May weather forecast
Wheaton, MO

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Weather in May

The last month of the spring, May, is a warm month in Wheaton, Missouri, with an average temperature ranging between max 75.6°F (24.2°C) and min 56.3°F (13.5°C).

Temperature

May signals a minor shift in the average high-temperature, moving from April's comfortable 66.7°F (19.3°C) to a warm 75.6°F (24.2°C). In Wheaton, an average temperature of 56.3°F (13.5°C) is noted during May nights.

Humidity

The most humid month in Wheaton is May, with an average relative humidity of 78%.

Rainfall

The month with the most rainfall is May, when the rain falls for 17.2 days and typically aggregates up to 5" (127mm) of precipitation.

Snowfall

Months with snowfall in Wheaton, Missouri, are January through May, November and December. May is the last month it regularly snows. During 0.2 snowfall days, in May, Wheaton aggregates 0.24" (6mm) of snow. Throughout the year, in Wheaton, Missouri, there are 16.6 snowfall days, and 7.2" (183mm) of snow is accumulated.

Daylight

The average length of the day in May in Wheaton is 14h and 9min.
On the first day of May, sunrise is at 6:21 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 5:58 am and sunset at 8:29 pm CDT.

Sunshine

In May, the average sunshine is 8.9h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the average person.
Note: The maximum daily UV index of 6 during May translates into the following directions:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
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Frequently asked questions

What are May temperatures in Wheaton?

Wheaton in May has an average high-temperature of 75.6°F (24.2°C) and an average low-temperature of 56.3°F (13.5°C).

What is the most humid month in Wheaton?

The most humid month in Wheaton, Missouri, is May, with an average relative humidity of 78%.

What is the average humidity in May in Wheaton?

In Wheaton, Missouri, the average relative humidity in May is 78%.

What is the wettest month in Wheaton?

The month with the most rainfall in Wheaton is May, when the rain falls for 17.2 days and typically aggregates up to 5" (127mm) of precipitation.

How much does it rain in Wheaton in May?

In Wheaton, Missouri, in May, during 17.2 rainfall days, 5" (127mm) of precipitation is typically accumulated.

What is the last month it snows in Wheaton?

May is the last month it regularly snows in Wheaton, Missouri. During 0.2 snowfall days, in May, Wheaton aggregates 0.24" (6mm) of snow.

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

In May, the average day length is 14h and 9min.

When is the sunrise / sunset in May in Wheaton?

On the first day of May, sunrise is at 6:21 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 5:58 am and sunset at 8:29 pm CDT.

How long on average sun shines in May in Wheaton?

In May, the average sunshine duration in Wheaton, Missouri, is 8.9h.

What are the months with the highest UV index in Wheaton?

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

What is the UV index reading in May in Wheaton?

The average daily maximum UV index in May in Wheaton is 6. A UV Index value of 6 to 7 symbolizes a high health threat from unsafe exposure to Sun's UV rays.
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
Wheaton, MO

Average temperature in May - Wheaton, MO
  • Average high temperature in May: 75.6°F

The warmest month (with the highest average high temperature) is July (88.9°F).
The month with the lowest average high temperature is January (42.4°F).

  • Average low temperature in May: 56.3°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 (27°F).

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Average pressure in May
Wheaton, MO

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

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

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Average wind speed in May
Wheaton, MO

Average wind speed in May - Wheaton, 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
Wheaton, MO

Average humidity in May - Wheaton, 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
Wheaton, MO

Average rainfall in May - Wheaton, MO
  • Average rainfall in May: 5"

The wettest month (with the highest rainfall) is May (5").
The driest month (with the least rainfall) is February (1.65").

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Average rainfall days in May
Wheaton, MO

Average rainfall days in May - Wheaton, MO
  • Average rainfall days in May: 17.2 days

The month with the highest number of rainy days is May (17.2 days).
The month with the least rainy days is January (7.4 days).

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Average snowfall in May
Wheaton, MO

Average snowfall in May - Wheaton, MO
  • Average snowfall in May: 0.24"

The months with the highest snowfall are January and February (2.17").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in May
Wheaton, MO

Average snowfall days in May - Wheaton, MO
  • Average snowfall days in May: 0.2 days

The month with the highest number of snowfall days is February (5.2 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
Wheaton, MO

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

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).

  • Average sunshine in May: 8h and 5min

The months with the most sunshine are June and July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 5h and 18min).

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Average sunshine days in May
Wheaton, MO

Average sunshine days in May - Wheaton, MO
  • Average sunshine days in May: 12 days

The month with the most sunshine days is December (20.5 days).
The month with the least sunshine days is July (11.4 days).

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Average UV index in May
Wheaton, MO

Average UV index in May - Wheaton, 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
Wheaton, MO

Average cloud cover in May - Wheaton, 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
Wheaton, MO

Average visibility in May - Wheaton, 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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Wheaton, Missouri, USA

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