Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
In Iowa, stepping into May brings a gentle temperature nudge, moving slightly up from April's moderately hot 77.5°F (25.3°C) to a still warm 84.7°F (29.3°C). Iowa experiences a nighttime temperature average of 68.4°F (20.2°C) during May.Heat index
May's average heat index is evaluated at a tropical 93.2°F (34°C). Greater safety measures are needed, risk of heat exhaustion and heat cramps is high. Continuous activity might trigger heatstroke.From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'real feel' or 'apparent temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
Humidity
The average relative humidity in May in Iowa is 75%.Rainfall
In Iowa, during May, the rain falls for 13.9 days and regularly aggregates up to 3.19" (81mm) of precipitation. In Iowa, during the entire year, the rain falls for 182.1 days and collects up to 39.25" (997mm) of precipitation.Snowfall
February through November are months without snowfall.Daylight
In Iowa, the average length of the day in May is 13h and 41min.On the first day of May in Iowa, sunrise is at 6:28 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 6:10 am and sunset at 8:08 pm CDT.
Sunshine
In Iowa, the average sunshine in May is 10.3h.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: In May, a regular UV index of 7 translates into these guidelines:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Frequently asked questions
How hot is it in Iowa in May?
What is the average humidity in May in Iowa?
How many days does it rain in May in Iowa?
When it does not snow in Iowa?
How many hours of daylight does Iowa have in May?
What time are sunrise and sunset in May in Iowa?
How long on average sun shines in May in Iowa?
When is the highest UV index in Iowa?
What is the UV index reading in May in Iowa?
Average temperature in May
Iowa, LA
- Average high temperature in May: 84.7°F
The warmest month (with the highest average high temperature) is August (91.4°F).
The month with the lowest average high temperature is January (59.4°F).
- Average low temperature in May: 68.4°F
The month with the highest average low temperature is July (75.7°F).
The coldest month (with the lowest average low temperature) is January (44.4°F).
Average pressure in May
Iowa, LA
- Average pressure in May: 29.96"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June and August (29.94"Hg).
Average wind speed in May
Iowa, LA
- Average wind speed in May: 8.1mph
The windiest month (with the highest average wind speed) is April (9.3mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in May
Iowa, LA
- Average humidity in May: 75%
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is October (72%).
Average rainfall in May
Iowa, LA
- Average rainfall in May: 3.19"
The wettest month (with the highest rainfall) is August (5.75").
The driest month (with the least rainfall) is February (2.32").
Average rainfall days in May
Iowa, LA
- Average rainfall days in May: 13.9 days
The month with the highest number of rainy days is August (22.2 days).
The month with the least rainy days is November (10.1 days).
Average snowfall in May
Iowa, LA
- Average snowfall in May: 0"
The month with the highest snowfall is January (0.2").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0").
Average snowfall days in May
Iowa, LA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in May /
Average sunshine in May
Iowa, LA
- Average daylight in May: 13h and 4min
The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).
- Average sunshine in May: 10h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days in May
Iowa, LA
- Average sunshine days in May: 14.3 days
The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is August (7.3 days).
Average UV index in May
Iowa, LA
- Average UV index in May: 7
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in May
Iowa, LA
- Average cloud cover in May: 30
The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is October (Cloud cover 25).
Average visibility in May
Iowa, LA
- 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).
Iowa, Louisiana, USA
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