Average Weather in Randolph Utah, United States
In Randolph, the summers are warm, dry, and mostly clear and the winters are freezing, snowy, and partly cloudy. Over the course of the year, the temperature typically varies from 14°F to 83°F and is rarely below 0°F or above 89°F.
Based on the tourism score, the best time of year to visit Randolph for warm-weather activities is from early July to mid August.
The warm season lasts for 3.1 months, from June 10 to September 14, with an average daily high temperature above 72°F. The hottest day of the year is July 26, with an average high of 83°F and low of 53°F.
The cold season lasts for 3.5 months, from November 21 to March 4, with an average daily high temperature below 39°F. The coldest day of the year is January 27, with an average low of 14°F and high of 29°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 Randolph, 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 Randolph begins around June 5 and lasts for 4.5 months, ending around October 21. On July 5, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 78% of the time, and overcast or mostly cloudy 22% of the time.
The cloudier part of the year begins around October 21 and lasts for 7.5 months, ending around June 5. On March 3, the cloudiest day of the year, the sky is overcast or mostly cloudy 54% of the time, and clear, mostly clear, or partly cloudy 46% 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 Randolph varies throughout the year.
The wetter season lasts 8.6 months, from September 22 to June 10, with a greater than 17% chance of a given day being a wet day. The chance of a wet day peaks at 26% on May 17.
The drier season lasts 3.4 months, from June 10 to September 22. The smallest chance of a wet day is 9% on June 29.
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 in Randolph changes throughout the year.
Rain alone is the most common for 8.5 months, from March 2 to November 15. The highest chance of a day with rain alone is 25% on May 22.
Snow alone is the most common for 3.5 months, from November 15 to March 2. The highest chance of a day with snow alone is 11% on December 28.
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. Randolph experiences some seasonal variation in monthly rainfall.
The rainy period of the year lasts for 8.8 months, from March 5 to November 30, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around May 18, with an average total accumulation of 1.4 inches.
The rainless period of the year lasts for 3.2 months, from November 30 to March 5. The least rain falls around January 20, with an average total accumulation of 0.3 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. Randolph experiences some seasonal variation in monthly liquid-equivalent snowfall.
The snowy period of the year lasts for 6.5 months, from October 15 to April 30, with a sliding 31-day liquid-equivalent snowfall of at least 0.1 inches. The most snow falls during the 31 days centered around December 26, with an average total liquid-equivalent accumulation of 0.7 inches.
The snowless period of the year lasts for 5.5 months, from April 30 to October 15. The least snow falls around August 5, with an average total liquid-equivalent accumulation of 0.0 inches.
Average Liquid-Equivalent Monthly Snowfall
The length of the day in Randolph varies significantly over the course of the year. In 2018, the shortest day is December 21, with 9 hours, 9 minutes of daylight; the longest day is June 21, with 15 hours, 12 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:49 AM on June 14, and the latest sunrise is 2 hours, 10 minutes later at 7:59 AM on November 3. The earliest sunset is at 4:54 PM on December 8, and the latest sunset is 4 hours, 9 minutes later at 9:03 PM on June 27.
Daylight saving time (DST) is observed in Randolph 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 Randolph, 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 Randolph experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 4.7 months, from December 29 to May 20, with average wind speeds of more than 8.0 miles per hour. The windiest day of the year is March 30, with an average hourly wind speed of 9.2 miles per hour.
The calmer time of year lasts for 7.3 months, from May 20 to December 29. The calmest day of the year is August 4, with an average hourly wind speed of 6.9 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Randolph is from the west throughout the year.
Best Time of Year to Visit
To characterize how pleasant the weather is in Randolph 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 Randolph for general outdoor tourist activities is from early July to mid August, with a peak score in the last week of July.
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 Randolph 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 Randolph typically lasts for 3.9 months (120 days), from around May 27 to around September 24, rarely starting before May 4 or after June 18, and rarely ending before September 8 or after October 12.
Time Spent in Various Temperature Bands and the Growing Season
Based on growing degree days alone, the first spring blooms in Randolph should appear around May 10, only rarely appearing before April 26 or after May 27.
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 2.9 months, from May 19 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 13, with an average daily incident shortwave energy per square meter below 3.4 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 Randolph are 41.666 deg latitude, -111.182 deg longitude, and 6,283 ft elevation.
The topography within 2 miles of Randolph contains only modest variations in elevation, with a maximum elevation change of 335 feet and an average elevation above sea level of 6,304 feet. Within 10 miles contains only modest variations in elevation (2,116 feet). Within 50 miles contains large variations in elevation (5,722 feet).
The area within 2 miles of Randolph is covered by cropland (83%) and shrubs (14%), within 10 miles by shrubs (78%) and cropland (20%), and within 50 miles by shrubs (71%) and trees (14%).
This report illustrates the typical weather in Randolph, 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 5 weather stations near enough to contribute to our estimation of the temperature and dew point in Randolph.
For each station, the records are corrected for the elevation difference between that station and Randolph 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 Randolph is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Randolph and a given station.
The stations contributing to this reconstruction are: Evanston-Uinta County Burns Field (41%, 46 kilometers, south); Logan-Cache Airport (22%, 57 kilometers, west); Ogden Municipal Airport (15%, 87 kilometers, southwest); Afton Municipal Airport (12%, 118 kilometers, north); and Big Piney-Marbleton Airport (10%, 135 kilometers, northeast).
Time zones for aiports and weather stations are provided by AskGeo.com .