June weather forecastGreat Falls, MT

June
Weather in June
The month of June manifests the onset of the warm summer season with long sunny days. Extending sunshine hours to approximately 15.9 hours marks the apex, standing out as the month with the most daylight in Great Falls. With the approach of July, residents can anticipate the persistence of warm weather coupled with a gradual fall in humidity. This is a prime time to explore parks and natural reserves, making the most of these long, sunny days.Temperature
As Great Falls transitions into June, a rise in the average high-temperature is observed, moving from an enjoyable 63°F (17.2°C) in May to an agreeable 72.1°F (22.3°C). Great Falls's nighttime average of 49.5°F (9.7°C) during June reflects a substantial decrease from the daytime temperature.Humidity
The average relative humidity in June is 57%.Rainfall
June is the month with the most rainfall. Rain falls for 8.6 days and accumulates 0.87" (22mm) of precipitation.Snowfall
June through August are months without snowfall.Daylight
June has the longest days of the year, with an average of 15h and 54min of daylight.On the first day of the month, sunrise is at 5:31 am and sunset at 9:14 pm. On the last day of June, sunrise is at 5:31 am and sunset at 9:26 pm MDT.
Sunshine
In Great Falls, the average sunshine in June is 11.3h.UV index
In Great Falls, the average daily maximum UV index in June is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: The maximum UV index, 5 during June, leads to the following recommendations:
Undertake protective steps - Recommendations to avoid sunburn are issued. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in June
Great Falls, MT
- Average high temperature in June: 72.1°F
The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is December (30°F).
- Average low temperature in June: 49.5°F
The month with the highest average low temperature is August (57.7°F).
The coldest months (with the lowest average low temperature) are February and December (18.3°F).
Average pressure in June
Great Falls, MT
- Average pressure in June: 29.87"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in June
Great Falls, MT
- Average wind speed in June: 8.6mph
The windiest month (with the highest average wind speed) is November (11.4mph).
The calmest month (with the lowest average wind speed) is August (7.7mph).
Average humidity in June
Great Falls, MT
- Average humidity in June: 57%
The month with the highest relative humidity is January (77%).
The month with the lowest relative humidity is August (40%).
Average rainfall in June
Great Falls, MT
- Average rainfall in June: 0.87"
The wettest month (with the highest rainfall) is June (0.87").
The driest month (with the least rainfall) is December (0.16").
Average rainfall days in June
Great Falls, MT
- Average rainfall days in June: 8.6 days
The month with the highest number of rainy days is April (9.9 days).
The month with the least rainy days is December (2.7 days).
Average snowfall in June
Great Falls, MT
- Average snowfall in June: 0"
The month with the highest snowfall is February (2.09").
The months with the least snowfall are June, July and August (0").
Average snowfall days in June
Great Falls, MT
- Average snowfall days in June: 0 days
The month with the highest number of snowfall days is February (10 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in June /
Average sunshine in June
Great Falls, MT
- Average daylight in June: 15h and 54min
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 18min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 30min).
Average sunshine days in June
Great Falls, MT
- Average sunshine days in June: 19.9 days
The month with the most sunshine days is July (26.1 days).
The months with the least sunshine days are February and April (16.2 days).
Average UV index in June
Great Falls, 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, October, November and December (UV index 2).
Average cloud cover in June
Great Falls, MT
- Average cloud cover in June: 25
The month with the most cloud cover is February (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 13).
Average visibility in June
Great Falls, 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).





