May Weather in Saint George United StatesDaily high temperatures increase by 10°F, from 82°F to 92°F, rarely falling below 70°F or exceeding 101°F. Daily low temperatures increase by 9°F, from 55°F to 65°F, rarely falling below 46°F or exceeding 73°F. For reference, on July 10, the hottest day of the year, temperatures in Saint George typically range from 76°F to 102°F, while on January 5, the coldest day of the year, they range from 31°F to 52°F. Average High and Low Temperature in May in Saint George
The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on May. The horizontal axis is the day, 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 May in Saint George
frigid
15°F
freezing
32°F
very cold
45°F
cold
55°F
cool
65°F
comfortable
75°F
warm
85°F
hot
95°F
sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.
Qom, Iran (7,388 miles away) is the far-away foreign place with temperatures most similar to Saint George (view comparison). CloudsThe month of May in Saint George experiences gradually decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 29% to 23%. The clearest day of the month is May 31, with clear, mostly clear, or partly cloudy conditions 77% of the time. For reference, on February 13, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 43%, while on September 17, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 86%. Cloud Cover Categories in May in Saint George
0%
clear
20%
mostly clear
40%
partly cloudy
60%
mostly cloudy
80%
overcast
100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.
PrecipitationA wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Saint George, the chance of a wet day over the course of May is essentially constant, remaining around 6% throughout. For reference, the year's highest daily chance of a wet day is 17% on February 27, and its lowest chance is 4% on June 14. Probability of Precipitation in May in Saint George
The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).
RainfallTo show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day. The average sliding 31-day rainfall during May in Saint George is essentially constant, remaining about 0.3 inches throughout, and rarely exceeding 0.8 inches. Average Monthly Rainfall in May in Saint George
The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average snowfall.
SunOver the course of May in Saint George, the length of the day is increasing. From the start to the end of the month, the length of the day increases by 47 minutes, implying an average daily increase of 1 minute, 35 seconds, and weekly increase of 11 minutes, 3 seconds. The shortest day of the month is May 1, with 13 hours, 45 minutes of daylight and the longest day is May 31, with 14 hours, 32 minutes of daylight. Hours of Daylight and Twilight in May in Saint George
The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.
The latest sunrise of the month in Saint George is 6:39 AM on May 1 and the earliest sunrise is 23 minutes earlier at 6:16 AM on May 31. The earliest sunset is 8:24 PM on May 1 and the latest sunset is 24 minutes later at 8:48 PM on May 31. Daylight saving time is observed in Saint George during 2024, but it neither starts nor ends during May, so the entire month is in standard time. For reference, on June 20, the longest day of the year, the Sun rises at 6:14 AM and sets 14 hours, 43 minutes later, at 8:57 PM, while on December 21, the shortest day of the year, it rises at 7:44 AM and sets 9 hours, 37 minutes later, at 5:21 PM. Sunrise & Sunset with Twilight in May in Saint George
The solar day over the course of May. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray.
The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation. Solar Elevation and Azimuth in May in Saint George
northeastsouthwest
Solar elevation and azimuth over the course of May 2024. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).
MoonThe figure below presents a compact representation of key lunar data for May 2024. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon. Moon Rise, Set & Phases in May in Saint George
The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.
HumidityWe 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 chance that a given day will be muggy in Saint George is essentially constant during May, remaining around 0% throughout. For reference, on August 6, the muggiest day of the year, there are muggy conditions 1% of the time, while on January 1, the least muggy day of the year, there are muggy conditions 0% of the time. WindThis 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 Saint George is essentially constant during May, remaining within 0.2 miles per hour of 8.8 miles per hour throughout. For reference, on April 10, the windiest day of the year, the daily average wind speed is 9.1 miles per hour, while on August 2, the calmest day of the year, the daily average wind speed is 6.8 miles per hour. The hourly average wind direction in Saint George throughout May is predominantly from the south, with a peak proportion of 43% on May 31. Wind Direction in May in Saint George
northeastsouthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).
Growing SeasonDefinitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere). The growing season in Saint George typically lasts for 8.7 months (265 days), from around February 29 to around November 20, rarely starting before January 29 or after April 2, and rarely ending before November 2 or after December 7. The month of May in Saint George is reliably fully within the growing season. Time Spent in Various Temperature Bands and the Growing Season in May in Saint George
frigid
15°F
freezing
32°F
very cold
45°F
cold
55°F
cool
65°F
comfortable
75°F
warm
85°F
hot
95°F
sweltering
The percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season.
Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F. The average accumulated growing degree days in Saint George are rapidly increasing during May, increasing by 662°F, from 753°F to 1,416°F, over the course of the month. Solar EnergyThis 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 in Saint George is gradually increasing during May, rising by 0.9 kWh, from 7.5 kWh to 8.4 kWh, over the course of the month. TopographyFor the purposes of this report, the geographical coordinates of Saint George are 37.104 deg latitude, -113.584 deg longitude, and 2,697 ft elevation. The topography within 2 miles of Saint George contains significant variations in elevation, with a maximum elevation change of 778 feet and an average elevation above sea level of 2,812 feet. Within 10 miles contains significant variations in elevation (2,963 feet). Within 50 miles contains large variations in elevation (9,042 feet). The area within 2 miles of Saint George is covered by shrubs (80%) and artificial surfaces (15%), within 10 miles by shrubs (91%), and within 50 miles by shrubs (83%) and trees (12%). Data SourcesThis report illustrates the typical weather in Saint George, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016. Temperature and Dew PointThere are 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Saint George. For each station, the records are corrected for the elevation difference between that station and Saint George 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 Saint George is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Saint George and a given station. The stations contributing to this reconstruction are:
![]() To get a sense of how much these sources agree with each other, you can view a comparison of Saint George and the stations that contribute to our estimates of its temperature history and climate. Please note that each source's contribution is adjusted for elevation and the relative change present in the MERRA-2 data. Other DataAll data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , 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 airports and weather stations are provided by AskGeo.com . Maps are © OpenStreetMap contributors. DisclaimerThe information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site. We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands. We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader. Please review our full terms contained on our Terms of Service page. |