May weather forecast
Sparta, WI

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Weather in May

May, the last month of the spring in Sparta, is an enjoyable month, with an average temperature varying between 65.7°F (18.7°C) and 47.3°F (8.5°C).

Temperature

May's arrival signals an increase in average high-temperatures, moving from April's cool 52.7°F (11.5°C) to a comfortable 65.7°F (18.7°C). Sparta reports a consistent average low-temperature of 47.3°F (8.5°C) throughout May nights.

Humidity

The average relative humidity in May is 80%.

Rainfall

In Sparta, during May, the rain falls for 18.5 days and regularly aggregates up to 3.66" (93mm) of precipitation. Throughout the year, there are 142.9 rainfall days, and 29.13" (740mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall in Sparta. May is the last month it regularly snows in Sparta, Wisconsin. During 0.4 snowfall days, in May, Sparta aggregates 0.16" (4mm) of snow. In Sparta, during the entire year, snow falls for 67.6 days and aggregates up to 26.34" (669mm) of snow.

Daylight

In Sparta, the average length of the day in May is 14h and 46min.
On the first day of May, sunrise is at 5:53 am and sunset at 8:06 pm. On the last day of the month, sunrise is at 5:23 am and sunset at 8:38 pm CDT.

Sunshine

The average sunshine in May in Sparta is 8.3h.

UV index

The months with the highest UV index in Sparta are May through August, with an average maximum UV index of 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum daily UV index of 5 during May translates into the following directions:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. During bright days, sunglasses that offer UVA and UVB defense are recommended. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Sparta in May?

The high-temperature, in May, in Sparta, is 65.7°F (18.7°C), while the low-temperature averages to 47.3°F (8.5°C).

What is the average humidity in May in Sparta?

In May, the average relative humidity in Sparta is 80%.

How much does it rain in Sparta in May?

In Sparta, during May, the rain falls for 18.5 days and regularly aggregates up to 3.66" (93mm) of precipitation.

What is the last month it snows in Sparta?

May is the last month it regularly snows in Sparta. During 0.4 snowfall days, in May, Sparta aggregates 0.16" (4mm) of snow.

How many hours of daylight does Sparta have in May?

In Sparta, Wisconsin, the average day length in May is 14h and 46min.

When is the sunrise / sunset in May in Sparta?

On the first day of May in Sparta, Wisconsin, sunrise is at 5:53 am and sunset at 8:06 pm. On the last day of the month, sunrise is at 5:23 am and sunset at 8:38 pm CDT.

How long on average sun shines in May in Sparta?

In Sparta, Wisconsin, the average sunshine duration in May is 8.3h.

When is the highest UV index in Sparta?

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

What is the UV index reading in May in Sparta?

In Sparta, Wisconsin, the average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a medium hazard to health from exposure to Sun's UV rays.
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
Sparta, WI

Average temperature in May - Sparta, WI
  • Average high temperature in May: 65.7°F

The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (21.6°F).

  • Average low temperature in May: 47.3°F

The month with the highest average low temperature is July (60.8°F).
The coldest month (with the lowest average low temperature) is January (8.1°F).

Average pressure in May
Sparta, WI

Average pressure in May - Sparta, WI
  • Average pressure in May: 29.95"Hg

The months with the highest atmospheric pressure are January and February (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

Average wind speed in May
Sparta, WI

Average wind speed in May - Sparta, WI
  • Average wind speed in May: 8mph

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 (6.3mph).

Average humidity in May
Sparta, WI

Average humidity in May - Sparta, WI
  • Average humidity in May: 80%

The months with the highest relative humidity are January and February (90%).
The months with the lowest relative humidity are April and October (77%).

Average rainfall in May
Sparta, WI

Average rainfall in May - Sparta, WI
  • Average rainfall in May: 3.66"

The wettest month (with the highest rainfall) is June (4.57").
The driest month (with the least rainfall) is January (1.1").

Average rainfall days in May
Sparta, WI

Average rainfall days in May - Sparta, WI
  • Average rainfall days in May: 18.5 days

The month with the highest number of rainy days is June (18.8 days).
The month with the least rainy days is February (3.8 days).

Average snowfall in May
Sparta, WI

Average snowfall in May - Sparta, WI
  • Average snowfall in May: 0.16"

The month with the highest snowfall is February (6.85").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Sparta, WI

Average snowfall days in May - Sparta, WI
  • Average snowfall days in May: 0.4 days

The month with the highest number of snowfall days is January (15.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in May / Average sunshine in May - Sparta, WI
  • Average daylight in May: 14h and 5min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in May: 8h and 2min

The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).

Average sunshine days in May
Sparta, WI

Average sunshine days in May - Sparta, WI
  • Average sunshine days in May: 9.8 days

The month with the most sunshine days is October (15.6 days).
The month with the least sunshine days is June (8.4 days).

Average UV index in May
Sparta, WI

Average UV index in May - Sparta, 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, February, November and December (UV index 1).

Average cloud cover in May
Sparta, WI

Average cloud cover in May - Sparta, WI
  • Average cloud cover in May: 45

The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 34).

Average visibility in May
Sparta, WI

Average visibility in May - Sparta, WI
  • Average visibility in May: 6mi

The months with the highest visibility are April, May, June, October and November (6mi).
The months with the lowest visibility are January and February (4mi).

Sparta, Wisconsin, USA

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