May, the last month of the spring in Rollins, is a moderate month, with an average temperature ranging between min 37°F (2.8°C) and max 58.8°F (14.9°C).

Temperature

In Rollins, the average high-temperature in May rises, from a frosty 47.3°F (8.5°C) in April, to a refreshing 58.8°F (14.9°C). Rollins reports a considerable drop from daytime temperatures in May, recording an average nighttime figure of 37°F (2.8°C).

Humidity

In May, the average relative humidity is 68%.

Rainfall

In Rollins, during May, the rain falls for 15.3 days and regularly aggregates up to 1.77" (45mm) of precipitation. Throughout the year, in Rollins, Montana, there are 153.5 rainfall days, and 19.76" (502mm) of precipitation is accumulated.

Snowfall

January through May, September through December are months with snowfall in Rollins. May is the last month it regularly snows. During 0.8 snowfall days, in May, Rollins aggregates 0.2" (5mm) of snow. In Rollins, during the entire year, snow falls for 94.5 days and aggregates up to 52.6" (1336mm) of snow.

Daylight

The average length of the day in May is 15h and 11min.
On the first day of May in Rollins, Montana, sunrise is at 6:17 am and sunset at 8:50 pm. On the last day of the month, sunrise is at 5:41 am and sunset at 9:27 pm MDT.

Sunshine

The average sunshine in May in Rollins, Montana, is 10.3h.

UV index

In Rollins, the average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: A maximum UV index of 4 in May translates into the following recommendations:
Undertake protective steps - Preventing sun damage is advised. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
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Frequently asked questions

What is the temperature in May in Rollins?

The high-temperature during May is 58.8°F (14.9°C) and the low-temperature is 37°F (2.8°C).

What is the average humidity in May in Rollins?

In Rollins, Montana, the average relative humidity in May is 68%.

How many days does it rain in May in Rollins?

In Rollins, in May, during 15.3 rainfall days, 1.77" (45mm) of precipitation is typically accumulated.

What is the last month it snows in Rollins?

May is the last month it regularly snows in Rollins. During 0.8 snowfall days, in May, Rollins aggregates 0.2" (5mm) of snow.

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

In Rollins, Montana, the average day length in May is 15h and 11min.

When is the sunrise / sunset in May in Rollins?

On the first day of May in Rollins, Montana, sunrise is at 6:17 am and sunset at 8:50 pm. On the last day of the month, sunrise is at 5:41 am and sunset at 9:27 pm MDT.

How many hours of sunshine does Rollins have in May?

In May, the average sunshine duration in Rollins, Montana, is 10.3h.

What is the UV index intensity in May in Rollins?

In Rollins, Montana, the average daily maximum UV index in May is 4. A UV Index estimate of 3 to 5 represents a medium health risk from exposure to the Sun's UV radiation.
Average max. wind speed
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Rollins, MT

Average temperature in May - Rollins, MT
  • Average high temperature in May: 58.8°F

The warmest month (with the highest average high temperature) is July (76.6°F).
The month with the lowest average high temperature is December (27.5°F).

  • Average low temperature in May: 37°F

The month with the highest average low temperature is July (48.7°F).
The coldest month (with the lowest average low temperature) is December (16.7°F).

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Average pressure in May
Rollins, MT

Average pressure in May - Rollins, MT
  • Average pressure in May: 29.96"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in May
Rollins, MT

Average wind speed in May - Rollins, MT
  • Average wind speed in May: 4.5mph

The windiest month (with the highest average wind speed) is April (4.9mph).
The calmest month (with the lowest average wind speed) is August (3.8mph).

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Average humidity in May
Rollins, MT

Average humidity in May - Rollins, MT
  • Average humidity in May: 68%

The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is August (53%).

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Average rainfall in May
Rollins, MT

Average rainfall in May - Rollins, MT
  • Average rainfall in May: 1.77"

The wettest month (with the highest rainfall) is June (2.36").
The driest months (with the least rainfall) are July and August (0.63").

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Average rainfall days in May
Rollins, MT

Average rainfall days in May - Rollins, MT
  • Average rainfall days in May: 15.3 days

The month with the highest number of rainy days is April (18.8 days).
The month with the least rainy days is August (7.2 days).

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Average snowfall in May
Rollins, MT

Average snowfall in May - Rollins, MT
  • Average snowfall in May: 0.2"

The month with the highest snowfall is December (12.32").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in May
Rollins, MT

Average snowfall days in May - Rollins, MT
  • Average snowfall days in May: 0.8 days

The month with the highest number of snowfall days is December (20.1 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
Rollins, MT

Average daylight in May / Average sunshine in May - Rollins, 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 30min).

  • Average sunshine in May: 10h and 2min

The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

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Average sunshine days in May
Rollins, MT

Average sunshine days in May - Rollins, MT
  • Average sunshine days in May: 12.6 days

The month with the most sunshine days is July (20.2 days).
The months with the least sunshine days are February and March (7.8 days).

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Average UV index in May
Rollins, MT

Average UV index in May - Rollins, MT
  • Average UV index in May: 4

The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).

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Average cloud cover in May
Rollins, MT

Average cloud cover in May - Rollins, MT
  • Average cloud cover in May: 34

The month with the most cloud cover is January (Cloud cover 59).
The months with the least cloud cover are July and August (Cloud cover 15).

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Average visibility in May
Rollins, MT

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

The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March and December (4mi).

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Rollins, Montana, USA

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