Average Weather in Helper Utah, United States
In Helper, 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 15°F to 86°F and is rarely below 3°F or above 94°F.
Based on the tourism score, the best time of year to visit Helper for warm-weather activities is from late June to late August.
The hot season lasts for 3.3 months, from June 3 to September 13, with an average daily high temperature above 75°F. The hottest day of the year is July 14, with an average high of 86°F and low of 59°F.
The cold season lasts for 3.1 months, from November 20 to February 25, with an average daily high temperature below 42°F. The coldest day of the year is January 4, with an average low of 15°F and high of 31°F.
Average High and Low Temperature
Average Hourly Temperature
Hozat, Turkey (6,681 miles away); Omīdcheh, Iran (6,895 miles); and Ḩukūmatī Azrah, Afghanistan (7,342 miles) are the far-away foreign places with temperatures most similar to Helper (view comparison).
In Helper, 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 Helper begins around May 30 and lasts for 4.9 months, ending around October 27. On September 11, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 79% of the time, and overcast or mostly cloudy 21% of the time.
The cloudier part of the year begins around October 27 and lasts for 7.1 months, ending around May 30. On February 29, the cloudiest day of the year, the sky is overcast or mostly cloudy 48% of the time, and clear, mostly clear, or partly cloudy 52% of the time.
Cloud Cover Categories
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Helper varies throughout the year.
The wetter season lasts 10 months, from July 17 to May 25, with a greater than 13% chance of a given day being a wet day. The chance of a wet day peaks at 19% on September 2.
The drier season lasts 1.8 months, from May 25 to July 17. The smallest chance of a wet day is 7% on June 27.
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 Helper changes throughout the year.
Rain alone is the most common for 8.9 months, from February 27 to November 25. The highest chance of a day with rain alone is 19% on September 2.
Snow alone is the most common for 2.7 months, from November 25 to February 15. The highest chance of a day with snow alone is 9% on December 26.
Mixed snow and rain is the most common for 1.7 weeks, from February 15 to February 27. The highest chance of a day with mixed snow and rain is 7% on February 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. Helper experiences some seasonal variation in monthly rainfall.
The rainy period of the year lasts for 8.5 months, from February 29 to November 13, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around September 23, with an average total accumulation of 1.1 inches.
The rainless period of the year lasts for 3.5 months, from November 13 to February 29. The least rain falls around January 19, with an average total accumulation of 0.2 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. Helper experiences some seasonal variation in monthly liquid-equivalent snowfall.
The snowy period of the year lasts for 4.9 months, from November 1 to March 28, 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 0.6 inches.
The snowless period of the year lasts for 7.1 months, from March 28 to November 1. The least snow falls around July 30, with an average total liquid-equivalent accumulation of 0.0 inches.
Average Liquid-Equivalent Monthly Snowfall
The length of the day in Helper varies significantly over the course of the year. In 2020, the shortest day is December 21, with 9 hours, 22 minutes of daylight; the longest day is June 20, with 14 hours, 59 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:55 AM on June 13, and the latest sunrise is 1 hour, 57 minutes later at 7:51 AM on October 31. The earliest sunset is at 4:58 PM on December 7, and the latest sunset is 3 hours, 56 minutes later at 8:55 PM on June 26.
Daylight saving time (DST) is observed in Helper during 2020, starting in the spring on March 8, lasting 7.8 months, and ending in the fall on November 1.
Sunrise & Sunset with Twilight and Daylight Saving Time
The perceived humidity level in Helper, 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
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in Helper experiences significant seasonal variation over the course of the year.
The windier part of the year lasts for 6.0 months, from December 22 to June 22, with average wind speeds of more than 7.4 miles per hour. The windiest day of the year is April 5, with an average hourly wind speed of 8.9 miles per hour.
The calmer time of year lasts for 6.0 months, from June 22 to December 22. The calmest day of the year is August 10, with an average hourly wind speed of 5.9 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Helper is from the west throughout the year.
Best Time of Year to Visit
To characterize how pleasant the weather is in Helper 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 Helper for general outdoor tourist activities is from late June to late August, with a peak score in the third 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 Helper for hot-weather activities is from late June to early August, with a peak score in the second week of July.
The growing season in Helper typically lasts for 5.0 months (152 days), from around May 7 to around October 6, rarely starting before April 18 or after May 28, and rarely ending before September 15 or after October 27.
Time Spent in Various Temperature Bands and the Growing Season
Based on growing degree days alone, the first spring blooms in Helper should appear around April 24, only rarely appearing before April 7 or after May 12.
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 8 to August 3, with an average daily incident shortwave energy per square meter above 7.2 kWh. The brightest day of the year is June 17, with an average of 8.4 kWh.
The darker period of the year lasts for 3.4 months, from October 31 to February 12, with an average daily incident shortwave energy per square meter below 3.6 kWh. The darkest day of the year is December 21, with an average of 2.5 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Helper are 39.684 deg latitude, -110.855 deg longitude, and 6,224 ft elevation.
The topography within 2 miles of Helper contains very significant variations in elevation, with a maximum elevation change of 1,873 feet and an average elevation above sea level of 6,200 feet. Within 10 miles contains very significant variations in elevation (4,377 feet). Within 50 miles also contains extreme variations in elevation (7,638 feet).
The area within 2 miles of Helper is covered by shrubs (90%), within 10 miles by shrubs (86%), and within 50 miles by shrubs (74%) and trees (20%).
This report illustrates the typical weather in Helper, 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 Helper.
For each station, the records are corrected for the elevation difference between that station and Helper 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 Helper is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Helper and a given station.
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.
Time zones for aiports and weather stations are provided by AskGeo.com .