May weather forecast
Hartford, WI

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Weather in May

May, the last month of the spring in Hartford, is a refreshing month, with temperature in the range of an average low of 47.1°F (8.4°C) and an average high of 63.5°F (17.5°C).

Temperature

In Hartford, the onset of May comes with an increased average high-temperature, moving from April's cool 51.4°F (10.8°C) to a comfortable 63.5°F (17.5°C). An average nighttime temperature of 47.1°F (8.4°C) is witnessed in Hartford throughout May.

Humidity

In May, the average relative humidity in Hartford is 79%.

Rainfall

In Hartford, in May, it is raining for 17.5 days, with typically 2.99" (76mm) of accumulated precipitation. In Hartford, during the entire year, the rain falls for 141.6 days and collects up to 25.67" (652mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Hartford, Wisconsin. May is the last month it regularly snows in Hartford, Wisconsin. During 0.3 snowfall days, in May, Hartford aggregates 0.04" (1mm) of snow. In Hartford, during the entire year, snow falls for 60.3 days and aggregates up to 17.72" (450mm) of snow.

Daylight

The average length of the day in May is 14h and 43min.
On the first day of May in Hartford, 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

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 in Hartford. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: A maximum high UV index of 5 in May translates into the following recommendations:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. When the Sun is at its strongest around midday, find shade and limit exposure. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
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Frequently asked questions

What are May temperatures in Hartford?

In May, the average high-temperature and low-temperature in Hartford, Wisconsin, are 63.5°F (17.5°C) and 47.1°F (8.4°C) respectively.

What is the average humidity in May in Hartford?

In May, the average relative humidity is 79%.

How many days does it rain in May in Hartford?

In Hartford, in May, it is raining for 17.5 days, with typically 2.99" (76mm) of accumulated precipitation.

What is the last month it snows in Hartford?

May is the last month it regularly snows in Hartford. During 0.3 snowfall days, in May, Hartford aggregates 0.04" (1mm) of snow.

How many hours of daylight does Hartford have in May?

In May, the average day length in Hartford, Wisconsin, is 14h and 43min.

What time are sunrise and sunset in May in Hartford?

On the first day of May in Hartford, 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.

How long on average sun shines in May in Hartford?

In Hartford, the average sunshine duration in May is 8.7h.

What are the months with the highest UV index in Hartford?

May through August, with an average maximum UV index of 5, are months with the highest UV index in Hartford, Wisconsin.

What is the UV index intensity in May in Hartford?

In Hartford, the average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a medium health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Hartford, WI

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).

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Average pressure in May
Hartford, WI

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).

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Average wind speed in May
Hartford, WI

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).

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Average humidity in May
Hartford, WI

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%).

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Average rainfall in May
Hartford, WI

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").

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Average rainfall days in May
Hartford, WI

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).

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Average snowfall in May
Hartford, WI

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").

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Average snowfall days in May
Hartford, WI

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).

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Average daylight in May /
Average sunshine in May
Hartford, WI

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).

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Average sunshine days in May
Hartford, WI

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).

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Average UV index in May
Hartford, WI

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).

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Average cloud cover in May
Hartford, WI

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).

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Average visibility in May
Hartford, WI

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).

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Hartford, Wisconsin, USA

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