June weather forecast and climate
Lewistown, MT

Weather in June

The first month of the summer, June, is a pleasant month in Lewistown, Montana, with average temperature fluctuating between 68.5°F (20.3°C) and 47.8°F (8.8°C).

Temperature

In Lewistown, the average high-temperature in June increases, from a mild 58.5°F (14.7°C) in May, to a pleasant 68.5°F (20.3°C). In Lewistown, the average low-temperature is 47.8°F (8.8°C).

Humidity

In Lewistown, the average relative humidity is 62%.

Rainfall

In Lewistown, in June, it is raining for 17 days, with typically 2.83" (72mm) of accumulated precipitation. Throughout the year, in Lewistown, there are 126.2 rainfall days, and 17.83" (453mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through June, September through December. June is the last month it regularly snows in Lewistown. During 0.2 snowfall days, Lewistown aggregates 0.04" (1mm) of snow. Throughout the year, in Lewistown, there are 83.4 snowfall days, and 45.51" (1156mm) of snow is accumulated.

Daylight

June has the longest days of the year in Lewistown, with an average of 15.8h of daylight.

Sunshine

The average sunshine in June is 11.1h.

UV index

The average daily maximum UV index in June is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from the exposure to the Sun's UV radiation for the average person.
Note: In June, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against the skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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 June in Lewistown?

In June, the average relative humidity is 62%.

How much does it rain in Lewistown in June?

In Lewistown, in June, it is raining for 17 days, with typically 2.83" (72mm) of accumulated precipitation.

What is the last month it snows in Lewistown?

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

When are the longest days in Lewistown?

The month with the longest days is June, with an average of 15.8h of daylight.

What is the average length of the day in June in Lewistown?

In June, the average length of the day in Lewistown is 15.8h.

How long on average sun shines in June in Lewistown?

The average sunshine in June is 11.1h.

How high is the UV index in June in Lewistown?

In June, the average daily maximum UV index in Lewistown is 5. A UV Index value of 3 to 5 symbolizes a medium hazard to health from the exposure to the Sun's UV rays.

Average temperature in June
Lewistown, MT

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

The warmest month (with the highest average high temperature) is July (78.8°F).
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).

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Average pressure in June
Lewistown, MT

Average pressure in June - Lewistown, MT
  • Average pressure in June: 29.85"

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

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Average wind speed in June
Lewistown, MT

Average wind speed in June - Lewistown, 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).

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Average humidity in June
Lewistown, MT

Average humidity in June - Lewistown, 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%).

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Average rainfall in June
Lewistown, MT

Average rainfall in June - Lewistown, 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").

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Average rainfall days in June
Lewistown, MT

Average rainfall days in June - Lewistown, 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).

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Average snowfall in June
Lewistown, MT

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

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

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Average snowfall days in June
Lewistown, MT

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

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

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

Average daylight in June / Average sunshine in June - Lewistown, MT
  • Average daylight in June: 15.8h

The month with the longest days is June (Average daylight: 15.8h).
The month with the shortest days is December (Average daylight: 8.6h).

  • Average sunshine in June: 11.1h

The month with the most sunshine is July (Average sunshine: 11.8h).
The month with the least sunshine is February (Average sunshine: 5.5h).

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Average sunshine days in June
Lewistown, MT

Average sunshine days in June - Lewistown, 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).

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Average UV index in June
Lewistown, MT

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

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

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Average cloud cover in June
Lewistown, MT

Average cloud cover in June - Lewistown, 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).

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Average visibility in June
Lewistown, MT

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

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

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