May weather forecastSaint Joseph, MO
May
Weather in May
May proffers an increase in temperature as Saint Joseph advances towards the summer season. Moving away from the cooler, wet climate of April, May sees a rise in mercury levels. The city basks in a high temperature of 72.3°F (22.4°C), accompanied by maximum rainfall of 4.02" (102mm), denoting the end of spring. This possibility of rain combined with ample sunshine promotes a vibrant green landscape throughout the city. To sum up, the weather in May is the perfect blend of warm temperatures and refreshing rainfall, making for a pleasantly mild climate.Temperature
May's arrival in Saint Joseph brings a modest temperature shift, moving from a comfortable 63.5°F (17.5°C) in April to a pleasant 72.3°F (22.4°C). In May, Saint Joseph experiences a temperature dip to an average of 55.2°F (12.9°C) at night.Humidity
The average relative humidity in May is 78%.Rainfall
The month with the most rainfall is May, when the rain falls for 16.5 days and typically aggregates up to 4.02" (102mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.2 snowfall days, in May, Saint Joseph aggregates 0.12" (3mm) of snow. Throughout the year, there are 22.7 snowfall days, and 8.03" (204mm) of snow is accumulated.Daylight
In Saint Joseph, the average length of the day in May is 14h and 23min.On the first day of the month, sunrise is at 6:18 am and sunset at 8:14 pm. On the last day of May, sunrise is at 5:53 am and sunset at 8:41 pm CDT.
Sunshine
The average sunshine in May is 8.7h.UV index
The average daily maximum UV index in May in Saint Joseph is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the ordinary person.Note: A daily maximum UV index of 5 in May translates into the following instructions:
Guard yourself - Precautionary measures against sun damage are advocated. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. To cut down UV radiation exposure by about half, sport a wide-brim hat. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Saint Joseph, MO
- Average high temperature in May: 72.3°F
The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is January (34.7°F).
- Average low temperature in May: 55.2°F
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).
Average pressure in May
Saint Joseph, MO
- Average pressure in May: 29.92"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in May
Saint Joseph, MO
- Average wind speed in May: 8.2mph
The windiest months (with the highest average wind speed) are February and March (9.9mph).
The calmest months (with the lowest average wind speed) are July and August (6.4mph).
Average humidity in May
Saint Joseph, MO
- Average humidity in May: 78%
The month with the highest relative humidity is June (79%).
The month with the lowest relative humidity is October (69%).
Average rainfall in May
Saint Joseph, MO
- Average rainfall in May: 4.02"
The wettest month (with the highest rainfall) is May (4.02").
The driest month (with the least rainfall) is February (0.87").
Average rainfall days in May
Saint Joseph, MO
- Average rainfall days in May: 16.5 days
The month with the highest number of rainy days is May (16.5 days).
The month with the least rainy days is January (4.8 days).
Average snowfall in May
Saint Joseph, MO
- Average snowfall in May: 0.12"
The month with the highest snowfall is January (2.68").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Saint Joseph, MO
- Average snowfall days in May: 0.2 days
The month with the highest number of snowfall days is January (6.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Saint Joseph, MO
- Average daylight in May: 14h and 24min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in May: 8h and 42min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).
Average sunshine days in May
Saint Joseph, MO
- Average sunshine days in May: 12.3 days
The month with the most sunshine days is December (21.1 days).
The month with the least sunshine days is June (11.2 days).
Average UV index in May
Saint Joseph, MO
- Average UV index in May: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in May
Saint Joseph, MO
- Average cloud cover in May: 39
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 26).
Average visibility in May
Saint Joseph, 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).
