May weather forecast
Winterset, IA

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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

May showcases quintessential spring weather in Winterset, marked by warmer temperatures, vibrant greenery, and blooming flowers. As the monthly high temperature climbs to 69.4°F (20.8°C) from the lower end of 52.7°F (11.5°C), May becomes the wettest month of Winterset with rainfall amounting to 3.98" (101mm). A radiant sun marks its dominion in the sky, casting longer days and picturesque evenings. Winds gradually mellow down, paving the way for calmer and more pleasant weather. In essence, May in Winterset is all about rejuvenation as nature unfolds its colors.

Temperature

Winterset's weather shows a temperature rise with the arrival of May, moving from a refreshing 59.7°F (15.4°C) in April to a pleasant 69.4°F (20.8°C). During the nights in May, Winterset experiences a consistent average temperature of 52.7°F (11.5°C).

Humidity

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

Rainfall

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

Snowfall

January through May, October through December are months with snowfall in Winterset. May is the last month it regularly snows in Winterset. During 0.2 snowfall days, in May, 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

The average length of the day in May is 14h and 31min.
On the first day of the month, sunrise is at 6:12 am and sunset at 8:13 pm. On the last day of May, in Winterset, sunrise is at 5:45 am and sunset at 8:42 pm CDT.

Sunshine

The average sunshine in May in Winterset is 8.6h.

UV index

In May, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: A maximum high daily UV index of 5 during May translates into the following directions:
Ensure safety - Imperative it is to shield skin and eyes from damage. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in Winterset in May?

In May, the average high-temperature and low-temperature in Winterset, Iowa, are 69.4°F (20.8°C) and 52.7°F (11.5°C) respectively.

What is the average humidity in May in Winterset?

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

What is the rainiest 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, 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 in Winterset, Iowa. During 0.2 snowfall days, in May, Winterset aggregates 0.35" (9mm) of snow.

How many hours of daylight does Winterset have in May?

In Winterset, the average day length in May is 14h and 31min.

When is the sunrise / sunset in May in Winterset?

In May, on the first day of the month, sunrise is at 6:12 am and sunset at 8:13 pm. On the last day of the month, in Winterset, sunrise is at 5:45 am and sunset at 8:42 pm CDT.

How many hours of sunshine does Winterset have in May?

The average sunshine duration in May in Winterset is 8.6h.

How high is the UV index in May in Winterset?

In Winterset, Iowa, the average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability 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
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).

Average pressure in May
Winterset, IA

Average pressure in May - Winterset, 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 (29.88"Hg).

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).

Average humidity in May
Winterset, IA

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

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

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").

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).
The months with the least rainy days are January and February (3.8 days).

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").
The months with the least snowfall are June, July, August and September (0").

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).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in May /
Average sunshine in May
Winterset, IA

Average daylight in May / Average sunshine in May - Winterset, IA
  • Average daylight in May: 14h and 3min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in May: 8h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).

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).

Average UV index in May
Winterset, IA

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

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

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).
The months with the least cloud cover are July and September (Cloud cover 29).

Average visibility in May
Winterset, IA

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

The 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).

Winterset, Iowa, USA

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