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
With the onset of May, Webster Groves experiences a temperature shift, with the average high-temperature moving from a comfortable 65.5°F (18.6°C) in April to a warm 74.8°F (23.8°C). In May, Webster Groves experiences a temperature dip to an average of 57.7°F (14.3°C) at night.Humidity
The most humid month is May, with an average relative humidity of 78%.Rainfall
The month with the most rainfall is May, when the rain falls for 16.9 days and typically aggregates up to 3.58" (91mm) of precipitation.Snowfall
In Webster Groves, snow does not fall in April through October.Daylight
The average length of the day in May is 14h and 17min.On the first day of the month, sunrise is at 6:03 am and sunset at 7:53 pm. On the last day of May, sunrise is at 5:38 am and sunset at 8:19 pm CDT.
Sunshine
In May, the average sunshine is 9.5h.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for ordinary individuals.Note: In May, a regular UV index of 6 translates into these guidelines:
Fend off overexposure. Sun protection is vital. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in May?
What is the most humid month?
What is the average humidity in May?
What is the rainiest month?
How many days does it rain in May in Webster Groves?
When it does not snow?
What is the average length of the day in May?
When are sunrise and sunset in May?
How long on average sun shines in May?
What is the month with the highest UV index?
How high is the UV index in May?
Average temperature in May
Webster Groves, MO
- Average high temperature in May: 74.8°F
The warmest month (with the highest average high temperature) is July (86.9°F).
The month with the lowest average high temperature is January (37.8°F).
- Average low temperature in May: 57.7°F
The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in May
Webster Groves, 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
Webster Groves, MO
- Average wind speed in May: 7.2mph
The windiest month (with the highest average wind speed) is January (9.2mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).
Average humidity in May
Webster Groves, MO
- Average humidity in May: 78%
The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is October (70%).
Average rainfall in May
Webster Groves, MO
- Average rainfall in May: 3.58"
The wettest month (with the highest rainfall) is May (3.58").
The driest month (with the least rainfall) is February (1.69").
Average rainfall days in May
Webster Groves, MO
- Average rainfall days in May: 16.9 days
The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is January (6.5 days).
Average snowfall in May
Webster Groves, MO
- Average snowfall in May: 0"
The month with the highest snowfall is February (2.6").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in May
Webster Groves, MO
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (5.2 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in May /
Average sunshine in May
Webster Groves, 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 36min).
Average sunshine days in May
Webster Groves, MO
- Average sunshine days in May: 11.5 days
The month with the most sunshine days is January (21 days).
The month with the least sunshine days is June (11.2 days).
Average UV index in May
Webster Groves, 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
Webster Groves, 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
Webster Groves, 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).
Webster Groves, Missouri, USA
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