May weather forecastCape Girardeau, MO

May
Weather in May
May marks the commencement of summer in Cape Girardeau. With temperatures now hitting highs at 76.3°F (24.6°C) and lows at a mild 59°F (15°C), the city starts to heat up. The average rainfall slightly dips to 3.98" (101mm) from the preceding month. Locals and tourists spend their time bathing in the sun and exploring the natural beauty of the city. As the days stretch, it adds more time to enjoy local events and attractions.Temperature
With the onset of May, Cape Girardeau's average high-temperature sees a rise, moving from April's refreshing 67.1°F (19.5°C) to a warm 76.3°F (24.6°C). During the month of May, the nighttime temperature falls to an average of 59°F (15°C).Humidity
March and May, with an average relative humidity of 78%, are the most humid months in Cape Girardeau.Rainfall
In May, in Cape Girardeau, the rain falls for 16.8 days. Throughout May, 3.98" (101mm) of precipitation is accumulated. Throughout the year, there are 158.6 rainfall days, and 35.59" (904mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall.Daylight
In May, the average length of the day in Cape Girardeau is 14h and 11min.On the first day of the month, sunrise is at 6:02 am and sunset at 7:48 pm. On the last day of May, in Cape Girardeau, sunrise is at 5:39 am and sunset at 8:12 pm CDT.
Sunshine
In Cape Girardeau, the average sunshine in May is 9.3h.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the average person.Note: In May, the maximum UV index of 6 translates into these guidelines:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. 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. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Cape Girardeau, MO
- Average high temperature in May: 76.3°F
The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (41°F).
- Average low temperature in May: 59°F
The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (27.9°F).
Average pressure in May
Cape Girardeau, MO
- Average pressure in May: 29.97"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in May
Cape Girardeau, MO
- Average wind speed in May: 7.5mph
The windiest months (with the highest average wind speed) are January and February (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity in May
Cape Girardeau, MO
- Average humidity in May: 78%
The months with the highest relative humidity are March and May (78%).
The month with the lowest relative humidity is October (69%).
Average rainfall in May
Cape Girardeau, MO
- Average rainfall in May: 3.98"
The wettest month (with the highest rainfall) is April (4.33").
The driest month (with the least rainfall) is September (1.5").
Average rainfall days in May
Cape Girardeau, MO
- Average rainfall days in May: 16.8 days
The month with the highest number of rainy days is July (17 days).
The month with the least rainy days is January (9.8 days).
Average snowfall in May
Cape Girardeau, MO
- Average snowfall in May: 0"
The month with the highest snowfall is February (2.17").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Cape Girardeau, MO
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (3.7 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
Cape Girardeau, MO
- Average daylight in May: 14h and 12min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in May: 9h and 18min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in May
Cape Girardeau, MO
- Average sunshine days in May: 12.3 days
The month with the most sunshine days is October (18.6 days).
The month with the least sunshine days is July (11.9 days).
Average UV index in May
Cape Girardeau, 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
Cape Girardeau, MO
- Average cloud cover in May: 37
The month with the most cloud cover is February (Cloud cover 48).
The months with the least cloud cover are June, August and September (Cloud cover 27).
Average visibility in May
Cape Girardeau, 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).





