May weather forecast
Peterson, IA

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Weather in May

The last month of the spring, May, is a pleasant month in Peterson, Iowa, with an average temperature varying between 68.5°F (20.3°C) and 52.2°F (11.2°C).

Temperature

May brings a temperature increase, with average high-temperatures moving from April's refreshing 56.8°F (13.8°C) to an agreeable 68.5°F (20.3°C). The average low-temperature during May nights is a fresh 52.2°F (11.2°C).

Humidity

In May, the average relative humidity in Peterson is 69%.

Rainfall

In Peterson, Iowa, during May, the rain falls for 15.3 days and regularly aggregates up to 2.68" (68mm) of precipitation. Throughout the year, there are 117 rainfall days, and 19.84" (504mm) 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, Peterson aggregates 0.04" (1mm) of snow. Throughout the year, there are 36.4 snowfall days, and 10.67" (271mm) of snow is accumulated.

Daylight

In Peterson, the average length of the day in May is 14h and 40min.
On the first day of the month, sunrise is at 6:14 am and sunset at 8:22 pm. On the last day of May, in Peterson, sunrise is at 5:45 am and sunset at 8:53 pm CDT.

Sunshine

The average sunshine in May in Peterson, Iowa, is 8.7h.

UV index

In May, the average daily maximum UV index in Peterson is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: A daily high UV index of 5 in May leads to these guidelines:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Stay sun-safe with clothing that is both closely woven and worn loosely. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
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Frequently asked questions

What are the temperatures in Peterson in May?

In May, the average high-temperature and low-temperature in Peterson are 68.5°F (20.3°C) and 52.2°F (11.2°C) respectively.

What is the average humidity in May in Peterson?

In May, the average relative humidity in Peterson, Iowa, is 69%.

How much does it rain in Peterson in May?

In May, in Peterson, the rain falls for 15.3 days. Throughout May, 2.68" (68mm) of precipitation is accumulated.

What is the last month it snows in Peterson?

May is the last month it regularly snows. During 0.3 snowfall days, in May, Peterson aggregates 0.04" (1mm) of snow.

How many hours of daylight does Peterson have in May?

In May, the average day length in Peterson is 14h and 40min.

When are sunrise and sunset in May in Peterson?

On the first day of May, sunrise is at 6:14 am and sunset at 8:22 pm. On the last day of the month, sunrise is at 5:45 am and sunset at 8:53 pm CDT.

How many hours of sunshine does Peterson have in May?

In May, the average sunshine duration is 8.7h.

How high is the UV index in May in Peterson?

In Peterson, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a medium health risk from unprotected exposure to 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
Peterson, IA

Average temperature in May - Peterson, IA
  • Average high temperature in May: 68.5°F

The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (24.4°F).

  • Average low temperature in May: 52.2°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (12°F).

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Average pressure in May
Peterson, IA

Average pressure in May - Peterson, IA
  • Average pressure in May: 29.93"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

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Average wind speed in May
Peterson, IA

Average wind speed in May - Peterson, IA
  • Average wind speed in May: 9.7mph

The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest month (with the lowest average wind speed) is July (7.6mph).

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Average humidity in May
Peterson, IA

Average humidity in May - Peterson, IA
  • Average humidity in May: 69%

The month with the highest relative humidity is January (86%).
The months with the lowest relative humidity are April and October (68%).

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Average rainfall in May
Peterson, IA

Average rainfall in May - Peterson, IA
  • Average rainfall in May: 2.68"

The wettest month (with the highest rainfall) is June (3.15").
The driest month (with the least rainfall) is January (0.55").

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Average rainfall days in May
Peterson, IA

Average rainfall days in May - Peterson, IA
  • Average rainfall days in May: 15.3 days

The month with the highest number of rainy days is June (17.3 days).
The month with the least rainy days is February (2.6 days).

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Average snowfall in May
Peterson, IA

Average snowfall in May - Peterson, IA
  • Average snowfall in May: 0.04"

The month with the highest snowfall is February (3.19").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Peterson, IA

Average snowfall days in May - Peterson, IA
  • Average snowfall days in May: 0.3 days

The month with the highest number of snowfall days is January (9.1 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
Peterson, IA

Average daylight in May / Average sunshine in May - Peterson, 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 4min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

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Average sunshine days in May
Peterson, IA

Average sunshine days in May - Peterson, IA
  • Average sunshine days in May: 13.4 days

The month with the most sunshine days is November (21.1 days).
The month with the least sunshine days is June (11.1 days).

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Average UV index in May
Peterson, IA

Average UV index in May - Peterson, IA
  • Average UV index in May: 5

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

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Average cloud cover in May
Peterson, IA

Average cloud cover in May - Peterson, IA
  • Average cloud cover in May: 41

The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is July (Cloud cover 28).

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Average visibility in May
Peterson, IA

Average visibility in May - Peterson, IA
  • 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).

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Peterson, Iowa, USA

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