May weather forecastIonia, IA
May
Weather in May
The last month of the spring, May, is a comfortable month in Ionia, Iowa, with an average temperature fluctuating between 66.6°F (19.2°C) and 50°F (10°C).Temperature
The shift into May is accompanied by a temperature increase, with the average high-temperature rising from a cool 54.5°F (12.5°C) in April to a refreshing 66.6°F (19.2°C). In Ionia, in May, the average low-temperature is a cool 50°F (10°C).Humidity
In Ionia, the average relative humidity in May is 77%.Rainfall
In May, in Ionia, the rain falls for 14.3 days. Throughout May, 1.38" (35mm) of precipitation is accumulated. Throughout the year, in Ionia, there are 98 rainfall days, and 9.8" (249mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows in Ionia, Iowa. During 0.3 snowfall days, in May, Ionia aggregates 0.04" (1mm) of snow. In Ionia, Iowa, during the entire year, snow falls for 36.8 days and aggregates up to 6.22" (158mm) of snow.Daylight
In Ionia, the average length of the day in May is 14h and 41min.On the first day of the month, sunrise is at 6:02 am and sunset at 8:11 pm. On the last day of May, sunrise is at 5:33 am and sunset at 8:41 pm CDT.
Sunshine
The average sunshine in May in Ionia is 8.4h.UV index
In Ionia, the average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: An average maximum UV index of 5 in May leads to these recommendations:
Guard yourself - An obligation to protect skin and eyes from harm exists. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Ionia, IA
- Average high temperature in May: 66.6°F
The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is January (22.5°F).
- Average low temperature in May: 50°F
The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (10.6°F).
Average pressure in May
Ionia, IA
- Average pressure in May: 29.94"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in May
Ionia, IA
- Average wind speed in May: 9.3mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (7.2mph).
Average humidity in May
Ionia, IA
- Average humidity in May: 77%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is October (73%).
Average rainfall in May
Ionia, IA
- Average rainfall in May: 1.38"
The wettest month (with the highest rainfall) is June (1.5").
The driest month (with the least rainfall) is January (0.31").
Average rainfall days in May
Ionia, IA
- Average rainfall days in May: 14.3 days
The month with the highest number of rainy days is June (14.5 days).
The month with the least rainy days is February (2 days).
Average snowfall in May
Ionia, IA
- Average snowfall in May: 0.04"
The month with the highest snowfall is February (1.85").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Ionia, IA
- Average snowfall days in May: 0.3 days
The month with the highest number of snowfall days is January (9.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Ionia, IA
- Average daylight in May: 14h and 42min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in May: 8h and 24min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in May
Ionia, IA
- Average sunshine days in May: 13.9 days
The month with the most sunshine days is November (22 days).
The month with the least sunshine days is June (13.3 days).
Average UV index in May
Ionia, IA
- Average UV index in May: 5
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in May
Ionia, IA
- Average cloud cover in May: 44
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in May
Ionia, IA
- Average visibility in May: 6mi
The months with the highest visibility are February, March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January and July (5mi).
