May weather forecastJoplin, MO

May
Weather in May
May demonstrates some of the first signs of the impending summer with a notable hike in temperature to 74.8°F (23.8°C). While the weather starts feeling warmer, rainfall also sees a peak at 5.04" (128mm), marking this month wettest in the year. Coupled with an increase in daylight hours, it is a perfect blend for blooming flora and fauna. Although there is a slight increase in the cloud cover percentage, the daylight hours compensate well enough to provide ample sunshine. Wind speeds drop to an average of 9.2mph (14.8km/h), extending a pleasant outdoor atmosphere.Temperature
Joplin's transition into May brings a slight rise in the average high-temperature, moving from an enjoyable 67.3°F (19.6°C) in April to a moderately hot 74.8°F (23.8°C). Joplin throughout May, records an average low-temperature of 57.2°F (14°C).Humidity
May is the most humid month, with an average relative humidity of 79%.Rainfall
May is the month with the most rainfall. Rain falls for 16.8 days and accumulates 5.04" (128mm) of precipitation.Snowfall
January through March, May, November and December are months with snowfall. May is the first month it typically snows. Throughout May, in the average 0.3 snowfall days, it receives 0.31" (8mm) of snow. Throughout the year, there are 11.8 snowfall days, and 5.63" (143mm) of snow is accumulated.Daylight
The average length of the day in May in Joplin is 14h and 10min.On the first day of the month, sunrise is at 6:22 am and sunset at 8:07 pm. On the last day of May, sunrise is at 5:59 am and sunset at 8:32 pm CDT.
Sunshine
In May, the average sunshine in Joplin is 8.8h.UV index
The average daily maximum UV index in May in Joplin is 6. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: The daily maximum UV index of 6 in May interprets into the following advice:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Joplin, MO
- Average high temperature in May: 74.8°F
The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is January (42.3°F).
- Average low temperature in May: 57.2°F
The month with the highest average low temperature is July (69.8°F).
The coldest month (with the lowest average low temperature) is January (27.3°F).
Average pressure in May
Joplin, MO
- Average pressure in May: 29.94"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in May
Joplin, MO
- Average wind speed in May: 9.2mph
The windiest months (with the highest average wind speed) are March and April (10.9mph).
The calmest month (with the lowest average wind speed) is July (7.1mph).
Average humidity in May
Joplin, MO
- Average humidity in May: 79%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall in May
Joplin, MO
- Average rainfall in May: 5.04"
The wettest month (with the highest rainfall) is May (5.04").
The driest month (with the least rainfall) is February (1.54").
Average rainfall days in May
Joplin, MO
- Average rainfall days in May: 16.8 days
The month with the highest number of rainy days is May (16.8 days).
The months with the least rainy days are January and December (6.8 days).
Average snowfall in May
Joplin, MO
- Average snowfall in May: 0.31"
The month with the highest snowfall is February (2.44").
The months with the least snowfall are April, June, July, August, September and October (0").
Average snowfall days in May
Joplin, MO
- Average snowfall days in May: 0.3 days
The month with the highest number of snowfall days is February (4 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Joplin, MO
- Average daylight in May: 14h and 12min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in May: 8h and 48min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 5h and 24min).
Average sunshine days in May
Joplin, MO
- Average sunshine days in May: 12.2 days
The month with the most sunshine days is December (21.1 days).
The month with the least sunshine days is May (12.2 days).
Average UV index in May
Joplin, MO
- Average UV index in May: 6
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in May
Joplin, MO
- Average cloud cover in May: 38
The months with the most cloud cover are February and March (Cloud cover 45).
The months with the least cloud cover are June, July and August (Cloud cover 25).
Average visibility in May
Joplin, MO
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).





