This report describes the typical weather at the Canyonlands Field (Moab, Utah, United States) weather station over the course of an average April. It is based on the historical records from 1998 to 2012. Earlier records are either unavailable or unreliable.
Moab, Utah has a cold semi-arid steppe climate. The area within 25 mi of this station is covered by shrublands (98%).
The month of April is characterized by rising daily high temperatures, with daily highs increasing from 62°F to 71°F over the course of the month, exceeding 82°F or dropping below 51°F only one day in ten.
Over the course of April, the length of the day is increasing. From the start to the end of the month, the length of the day increases by 1:09 hours, implying an average day-over-day increase of 2.3 minutes.
The shortest day of the month is April 1 with 12:40 hours of daylight; the longest day is April 30 with 13:49 hours of daylight.
The earliest sunrise is at 6:22am on April 30; the latest sunset is at 8:11pm on April 30; the latest sunrise is at 7:03am on April 1; the earliest sunset is at 7:43pm on April 1.
Daylight saving time is observed in 2012 but it neither starts nor ends in April, so the entire month is in daylight time.
The median cloud cover is 1% (clear) and does not vary substantially over the course of the month.
On April 15, a representative day, the sky is clear or mostly clear 72% of the time, partly cloudy 4% of the time, and mostly cloudy or overcast 17% of the time.
The average probability that some form of precipitation will be observed in a given day is 21%, with little variation over the course of the month.
Throughout April, the most common forms of precipitation are light rain, thunderstorms, and light snow.
Light rain is the most severe precipitation observed during 53% of those days with precipitation. It is most likely around April 17, when it is observed during 12% of all days.
Thunderstorms are the most severe precipitation observed during 23% of those days with precipitation. They are most likely around April 30, when it is observed during 6% of all days.
Light snow is the most severe precipitation observed during 12% of those days with precipitation. It is most likely around April 1, when it is observed during 4% of all days.
The likelihood of snow falling is highest around April 1, occurring in 4% of days.
Either snow rarely accumulates at this location in April or snow depth measurements are unavailable or unreliable.
The relative humidity typically ranges from 16% (dry) to 62% (mildly humid) over the course of a typical April, rarely dropping below 8% (very dry), or exceeding 90% (very humid).
The air is driest around April 20, at which time the relative humidity drops below 19% (dry) three days out of four; it is most humid around April 1, rising above 45% (comfortable) 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 April, the dew point typically varies from 13°F (dry) to 31°F (dry) and is rarely below 3°F (dry) or above 43°F (dry).
Over the course of April typical wind speeds vary from 0 mph to 20 mph (calm to fresh breeze), rarely exceeding 30 mph (strong breeze).
The highest average wind speed of 9 mph (gentle breeze) occurs around April 9, at which time the average daily maximum wind speed is 19 mph (fresh breeze).
The lowest average wind speed of 8 mph (gentle breeze) occurs around April 1, at which time the average daily maximum wind speed is 18 mph (fresh breeze).