May weather forecast
Union Grove, WI

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Weather in May

The last month of the spring, May, is an enjoyable month in Union Grove, Wisconsin, with an average temperature ranging between max 63.5°F (17.5°C) and min 48.2°F (9°C).

Temperature

As Union Grove transitions into May, the average high-temperature is observed to rise from a cool 51.8°F (11°C) in April to a refreshing 63.5°F (17.5°C). Nighttime temperatures in May average to a chilly 48.2°F (9°C).

Humidity

The average relative humidity in May is 79%.

Rainfall

In Union Grove, during May, the rain falls for 19 days and regularly aggregates up to 3.46" (88mm) of precipitation. In Union Grove, during the entire year, the rain falls for 154.2 days and collects up to 30.67" (779mm) of precipitation.

Snowfall

In Union Grove, snow does not fall in May through September.

Daylight

In Union Grove, the average length of the day in May is 14h and 39min.
On the first day of the month, sunrise is at 5:45 am and sunset at 7:53 pm. On the last day of May, sunrise is at 5:16 am and sunset at 8:23 pm CDT.

Sunshine

The average sunshine in May is 8.6h.

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 unprotected exposure to Sun's UV rays for average individuals.
Note: The daily maximum UV index of 4 in May interprets into the following advice:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Experience reduced UV exposure by about half when donning a wide-brim hat. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.

Frequently asked questions

What are May temperatures?

The average high-temperature, in May, in Union Grove, is 63.5°F (17.5°C), while the average low-temperature is 48.2°F (9°C).

What is the average humidity in May?

The average relative humidity in May is 79%.

How many days does it rain in May?

In Union Grove, during May, the rain falls for 19 days and regularly aggregates up to 3.46" (88mm) of precipitation.

When it does not snow?

In Union Grove, Wisconsin, snow does not fall in May through September.

Does it snow in May?

In May, it doesn't snow. April is the latest month when it typically snows.

How many hours of daylight does Union Grove have in May?

In May, the average day length is 14h and 39min.

When is the sunrise / sunset in May?

On the first day of May, sunrise is at 5:45 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 5:16 am and sunset at 8:23 pm CDT.

How long on average sun shines in May?

In Union Grove, the average sunshine duration in May is 8.6h.

What is the UV index reading in May?

The average daily maximum UV index in May is 4. A UV Index estimate of 3 to 5 represents a moderate health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Union Grove, WI

Average temperature in May - Union Grove, WI
  • Average high temperature in May: 63.5°F

The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (26.8°F).

  • Average low temperature in May: 48.2°F

The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (16°F).

Average pressure in May
Union Grove, WI

Average pressure in May - Union Grove, WI
  • Average pressure in May: 29.96"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in May
Union Grove, WI

Average wind speed in May - Union Grove, WI
  • Average wind speed in May: 8.7mph

The windiest month (with the highest average wind speed) is January (10.9mph).
The calmest month (with the lowest average wind speed) is August (6.7mph).

Average humidity in May
Union Grove, WI

Average humidity in May - Union Grove, WI
  • Average humidity in May: 79%

The month with the highest relative humidity is January (85%).
The months with the lowest relative humidity are October and November (76%).

Average rainfall in May
Union Grove, WI

Average rainfall in May - Union Grove, WI
  • Average rainfall in May: 3.46"

The wettest month (with the highest rainfall) is June (3.78").
The driest month (with the least rainfall) is January (1.5").

Average rainfall days in May
Union Grove, WI

Average rainfall days in May - Union Grove, WI
  • Average rainfall days in May: 19 days

The months with the highest number of rainy days are May and July (19 days).
The month with the least rainy days is February (4.9 days).

Average snowfall in May
Union Grove, WI

Average snowfall in May - Union Grove, WI
  • Average snowfall in May: 0"

The month with the highest snowfall is February (4.76").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in May
Union Grove, WI

Average snowfall days in May - Union Grove, WI
  • Average snowfall days in May: 0.1 days

The month with the highest number of snowfall days is January (12.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in May /
Average sunshine in May
Union Grove, WI

Average daylight in May / Average sunshine in May - Union Grove, 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 4min

The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

Average sunshine days in May
Union Grove, WI

Average sunshine days in May - Union Grove, WI
  • Average sunshine days in May: 9.8 days

The month with the most sunshine days is November (16 days).
The month with the least sunshine days is July (9.3 days).

Average UV index in May
Union Grove, WI

Average UV index in May - Union Grove, WI
  • Average UV index in May: 4

The month with the highest UV index is August (UV index 6).
The month with the lowest UV index is December (UV index 1).

Average cloud cover in May
Union Grove, WI

Average cloud cover in May - Union Grove, WI
  • Average cloud cover in May: 42

The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 29).

Average visibility in May
Union Grove, WI

Average visibility in May - Union Grove, WI
  • Average visibility in May: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

Union Grove, Wisconsin, USA

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