May weather forecastOld Fort, WI
May
Weather in May
The last month of the spring, May, is a refreshing month in Old Fort, Wisconsin, with an average temperature fluctuating between 41.9°F (5.5°C) and 56.5°F (13.6°C).Temperature
The arrival of May brings an increase in high-temperatures, moving from a frosty 43.9°F (6.6°C) in April to a mild 56.5°F (13.6°C). Nightly temperatures drop to an average low of 41.9°F (5.5°C) in May.Humidity
With an average relative humidity of 75%, May is the least humid month.Rainfall
The wettest months in Old Fort are May and July, with an average 2.56" (65mm) of rainfall.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows in Old Fort. During 0.9 snowfall days, in May, Old Fort aggregates 0.91" (23mm) of snow. Throughout the year, there are 95.5 snowfall days, and 33.54" (852mm) of snow is accumulated.Daylight
In Old Fort, the average length of the day in May is 15h and 4min.On the first day of the month, sunrise is at 5:46 am and sunset at 8:13 pm. On the last day of May, sunrise is at 5:12 am and sunset at 8:48 pm CDT.
Sunshine
In May, the average sunshine is 8.9h.UV index
The average daily maximum UV index in May is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: In May, an average UV index of 4 transforms into the following instructions:
Take precautions - Protection against skin and eye damage is obliged. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Old Fort, WI
- Average high temperature in May: 56.5°F
The warmest month (with the highest average high temperature) is August (72.5°F).
The month with the lowest average high temperature is January (20.3°F).
- Average low temperature in May: 41.9°F
The month with the highest average low temperature is August (57.9°F).
The coldest month (with the lowest average low temperature) is January (10.8°F).
Average pressure in May
Old Fort, WI
- Average pressure in May: 29.96"Hg
The month with the highest atmospheric pressure is February (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in May
Old Fort, WI
- Average wind speed in May: 7.6mph
The windiest months (with the highest average wind speed) are January and December (10.6mph).
The calmest month (with the lowest average wind speed) is July (6.9mph).
Average humidity in May
Old Fort, WI
- Average humidity in May: 75%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is May (75%).
Average rainfall in May
Old Fort, WI
- Average rainfall in May: 2.56"
The wettest months (with the highest rainfall) are May and July (2.56").
The driest months (with the least rainfall) are January and February (1.06").
Average rainfall days in May
Old Fort, WI
- Average rainfall days in May: 14.9 days
The month with the highest number of rainy days is June (15.9 days).
The month with the least rainy days is February (3.6 days).
Average snowfall in May
Old Fort, WI
- Average snowfall in May: 0.91"
The month with the highest snowfall is January (6.85").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Old Fort, WI
- Average snowfall days in May: 0.9 days
The month with the highest number of snowfall days is January (22.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Old Fort, WI
- Average daylight in May: 15h and 6min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in May: 8h and 54min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 2h and 24min).
Average sunshine days in May
Old Fort, WI
- Average sunshine days in May: 13.9 days
The month with the most sunshine days is September (15.1 days).
The month with the least sunshine days is December (8.7 days).
Average UV index in May
Old Fort, WI
- Average UV index in May: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in May
Old Fort, WI
- Average cloud cover in May: 41
The month with the most cloud cover is January (Cloud cover 76).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in May
Old Fort, WI
- 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).
