May weather forecastPorterfield, WI
May
Weather in May
The last month of the spring, May, is a mild month in Porterfield, Wisconsin, with an average temperature ranging between min 44.1°F (6.7°C) and max 58.3°F (14.6°C).Temperature
Porterfield, Wisconsin, in May shows a temperature shift, moving from an average high of a frosty 46.2°F (7.9°C) in April to a refreshing 58.3°F (14.6°C). Porterfield throughout May, records an average low-temperature of 44.1°F (6.7°C).Humidity
In May, the average relative humidity in Porterfield is 77%.Rainfall
The wettest months in Porterfield are May, June and October, with an average 2.8" (71mm) of rainfall.Snowfall
Months with snowfall in Porterfield are January through May, October through December. May is the last month it regularly snows in Porterfield. During 0.2 snowfall days, in May, Porterfield aggregates 0.12" (3mm) of snow. In Porterfield, during the entire year, snow falls for 56.9 days and aggregates up to 20.63" (524mm) of snow.Daylight
In May, the average length of the day in Porterfield is 14h and 53min.On the first day of May in Porterfield, sunrise is at 5:38 am and sunset at 7:57 pm. On the last day of the month, sunrise is at 5:07 am and sunset at 8:30 pm CDT.
Sunshine
In Porterfield, the average sunshine in May is 8.9h.UV index
In May, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: The maximum daily UV index of 4 during May translates into the following directions:
Ensure safety - Imperative it is to shield skin and eyes from damage. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Porterfield, WI
- Average high temperature in May: 58.3°F
The warmest month (with the highest average high temperature) is August (74.5°F).
The month with the lowest average high temperature is January (23.5°F).
- Average low temperature in May: 44.1°F
The months with the highest average low temperature are July and August (59.9°F).
The coldest month (with the lowest average low temperature) is January (14.4°F).
Average pressure in May
Porterfield, WI
- Average pressure in May: 29.97"Hg
The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in May
Porterfield, WI
- Average wind speed in May: 8.9mph
The windiest months (with the highest average wind speed) are November and December (10.9mph).
The calmest month (with the lowest average wind speed) is July (7.6mph).
Average humidity in May
Porterfield, WI
- Average humidity in May: 77%
The month with the highest relative humidity is January (87%).
The months with the lowest relative humidity are April and November (76%).
Average rainfall in May
Porterfield, WI
- Average rainfall in May: 2.8"
The wettest months (with the highest rainfall) are May, June and October (2.8").
The driest month (with the least rainfall) is January (1.06").
Average rainfall days in May
Porterfield, WI
- Average rainfall days in May: 15.5 days
The month with the highest number of rainy days is May (15.5 days).
The month with the least rainy days is February (4.1 days).
Average snowfall in May
Porterfield, WI
- Average snowfall in May: 0.12"
The month with the highest snowfall is February (5.39").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Porterfield, WI
- Average snowfall days in May: 0.2 days
The months with the highest number of snowfall days are January and February (12.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Porterfield, WI
- Average daylight in May: 14h and 54min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in May: 8h and 54min
The months with the most sunshine are July and August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 3h and 18min).
Average sunshine days in May
Porterfield, WI
- Average sunshine days in May: 13.6 days
The month with the most sunshine days is November (16.6 days).
The month with the least sunshine days is April (12.4 days).
Average UV index in May
Porterfield, WI
- Average UV index in May: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in May
Porterfield, WI
- Average cloud cover in May: 41
The month with the most cloud cover is February (Cloud cover 65).
The months with the least cloud cover are July and August (Cloud cover 30).
Average visibility in May
Porterfield, WI
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
