May weather forecast
Fort Atkinson, WI

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Weather in May

May greets Fort Atkinson with an unmistakable warmth, opening the doors to summer. As the month progresses, the days grow longer, bringing more sunshine to the city. A marked reduction in snowfall to 0.08" (2mm) makes the city more vibrant. The weather during May gives the green light for outdoor activities and marks the beginning of summer bustle. The month culminates with a remarkable contrast to the freezing days of January and the chilly showers of April.

Temperature

The arrival of May in Fort Atkinson sees a shift in the average high-temperature, moving from a fresh 54°F (12.2°C) in April to a refreshing 66.6°F (19.2°C). Throughout May, the average low-temperature records at a chilly 48.7°F (9.3°C).

Humidity

The average relative humidity in May is 79%.

Rainfall

In Fort Atkinson, during May, the rain falls for 19.6 days and regularly aggregates up to 3.27" (83mm) of precipitation. Throughout the year, there are 149.4 rainfall days, and 28.82" (732mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.3 snowfall days, in May, Fort Atkinson aggregates 0.08" (2mm) of snow. In Fort Atkinson, Wisconsin, during the entire year, snow falls for 58 days and aggregates up to 21.85" (555mm) of snow.

Daylight

In Fort Atkinson, the average length of the day in May is 14h and 40min.
On the first day of the month, sunrise is at 5:48 am and sunset at 7:56 pm. On the last day of May, sunrise is at 5:19 am and sunset at 8:27 pm CDT.

Sunshine

In Fort Atkinson, the average sunshine in May is 8.5h.

UV index

In May, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: The UV index of 5 in May translates into these instructions:
Put precautions into practice - Ensuring skin and eye safety is a necessity. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.

Frequently asked questions

What are May temperatures?

The high-temperature during May is 66.6°F (19.2°C) and the low-temperature is 48.7°F (9.3°C).

What is the average humidity in May?

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

How much does it rain in May?

In Fort Atkinson, during May, the rain falls for 19.6 days and regularly aggregates up to 3.27" (83mm) of precipitation.

What is the last month it snows in Fort Atkinson?

May is the last month it regularly snows. During 0.3 snowfall days, in May, Fort Atkinson aggregates 0.08" (2mm) of snow.

What is the average length of the day in May in Fort Atkinson?

The average day length in May is 14h and 40min.

When are sunrise and sunset in May?

On the first day of May in Fort Atkinson, sunrise is at 5:48 am and sunset at 7:56 pm. On the last day of the month, sunrise is at 5:19 am and sunset at 8:27 pm CDT.

How long on average sun shines in May?

The average sunshine duration in May is 8.5h.

What is the UV index intensity in May?

In May, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate health threat 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
Fort Atkinson, WI

Average temperature in May - Fort Atkinson, WI
  • Average high temperature in May: 66.6°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 (24.3°F).

  • Average low temperature in May: 48.7°F

The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (12°F).

Average pressure in May
Fort Atkinson, WI

Average pressure in May - Fort Atkinson, WI
  • Average pressure in May: 29.96"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in May
Fort Atkinson, WI

Average wind speed in May - Fort Atkinson, WI
  • Average wind speed in May: 8.5mph

The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).

Average humidity in May
Fort Atkinson, WI

Average humidity in May - Fort Atkinson, 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 (76%).

Average rainfall in May
Fort Atkinson, WI

Average rainfall in May - Fort Atkinson, WI
  • Average rainfall in May: 3.27"

The wettest month (with the highest rainfall) is June (3.78").
The driest months (with the least rainfall) are January and February (1.42").

Average rainfall days in May
Fort Atkinson, WI

Average rainfall days in May - Fort Atkinson, WI
  • Average rainfall days in May: 19.6 days

The month with the highest number of rainy days is May (19.6 days).
The month with the least rainy days is February (5 days).

Average snowfall in May
Fort Atkinson, WI

Average snowfall in May - Fort Atkinson, WI
  • Average snowfall in May: 0.08"

The month with the highest snowfall is February (5.39").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Fort Atkinson, WI

Average snowfall days in May - Fort Atkinson, WI
  • Average snowfall days in May: 0.3 days

The month with the highest number of snowfall days is January (15.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in May /
Average sunshine in May
Fort Atkinson, WI

Average daylight in May / Average sunshine in May - Fort Atkinson, 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 3min

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 24min).

Average sunshine days in May
Fort Atkinson, WI

Average sunshine days in May - Fort Atkinson, WI
  • Average sunshine days in May: 9.8 days

The month with the most sunshine days is November (16.1 days).
The months with the least sunshine days are May and June (9.8 days).

Average UV index in May
Fort Atkinson, WI

Average UV index in May - Fort Atkinson, WI
  • Average UV index in May: 5

The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

Average cloud cover in May
Fort Atkinson, WI

Average cloud cover in May - Fort Atkinson, WI
  • Average cloud cover in May: 44

The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 34).

Average visibility in May
Fort Atkinson, WI

Average visibility in May - Fort Atkinson, WI
  • Average visibility in May: 6mi

The months with the highest visibility are March, April, May, June, October and November (6mi).
The months with the lowest visibility are January, February, July, August, September and December (5mi).

Fort Atkinson, Wisconsin, USA

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