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
The beginning of May signals a rise in the average high-temperature, moving from a refreshing 65.5°F (18.6°C) in April to a moderately hot 74.7°F (23.7°C). Throughout May in Lake Saint Louis, a steady low-temperature average of 56.7°F (13.7°C) is noted.Humidity
May is the most humid month, with an average relative humidity of 79%.Rainfall
In Lake Saint Louis, in May, it is raining for 17.2 days, with typically 3.78" (96mm) of accumulated precipitation. Throughout the year, there are 152.1 rainfall days, and 32.01" (813mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall.Daylight
In Lake Saint Louis, the average length of the day in May is 14h and 19min.On the first day of May in Lake Saint Louis, sunrise is at 6:04 am and sunset at 7:55 pm. On the last day of the month, sunrise is at 5:40 am and sunset at 8:21 pm CDT.
Sunshine
In Lake Saint Louis, Missouri, the average sunshine in May is 9.5h.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the ordinary person.Note: A maximum UV index of 6 in May translates into the following recommendations:
Stay clear of intense sun exposure. Solar protection is of utmost significance. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures in Lake Saint Louis?
What is the most humid month in Lake Saint Louis?
What is the average humidity in May in Lake Saint Louis?
How much does it rain in Lake Saint Louis in May?
When it does not snow in Lake Saint Louis?
Does it snow in Lake Saint Louis in May?
How many hours of daylight does Lake Saint Louis have in May?
When is the sunrise / sunset in May in Lake Saint Louis?
How many hours of sunshine does Lake Saint Louis have in May?
What is the month with the highest UV index in Lake Saint Louis?
What is the UV index reading in May in Lake Saint Louis?
Average temperature in May
Lake Saint Louis, MO
- Average high temperature in May: 74.7°F
The warmest month (with the highest average high temperature) is July (87.1°F).
The month with the lowest average high temperature is January (37.4°F).
- Average low temperature in May: 56.7°F
The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (23.5°F).
Average pressure in May
Lake Saint Louis, 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 (29.92"Hg).
Average wind speed in May
Lake Saint Louis, MO
- Average wind speed in May: 7.1mph
The windiest months (with the highest average wind speed) are January and February (8.9mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).
Average humidity in May
Lake Saint Louis, 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 (72%).
Average rainfall in May
Lake Saint Louis, MO
- Average rainfall in May: 3.78"
The wettest month (with the highest rainfall) is April (3.82").
The driest month (with the least rainfall) is February (1.77").
Average rainfall days in May
Lake Saint Louis, MO
- Average rainfall days in May: 17.2 days
The month with the highest number of rainy days is May (17.2 days).
The month with the least rainy days is January (7.8 days).
Average snowfall in May
Lake Saint Louis, MO
- Average snowfall in May: 0"
The month with the highest snowfall is February (3.15").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Lake Saint Louis, MO
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (7.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Lake Saint Louis, MO
- Average daylight in May: 14h and 2min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in May: 9h and 3min
The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days in May
Lake Saint Louis, MO
- Average sunshine days in May: 11.5 days
The month with the most sunshine days is October (18.6 days).
The month with the least sunshine days is June (10.9 days).
Average UV index in May
Lake Saint Louis, 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, November and December (UV index 2).
Average cloud cover in May
Lake Saint Louis, MO
- Average cloud cover in May: 36
The month with the most cloud cover is January (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in May
Lake Saint Louis, 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).
Lake Saint Louis, Missouri, USA
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