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
An increase in the average high-temperature marks May, surging from April's cool 50.4°F (10.2°C) to a comfortable 64.8°F (18.2°C). In May, Grantsburg experiences an average nighttime temperature of 46°F (7.8°C).Humidity
April and May, with an average relative humidity of 74%, are the least humid months in Grantsburg.Rainfall
In Grantsburg, Wisconsin, in May, it is raining for 14.6 days, with typically 2.87" (73mm) of accumulated precipitation. Throughout the year, in Grantsburg, Wisconsin, there are 124.6 rainfall days, and 21.65" (550mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows in Grantsburg. During 0.8 snowfall days, in May, Grantsburg aggregates 0.47" (12mm) of snow. In Grantsburg, Wisconsin, during the entire year, snow falls for 70.6 days and aggregates up to 23.9" (607mm) of snow.Daylight
The average length of the day in May is 14h and 57min.On the first day of the month, sunrise is at 5:56 am and sunset at 8:18 pm. On the last day of May, sunrise is at 5:24 am and sunset at 8:52 pm CDT.
Sunshine
The average sunshine in May in Grantsburg is 8.6h.UV index
In Grantsburg, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.Note: The average daily UV index of 5 in May transforms into the following instructions:
Take precautions - Protection against skin and eye damage is obliged. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Frequently asked questions
What are the temperatures in Grantsburg in May?
What are the least humid months in Grantsburg?
What is the average humidity in May in Grantsburg?
How many days does it rain in May in Grantsburg?
What is the last month it snows in Grantsburg?
What is the average length of the day in May in Grantsburg?
When is the sunrise / sunset in May in Grantsburg?
How many hours of sunshine does Grantsburg have in May?
What is the UV index reading in May in Grantsburg?
Average temperature in May
Grantsburg, WI
- Average high temperature in May: 64.8°F
The warmest month (with the highest average high temperature) is July (78.8°F).
The month with the lowest average high temperature is January (18°F).
- Average low temperature in May: 46°F
The month with the highest average low temperature is July (59.7°F).
The coldest month (with the lowest average low temperature) is January (4.8°F).
Average pressure in May
Grantsburg, WI
- Average pressure in May: 29.94"Hg
The month with the highest atmospheric pressure is February (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in May
Grantsburg, WI
- Average wind speed in May: 8.2mph
The windiest month (with the highest average wind speed) is April (9.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.7mph).
Average humidity in May
Grantsburg, WI
- Average humidity in May: 74%
The month with the highest relative humidity is January (91%).
The months with the lowest relative humidity are April and May (74%).
Average rainfall in May
Grantsburg, WI
- Average rainfall in May: 2.87"
The wettest month (with the highest rainfall) is June (3.39").
The driest month (with the least rainfall) is January (0.55").
Average rainfall days in May
Grantsburg, WI
- Average rainfall days in May: 14.6 days
The month with the highest number of rainy days is June (16.7 days).
The month with the least rainy days is January (2.8 days).
Average snowfall in May
Grantsburg, WI
- Average snowfall in May: 0.47"
The month with the highest snowfall is December (5.75").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Grantsburg, WI
- Average snowfall days in May: 0.8 days
The month with the highest number of snowfall days is January (15.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Grantsburg, WI
- Average daylight in May: 15h and 0min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in May: 8h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).
Average sunshine days in May
Grantsburg, WI
- Average sunshine days in May: 13.4 days
The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is June (10.1 days).
Average UV index in May
Grantsburg, WI
- Average UV index in May: 5
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in May
Grantsburg, WI
- Average cloud cover in May: 43
The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in May
Grantsburg, WI
- Average visibility in May: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).
Grantsburg, Wisconsin, USA
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