May weather forecast and climate
Fort Atkinson, IA

Weather in May

The last month of the spring, May, is a comfortable month in Fort Atkinson, Iowa, with average temperature varying between 48.7°F (9.3°C) and 65.7°F (18.7°C).

Temperature

In Fort Atkinson, the average high-temperature increases, from a fresh 54°F (12.2°C) in April, to a comfortable 65.7°F (18.7°C). In May, the average low-temperature is 48.7°F (9.3°C).

Humidity

In Fort Atkinson, the average relative humidity is 81%.

Rainfall

In Fort Atkinson, it is raining for 20.3 days, with typically 4.06" (103mm) of accumulated precipitation. In Fort Atkinson, during the entire year, the rain falls for 149 days and collects up to 30.59" (777mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. May is the last month it regularly snows in Fort Atkinson. During 0.4 snowfall days, in May, Fort Atkinson aggregates 0.16" (4mm) of snow. In Fort Atkinson, Iowa, during the entire year, snow falls for 60.9 days, and aggregates up to 24.37" (619mm) of snow.

Daylight

The average length of the day in Fort Atkinson is 14.7h.

Sunshine

In May, the average sunshine in Fort Atkinson is 8.2h.

UV index

Months with the highest UV index in Fort Atkinson are May through August, with an average maximum UV index of 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: In May, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the average humidity in May in Fort Atkinson?

In Fort Atkinson, the average relative humidity in May is 81%.

How much does it rain in Fort Atkinson in May?

In May, in Fort Atkinson, Iowa, the rain falls for 20.3 days. Throughout May, 4.06" (103mm) of precipitation is accumulated.

What is the last month it snows in Fort Atkinson?

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

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

In May, the average length of the day in Fort Atkinson, Iowa, is 14.7h.

How many hours of sunshine does Fort Atkinson have in May?

In May, the average sunshine in Fort Atkinson is 8.2h.

What is the month with the highest UV index in Fort Atkinson?

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

How high is the UV index in May in Fort Atkinson?

The average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a moderate health threat from unsafe exposure to the Sun's UV rays.

Average temperature in May
Fort Atkinson, IA

Average temperature in May - Fort Atkinson, IA
  • Average high temperature in May: 18.7°C

The warmest month (with the highest average high temperature) is July (25.8°C).
The month with the lowest average high temperature is January (-5.4°C).

  • Average low temperature in May: 9.3°C

The month with the highest average low temperature is July (16.6°C).
The coldest month (with the lowest average low temperature) is January (-12.4°C).

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Average pressure in May
Fort Atkinson, IA

Average pressure in May - Fort Atkinson, IA
  • Average pressure in May: 1013.9mbar

The month with the highest atmospheric pressure is January (1020.4mbar).
The month with the lowest atmospheric pressure is June (1012.2mbar).

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Average wind speed in May
Fort Atkinson, IA

Average wind speed in May - Fort Atkinson, IA
  • Average wind speed in May: 14.5km/h

The windiest month (with the highest average wind speed) is April (16.7km/h).
The calmest month (with the lowest average wind speed) is August (11.3km/h).

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Average humidity in May
Fort Atkinson, IA

Average humidity in May - Fort Atkinson, IA
  • Average humidity in May: 81%

Months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is October (76%).

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Average rainfall in May
Fort Atkinson, IA

Average rainfall in May - Fort Atkinson, IA
  • Average rainfall in May: 103mm

The wettest month (with the highest rainfall) is June (128mm).
The driest month (with the least rainfall) is January (28mm).

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Average rainfall days in May
Fort Atkinson, IA

Average rainfall days in May - Fort Atkinson, IA
  • Average rainfall days in May: 20.3 days

Months with the highest number of rainy days are May and June (20.3 days).
The month with the least rainy days is February (4.4 days).

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Average snowfall in May
Fort Atkinson, IA

Average snowfall in May - Fort Atkinson, IA
  • Average snowfall in May: 4mm

The month with the highest snowfall is February (152mm).
Months with the least snowfall are June, July, August and September (0mm).

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Average snowfall days in May
Fort Atkinson, IA

Average snowfall days in May - Fort Atkinson, IA
  • Average snowfall days in May: 0.4 days

The month with the highest number of snowfall days is January (14.3 days).
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
Fort Atkinson, IA

Average daylight in May / Average sunshine in May - Fort Atkinson, IA
  • Average daylight in May: 14.7h

The month with the longest days is June (Average daylight: 15.3h).
The month with the shortest days is December (Average daylight: 9h).

  • Average sunshine in May: 8.2h

The month with the most sunshine is August (Average sunshine: 9.8h).
The month with the least sunshine is January (Average sunshine: 3.5h).

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Average sunshine days in May
Fort Atkinson, IA

Average sunshine days in May - Fort Atkinson, IA
  • Average sunshine days in May: 8.2 days

The month with the most sunshine days is November (16.2 days).
The month with the least sunshine days is June (7.1 days).

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Average UV index in May
Fort Atkinson, IA

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

Months with the highest UV index are May, June, July and August (UV index 5).
Months with the lowest UV index are January, February, November and December (UV index 1).

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Average cloud cover in May
Fort Atkinson, IA

Average cloud cover in May - Fort Atkinson, IA
  • Average cloud cover in May: 45

The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 32).

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Average visibility in May
Fort Atkinson, IA

Average visibility in May - Fort Atkinson, IA
  • Average visibility in May: 9km

Months with the highest visibility are March, April, May, June, August, September, October and November (9km).
Months with the lowest visibility are January, February, July and December (8km).

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