Average Weather in May in Jasper Tennessee, United States
In Jasper, the month of May is characterized by rising daily high temperatures, with daily highs increasing by 7°F, from 76°F to 82°F over the course of the month, and rarely exceeding 89°F or dropping below 65°F.
Daily low temperatures increase by 9°F, from 54°F to 63°F, rarely falling below 43°F or exceeding 69°F.
For reference, on July 22, the hottest day of the year, temperatures in Jasper typically range from 70°F to 89°F, while on January 25, the coldest day of the year, they range from 32°F to 50°F.
Average High and Low Temperature in May
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
The month of May in Jasper experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 46% throughout the month.
The clearest day of the month is May 1, with clear, mostly clear, or partly cloudy conditions 55% of the time.
For reference, on January 3, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 58%, while on September 20, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 67%.
Cloud Cover Categories in May
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Jasper, the chance of a wet day over the course of May is increasing, starting the month at 32% and ending it at 37%.
For reference, the year's highest daily chance of a wet day is 43% on July 9, and its lowest chance is 21% on October 15.
Probability of Precipitation in May
The average sliding 31-day rainfall during May in Jasper is decreasing, starting the month at 4.1 inches, when it rarely exceeds 7.8 inches or falls below 1.6 inches, and ending the month at 3.3 inches, when it rarely exceeds 5.4 inches or falls below 1.4 inches.
Average Monthly Rainfall in May
Over the course of May in Jasper, the length of the day is increasing. From the start to the end of the month, the length of the day increases by 44 minutes, implying an average daily increase of 1 minute, 28 seconds, and weekly increase of 10 minutes, 18 seconds.
The shortest day of the month is May 1, with 13 hours, 37 minutes of daylight and the longest day is May 31, with 14 hours, 21 minutes of daylight.
Hours of Daylight and Twilight in May
The latest sunrise of the month in Jasper is 5:51 AM on May 1 and the earliest sunrise is 21 minutes earlier at 5:29 AM on May 31.
The earliest sunset is 7:28 PM on May 1 and the latest sunset is 23 minutes later at 7:51 PM on May 31.
Daylight saving time is observed in Jasper during 2017, but it neither starts nor ends during May, so the entire month is in daylight saving time.
For reference, on June 21, the longest day of the year, the Sun rises at 5:28 AM and sets 14 hours, 31 minutes later, at 8:00 PM, while on December 21, the shortest day of the year, it rises at 6:46 AM and sets 9 hours, 48 minutes later, at 4:34 PM.
Sunrise & Sunset with Twilight in May
The chance that a given day will be muggy in Jasper is very rapidly increasing during May, rising from 5% to 40% over the course of the month.
For reference, on July 24, the muggiest day of the year, there are muggy conditions 86% of the time, while on January 14, the least muggy day of the year, there are muggy conditions 0% of the time.
Humidity Comfort Levels in May
The average hourly wind speed in Jasper is gradually decreasing during May, decreasing from 4.8 miles per hour to 3.9 miles per hour over the course of the month.
For reference, on February 26, the windiest day of the year, the daily average wind speed is 5.8 miles per hour, while on August 1, the calmest day of the year, the daily average wind speed is 3.3 miles per hour.
Average Wind Speed in May
Wind Direction in May
The growing season in Jasper typically lasts for 7.3 months (222 days), from around March 29 to around November 7, rarely starting before March 8 or after April 18, and rarely ending before October 20 or after November 25.
The month of May in Jasper is reliably fully within the growing season.
Time Spent in Various Temperature Bands and the Growing Season in May
The average accumulated growing degree days in Jasper is rapidly increasing during May, increasing by 542°F, from 635°F to 1,177°F, over the course of the month.
Growing Degree Days in May
The average daily incident shortwave solar energy in Jasper is essentially constant during May, remaining within 0.2 kWh of 6.4 kWh throughout.
Average Daily Incident Shortwave Solar Energy in May
For the purposes of this report, the geographical coordinates of Jasper are 35.074 deg latitude, -85.626 deg longitude, and 682 ft elevation.
The topography within 2 miles of Jasper contains very significant variations in elevation, with a maximum elevation change of 1,312 feet and an average elevation above sea level of 778 feet. Within 10 miles also contains very significant variations in elevation (1,552 feet). Within 50 miles also contains very significant variations in elevation (1,900 feet).
The area within 2 miles of Jasper is covered by cropland (51%), trees (38%), and artificial surfaces (11%), within 10 miles by trees (74%) and cropland (18%), and within 50 miles by trees (62%) and cropland (32%).
This report illustrates the typical weather in Jasper 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 5 weather stations near enough to contribute to our estimation of the temperature and dew point in Jasper.
For each station, the records are corrected for the elevation difference between that station and Jasper 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 Jasper is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Jasper and a given station.
The stations contributing to this reconstruction are: Lovell Field (35%, 39 kilometers, east); Winchester Municipal Airport (30%, 42 kilometers, west); Scottsboro Municipal Airport Word Field (21%, 55 kilometers, southwest); Crossville Memorial Airport (7%, 109 kilometers, northeast); and Upper Cumberland Regional Airport (7%, 110 kilometers, north).
Time zones for aiports and weather stations are provided by AskGeo.com .