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
Entering May, Lannon sees a temperature rise, with the average high-temperature advancing from April's cool 50.2°F (10.1°C) to an enjoyable 62.1°F (16.7°C). An average low-temperature of 47.1°F (8.4°C) is observed during the May nights.Humidity
In May, the average relative humidity in Lannon, Wisconsin, is 79%.Rainfall
The month with the most rainfall is May, when the rain falls for 17 days and typically aggregates up to 3.11" (79mm) of precipitation.Snowfall
May through September are months without snowfall in Lannon.Daylight
The average length of the day in May is 14h and 41min.On the first day of May, sunrise is at 5:44 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 5:15 am and sunset at 8:25 pm CDT.
Sunshine
The average sunshine in May in Lannon, Wisconsin, is 8.8h.UV index
In May, the average daily maximum UV index in Lannon is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the average person.Note: A maximum UV index of 4 in May translates into the following recommendations:
Make use of precautions - It is urged to ward off sun damage. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures in Lannon?
What is the average humidity in May in Lannon?
What is the wettest month in Lannon?
How many days does it rain in May in Lannon?
When it does not snow in Lannon?
Does it snow in Lannon in May?
How many hours of daylight does Lannon have in May?
When is the sunrise / sunset in May in Lannon?
How long on average sun shines in May in Lannon?
How high is the UV index in May in Lannon?
Average temperature in May
Lannon, WI
- Average high temperature in May: 62.1°F
The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (25.2°F).
- Average low temperature in May: 47.1°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 (14.4°F).
Average pressure in May
Lannon, WI
- Average pressure in May: 29.96"Hg
The months with the highest atmospheric pressure are January, February and March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in May
Lannon, WI
- Average wind speed in May: 8.8mph
The windiest month (with the highest average wind speed) is January (11.1mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in May
Lannon, WI
- Average humidity in May: 79%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (76%).
Average rainfall in May
Lannon, WI
- Average rainfall in May: 3.11"
The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the least rainfall) is February (1.02").
Average rainfall days in May
Lannon, WI
- Average rainfall days in May: 17 days
The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is February (4.1 days).
Average snowfall in May
Lannon, WI
- Average snowfall in May: 0"
The month with the highest snowfall is January (4.02").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Lannon, WI
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (12.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Lannon, WI
- Average daylight in May: 14h and 4min
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 5min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in May
Lannon, WI
- Average sunshine days in May: 12.3 days
The month with the most sunshine days is December (15.9 days).
The month with the least sunshine days is April (12 days).
Average UV index in May
Lannon, 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
Lannon, WI
- Average cloud cover in May: 41
The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are July and August (Cloud cover 28).
Average visibility in May
Lannon, 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).
Lannon, Wisconsin, USA
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