This report describes the typical weather at the Homer Airport (Homer, Alaska, United States) weather station over the course of an average August. It is based on the historical records from 1974 to 2012. Earlier records are either unavailable or unreliable.
Homer, Alaska has a continental climate with short dry cool summers. The area within 25 mi of this station is covered by shrublands (48%), oceans and seas (35%), and tundra (12%).
The month of August is characterized by gradually falling daily high temperatures, with daily highs around 60°F throughout the month, exceeding 66°F or dropping below 54°F only one day in ten.
Over the course of August, the length of the day is very rapidly decreasing. From the start to the end of the month, the length of the day decreases by 2:35 hours, implying an average day-over-day decrease of 5.0 minutes.
The shortest day of the month is August 31 with 14:08 hours of daylight; the longest day is August 1 with 16:43 hours of daylight.
The earliest sunrise is at 5:50am on August 1; the latest sunset is at 10:33pm on August 1; the latest sunrise is at 7:02am on August 31; the earliest sunset is at 9:09pm on August 31.
Daylight saving time is observed in 2012 but it neither starts nor ends in August, so the entire month is in daylight time.
The median cloud cover is 92% (mostly cloudy) and does not vary substantially over the course of the month.
On August 16, a representative day, the sky is clear or mostly clear 25% of the time, partly cloudy 12% of the time, and mostly cloudy or overcast 60% of the time.
The probability that precipitation will be observed at this location varies throughout the month. Precipitation is most likely around August 31, occurring in 55% of days. Precipitation is least likely around August 1, occurring in 49% of days.
Throughout August, the most common forms of precipitation are light rain and moderate rain.
Light rain is the most severe precipitation observed during 76% of those days with precipitation. It is most likely around August 30, when it is observed during 42% of all days.
Moderate rain is the most severe precipitation observed during 19% of those days with precipitation. It is most likely around August 31, when it is observed during 11% of all days.
Either snow is exceptionally unlikely to fall at this location in August or this station does not reliably report precipitation types.
The relative humidity typically ranges from 63% (mildly humid) to 96% (very humid) over the course of a typical August, rarely dropping below 47% (comfortable) and reaching as high as 100% (very humid).
The air is driest around August 30, at which time the relative humidity drops below 71% (humid) three days out of four; it is most humid around August 14, rising above 94% (very 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 August, the dew point typically varies from 41°F (dry) to 52°F (very comfortable) and is rarely below 35°F (dry) or above 56°F (comfortable).
The time of the month between August 1 and August 30 is the most comfortable, with dew points that are neither too dry nor too muggy.
Over the course of August typical wind speeds vary from 0 mph to 14 mph (calm to moderate breeze), rarely exceeding 19 mph (fresh breeze).
The highest average wind speed of 7 mph (light breeze) occurs around August 5, at which time the average daily maximum wind speed is 14 mph (moderate breeze).
The lowest average wind speed of 7 mph (light breeze) occurs around August 25, at which time the average daily maximum wind speed is 13 mph (moderate breeze).