Average Weather in April in Jackson Wyoming, United States
Daily high temperatures increase by 11°F, from 43°F to 54°F, rarely falling below 33°F or exceeding 68°F.
Daily low temperatures increase by 8°F, from 21°F to 29°F, rarely falling below 9°F or exceeding 37°F.
For reference, on July 27, the hottest day of the year, temperatures in Jackson typically range from 44°F to 79°F, while on January 27, the coldest day of the year, they range from 5°F to 25°F.
Average High and Low Temperature in April
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on April. 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 April
The month of April in Jackson experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 54% throughout the month.
The clearest day of the month is April 29, with clear, mostly clear, or partly cloudy conditions 47% of the time.
For reference, on March 18, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 58%, while on July 26, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 78%.
Cloud Cover Categories in April
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Jackson, the chance of a wet day over the course of April is increasing, starting the month at 22% and ending it at 27%.
For reference, the year's highest daily chance of a wet day is 32% on May 24, and its lowest chance is 14% on July 4.
Over the course of April in Jackson, the chance of a day with only rain increases from 8% to 20%, the chance of a day with mixed snow and rain decreases from 8% to 5%, and the chance of a day with only snow decreases from 6% to 1%.
Probability of Precipitation in April
The average sliding 31-day rainfall during April in Jackson is increasing, starting the month at 0.7 inches, when it rarely exceeds 1.4 inches or falls below 0.1 inches, and ending the month at 1.4 inches, when it rarely exceeds 2.5 inches or falls below 0.5 inches.
Average Monthly Rainfall in April
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. As with rainfall, we consider the liquid-equivalent snowfall accumulated over a sliding 31-day period centered around each day.
The average sliding 31-day liquid-equivalent snowfall during April in Jackson is gradually decreasing, starting the month at 0.4 inches, when it rarely exceeds 0.8 inches or falls below 0.1 inches, and ending the month at 0.2 inches, when it rarely exceeds 0.4 inches.
Average Monthly Liquid-Equivalent Snowfall in April
Over the course of April in Jackson, the length of the day is rapidly increasing. From the start to the end of the month, the length of the day increases by 1 hour, 22 minutes, implying an average daily increase of 2 minutes, 49 seconds, and weekly increase of 19 minutes, 43 seconds.
The shortest day of the month is April 1, with 12 hours, 45 minutes of daylight and the longest day is April 30, with 14 hours, 7 minutes of daylight.
Hours of Daylight and Twilight in April
The latest sunrise of the month in Jackson is 7:04 AM on April 1 and the earliest sunrise is 47 minutes earlier at 6:17 AM on April 30.
The earliest sunset is 7:49 PM on April 1 and the latest sunset is 34 minutes later at 8:24 PM on April 30.
Daylight saving time is observed in Jackson during 2018, but it neither starts nor ends during April, so the entire month is in daylight saving time.
For reference, on June 21, the longest day of the year, the Sun rises at 5:42 AM and sets 15 hours, 25 minutes later, at 9:07 PM, while on December 21, the shortest day of the year, it rises at 7:52 AM and sets 8 hours, 57 minutes later, at 4:49 PM.
Sunrise & Sunset with Twilight and Daylight Saving Time in April
The chance that a given day will be muggy in Jackson is essentially constant during April, remaining around 0% throughout.
Humidity Comfort Levels in April
The average hourly wind speed in Jackson is essentially constant during April, remaining within 0.1 miles per hour of 5.3 miles per hour throughout.
For reference, on April 9, the windiest day of the year, the daily average wind speed is 5.4 miles per hour, while on August 4, the calmest day of the year, the daily average wind speed is 4.6 miles per hour.
The highest daily average wind speed during April is 5.4 miles per hour on April 9.
Average Wind Speed in April
Wind Direction in April
The growing season in Jackson typically lasts for 2.3 months (69 days), from around June 21 to around August 29, rarely starting before May 29 or after July 12, and rarely ending before August 7 or after September 17.
The month of April in Jackson is reliably fully outside of the growing season.
Time Spent in Various Temperature Bands and the Growing Season in April
The average accumulated growing degree days in Jackson are essentially constant during April, remaining within 12°F of 14°F throughout.
Growing Degree Days in April
The average daily incident shortwave solar energy in Jackson is gradually increasing during April, rising by 0.9 kWh, from 5.4 kWh to 6.3 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in April
For the purposes of this report, the geographical coordinates of Jackson are 43.480 deg latitude, -110.762 deg longitude, and 6,539 ft elevation.
The topography within 2 miles of Jackson contains very significant variations in elevation, with a maximum elevation change of 1,867 feet and an average elevation above sea level of 6,619 feet. Within 10 miles contains very significant variations in elevation (4,974 feet). Within 50 miles also contains extreme variations in elevation (8,668 feet).
The area within 2 miles of Jackson is covered by shrubs (48%), trees (18%), grassland (12%), and cropland (12%), within 10 miles by shrubs (49%) and trees (31%), and within 50 miles by trees (43%) and shrubs (40%).
This report illustrates the typical weather in Jackson year round, 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 Jackson.
For each station, the records are corrected for the elevation difference between that station and Jackson 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 Jackson is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Jackson and a given station.
The stations contributing to this reconstruction are: Jackson Hole Airport (90%, 14 kilometers, north); Afton Municipal Airport (6%, 87 kilometers, south); and Ralph Wenz Field (4.1%, 109 kilometers, southeast).
Time zones for aiports and weather stations are provided by AskGeo.com .