May weather forecastPolk, MO
May
Weather in May
May, the last month of the spring in Polk, is a moderately hot month, with an average temperature varying between 56.7°F (13.7°C) and 75.6°F (24.2°C).Temperature
May's arrival signals an increase in average high-temperatures, moving from April's enjoyable 66.4°F (19.1°C) to a moderately hot 75.6°F (24.2°C). During the nights in May, Polk experiences a consistent average temperature of 56.7°F (13.7°C).Humidity
With an average relative humidity of 78%, May is the most humid month.Rainfall
May is the month with the most rainfall in Polk. Rain falls for 17.4 days and accumulates 5.28" (134mm) of precipitation.Snowfall
January through May, November and December are months with snowfall. May is the last month it regularly snows in Polk. During 0.1 snowfall days, in May, Polk aggregates 0.16" (4mm) of snow. Throughout the year, there are 18.4 snowfall days, and 8.35" (212mm) of snow is accumulated.Daylight
In May, the average length of the day is 14h and 13min.On the first day of May, sunrise is at 6:16 am and sunset at 8:03 pm. On the last day of the month, sunrise is at 5:53 am and sunset at 8:28 pm CDT.
Sunshine
The average sunshine in May is 9.1h.UV index
In Polk, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: A maximum UV index of 5 in May translates into the following recommendations:
Put precautions into practice - Ensuring skin and eye safety is a necessity. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. To cut down UV radiation exposure by about half, sport a wide-brim hat. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Polk, MO
- Average high temperature in May: 75.6°F
The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is January (41°F).
- Average low temperature in May: 56.7°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 (25.5°F).
Average pressure in May
Polk, MO
- Average pressure in May: 29.95"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The months with the lowest atmospheric pressure are April and June (29.93"Hg).
Average wind speed in May
Polk, MO
- Average wind speed in May: 8.3mph
The windiest month (with the highest average wind speed) is March (10.1mph).
The calmest month (with the lowest average wind speed) is July (6.4mph).
Average humidity in May
Polk, 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 (72%).
Average rainfall in May
Polk, MO
- Average rainfall in May: 5.28"
The wettest month (with the highest rainfall) is May (5.28").
The driest months (with the least rainfall) are January and December (1.57").
Average rainfall days in May
Polk, MO
- Average rainfall days in May: 17.4 days
The month with the highest number of rainy days is May (17.4 days).
The months with the least rainy days are January and December (6.9 days).
Average snowfall in May
Polk, MO
- Average snowfall in May: 0.16"
The month with the highest snowfall is February (2.64").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in May
Polk, MO
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is February (6.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Polk, 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 6min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).
Average sunshine days in May
Polk, MO
- Average sunshine days in May: 11.1 days
The month with the most sunshine days is December (20.5 days).
The month with the least sunshine days is May (11.1 days).
Average UV index in May
Polk, MO
- Average UV index in May: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in May
Polk, MO
- Average cloud cover in May: 38
The month with the most cloud cover is March (Cloud cover 47).
The months with the least cloud cover are June, July and August (Cloud cover 27).
Average visibility in May
Polk, 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).





