Average Weather in Moab Utah, United States
In Moab, the summers are hot and mostly clear; the winters are short, chilly, and partly cloudy; and it is dry year round. Over the course of the year, the temperature typically varies from 19°F to 95°F and is rarely below 7°F or above 101°F.
The hot season lasts for 3.5 months, from May 29 to September 15, with an average daily high temperature above 83°F. The hottest day of the year is July 8, with an average high of 95°F and low of 68°F.
The cold season lasts for 2.9 months, from November 23 to February 19, with an average daily high temperature below 50°F. The coldest day of the year is January 4, with an average low of 19°F and high of 38°F.
Average High and Low Temperature
The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.
Average Hourly Temperature
In Moab, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.
The clearer part of the year in Moab begins around May 24 and lasts for 5.2 months, ending around November 1. On September 19, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 80% of the time, and overcast or mostly cloudy 20% of the time.
The cloudier part of the year begins around November 1 and lasts for 6.7 months, ending around May 24. On March 3, the cloudiest day of the year, the sky is overcast or mostly cloudy 45% of the time, and clear, mostly clear, or partly cloudy 55% of the time.
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Moab varies throughout the year.
The wetter season lasts 10.0 months, from July 10 to May 9, with a greater than 12% chance of a given day being a wet day. The chance of a wet day peaks at 18% on July 27.
The drier season lasts 2.0 months, from May 9 to July 10. The smallest chance of a wet day is 5% on June 14.
Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 18% on July 27.
Daily Chance of Precipitation
To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Moab experiences some seasonal variation in monthly rainfall.
The rainy period of the year lasts for 8.7 months, from March 3 to November 25, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around October 2, with an average total accumulation of 1.1 inches.
The rainless period of the year lasts for 3.3 months, from November 25 to March 3. The least rain falls around December 27, with and average total accumulation of 0.3 inches.
Average Monthly Rainfall
The sliding 31-day liquid-equivalent quantity of snowfall in Moab does not vary significantly over the course of the year, staying within 0.1 inches of 0.1 inches throughout.
Average Liquid-Equivalent Monthly Snowfall
The length of the day in Moab varies significantly over the course of the year. In 2017, the shortest day is December 21, with 9 hours, 28 minutes of daylight; the longest day is June 21, with 14 hours, 52 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:53 AM on June 14, and the latest sunrise is 1 hour, 55 minutes later at 7:48 AM on November 4. The earliest sunset is at 4:56 PM on December 7, and the latest sunset is 3 hours, 50 minutes later at 8:46 PM on June 27.
Daylight saving time (DST) is observed in Moab during 2017, starting in the spring on March 12, lasting 7.8 months, and ending in the fall on November 5.
Sunrise & Sunset with Twilight and Daylight Saving Time
We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.
The perceived humidity level in Moab, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, remaining a virtually constant 0% throughout.
Humidity Comfort Levels
This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.
The average hourly wind speed in Moab experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 4.5 months, from February 22 to July 5, with average wind speeds of more than 4.0 miles per hour. The windiest day of the year is April 11, with an average hourly wind speed of 4.8 miles per hour.
The calmer time of year lasts for 7.6 months, from July 5 to February 22. The calmest day of the year is January 7, with an average hourly wind speed of 3.3 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Moab is from the south throughout the year.
This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.
The average daily incident shortwave solar energy experiences extreme seasonal variation over the course of the year.
The brighter period of the year lasts for 2.8 months, from May 5 to July 29, with an average daily incident shortwave energy per square meter above 7.3 kWh. The brightest day of the year is June 13, with an average of 8.5 kWh.
The darker period of the year lasts for 3.5 months, from November 1 to February 14, with an average daily incident shortwave energy per square meter below 3.8 kWh. The darkest day of the year is December 22, with an average of 2.6 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Moab are 38.573 deg latitude, -109.550 deg longitude, and 4,501 ft elevation.
The topography within 2 miles of Moab contains very significant variations in elevation, with a maximum elevation change of 1,549 feet and an average elevation above sea level of 4,371 feet. Within 10 miles contains very significant variations in elevation (3,340 feet). Within 50 miles also contains extreme variations in elevation (8,983 feet).
The area within 2 miles of Moab is covered by shrubs (81%) and cropland (16%), within 10 miles by shrubs (97%), and within 50 miles by shrubs (82%).
This report illustrates the typical weather in Moab, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
Temperature and Dew Point
There are 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Moab.
For each station, the records are corrected for the elevation difference between that station and Moab according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.
The estimated value at Moab is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Moab and a given station.
The stations contributing to this reconstruction are: Canyonlands Field (84%, 27 kilometers, northwest); Grand Junction Regional Airport (11%, 108 kilometers, northeast); and Cortez-Montezuma County Airport (5%, 163 kilometers, southeast).
All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Tables of the Sun, Moon and Planets , by Jean Meeus.
All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.
Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.
Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.
Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .
Time zones for aiports and weather stations are provided by AskGeo.com .
Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.