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
As May sets, the average high-temperature displays a significant increase, moving up from a cool 50.4°F (10.2°C) in April to an enjoyable 64.8°F (18.2°C). Siren's nights in May cool down to an average low-temperature of 46°F (7.8°C).Humidity
The months with the lowest humidity are April and May, with an average relative humidity of 74%.Rainfall
In Siren, during May, the rain falls for 14.6 days and regularly aggregates up to 2.87" (73mm) of precipitation. Throughout the year, 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. During 0.8 snowfall days, in May, Siren aggregates 0.47" (12mm) of snow. In Siren, during the entire year, snow falls for 70.6 days and aggregates up to 23.9" (607mm) of snow.Daylight
In Siren, the average length of the day in May is 14h and 58min.On the first day of May, sunrise is at 5:55 am and sunset at 8:17 pm. On the last day of the month, sunrise is at 5:23 am and sunset at 8:51 pm CDT.
Sunshine
In Siren, Wisconsin, the average sunshine in May is 8.6h.UV index
The average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for average individuals.Note: A typical high UV index of 5 in May suggests the following recommendations:
Take necessary precautions - Defending against sun damage is advocated. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average May temperature?
What is the least humid month?
What is the average humidity in May?
How much does it rain in May?
What is the last month it snows?
What is the average length of the day in May?
What time are sunrise and sunset in May?
How long on average sun shines in May?
What is the UV index intensity in May?
Average temperature in May
Siren, 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
Siren, 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
Siren, 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
Siren, 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
Siren, 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
Siren, 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
Siren, 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
Siren, 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
Siren, 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
Siren, 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
Siren, 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
Siren, 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
Siren, 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).
Siren, Wisconsin, USA
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