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
Affton in May shows a temperature shift, moving from an average high of an enjoyable 65.7°F (18.7°C) in April to a warm 75.4°F (24.1°C). The low-temperature average for Affton during May stands at a mild 57.7°F (14.3°C).Humidity
May is the most humid month, with an average relative humidity of 78%.Rainfall
The month with the most rainfall is May, when the rain falls for 16.8 days and typically aggregates up to 3.94" (100mm) of precipitation.Snowfall
In Affton, Missouri, snow does not fall in April through October.Daylight
In Affton, the average length of the day in May is 14h and 17min.On the first day of May in Affton, sunrise is at 6:03 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 5:38 am and sunset at 8:19 pm CDT.
Sunshine
In Affton, the average sunshine in May is 9.5h.UV index
The months with the highest UV index in Affton are May through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for average individuals.Note: The maximum UV index, 6 during May, leads to the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Frequently asked questions
What are the temperatures in Affton in May?
What is the most humid month in Affton?
What is the average humidity in May in Affton?
What is the rainiest month in Affton?
How much does it rain in Affton in May?
When it does not snow in Affton?
What is the average length of the day in May in Affton?
What time are sunrise and sunset in May in Affton?
How many hours of sunshine does Affton have in May?
When is the highest UV index in Affton?
What is the UV index reading in May in Affton?
Average temperature in May
Affton, MO
- Average high temperature in May: 75.4°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 (37.9°F).
- Average low temperature in May: 57.7°F
The month with the highest average low temperature is July (69.3°F).
The coldest month (with the lowest average low temperature) is January (25°F).
Average pressure in May
Affton, MO
- Average pressure in May: 29.96"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
Affton, MO
- Average wind speed in May: 7.1mph
The windiest month (with the highest average wind speed) is January (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).
Average humidity in May
Affton, 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 (71%).
Average rainfall in May
Affton, MO
- Average rainfall in May: 3.94"
The wettest month (with the highest rainfall) is May (3.94").
The driest months (with the least rainfall) are February and November (1.77").
Average rainfall days in May
Affton, MO
- Average rainfall days in May: 16.8 days
The month with the highest number of rainy days is July (16.9 days).
The months with the least rainy days are January and February (6.8 days).
Average snowfall in May
Affton, 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
Affton, MO
- Average snowfall days in May: 0 days
The months with the highest number of snowfall days are January and February (4.8 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
Affton, 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 month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in May
Affton, MO
- Average sunshine days in May: 12.1 days
The month with the most sunshine days is January (20.9 days).
The month with the least sunshine days is June (11.6 days).
Average UV index in May
Affton, 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
Affton, MO
- Average cloud cover in May: 37
The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in May
Affton, 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).
Affton, Missouri, USA
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