Average Weather in Marriott-Slaterville Utah, United States
In Marriott-Slaterville, the summers are hot and mostly clear, the winters are freezing and partly cloudy, and it is dry year round. Over the course of the year, the temperature typically varies from 23°F to 91°F and is rarely below 11°F or above 98°F.
Based on the tourism score, the best time of year to visit Marriott-Slaterville for warm-weather activities is from late June to early September.
The hot season lasts for 3.1 months, from June 10 to September 13, with an average daily high temperature above 80°F. The hottest day of the year is July 24, with an average high of 91°F and low of 66°F.
The cold season lasts for 3.1 months, from November 23 to February 25, with an average daily high temperature below 46°F. The coldest day of the year is January 2, with an average low of 23°F and high of 34°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
Bucharest, Romania (5,980 miles away); Arguvan, Turkey (6,607 miles); and Marand, Iran (6,764 miles) are the far-away foreign places with temperatures most similar to Marriott-Slaterville (view comparison).
In Marriott-Slaterville, 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 Marriott-Slaterville begins around June 2 and lasts for 4.6 months, ending around October 23. On August 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 October 23 and lasts for 7.3 months, ending around June 2. On March 3, the cloudiest day of the year, the sky is overcast or mostly cloudy 55% of the time, and clear, mostly clear, or partly cloudy 45% of the time.
Cloud Cover Categories
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Marriott-Slaterville varies throughout the year.
The wetter season lasts 7.8 months, from October 13 to June 8, with a greater than 17% chance of a given day being a wet day. The chance of a wet day peaks at 27% on May 3.
The drier season lasts 4.2 months, from June 8 to October 13. The smallest chance of a wet day is 7% on July 4.
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 27% on May 3.
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. Marriott-Slaterville experiences some seasonal variation in monthly rainfall.
The rainy period of the year lasts for 11 months, from July 26 to July 2, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around May 11, with an average total accumulation of 1.7 inches.
The rainless period of the year lasts for 3.4 weeks, from July 2 to July 26. The least rain falls around July 12, with an average total accumulation of 0.4 inches.
Average Monthly Rainfall
We report snowfall in liquid-equivalent terms. The actual depth of new snowfall is typically between 5 and 10 times the liquid-equivalent amount, assuming the ground is frozen. Colder, drier snow tends to be on the higher end of that range and warmer, wetter snow on the lower end.
As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day of the year. Marriott-Slaterville experiences some seasonal variation in monthly liquid-equivalent snowfall.
The snowy period of the year lasts for 4.0 months, from November 12 to March 13, with a sliding 31-day liquid-equivalent snowfall of at least 0.1 inches. The most snow falls during the 31 days centered around January 6, with an average total liquid-equivalent accumulation of 0.3 inches.
The snowless period of the year lasts for 8.0 months, from March 13 to November 12. The least snow falls around July 28, with an average total liquid-equivalent accumulation of 0.0 inches.
Average Liquid-Equivalent Monthly Snowfall
The length of the day in Marriott-Slaterville varies significantly over the course of the year. In 2018, the shortest day is December 21, with 9 hours, 12 minutes of daylight; the longest day is June 21, with 15 hours, 9 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:54 AM on June 14, and the latest sunrise is 2 hours, 7 minutes later at 8:01 AM on November 3. The earliest sunset is at 4:58 PM on December 8, and the latest sunset is 4 hours, 6 minutes later at 9:05 PM on June 26.
Daylight saving time (DST) is observed in Marriott-Slaterville during 2018, starting in the spring on March 11, lasting 7.8 months, and ending in the fall on November 4.
Sunrise & Sunset with Twilight and Daylight Saving Time
The perceived humidity level in Marriott-Slaterville, 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
The average hourly wind speed in Marriott-Slaterville experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 2.7 months, from February 17 to May 9, with average wind speeds of more than 5.8 miles per hour. The windiest day of the year is March 30, with an average hourly wind speed of 6.5 miles per hour.
The calmer time of year lasts for 9.3 months, from May 9 to February 17. The calmest day of the year is January 2, with an average hourly wind speed of 5.0 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Marriott-Slaterville varies throughout the year.
The wind is most often from the west for 4.6 months, from March 22 to August 9 and for 1.1 months, from September 8 to October 10, with a peak percentage of 37% on May 3. The wind is most often from the south for 4.3 weeks, from August 9 to September 8 and for 5.4 months, from October 10 to March 22, with a peak percentage of 33% on August 18.
Best Time of Year to Visit
To characterize how pleasant the weather is in Marriott-Slaterville throughout the year, we compute two travel scores.
The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best time of year to visit Marriott-Slaterville for general outdoor tourist activities is from late June to early September, with a peak score in the second week of August.
The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Marriott-Slaterville for hot-weather activities is from early July to mid August, with a peak score in the last week of July.
For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.
Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.
Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.
Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.
Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.
The growing season in Marriott-Slaterville typically lasts for 6.5 months (198 days), from around April 13 to around October 29, rarely starting before March 16 or after May 5, and rarely ending before October 11 or after November 15.
Time Spent in Various Temperature Bands and the Growing Season
Based on growing degree days alone, the first spring blooms in Marriott-Slaterville should appear around April 10, only rarely appearing before March 27 or after April 28.
Growing Degree Days
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 3.0 months, from May 17 to August 16, with an average daily incident shortwave energy per square meter above 7.1 kWh. The brightest day of the year is June 29, with an average of 8.4 kWh.
The darker period of the year lasts for 3.5 months, from October 31 to February 14, with an average daily incident shortwave energy per square meter below 3.3 kWh. The darkest day of the year is December 21, with an average of 2.1 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Marriott-Slaterville are 41.252 deg latitude, -112.025 deg longitude, and 4,255 ft elevation.
The topography within 2 miles of Marriott-Slaterville is essentially flat, with a maximum elevation change of 75 feet and an average elevation above sea level of 4,251 feet. Within 10 miles is essentially flat (5,479 feet). Within 50 miles also contains extreme variations in elevation (7,060 feet).
The area within 2 miles of Marriott-Slaterville is covered by cropland (59%), artificial surfaces (25%), and shrubs (16%), within 10 miles by cropland (36%) and shrubs (23%), and within 50 miles by shrubs (36%) and water (21%).
This report illustrates the typical weather in Marriott-Slaterville, 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 2 weather stations near enough to contribute to our estimation of the temperature and dew point in Marriott-Slaterville.
For each station, the records are corrected for the elevation difference between that station and Marriott-Slaterville 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 Marriott-Slaterville is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Marriott-Slaterville and a given station.
Time zones for aiports and weather stations are provided by AskGeo.com .