May weather forecastKellerton, IA
May
Weather in May
The last month of the spring, May, is an agreeable month in Kellerton, Iowa, with an average temperature ranging between min 53.1°F (11.7°C) and max 69.6°F (20.9°C).Temperature
The arrival of May brings a temperature shift, with the average high-temperature escalating from a moderate 60.4°F (15.8°C) in April to an agreeable 69.6°F (20.9°C). In Kellerton, May nights cool down to an average of 53.1°F (11.7°C).Humidity
The average relative humidity in May is 80%.Rainfall
In Kellerton, during May, the rain falls for 17.8 days and regularly aggregates up to 3.46" (88mm) of precipitation. Throughout the year, there are 126.9 rainfall days, and 22.6" (574mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.2 snowfall days, in May, Kellerton aggregates 0.24" (6mm) of snow. In Kellerton, during the entire year, snow falls for 28.7 days and aggregates up to 11.85" (301mm) of snow.Daylight
The average length of the day in May in Kellerton is 14h and 28min.On the first day of the month, sunrise is at 6:13 am and sunset at 8:12 pm. On the last day of May, in Kellerton, sunrise is at 5:47 am and sunset at 8:40 pm CDT.
Sunshine
The average sunshine in May is 8.5h.UV index
In May, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The maximum daily UV index, 5 in May, converts into the following recommendations:
Undertake protective steps - Preventing sun damage is advised. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Kellerton, IA
- Average high temperature in May: 69.6°F
The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (30.6°F).
- Average low temperature in May: 53.1°F
The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (16.9°F).
Average pressure in May
Kellerton, IA
- Average pressure in May: 29.93"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in May
Kellerton, IA
- Average wind speed in May: 8.5mph
The windiest months (with the highest average wind speed) are January, February and March (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity in May
Kellerton, IA
- Average humidity in May: 80%
The month with the highest relative humidity is June (82%).
The month with the lowest relative humidity is October (71%).
Average rainfall in May
Kellerton, IA
- Average rainfall in May: 3.46"
The wettest month (with the highest rainfall) is June (3.86").
The driest months (with the least rainfall) are February and December (0.71").
Average rainfall days in May
Kellerton, IA
- Average rainfall days in May: 17.8 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is January (4.1 days).
Average snowfall in May
Kellerton, IA
- Average snowfall in May: 0.24"
The month with the highest snowfall is January (3.54").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Kellerton, IA
- Average snowfall days in May: 0.2 days
The month with the highest number of snowfall days is January (8.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Kellerton, IA
- Average daylight in May: 14h and 30min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in May: 8h and 30min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days in May
Kellerton, IA
- Average sunshine days in May: 10.6 days
The month with the most sunshine days is November (21.2 days).
The month with the least sunshine days is May (10.6 days).
Average UV index in May
Kellerton, IA
- Average UV index in May: 5
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in May
Kellerton, IA
- Average cloud cover in May: 42
The month with the most cloud cover is January (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in May
Kellerton, IA
- 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).





