May weather forecast and climate
Winterset, IA

A historic Hogback Covered Bridge in Winterset in Madison County, within Iowa
A historic Hogback Covered Bridge in Winterset in Madison County, within Iowa

Weather in May

The last month of the spring, May, is an agreeable month in Winterset, Iowa, with average temperature ranging between min 52.7°F (11.5°C) and max 69.4°F (20.8°C).

Temperature

In May, the average high-temperature rises, from a mild 59.7°F (15.4°C) in April, to a pleasant 69.4°F (20.8°C). In May, in Winterset, the average low-temperature is 52.7°F (11.5°C).

Humidity

In Winterset, the average relative humidity is 79%.

Rainfall

May is the month with the most rainfall in Winterset. Rain falls for 17.5 days and accumulates 3.98" (101mm) of precipitation.

Snowfall

Months with snowfall in Winterset are January through May, October through December. May is the last month it regularly snows. During 0.2 snowfall days, Winterset aggregates 0.35" (9mm) of snow. In Winterset, during the entire year, snow falls for 35 days, and aggregates up to 15.04" (382mm) of snow.

Daylight

In May, the average length of the day is 14.5h.

Sunshine

The average sunshine in May is 8.6h.

UV index

In May, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from the exposure to the Sun's UV radiation for the ordinary person.
Note: The average daily UV index of 5 transform into the following instructions:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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 Winterset?

In Winterset, Iowa, the average relative humidity in May is 79%.

What is the wettest month in Winterset?

May is the month with the most rainfall. Rain falls for 17.5 days and accumulates 3.98" (101mm) of precipitation.

How much does it rain in Winterset in May?

In Winterset, Iowa, in May, during 17.5 rainfall days, 3.98" (101mm) of precipitation is typically accumulated.

What is the last month it snows in Winterset?

May is the last month it regularly snows. During 0.2 snowfall days, in May, Winterset aggregates 0.35" (9mm) of snow.

What is the average length of the day in May in Winterset?

In May, the average length of the day in Winterset is 14.5h.

How many hours of sunshine does Winterset have in May?

The average sunshine in May in Winterset, Iowa, is 8.6h.

What is the UV index intensity in May in Winterset?

In Winterset, Iowa, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium health risk from the exposure to the Sun's UV rays.

Average temperature in May
Winterset, IA

Average temperature in May - Winterset, IA
  • Average high temperature in May: 69.4°F

The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (28.8°F).

  • Average low temperature in May: 52.7°F

The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (15.3°F).

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Average pressure in May
Winterset, IA

Average pressure in May - Winterset, IA
  • Average pressure in May: 29.93"

The month with the highest atmospheric pressure is January (30.16").
The month with the lowest atmospheric pressure is June (29.88").

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Average wind speed in May
Winterset, IA

Average wind speed in May - Winterset, IA
  • Average wind speed in May: 8.8mph

The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest month (with the lowest average wind speed) is August (7mph).

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Average humidity in May
Winterset, IA

Average humidity in May - Winterset, IA
  • Average humidity in May: 79%

Months with the highest relative humidity are January, February and June (82%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in May
Winterset, IA

Average rainfall in May - Winterset, IA
  • Average rainfall in May: 3.98"

The wettest month (with the highest rainfall) is May (3.98").
The driest month (with the least rainfall) is January (0.91").

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Average rainfall days in May
Winterset, IA

Average rainfall days in May - Winterset, IA
  • Average rainfall days in May: 17.5 days

The month with the highest number of rainy days is June (17.9 days).
Months with the least rainy days are January and February (3.8 days).

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Average snowfall in May
Winterset, IA

Average snowfall in May - Winterset, IA
  • Average snowfall in May: 0.35"

The month with the highest snowfall is February (4.53").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Winterset, IA

Average snowfall days in May - Winterset, IA
  • Average snowfall days in May: 0.2 days

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

Average daylight in May / Average sunshine in May - Winterset, IA
  • Average daylight in May: 14.5h

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.2h).

  • Average sunshine in May: 8.6h

The month with the most sunshine is July (Average sunshine: 10.3h).
The month with the least sunshine is January (Average sunshine: 4.4h).

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Average sunshine days in May
Winterset, IA

Average sunshine days in May - Winterset, IA
  • Average sunshine days in May: 11 days

The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is June (9.8 days).

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Average UV index in May
Winterset, IA

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

Months with the highest UV index are June, July and August (UV index 6).
Months with the lowest UV index are January, February, October, November and December (UV index 2).

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Average cloud cover in May
Winterset, IA

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

The month with the most cloud cover is January (Cloud cover 52).
Months with the least cloud cover are July and September (Cloud cover 29).

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Average visibility in May
Winterset, IA

Average visibility in May - Winterset, IA
  • Average visibility in May: 6mi

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

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