May weather forecastSheffield, IA
May
Weather in May
May, the last month of the spring in Sheffield, is a refreshing month, with an average temperature varying between 67.8°F (19.9°C) and 51.6°F (10.9°C).Temperature
With the onset of May, the average high-temperature slightly shifts from April's mild 55.9°F (13.3°C) to a still refreshing 67.8°F (19.9°C). In the month of May, Sheffield experiences an average low-temperature of 51.6°F (10.9°C).Humidity
In May, the average relative humidity is 75%.Rainfall
In Sheffield, in May, it is raining for 19.4 days, with typically 4.25" (108mm) of accumulated precipitation. Throughout the year, there are 146.2 rainfall days, and 29.69" (754mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows in Sheffield. During 0.2 snowfall days, in May, Sheffield aggregates 0.39" (10mm) of snow. Throughout the year, there are 56 snowfall days, and 24.45" (621mm) of snow is accumulated.Daylight
In May, the average length of the day is 14h and 40min.On the first day of the month, sunrise is at 6:05 am and sunset at 8:14 pm. On the last day of May, in Sheffield, sunrise is at 5:36 am and sunset at 8:44 pm CDT.
Sunshine
In May, the average sunshine is 8.5h.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: The average daily UV index of 5 in May transforms into the following instructions:
Undertake protective steps - Preventing sun damage is advised. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Sheffield, IA
- Average high temperature in May: 67.8°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (23.4°F).
- Average low temperature in May: 51.6°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (10.9°F).
Average pressure in May
Sheffield, IA
- Average pressure in May: 29.93"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in May
Sheffield, IA
- Average wind speed in May: 9.4mph
The windiest months (with the highest average wind speed) are January and April (10.9mph).
The calmest months (with the lowest average wind speed) are July and August (7.2mph).
Average humidity in May
Sheffield, IA
- Average humidity in May: 75%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is October (71%).
Average rainfall in May
Sheffield, IA
- Average rainfall in May: 4.25"
The wettest month (with the highest rainfall) is June (4.69").
The driest month (with the least rainfall) is January (1.1").
Average rainfall days in May
Sheffield, IA
- Average rainfall days in May: 19.4 days
The month with the highest number of rainy days is June (20.2 days).
The month with the least rainy days is February (4 days).
Average snowfall in May
Sheffield, IA
- Average snowfall in May: 0.39"
The month with the highest snowfall is February (6.42").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Sheffield, IA
- Average snowfall days in May: 0.2 days
The month with the highest number of snowfall days is January (13.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Sheffield, 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 30min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in May
Sheffield, IA
- Average sunshine days in May: 9.7 days
The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is June (7.8 days).
Average UV index in May
Sheffield, IA
- Average UV index in May: 5
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in May
Sheffield, IA
- Average cloud cover in May: 43
The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are August and September (Cloud cover 31).
Average visibility in May
Sheffield, IA
- Average visibility in May: 6mi
The months with the highest visibility are March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, February, July and August (5mi).
