Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
May's arrival coincides with a rise in the average high-temperature, moving from April's refreshing 66.6°F (19.2°C) to a moderately hot 75.7°F (24.3°C). During the nights in May, Saint Robert experiences a consistent average temperature of 55.9°F (13.3°C).Humidity
March and May, with an average relative humidity of 77%, are the most humid months.Rainfall
The month with the most rainfall is May, when the rain falls for 17.3 days and typically aggregates up to 4.29" (109mm) of precipitation.Snowfall
Months with snowfall in Saint Robert are January through May, October through December. May is the last month it regularly snows. During 0.1 snowfall days, in May, Saint Robert aggregates 0.04" (1mm) of snow. Throughout the year, there are 23.8 snowfall days, and 10.12" (257mm) of snow is accumulated.Daylight
The average length of the day in May is 14h and 14min.On the first day of May, sunrise is at 6:11 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 5:48 am and sunset at 8:24 pm CDT.
Sunshine
In Saint Robert, the average sunshine in May is 9.2h.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the ordinary person.Note: In May, the maximum UV index of 6 suggests this advice:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average May temperature?
What is the most humid month?
What is the average humidity in May?
What is the rainiest month?
How much does it rain in May?
What is the last month it snows?
What is the average length of the day in May?
What time are sunrise and sunset in May?
How many hours of sunshine does Saint Robert have in May?
What are the months with the highest UV index?
What is the UV index intensity in May?
Average temperature in May
Saint Robert, MO
- Average high temperature in May: 75.7°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 (40.3°F).
- Average low temperature in May: 55.9°F
The month with the highest average low temperature is July (67.8°F).
The coldest month (with the lowest average low temperature) is January (25°F).
Average pressure in May
Saint Robert, MO
- Average pressure in May: 29.95"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in May
Saint Robert, MO
- Average wind speed in May: 7.1mph
The windiest month (with the highest average wind speed) is January (8.7mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).
Average humidity in May
Saint Robert, MO
- Average humidity in May: 77%
The months with the highest relative humidity are March and May (77%).
The months with the lowest relative humidity are August, September and October (73%).
Average rainfall in May
Saint Robert, MO
- Average rainfall in May: 4.29"
The wettest month (with the highest rainfall) is May (4.29").
The driest month (with the least rainfall) is January (1.61").
Average rainfall days in May
Saint Robert, MO
- Average rainfall days in May: 17.3 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is December (7.5 days).
Average snowfall in May
Saint Robert, MO
- Average snowfall in May: 0.04"
The month with the highest snowfall is February (3.54").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Saint Robert, MO
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is February (7.3 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 Robert, MO
- Average daylight in May: 14h and 1min
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 36min).
- Average sunshine in May: 9h and 1min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The months with the least sunshine are January and February (Average sunshine: 4h and 54min).
Average sunshine days in May
Saint Robert, MO
- Average sunshine days in May: 11.7 days
The month with the most sunshine days is October (19.2 days).
The month with the least sunshine days is May (11.7 days).
Average UV index in May
Saint Robert, MO
- Average UV index in May: 6
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in May
Saint Robert, MO
- Average cloud cover in May: 39
The months with the most cloud cover are February and March (Cloud cover 48).
The month with the least cloud cover is June (Cloud cover 28).
Average visibility in May
Saint Robert, MO
- Average visibility in May: 5mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Saint Robert, Missouri, USA
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