Average Weather in May in Dayton Texas, United States
Daily high temperatures increase by 6°F, from 82°F to 88°F, rarely falling below 76°F or exceeding 92°F.
Daily low temperatures increase by 6°F, from 64°F to 71°F, rarely falling below 54°F or exceeding 76°F.
For reference, on August 6, the hottest day of the year, temperatures in Dayton typically range from 75°F to 93°F, while on January 7, the coldest day of the year, they range from 44°F to 62°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
Bou Attouche, Tunisia (5,839 miles away); Fuzhou, China (7,957 miles); and Roxby Downs, Australia (9,386 miles) are the far-away foreign places with temperatures most similar to Dayton (view comparison).
The month of May in Dayton experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 37% throughout the month.
The clearest day of the month is May 31, with clear, mostly clear, or partly cloudy conditions 65% of the time.
For reference, on August 20, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 48%, while on October 12, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 69%.
Cloud Cover Categories in May
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Dayton, the chance of a wet day over the course of May is rapidly increasing, starting the month at 27% and ending it at 34%.
For reference, the year's highest daily chance of a wet day is 41% on June 23, and its lowest chance is 22% on April 1.
Probability of Precipitation in May
The average sliding 31-day rainfall during May in Dayton is increasing, starting the month at 3.9 inches, when it rarely exceeds 7.4 inches or falls below 0.9 inches, and ending the month at 4.8 inches, when it rarely exceeds 9.5 inches or falls below 1.2 inches.
Average Monthly Rainfall in May
Over the course of May in Dayton, the length of the day is increasing. From the start to the end of the month, the length of the day increases by 36 minutes, implying an average daily increase of 1 minute, 12 seconds, and weekly increase of 8 minutes, 27 seconds.
The shortest day of the month is May 1, with 13 hours, 20 minutes of daylight and the longest day is May 31, with 13 hours, 57 minutes of daylight.
Hours of Daylight and Twilight in May
The latest sunrise of the month in Dayton is 6:36 AM on May 1 and the earliest sunrise is 18 minutes earlier at 6:19 AM on May 31.
The earliest sunset is 7:57 PM on May 1 and the latest sunset is 19 minutes later at 8:15 PM on May 31.
Daylight saving time is observed in Dayton 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 6:18 AM and sets 14 hours, 5 minutes later, at 8:23 PM, while on December 21, the shortest day of the year, it rises at 7:11 AM and sets 10 hours, 13 minutes later, at 5:24 PM.
Sunrise & Sunset with Twilight in May
The chance that a given day will be muggy in Dayton is very rapidly increasing during May, rising from 51% to 85% over the course of the month.
For reference, on July 20, the muggiest day of the year, there are muggy conditions 99% of the time, while on January 23, the least muggy day of the year, there are muggy conditions 5% of the time.
Humidity Comfort Levels in May
The average hourly wind speed in Dayton is gradually decreasing during May, decreasing from 7.5 miles per hour to 6.7 miles per hour over the course of the month.
For reference, on April 11, the windiest day of the year, the daily average wind speed is 7.8 miles per hour, while on August 16, the calmest day of the year, the daily average wind speed is 5.2 miles per hour.
Average Wind Speed in May
Wind Direction in May
Dayton is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.
The average surface water temperature in Dayton is increasing during May, rising by 7°F, from 74°F to 80°F, over the course of the month.
Average Water Temperature in May
The growing season in Dayton typically lasts for 10 months (302 days), from around February 9 to around December 9, rarely starting after March 17, or ending before November 15.
The month of May in Dayton 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 Dayton are rapidly increasing during May, increasing by 757°F, from 1,367°F to 2,124°F, over the course of the month.
Growing Degree Days in May
The average daily incident shortwave solar energy in Dayton is essentially constant during May, remaining within 0.1 kWh of 6.4 kWh throughout.
Average Daily Incident Shortwave Solar Energy in May
For the purposes of this report, the geographical coordinates of Dayton are 30.047 deg latitude, -94.885 deg longitude, and 69 ft elevation.
The topography within 2 miles of Dayton is essentially flat, with a maximum elevation change of 72 feet and an average elevation above sea level of 60 feet. Within 10 miles is essentially flat (105 feet). Within 50 miles also contains only modest variations in elevation (443 feet).
The area within 2 miles of Dayton is covered by herbaceous vegetation (51%), cropland (35%), and artificial surfaces (14%), within 10 miles by herbaceous vegetation (50%) and cropland (45%), and within 50 miles by herbaceous vegetation (30%) and cropland (22%).
This report illustrates the typical weather in Dayton 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 4 weather stations near enough to contribute to our estimation of the temperature and dew point in Dayton.
For each station, the records are corrected for the elevation difference between that station and Dayton 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 Dayton is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Dayton and a given station.
The stations contributing to this reconstruction are: George Bush Intercontinental Airport (33%, 46 kilometers, west); Ellington Field (25%, 55 kilometers, southwest); Montgomery County Airport (21%, 61 kilometers, northwest); and Beaumont Municipal Airport (20%, 65 kilometers, east).
Time zones for aiports and weather stations are provided by AskGeo.com .