May weather forecastSaint Ann, MO
May
Weather in May
The last month of the spring, May, is a warm month in Saint Ann, Missouri, with an average temperature fluctuating between 57.6°F (14.2°C) and 74.8°F (23.8°C).Temperature
With the onset of May, Saint Ann's average high-temperature experiences a rise, moving from April's comfortable 65.3°F (18.5°C) to a moderately hot 74.8°F (23.8°C). May's average low-temperature reading settles at a refreshing 57.6°F (14.2°C).Humidity
With an average relative humidity of 77%, May is the most humid month in Saint Ann, Missouri.Rainfall
The month with the most rainfall is May, when the rain falls for 16 days and typically aggregates up to 3.31" (84mm) of precipitation.Snowfall
April through October are months without snowfall in Saint Ann.Daylight
In May, the average length of the day is 14h and 18min.On the first day of May, sunrise is at 6:02 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 5:38 am and sunset at 8:20 pm CDT.
Sunshine
In Saint Ann, 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 of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the average person.Note: An average UV index of 6 in May transforms into this advice:
Guard against overexposure. Protection from sun-induced harm is essential. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Saint Ann, MO
- Average high temperature in May: 74.8°F
The warmest month (with the highest average high temperature) is July (86.7°F).
The month with the lowest average high temperature is January (37.2°F).
- Average low temperature in May: 57.6°F
The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in May
Saint Ann, 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
Saint Ann, MO
- Average wind speed in May: 7.3mph
The windiest month (with the highest average wind speed) is January (9.3mph).
The calmest months (with the lowest average wind speed) are July and August (5.6mph).
Average humidity in May
Saint Ann, MO
- Average humidity in May: 77%
The month with the highest relative humidity is May (77%).
The month with the lowest relative humidity is October (70%).
Average rainfall in May
Saint Ann, MO
- Average rainfall in May: 3.31"
The wettest month (with the highest rainfall) is May (3.31").
The driest month (with the least rainfall) is February (1.42").
Average rainfall days in May
Saint Ann, MO
- Average rainfall days in May: 16 days
The month with the highest number of rainy days is July (16.3 days).
The months with the least rainy days are February and December (7.3 days).
Average snowfall in May
Saint Ann, MO
- Average snowfall in May: 0"
The month with the highest snowfall is February (2.05").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in May
Saint Ann, MO
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (6.8 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
Saint Ann, MO
- Average daylight in May: 14h and 18min
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 30min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days in May
Saint Ann, MO
- Average sunshine days in May: 12.1 days
The month with the most sunshine days is October (19.2 days).
The month with the least sunshine days is July (11.4 days).
Average UV index in May
Saint Ann, 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 Ann, MO
- Average cloud cover in May: 37
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
Saint Ann, 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).
