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 Storm Lake, the average high-temperature in May rises, from a mild 57.2°F (14°C) in April, to a pleasant 68.9°F (20.5°C). Storm Lake, during May nights, observes an average temperature of 52.3°F (11.3°C).Humidity
The average relative humidity in May in Storm Lake is 69%.Rainfall
In May, in Storm Lake, the rain falls for 18.7 days. Throughout May, 3.9" (99mm) of precipitation is accumulated. In Storm Lake, during the entire year, the rain falls for 135.1 days and collects up to 26.73" (679mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.3 snowfall days, in May, Storm Lake aggregates 0.28" (7mm) of snow. In Storm Lake, during the entire year, snow falls for 50 days and aggregates up to 20.04" (509mm) of snow.Daylight
In Storm Lake, the average length of the day in May is 14h and 38min.On the first day of the month, sunrise is at 6:14 am and sunset at 8:21 pm. On the last day of May, in Storm Lake, sunrise is at 5:45 am and sunset at 8:51 pm CDT.
Sunshine
The average sunshine in May in Storm Lake, Iowa, is 8.7h.UV index
The average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: A maximum UV index of 5 in May translates into the following recommendations:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May in Storm Lake?
What is the average humidity in May in Storm Lake?
How much does it rain in Storm Lake in May?
What is the last month it snows in Storm Lake?
How many hours of daylight does Storm Lake have in May?
What time are sunrise and sunset in May in Storm Lake?
How long on average sun shines in May in Storm Lake?
What is the UV index reading in May in Storm Lake?
Average temperature in May
Storm Lake, IA
- Average high temperature in May: 68.9°F
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (24.6°F).
- Average low temperature in May: 52.3°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (12.6°F).
Average pressure in May
Storm Lake, 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 (29.87"Hg).
Average wind speed in May
Storm Lake, IA
- Average wind speed in May: 9.6mph
The windiest months (with the highest average wind speed) are January and April (11.2mph).
The calmest month (with the lowest average wind speed) is July (7.5mph).
Average humidity in May
Storm Lake, IA
- Average humidity in May: 69%
The month with the highest relative humidity is January (85%).
The months with the lowest relative humidity are April and October (68%).
Average rainfall in May
Storm Lake, IA
- Average rainfall in May: 3.9"
The wettest month (with the highest rainfall) is June (4.02").
The driest month (with the least rainfall) is January (0.91").
Average rainfall days in May
Storm Lake, IA
- Average rainfall days in May: 18.7 days
The month with the highest number of rainy days is June (19 days).
The month with the least rainy days is February (3.7 days).
Average snowfall in May
Storm Lake, IA
- Average snowfall in May: 0.28"
The month with the highest snowfall is February (5.79").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Storm Lake, IA
- Average snowfall days in May: 0.3 days
The month with the highest number of snowfall days is January (12.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Storm Lake, IA
- Average daylight in May: 14h and 4min
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 4min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in May
Storm Lake, IA
- Average sunshine days in May: 9.8 days
The month with the most sunshine days is November (18.8 days).
The month with the least sunshine days is June (8.1 days).
Average UV index in May
Storm Lake, IA
- Average UV index in May: 5
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and February (UV index 1).
Average cloud cover in May
Storm Lake, IA
- Average cloud cover in May: 41
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in May
Storm Lake, IA
- Average visibility in May: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Storm Lake, Iowa, USA
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