May weather forecast
Winona, MN

Weather in May

The last month of the spring, May, is an enjoyable month in Winona, Minnesota, with an average temperature fluctuating between 47.5°F (8.6°C) and 64.9°F (18.3°C).

Temperature

In Winona, the average high-temperature in May increases from a cool 52.9°F (11.6°C) in April to an enjoyable 64.9°F (18.3°C). In May, the average low-temperature is 47.5°F (8.6°C).

Humidity

The average relative humidity in May is 81%.

Rainfall

In Winona, during 17.9 rainfall days, 3.35" (85mm) of precipitation is typically accumulated. In Winona, during the entire year, the rain falls for 132.9 days and collects up to 24.88" (632mm) of precipitation.

Snowfall

Months with snowfall in Winona are January through May, October through December. May is the last month it regularly snows in Winona. During 0.3 snowfall days, Winona aggregates 0.28" (7mm) of snow. Throughout the year, in Winona, there are 48.6 snowfall days, and 19.13" (486mm) of snow is accumulated.

Daylight

The average length of the day in May in Winona is 14h and 47min.
On the first day of the month, sunrise is at 5:57 am and sunset at 8:09 pm. On the last day of May, sunrise is at 5:26 am and sunset at 8:41 pm CDT.

Sunshine

The average sunshine in May is 8.3h.

UV index

The average daily maximum UV index in May in Winona, Minnesota, is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.
Note: The daily maximum UV index of 5 in May interpret into the following advice:
Take precautions - Protection against skin and eye damage is obliged. 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 Winona?

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

How much does it rain in Winona in May?

In Winona, Minnesota, during May, the rain falls for 17.9 days and regularly aggregates up to 3.35" (85mm) of precipitation.

What is the last month it snows in Winona?

May is the last month it regularly snows. During 0.3 snowfall days, in May, Winona aggregates 0.28" (7mm) of snow.

How many hours of daylight does Winona have in May?

The average day length in May in Winona, Minnesota, is 14h and 47min.

What time are sunrise and sunset in May in Winona?

In May, on the first day of the month, sunrise is at 5:57 am and sunset at 8:09 pm. On the last day of the month, sunrise is at 5:26 am and sunset at 8:41 pm CDT.

How long on average sun shines in May in Winona?

In Winona, Minnesota, the average sunshine duration in May is 8.3h.

How high is the UV index in May in Winona?

The average daily maximum UV index in May in Winona, Minnesota, is 5. A UV Index estimate of 3 to 5 represents a medium health risk from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Winona, MN

Average temperature in May - Winona, MN
  • Average high temperature in May: 64.9°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 (20.8°F).

  • Average low temperature in May: 47.5°F

The month with the highest average low temperature is July (60.8°F).
The coldest month (with the lowest average low temperature) is January (7.9°F).

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Average pressure in May
Winona, MN

Average pressure in May - Winona, MN
  • 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
Winona, MN

Average wind speed in May - Winona, MN
  • Average wind speed in May: 8.1mph

The windiest month (with the highest average wind speed) is April (9.5mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).

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Average humidity in May
Winona, MN

Average humidity in May - Winona, MN
  • Average humidity in May: 81%

The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is October (76%).

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Average rainfall in May
Winona, MN

Average rainfall in May - Winona, MN
  • Average rainfall in May: 3.35"

The wettest month (with the highest rainfall) is June (4.49").
The driest month (with the least rainfall) is January (0.67").

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Average rainfall days in May
Winona, MN

Average rainfall days in May - Winona, MN
  • Average rainfall days in May: 17.9 days

The month with the highest number of rainy days is June (18.7 days).
The month with the least rainy days is February (2.3 days).

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Average snowfall in May
Winona, MN

Average snowfall in May - Winona, MN
  • Average snowfall in May: 0.28"

The month with the highest snowfall is February (5.55").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Winona, MN

Average snowfall days in May - Winona, MN
  • Average snowfall days in May: 0.3 days

The months with the highest number of snowfall days are January and February (11.1 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
Winona, MN

Average daylight in May / Average sunshine in May - Winona, MN
  • Average daylight in May: 14h and 47min

The month with the longest days is June (Average daylight: 15h and 26min).
The month with the shortest days is December (Average daylight: 8h and 57min).

  • Average sunshine in May: 8h and 18min

The month with the most sunshine is July (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).

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Average sunshine days in May
Winona, MN

Average sunshine days in May - Winona, MN
  • Average sunshine days in May: 11.4 days

The month with the most sunshine days is December (18.4 days).
The month with the least sunshine days is June (9.4 days).

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Average UV index in May
Winona, MN

Average UV index in May - Winona, MN
  • Average UV index in May: 5

The month with the highest UV index is July (UV index 6).
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
Winona, MN

Average cloud cover in May - Winona, MN
  • Average cloud cover in May: 45

The month with the most cloud cover is January (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 33).

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Average visibility in May
Winona, MN

Average visibility in May - Winona, MN
  • Average visibility in May: 6mi

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

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