May weather forecast
Fort Atkinson, IA

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Weather in May

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

Temperature

As May arrives, a rise in the average high-temperature is observed, moving from a fresh 54°F (12.2°C) in April to an enjoyable 65.7°F (18.7°C). Fort Atkinson observes an average nighttime low-temperature of 48.7°F (9.3°C) during the month of May.

Humidity

The average relative humidity in May is 81%.

Rainfall

In Fort Atkinson, in May, it is raining for 20.3 days, with typically 4.06" (103mm) of accumulated precipitation. Throughout the year, in Fort Atkinson, there are 149 rainfall days, and 30.59" (777mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.4 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

In May, the average length of the day is 14h and 41min.
On the first day of May in Fort Atkinson, sunrise is at 5:59 am and sunset at 8:09 pm. On the last day of the month, sunrise is at 5:30 am and sunset at 8:40 pm CDT.

Sunshine

The average sunshine in May is 8.2h.

UV index

May through August, with an average maximum UV index of 5, are months with the highest UV index in Fort Atkinson. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: A typical high UV index of 5 in May suggests the following recommendations:
Act with care - The need to guard against sun damage is communicated. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
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Frequently asked questions

What is the average May temperature in Fort Atkinson?

In May, the average high-temperature and low-temperature are 65.7°F (18.7°C) and 48.7°F (9.3°C) respectively.

What is the average humidity in May in Fort Atkinson?

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

How much does it rain in Fort Atkinson in May?

In Fort Atkinson, Iowa, in May, it is raining for 20.3 days, with typically 4.06" (103mm) of accumulated precipitation.

What is the last month it snows in Fort Atkinson?

May is the last month it regularly snows in Fort Atkinson, Iowa. 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 Fort Atkinson, the average day length in May is 14h and 41min.

When is the sunrise / sunset in May in Fort Atkinson?

On the first day of May, sunrise is at 5:59 am and sunset at 8:09 pm. On the last day of the month, sunrise is at 5:30 am and sunset at 8:40 pm CDT.

How long on average sun shines in May in Fort Atkinson?

The average sunshine duration in May in Fort Atkinson, Iowa, is 8.2h.

When is 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.

What is the UV index intensity in May in Fort Atkinson?

The average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a moderate health threat from unsafe 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
Fort Atkinson, IA

Average temperature in May - Fort Atkinson, IA
  • Average high temperature in May: 65.7°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 (22.3°F).

  • Average low temperature in May: 48.7°F

The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (9.7°F).

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Average pressure in May
Fort Atkinson, IA

Average pressure in May - Fort Atkinson, IA
  • Average pressure in May: 29.94"Hg

The months with the highest atmospheric pressure are January and February (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

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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: 9mph

The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is August (7mph).

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Average humidity in May
Fort Atkinson, IA

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

The 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: 4.06"

The wettest month (with the highest rainfall) is June (5.04").
The driest month (with the least rainfall) is January (1.1").

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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

The 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: 0.16"

The month with the highest snowfall is February (5.98").
The months with the least snowfall are June, July, August and September (0").

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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).
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
Fort Atkinson, IA

Average daylight in May / Average sunshine in May - Fort Atkinson, IA
  • 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 1min

The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).

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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

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).

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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: 6mi

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

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Fort Atkinson, Iowa, USA

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