June weather forecast
Roy, MT

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Weather in June

The first month of the summer, June, is an agreeable month in Roy, Montana, with temperature in the range of an average low of 47.8°F (8.8°C) and an average high of 68.5°F (20.3°C).

Temperature

The arrival of June sees a shift in the average high-temperature, moving from a moderate 58.5°F (14.7°C) in May to a pleasant 68.5°F (20.3°C). Roy's nighttime temperature in June falls to an average of 47.8°F (8.8°C).

Humidity

The average relative humidity in June is 62%.

Rainfall

In Roy, during June, the rain falls for 17 days and regularly aggregates up to 2.83" (72mm) of precipitation. Throughout the year, in Roy, there are 126.2 rainfall days, and 17.83" (453mm) of precipitation is accumulated.

Snowfall

January through June, September through December are months with snowfall. June is the last month it regularly snows in Roy. During 0.2 snowfall days, in June, Roy aggregates 0.04" (1mm) of snow. In Roy, during the entire year, snow falls for 83.4 days and aggregates up to 45.51" (1156mm) of snow.

Daylight

With an average of 15h and 54min of daylight, June has the longest days of the year in Roy.
On the first day of the month, sunrise is at 5:22 am and sunset at 9:04 pm. On the last day of June, in Roy, sunrise is at 5:23 am and sunset at 9:16 pm MDT.

Sunshine

The average sunshine in June in Roy is 11.1h.

UV index

In June, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the average person.
Note: The maximum daily UV index of 5 during June translates into the following directions:
Take measures. Individuals with light skin might experience burns in under 30 minutes. It's recommended to limit sun exposure when its radiation is at its peak during midday. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in June in Roy?

The high-temperature in Roy during June is 68.5°F (20.3°C) and the low-temperature is 47.8°F (8.8°C).

What is the average humidity in June in Roy?

The average relative humidity in June in Roy is 62%.

How many days does it rain in June in Roy?

In Roy, Montana, in June, during 17 rainfall days, 2.83" (72mm) of precipitation is typically accumulated.

What is the last month it snows in Roy?

June is the last month it regularly snows in Roy. During 0.2 snowfall days, in June, Roy aggregates 0.04" (1mm) of snow.

When are the longest days in Roy?

The month with the longest days in Roy, Montana, is June, with an average of 15h and 54min of daylight.

How many hours of daylight does Roy have in June?

In June, the average day length in Roy is 15h and 53min.

When is the sunrise / sunset in June in Roy?

On the first day of June in Roy, Montana, sunrise is at 5:22 am and sunset at 9:04 pm. On the last day of the month, sunrise is at 5:23 am and sunset at 9:16 pm MDT.

How many hours of sunshine does Roy have in June?

The average sunshine duration in June in Roy is 11.1h.

How high is the UV index in June in Roy?

In June, the average daily maximum UV index in Roy, Montana, is 5. A UV Index reading of 3 to 5 represents 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 June
Roy, MT

Average temperature in June - Roy, MT
  • Average high temperature in June: 68.5°F

The warmest month (with the highest average high temperature) is July (78.8°F).
The months with the lowest average high temperature are February and December (29.1°F).

  • Average low temperature in June: 47.8°F

The month with the highest average low temperature is August (54.5°F).
The coldest month (with the lowest average low temperature) is February (15.3°F).

Average pressure in June
Roy, MT

Average pressure in June - Roy, MT
  • Average pressure in June: 29.85"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

Average wind speed in June
Roy, MT

Average wind speed in June - Roy, MT
  • Average wind speed in June: 8.5mph

The windiest months (with the highest average wind speed) are January, April and October (9.9mph).
The calmest month (with the lowest average wind speed) is August (7.4mph).

Average humidity in June
Roy, MT

Average humidity in June - Roy, MT
  • Average humidity in June: 62%

The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is August (47%).

Average rainfall in June
Roy, MT

Average rainfall in June - Roy, MT
  • Average rainfall in June: 2.83"

The wettest month (with the highest rainfall) is May (3.39").
The driest month (with the least rainfall) is December (0.71").

Average rainfall days in June
Roy, MT

Average rainfall days in June - Roy, MT
  • Average rainfall days in June: 17 days

The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is January (5.4 days).

Average snowfall in June
Roy, MT

Average snowfall in June - Roy, MT
  • Average snowfall in June: 0.04"

The month with the highest snowfall is April (9.13").
The months with the least snowfall are July and August (0").

Average snowfall days in June
Roy, MT

Average snowfall days in June - Roy, MT
  • Average snowfall days in June: 0.2 days

The month with the highest number of snowfall days is February (15.2 days).
The months with the least snowfall days are July and August (0 days).

Average daylight in June /
Average sunshine in June
Roy, MT

Average daylight in June / Average sunshine in June - Roy, MT
  • Average daylight in June: 15h and 5min

The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).

  • Average sunshine in June: 11h 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: 5h and 30min).

Average sunshine days in June
Roy, MT

Average sunshine days in June - Roy, MT
  • Average sunshine days in June: 9.9 days

The month with the most sunshine days is September (19.3 days).
The month with the least sunshine days is April (8.3 days).

Average UV index in June
Roy, MT

Average UV index in June - Roy, MT
  • Average UV index in June: 5

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).

Average cloud cover in June
Roy, MT

Average cloud cover in June - Roy, MT
  • Average cloud cover in June: 27

The month with the most cloud cover is February (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 16).

Average visibility in June
Roy, MT

Average visibility in June - Roy, MT
  • Average visibility in June: 6mi

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

Roy, Montana, USA

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