May weather forecastSaint Louis, OK
May
Weather in May
May, the last month of the spring in Saint Louis, is a warm month, with an average temperature varying between 76.8°F (24.9°C) and 59.7°F (15.4°C).Temperature
A slight uplift of average high-temperatures is noted in May, with temperatures adjusting from an agreeable 70.3°F (21.3°C) in April to a warm 76.8°F (24.9°C). May brings Saint Louis a consistent average low-temperature of 59.7°F (15.4°C).Humidity
With an average relative humidity of 79%, May is the most humid month.Rainfall
The month with the most rainfall in Saint Louis is May, when the rain falls for 12.4 days and typically aggregates up to 2.6" (66mm) of precipitation.Snowfall
In Saint Louis, snow does not fall in May through October.Daylight
In May, the average length of the day is 14h and 1min.On the first day of May, sunrise is at 6:35 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 6:14 am and sunset at 8:36 pm CDT.
Sunshine
In Saint Louis, the average sunshine in May is 8.8h.UV index
In Saint Louis, the average daily maximum UV index in May is 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for average individuals.Note: In May, a daily UV index of 6 turns into the following recommendations:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Saint Louis, OK
- Average high temperature in May: 76.8°F
The warmest month (with the highest average high temperature) is August (92.5°F).
The month with the lowest average high temperature is January (49.3°F).
- Average low temperature in May: 59.7°F
The month with the highest average low temperature is July (72.7°F).
The coldest month (with the lowest average low temperature) is January (33.4°F).
Average pressure in May
Saint Louis, OK
- Average pressure in May: 29.91"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in May
Saint Louis, OK
- Average wind speed in May: 9.6mph
The windiest months (with the highest average wind speed) are March and April (11.1mph).
The calmest months (with the lowest average wind speed) are July and August (7.5mph).
Average humidity in May
Saint Louis, OK
- Average humidity in May: 79%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is August (63%).
Average rainfall in May
Saint Louis, OK
- Average rainfall in May: 2.6"
The wettest month (with the highest rainfall) is May (2.6").
The driest month (with the least rainfall) is February (0.71").
Average rainfall days in May
Saint Louis, OK
- Average rainfall days in May: 12.4 days
The month with the highest number of rainy days is May (12.4 days).
The month with the least rainy days is January (5.3 days).
Average snowfall in May
Saint Louis, OK
- Average snowfall in May: 0"
The month with the highest snowfall is February (0.75").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Saint Louis, OK
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (1.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Saint Louis, OK
- Average daylight in May: 14h and 0min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in May: 8h and 48min
The month with the most sunshine is August (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days in May
Saint Louis, OK
- Average sunshine days in May: 15.9 days
The month with the most sunshine days is January (24 days).
The months with the least sunshine days are April, May and September (15.9 days).
Average UV index in May
Saint Louis, OK
- Average UV index in May: 6
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in May
Saint Louis, OK
- Average cloud cover in May: 36
The month with the most cloud cover is March (Cloud cover 39).
The month with the least cloud cover is August (Cloud cover 20).
Average visibility in May
Saint Louis, OK
- 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).
