May weather forecast
Mount Vernon, MO

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Weather in May

The last month of the spring, May, is a moderately hot month in Mount Vernon, Missouri, with an average temperature varying between 75.7°F (24.3°C) and 56.5°F (13.6°C).

Temperature

May indicates a change in the average high-temperature, moving up from an enjoyable 66.7°F (19.3°C) in April to a moderately hot 75.7°F (24.3°C). Mount Vernon's May nights cool down to an average low-temperature of 56.5°F (13.6°C).

Humidity

May is the most humid month in Mount Vernon, with an average relative humidity of 78%.

Rainfall

May is the month with the most rainfall in Mount Vernon, Missouri. Rain falls for 17.8 days and accumulates 5.31" (135mm) of precipitation.

Snowfall

Months with snowfall in Mount Vernon are January through May, November and December. May is the last month it regularly snows. During 0.3 snowfall days, in May, Mount Vernon aggregates 0.31" (8mm) of snow. Throughout the year, in Mount Vernon, there are 17.9 snowfall days, and 6.93" (176mm) of snow is accumulated.

Daylight

In May, the average length of the day in Mount Vernon is 14h and 10min.
On the first day of the month, sunrise is at 6:19 am and sunset at 8:04 pm. On the last day of May, sunrise is at 5:56 am and sunset at 8:29 pm CDT.

Sunshine

The average sunshine in May in Mount Vernon is 9h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: A daily maximum UV index of 6 in May translates into the following instructions:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
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Frequently asked questions

What are the temperatures in Mount Vernon in May?

The average high-temperature and low-temperature during May are 75.7°F (24.3°C) and 56.5°F (13.6°C) respectively.

What is the most humid month in Mount Vernon?

May is the most humid month in Mount Vernon, with an average relative humidity of 78%.

What is the average humidity in May in Mount Vernon?

The average relative humidity in May in Mount Vernon is 78%.

What is the rainiest month in Mount Vernon?

The month with the most rainfall is May, when the rain falls for 17.8 days and typically aggregates up to 5.31" (135mm) of precipitation.

How much does it rain in Mount Vernon in May?

In Mount Vernon, in May, it is raining for 17.8 days, with typically 5.31" (135mm) of accumulated precipitation.

What is the last month it snows in Mount Vernon?

May is the last month it regularly snows in Mount Vernon, Missouri. During 0.3 snowfall days, in May, Mount Vernon aggregates 0.31" (8mm) of snow.

How many hours of daylight does Mount Vernon have in May?

In May, the average day length in Mount Vernon is 14h and 10min.

What time are sunrise and sunset in May in Mount Vernon?

In May, on the first day of the month, sunrise is at 6:19 am and sunset at 8:04 pm. On the last day of the month, in Mount Vernon, Missouri, sunrise is at 5:56 am and sunset at 8:29 pm CDT.

How many hours of sunshine does Mount Vernon have in May?

The average sunshine duration in May in Mount Vernon is 9h.

What are the months with the highest UV index in Mount Vernon?

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

What is the UV index intensity in May in Mount Vernon?

The average daily maximum UV index in May is 6. A UV Index reading 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
Mount Vernon, MO

Average temperature in May - Mount Vernon, MO
  • Average high temperature in May: 75.7°F

The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is January (42.3°F).

  • Average low temperature in May: 56.5°F

The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (26.6°F).

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Average pressure in May
Mount Vernon, MO

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

The month with the highest atmospheric pressure is January (30.17"Hg).
The months with the lowest atmospheric pressure are April and June (29.93"Hg).

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Average wind speed in May
Mount Vernon, MO

Average wind speed in May - Mount Vernon, MO
  • Average wind speed in May: 8.6mph

The windiest months (with the highest average wind speed) are March and April (10.3mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).

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Average humidity in May
Mount Vernon, MO

Average humidity in May - Mount Vernon, MO
  • Average humidity in May: 78%

The month with the highest relative humidity is May (78%).
The months with the lowest relative humidity are January, July, August and October (73%).

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Average rainfall in May
Mount Vernon, MO

Average rainfall in May - Mount Vernon, MO
  • Average rainfall in May: 5.31"

The wettest month (with the highest rainfall) is May (5.31").
The driest month (with the least rainfall) is February (1.69").

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Average rainfall days in May
Mount Vernon, MO

Average rainfall days in May - Mount Vernon, 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 January (7.3 days).

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Average snowfall in May
Mount Vernon, MO

Average snowfall in May - Mount Vernon, MO
  • Average snowfall in May: 0.31"

The month with the highest snowfall is February (2.24").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in May
Mount Vernon, MO

Average snowfall days in May - Mount Vernon, MO
  • Average snowfall days in May: 0.3 days

The month with the highest number of snowfall days is February (5.3 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
Mount Vernon, MO

Average daylight in May / Average sunshine in May - Mount Vernon, MO
  • Average daylight in May: 14h and 1min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).

  • Average sunshine in May: 9h and 0min

The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 5h and 18min).

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Average sunshine days in May
Mount Vernon, MO

Average sunshine days in May - Mount Vernon, MO
  • Average sunshine days in May: 10.9 days

The month with the most sunshine days is December (20.7 days).
The month with the least sunshine days is July (10.6 days).

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Average UV index in May
Mount Vernon, MO

Average UV index in May - Mount Vernon, 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 and December (UV index 2).

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Average cloud cover in May
Mount Vernon, MO

Average cloud cover in May - Mount Vernon, MO
  • Average cloud cover in May: 38

The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 26).

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Average visibility in May
Mount Vernon, MO

Average visibility in May - Mount Vernon, MO
  • 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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Mount Vernon, Missouri, USA

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