May weather forecastSaint Marys, KS
May
Weather in May
The last month of the spring, May, is an agreeable month in Saint Marys, Kansas, with an average temperature varying between 55.4°F (13°C) and 73°F (22.8°C).Temperature
A soft shift in the average high-temperature is noticeable in May, transitioning from an enjoyable 64.4°F (18°C) in April to a pleasant 73°F (22.8°C). Saint Marys experiences an average nighttime temperature of 55.4°F (13°C) in the month of May.Humidity
The months with the highest humidity are May and June, with an average relative humidity of 76%.Rainfall
The month with the most rainfall is May, when the rain falls for 15.2 days and typically aggregates up to 3.19" (81mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
The average length of the day in May in Saint Marys is 14h and 20min.On the first day of May, sunrise is at 6:24 am and sunset at 8:17 pm. On the last day of the month, sunrise is at 5:59 am and sunset at 8:44 pm CDT.
Sunshine
The average sunshine in May is 9h.UV index
In May, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for average individuals.Note: In May, a regular UV index of 6 translates into these guidelines:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun 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 Marys, KS
- Average high temperature in May: 73°F
The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (37.4°F).
- Average low temperature in May: 55.4°F
The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).
Average pressure in May
Saint Marys, KS
- 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 (29.86"Hg).
Average wind speed in May
Saint Marys, KS
- Average wind speed in May: 9.4mph
The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.6mph).
Average humidity in May
Saint Marys, KS
- Average humidity in May: 76%
The months with the highest relative humidity are May and June (76%).
The month with the lowest relative humidity is October (66%).
Average rainfall in May
Saint Marys, KS
- Average rainfall in May: 3.19"
The wettest month (with the highest rainfall) is May (3.19").
The driest months (with the least rainfall) are January and December (0.55").
Average rainfall days in May
Saint Marys, KS
- Average rainfall days in May: 15.2 days
The month with the highest number of rainy days is May (15.2 days).
The month with the least rainy days is January (3.5 days).
Average snowfall in May
Saint Marys, KS
- Average snowfall in May: 0"
The month with the highest snowfall is February (1.77").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Saint Marys, KS
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (4.9 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 Marys, KS
- Average daylight in May: 14h and 18min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in May: 9h and 0min
The months with the most sunshine are June and July (Average sunshine: 10h and 42min).
The months with the least sunshine are January and December (Average sunshine: 5h and 36min).
Average sunshine days in May
Saint Marys, KS
- Average sunshine days in May: 13.4 days
The month with the most sunshine days is December (23.6 days).
The month with the least sunshine days is May (13.4 days).
Average UV index in May
Saint Marys, KS
- Average UV index in May: 6
The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in May
Saint Marys, KS
- Average cloud cover in May: 38
The month with the most cloud cover is March (Cloud cover 43).
The month with the least cloud cover is July (Cloud cover 24).
Average visibility in May
Saint Marys, KS
- 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).





