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
May's arrival sees a rise in the average high-temperature, jumping from April's 56.1°F (13.4°C) to a still refreshing 67.8°F (19.9°C). During the month of May, an average low-temperature of 51.4°F (10.8°C) is recorded in Shell Rock, Iowa.Humidity
The average relative humidity in May is 77%.Rainfall
In May, in Shell Rock, Iowa, the rain falls for 18.7 days. Throughout May, 4.17" (106mm) of precipitation is accumulated. In Shell Rock, during the entire year, the rain falls for 138.7 days and collects up to 28.78" (731mm) of precipitation.Snowfall
Months with snowfall in Shell Rock are January through May, October through December. May is the last month it regularly snows. During 0.2 snowfall days, in May, Shell Rock aggregates 0.2" (5mm) of snow. Throughout the year, there are 43.6 snowfall days, and 19.25" (489mm) of snow is accumulated.Daylight
In Shell Rock, the average length of the day in May is 14h and 39min.On the first day of the month, sunrise is at 6:03 am and sunset at 8:11 pm. On the last day of May, sunrise is at 5:34 am and sunset at 8:41 pm CDT.
Sunshine
In May, the average sunshine is 8.5h.UV index
In Shell Rock, Iowa, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum UV index of 5 during May leads to these instructions:
Be vigilant - A duty to shield skin and eyes from injury exists. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Experience reduced UV exposure by about half when donning a wide-brim hat. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average May temperature in Shell Rock?
What is the average humidity in May in Shell Rock?
How much does it rain in Shell Rock in May?
What is the last month it snows in Shell Rock?
How many hours of daylight does Shell Rock have in May?
When are sunrise and sunset in May in Shell Rock?
How many hours of sunshine does Shell Rock have in May?
What is the UV index intensity in May in Shell Rock?
Average temperature in May
Shell Rock, IA
- Average high temperature in May: 67.8°F
The warmest month (with the highest average high temperature) is July (79.5°F).
The month with the lowest average high temperature is January (23.9°F).
- Average low temperature in May: 51.4°F
The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (11.3°F).
Average pressure in May
Shell Rock, 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
Shell Rock, IA
- Average wind speed in May: 9.2mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is August (7mph).
Average humidity in May
Shell Rock, IA
- Average humidity in May: 77%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (72%).
Average rainfall in May
Shell Rock, IA
- Average rainfall in May: 4.17"
The wettest month (with the highest rainfall) is June (4.29").
The driest month (with the least rainfall) is January (1.02").
Average rainfall days in May
Shell Rock, IA
- Average rainfall days in May: 18.7 days
The month with the highest number of rainy days is June (19.4 days).
The month with the least rainy days is February (3.9 days).
Average snowfall in May
Shell Rock, IA
- Average snowfall in May: 0.2"
The month with the highest snowfall is February (5.08").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Shell Rock, IA
- Average snowfall days in May: 0.2 days
The month with the highest number of snowfall days is January (10.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Shell Rock, 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 3min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in May
Shell Rock, IA
- Average sunshine days in May: 10.3 days
The months with the most sunshine days are October and November (17.8 days).
The month with the least sunshine days is June (9.2 days).
Average UV index in May
Shell Rock, 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 and December (UV index 1).
Average cloud cover in May
Shell Rock, IA
- Average cloud cover in May: 43
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in May
Shell Rock, IA
- Average visibility in May: 6mi
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
Shell Rock, Iowa, USA
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