Average Weather in May in Belton Missouri, United States
Daily high temperatures increase by 8°F, from 70°F to 79°F, rarely falling below 59°F or exceeding 87°F.
Daily low temperatures increase by 9°F, from 52°F to 61°F, rarely falling below 41°F or exceeding 70°F.
For reference, on July 21, the hottest day of the year, temperatures in Belton typically range from 71°F to 89°F, while on January 22, the coldest day of the year, they range from 23°F to 40°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 Belton experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 44% throughout the month.
The clearest day of the month is May 31, with clear, mostly clear, or partly cloudy conditions 57% of the time.
For reference, on February 12, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 51%, while on August 26, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 72%.
Cloud Cover Categories in May
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Belton, the chance of a wet day over the course of May is rapidly increasing, starting the month at 36% and ending it at 44%.
For reference, the year's highest daily chance of a wet day is 45% on June 8, and its lowest chance is 11% on January 12.
Probability of Precipitation in May
To show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.
The average sliding 31-day rainfall during May in Belton is increasing, starting the month at 4.3 inches, when it rarely exceeds 7.2 inches or falls below 1.6 inches, and ending the month at 5.1 inches, when it rarely exceeds 8.2 inches or falls below 2.2 inches.
Average Monthly Rainfall in May
Over the course of May in Belton, the length of the day is increasing. From the start to the end of the month, the length of the day increases by 51 minutes, implying an average daily increase of 1 minute, 42 seconds, and weekly increase of 11 minutes, 57 seconds.
The shortest day of the month is May 1, with 13 hours, 50 minutes of daylight and the longest day is May 31, with 14 hours, 41 minutes of daylight.
Hours of Daylight and Twilight in May
The latest sunrise of the month in Belton is 6:20 AM on May 1 and the earliest sunrise is 25 minutes earlier at 5:55 AM on May 31.
The earliest sunset is 8:10 PM on May 1 and the latest sunset is 26 minutes later at 8:36 PM on May 31.
Daylight saving time is observed in Belton during 2018, 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 5:53 AM and sets 14 hours, 53 minutes later, at 8:46 PM, while on December 21, the shortest day of the year, it rises at 7:32 AM and sets 9 hours, 27 minutes later, at 4:59 PM.
Sunrise & Sunset with Twilight in May
The chance that a given day will be muggy in Belton is very rapidly increasing during May, rising from 3% to 25% over the course of the month.
For reference, on July 22, the muggiest day of the year, there are muggy conditions 68% of the time, while on January 1, 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 Belton is decreasing during May, decreasing from 11.3 miles per hour to 9.8 miles per hour over the course of the month.
For reference, on April 1, the windiest day of the year, the daily average wind speed is 12.4 miles per hour, while on August 7, the calmest day of the year, the daily average wind speed is 7.8 miles per hour.
Average Wind Speed in May
Wind Direction in May
The growing season in Belton typically lasts for 6.8 months (209 days), from around April 4 to around October 30, rarely starting before March 14 or after April 22, and rarely ending before October 12 or after November 17.
The month of May in Belton 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 Belton are rapidly increasing during May, increasing by 451°F, from 387°F to 838°F, over the course of the month.
Growing Degree Days in May
The average daily incident shortwave solar energy in Belton is essentially constant during May, remaining within 0.2 kWh of 6.3 kWh throughout.
Average Daily Incident Shortwave Solar Energy in May
For the purposes of this report, the geographical coordinates of Belton are 38.812 deg latitude, -94.532 deg longitude, and 1,043 ft elevation.
The topography within 2 miles of Belton contains only modest variations in elevation, with a maximum elevation change of 171 feet and an average elevation above sea level of 1,056 feet. Within 10 miles also contains only modest variations in elevation (377 feet). Within 50 miles contains only modest variations in elevation (531 feet).
The area within 2 miles of Belton is covered by artificial surfaces (67%) and cropland (32%), within 10 miles by cropland (56%) and artificial surfaces (30%), and within 50 miles by cropland (71%) and trees (15%).
This report illustrates the typical weather in Belton 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 Belton.
For each station, the records are corrected for the elevation difference between that station and Belton 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 Belton is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Belton and a given station.
The stations contributing to this reconstruction are: Johnson County Executive Airport (55%, 18 kilometers, west); Lee's Summit Municipal Airport (43%, 22 kilometers, northeast); and Atkinson Municipal Airport (2.3%, 153 kilometers, south).
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 .