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
The arrival of May brings a temperature shift, with the average high-temperature escalating from a fresh 51.4°F (10.8°C) in April to a comfortable 63.5°F (17.5°C). Hartford experiences a mean temperature of 47.1°F (8.4°C) during May nights.Humidity
In Hartford, the average relative humidity in May is 79%.Rainfall
In Hartford, during May, the rain falls for 17.5 days and regularly aggregates up to 2.99" (76mm) of precipitation. Throughout the year, there are 141.6 rainfall days, and 25.67" (652mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.3 snowfall days, in May, Hartford aggregates 0.04" (1mm) of snow. Throughout the year, there are 60.3 snowfall days, and 17.72" (450mm) of snow is accumulated.Daylight
In May, the average length of the day is 14h and 43min.On the first day of May, sunrise is at 5:45 am and sunset at 7:55 pm. On the last day of the month, sunrise is at 5:16 am and sunset at 8:26 pm CDT.
Sunshine
In Hartford, the average sunshine in May is 8.7h.UV index
May through August, with an average maximum UV index of 5, are months with the highest UV index. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for average individuals.Note: A typical high UV index of 5 in May suggests the following recommendations:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May?
What is the average humidity in May?
How many days 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 many hours of sunshine does Hartford have in May?
What is the month with the highest UV index in Hartford?
What is the UV index reading in May?
Average temperature in May
Hartford, WI
- Average high temperature in May: 63.5°F
The warmest month (with the highest average high temperature) is July (77.9°F).
The month with the lowest average high temperature is January (23.9°F).
- Average low temperature in May: 47.1°F
The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is January (12.7°F).
Average pressure in May
Hartford, 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
Hartford, WI
- Average wind speed in May: 8.7mph
The windiest months (with the highest average wind speed) are January and February (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity in May
Hartford, WI
- Average humidity in May: 79%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is April (77%).
Average rainfall in May
Hartford, WI
- Average rainfall in May: 2.99"
The wettest month (with the highest rainfall) is June (3.11").
The driest months (with the least rainfall) are February and December (1.18").
Average rainfall days in May
Hartford, WI
- Average rainfall days in May: 17.5 days
The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in May
Hartford, WI
- Average snowfall in May: 0.04"
The month with the highest snowfall is February (4.45").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Hartford, WI
- Average snowfall days in May: 0.3 days
The month with the highest number of snowfall days is January (15.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Hartford, 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 0min).
- Average sunshine in May: 8h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).
Average sunshine days in May
Hartford, WI
- Average sunshine days in May: 10.8 days
The month with the most sunshine days is November (15.5 days).
The month with the least sunshine days is May (10.8 days).
Average UV index in May
Hartford, WI
- Average UV index in May: 5
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in May
Hartford, WI
- Average cloud cover in May: 42
The month with the most cloud cover is January (Cloud cover 64).
The months with the least cloud cover are July, August and September (Cloud cover 31).
Average visibility in May
Hartford, WI
- Average visibility in May: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
Hartford, Wisconsin, USA
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