May weather forecast
Richmond Heights, MO

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Weather in May

The last month of the spring, May, is a warm month in Richmond Heights, Missouri, with an average temperature ranging between min 57.7°F (14.3°C) and max 74.8°F (23.8°C).

Temperature

The arrival of May brings a change in Richmond Heights's weather, with average high-temperatures moving from April's enjoyable 65.5°F (18.6°C) to a warm 74.8°F (23.8°C). In May, Richmond Heights encounters an average low-temperature of 57.7°F (14.3°C) during the night.

Humidity

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

Rainfall

May is the month with the most rainfall. Rain falls for 16.9 days and accumulates 3.58" (91mm) of precipitation.

Snowfall

In Richmond Heights, snow does not fall in April through October.

Daylight

In Richmond Heights, the average length of the day in May is 14h and 17min.
On the first day of the month, sunrise is at 6:02 am and sunset at 7:53 pm. On the last day of May, sunrise is at 5:38 am and sunset at 8:19 pm CDT.

Sunshine

In Richmond Heights, the average sunshine in May is 9.5h.

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 exposure to the Sun's UV rays for ordinary individuals.
Note: The UV index of 6 during May leads to these advisories:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.

Frequently asked questions

What are May temperatures?

The high-temperature during May is 74.8°F (23.8°C) and the low-temperature is 57.7°F (14.3°C).

What is the most humid month?

With an average relative humidity of 78%, May is the most humid month.

What is the average humidity in May in Richmond Heights?

In May, the average relative humidity is 78%.

What is the rainiest month?

The month with the most rainfall is May, when the rain falls for 16.9 days and typically aggregates up to 3.58" (91mm) of precipitation.

How many days does it rain in May?

In Richmond Heights, in May, during 16.9 rainfall days, 3.58" (91mm) of precipitation is typically accumulated.

When it does not snow?

In Richmond Heights, snow does not fall in April through October.

How many hours of daylight does Richmond Heights have in May?

In May, the average day length is 14h and 17min.

When is the sunrise / sunset in May?

On the first day of May in Richmond Heights, sunrise is at 6:02 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 5:38 am and sunset at 8:19 pm CDT.

How many hours of sunshine does Richmond Heights have in May?

In May, the average sunshine duration is 9.5h.

What is the month with the highest UV index?

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

How high is the UV index in May?

In May, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health threat from exposure to the Sun's 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
Richmond Heights, MO

Average temperature in May - Richmond Heights, MO
  • Average high temperature in May: 74.8°F

The warmest month (with the highest average high temperature) is July (86.9°F).
The month with the lowest average high temperature is January (37.8°F).

  • Average low temperature in May: 57.7°F

The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).

Average pressure in May
Richmond Heights, MO

Average pressure in May - Richmond Heights, 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
Richmond Heights, MO

Average wind speed in May - Richmond Heights, MO
  • Average wind speed in May: 7.2mph

The windiest month (with the highest average wind speed) is January (9.2mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).

Average humidity in May
Richmond Heights, MO

Average humidity in May - Richmond Heights, MO
  • Average humidity in May: 78%

The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is October (70%).

Average rainfall in May
Richmond Heights, MO

Average rainfall in May - Richmond Heights, MO
  • Average rainfall in May: 3.58"

The wettest month (with the highest rainfall) is May (3.58").
The driest month (with the least rainfall) is February (1.69").

Average rainfall days in May
Richmond Heights, MO

Average rainfall days in May - Richmond Heights, MO
  • Average rainfall days in May: 16.9 days

The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is January (6.5 days).

Average snowfall in May
Richmond Heights, MO

Average snowfall in May - Richmond Heights, MO
  • Average snowfall in May: 0"

The month with the highest snowfall is February (2.6").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in May
Richmond Heights, MO

Average snowfall days in May - Richmond Heights, MO
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is February (5.2 days).
The months with the least snowfall days are May, June, July and August (0 days).

Average daylight in May /
Average sunshine in May
Richmond Heights, MO

Average daylight in May / Average sunshine in May - Richmond Heights, 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 30min).

  • Average sunshine in May: 9h and 3min

The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).

Average sunshine days in May
Richmond Heights, MO

Average sunshine days in May - Richmond Heights, MO
  • Average sunshine days in May: 11.5 days

The month with the most sunshine days is January (21 days).
The month with the least sunshine days is June (11.2 days).

Average UV index in May
Richmond Heights, MO

Average UV index in May - Richmond Heights, 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 and December (UV index 2).

Average cloud cover in May
Richmond Heights, MO

Average cloud cover in May - Richmond Heights, MO
  • Average cloud cover in May: 36

The month with the most cloud cover is January (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 27).

Average visibility in May
Richmond Heights, MO

Average visibility in May - Richmond Heights, 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).

Richmond Heights, Missouri, USA

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