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
As Shelby enters May, the average high-temperature increases from the a refreshing 59.9°F (15.5°C) of April to a pleasant 70.3°F (21.3°C). Shelby reports a consistent average low-temperature of 53.4°F (11.9°C) throughout May nights.Humidity
In May, the average relative humidity in Shelby is 74%.Rainfall
In Shelby, Iowa, in May, during 17.1 rainfall days, 4.06" (103mm) of precipitation is typically accumulated. Throughout the year, in Shelby, there are 127.7 rainfall days, and 26.57" (675mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Shelby. May is the last month it regularly snows in Shelby. During 0.3 snowfall days, in May, Shelby aggregates 0.16" (4mm) of snow. Throughout the year, there are 35.8 snowfall days, and 13.82" (351mm) of snow is accumulated.Daylight
In May, the average length of the day is 14h and 32min.On the first day of the month, sunrise is at 6:17 am and sunset at 8:20 pm. On the last day of May, sunrise is at 5:50 am and sunset at 8:48 pm CDT.
Sunshine
The average sunshine in May in Shelby is 8.8h.UV index
In May, the average daily maximum UV index in Shelby is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A daily high UV index of 5 in May leads to these guidelines:
Prioritize safety - Recommendations to avert sunburn are shared. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average May temperature in Shelby?
What is the average humidity in May in Shelby?
How much does it rain in Shelby in May?
What is the last month it snows in Shelby?
What is the average length of the day in May in Shelby?
When are sunrise and sunset in May in Shelby?
How long on average sun shines in May in Shelby?
What is the UV index intensity in May in Shelby?
Average temperature in May
Shelby, IA
- Average high temperature in May: 70.3°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in May: 53.4°F
The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (15.4°F).
Average pressure in May
Shelby, IA
- Average pressure in May: 29.92"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
Shelby, IA
- Average wind speed in May: 9.1mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is July (7mph).
Average humidity in May
Shelby, IA
- Average humidity in May: 74%
The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is October (68%).
Average rainfall in May
Shelby, IA
- Average rainfall in May: 4.06"
The wettest month (with the highest rainfall) is June (4.37").
The driest month (with the least rainfall) is January (0.87").
Average rainfall days in May
Shelby, IA
- Average rainfall days in May: 17.1 days
The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is February (3.6 days).
Average snowfall in May
Shelby, IA
- Average snowfall in May: 0.16"
The month with the highest snowfall is February (3.7").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Shelby, IA
- Average snowfall days in May: 0.3 days
The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Shelby, IA
- Average daylight in May: 14h and 3min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in May: 8h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days in May
Shelby, IA
- Average sunshine days in May: 11.7 days
The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is June (11 days).
Average UV index in May
Shelby, IA
- Average UV index in May: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in May
Shelby, IA
- Average cloud cover in May: 40
The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in May
Shelby, 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).
Shelby, Iowa, USA
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