May weather forecast
Vienna, MO

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Weather in May

The last month of the spring, May, is a moderately hot month in Vienna, Missouri, with temperature in the range of an average low of 55.9°F (13.3°C) and an average high of 76.3°F (24.6°C).

Temperature

A rise in the average high-temperature is observed during May, moving from a comfortable 66.2°F (19°C) in April to a warm 76.3°F (24.6°C). May nights are marked by an average low-temperature of 55.9°F (13.3°C).

Humidity

The months with the highest humidity are March and May, with an average relative humidity of 77%.

Rainfall

The month with the most rainfall is May, when the rain falls for 17.8 days and typically aggregates up to 3.98" (101mm) of precipitation.

Snowfall

In Vienna, snow does not fall in May through September.

Daylight

The average length of the day in May is 14h and 16min.
On the first day of May, sunrise is at 6:10 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 5:46 am and sunset at 8:24 pm CDT.

Sunshine

In Vienna, the average sunshine in May is 9.3h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: A typical high UV index of 6 in May suggests the following recommendations:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Updated: Jul 15, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are May temperatures?

In Vienna, 76.3°F (24.6°C) is the average high-temperature and 55.9°F (13.3°C) is the average low-temperature during May.

What are the most humid months?

The months with the highest humidity are March and May, with an average relative humidity of 77%.

What is the average humidity in May?

In May, the average relative humidity is 77%.

What is the rainiest month?

May is the month with the most rainfall. Rain falls for 17.8 days and accumulates 3.98" (101mm) of precipitation.

How much does it rain in May?

In Vienna, in May, during 17.8 rainfall days, 3.98" (101mm) of precipitation is typically accumulated.

When it does not snow?

May through September are months without snowfall.

Does it snow in May?

In May, in Vienna, it doesn't snow. April is the latest month when it typically snows.

What is the average length of the day in May?

In Vienna, the average day length in May is 14h and 16min.

What time are sunrise and sunset in May?

On the first day of May, sunrise is at 6:10 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 5:46 am and sunset at 8:24 pm CDT.

How long on average sun shines in May?

In Vienna, the average sunshine duration in May is 9.3h.

When is the highest UV index?

May through August, with an average maximum UV index of 6, are months with the highest UV index.

How high is the UV index in May?

The average daily maximum UV index in May in Vienna is 6. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Vienna, MO

Average temperature in May - Vienna, MO
  • Average high temperature in May: 76.3°F

The warmest month (with the highest average high temperature) is July (89.1°F).
The month with the lowest average high temperature is January (39.2°F).

  • Average low temperature in May: 55.9°F

The month with the highest average low temperature is July (67.8°F).
The coldest month (with the lowest average low temperature) is January (24.4°F).

Average pressure in May
Vienna, MO

Average pressure in May - Vienna, MO
  • Average pressure in May: 29.95"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in May
Vienna, MO

Average wind speed in May - Vienna, MO
  • Average wind speed in May: 7mph

The windiest month (with the highest average wind speed) is January (8.6mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).

Average humidity in May
Vienna, MO

Average humidity in May - Vienna, MO
  • Average humidity in May: 77%

The months with the highest relative humidity are March and May (77%).
The month with the lowest relative humidity is October (72%).

Average rainfall in May
Vienna, MO

Average rainfall in May - Vienna, MO
  • 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 November (1.65").

Average rainfall days in May
Vienna, MO

Average rainfall days in May - Vienna, MO
  • Average rainfall days in May: 17.8 days

The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is December (7 days).

Average snowfall in May
Vienna, MO

Average snowfall in May - Vienna, MO
  • Average snowfall in May: 0"

The month with the highest snowfall is February (3.46").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in May
Vienna, MO

Average snowfall days in May - Vienna, MO
  • Average snowfall days in May: 0.1 days

The month with the highest number of snowfall days is January (7.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in May /
Average sunshine in May
Vienna, MO

Average daylight in May / Average sunshine in May - Vienna, MO
  • Average daylight in May: 14h and 2min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in May: 9h and 2min

The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

Average sunshine days in May
Vienna, MO

Average sunshine days in May - Vienna, MO
  • Average sunshine days in May: 11.4 days

The month with the most sunshine days is November (19 days).
The month with the least sunshine days is May (11.4 days).

Average UV index in May
Vienna, MO

Average UV index in May - Vienna, MO
  • Average UV index in May: 6

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

Average cloud cover in May
Vienna, MO

Average cloud cover in May - Vienna, MO
  • Average cloud cover in May: 38

The months with the most cloud cover are February and March (Cloud cover 49).
The month with the least cloud cover is June (Cloud cover 29).

Average visibility in May
Vienna, MO

Average visibility in May - Vienna, MO
  • Average visibility in May: 5mi

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

Vienna, Missouri, USA

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