This report describes the typical weather at the Billings Logan International Airport (Billings, Montana, United States) weather station over the course of an average June. It is based on the historical records from 1974 to 2012. Earlier records are either unavailable or unreliable.
Billings, Montana has a humid continental climate with warm summers and no dry season. The area within 25 mi of this station is covered by grasslands (82%) and shrublands (14%).
The month of June is characterized by rapidly rising daily high temperatures, with daily highs increasing from 71°F to 83°F over the course of the month, exceeding 94°F or dropping below 58°F only one day in ten.
Over the course of June, the length of the day is essentially constant. The shortest day of the month is June 1 with 15:30 hours of daylight; the longest day is June 17 with 15:42 hours of daylight.
The earliest sunrise is at 5:23am on June 13; the latest sunset is at 9:09pm on June 28; the latest sunrise is at 5:28am on June 30; the earliest sunset is at 8:58pm on June 1.
Daylight savings time is observed in 2012 but it neither starts nor ends in June, so the entire month is in daylight time.
The median cloud cover ranges from 46% (partly cloudy) to 62% (partly cloudy). The trend is for the sky to be clearing rapidly with the median cloud cover decreasing by 15% from the start to the end of the month.
On June 30, the clearest day of the month, the sky is clear, mostly clear, or partly cloudy 66% of the time, and overcast or mostly cloudy 31% of the time.
On June 1, the cloudiest day of the month, the sky is overcast, mostly cloudy, or partly cloudy 64% of the time, and clear or mostly clear 34% of the time.
The average probability that some form of precipitation will be observed in a given day is 52%, with little variation over the course of the month.
Throughout June, the most common forms of precipitation are thunderstorms, light rain, and moderate rain.
Thunderstorms are the most severe precipitation observed during 49% of those days with precipitation. They are most likely around June 29, when it is observed during 28% of all days.
Light rain is the most severe precipitation observed during 32% of those days with precipitation. It is most likely around June 1, when it is observed during 19% of all days.
Moderate rain is the most severe precipitation observed during 16% of those days with precipitation. It is most likely around June 1, when it is observed during 9% of all days.
The likelihood of snow falling is highest around June 1, occurring in 3% of days.
Either snow rarely accumulates at this location in June or snow depth measurements are unavailable or unreliable.
The relative humidity typically ranges from 28% (dry) to 82% (humid) over the course of a typical June, rarely dropping below 15% (very dry) and reaching as high as 99% (very humid).
The air is driest around June 30, at which time the relative humidity drops below 34% (comfortable) three days out of four; it is most humid around June 1, rising above 72% (humid) three days out of four.
Dew point is often a better measure of how comfortable a person will find the weather than relative humidity because it more directly relates to whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid.
Over the course of a typical June, the dew point typically varies from 36°F (dry) to 52°F (very comfortable) and is rarely below 28°F (dry) or above 59°F (comfortable).
Over the course of June typical wind speeds vary from 1 mph to 18 mph (light air to moderate breeze), rarely exceeding 25 mph (strong breeze).
The highest average wind speed of 10 mph (gentle breeze) occurs around June 7, at which time the average daily maximum wind speed is 17 mph (moderate breeze).
The lowest average wind speed of 9 mph (gentle breeze) occurs around June 28, at which time the average daily maximum wind speed is 17 mph (moderate breeze).