May weather forecast and climate
Riley, KS

Weather in May

The last month of the spring, May, is a pleasant month in Riley, Kansas, with temperature in the range of an average low of 55°F (12.8°C) and an average high of 73.2°F (22.9°C).

Temperature

In May, the average high-temperature marginally rises, from a comfortable 64.9°F (18.3°C) in April, to an agreeable 73.2°F (22.9°C). In Riley, the average low-temperature is 55°F (12.8°C).

Humidity

With an average relative humidity of 74%, May is the most humid month in Riley.

Rainfall

May is the month with the most rainfall. Rain falls for 14.3 days and accumulates 3.98" (101mm) of precipitation.

Snowfall

May through September are months without snowfall in Riley.

Daylight

In Riley, the average length of the day is 14.4h.

Sunshine

In Riley, the average sunshine in May is 9.1h.

UV index

In Riley, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high threat to health from unsafe exposure to the UV radiation for the average person.
Note: In May, the average maximum UV index of 6 translate into the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the temperature in May in Riley?

In Riley, in May, the average high-temperature is 73.2°F (22.9°C), and the average low-temperature is 55°F (12.8°C).

What is the most humid month in Riley?

With an average relative humidity of 74%, May is the most humid month in Riley.

What is the average humidity in May in Riley?

The average relative humidity in May in Riley, Kansas, is 74%.

How many days does it rain in May in Riley?

In May, in Riley, the rain falls for 14.3 days. Throughout May, 3.98" (101mm) of precipitation is accumulated.

What is the rainiest month in Riley?

May is the month with the most rainfall in Riley, Kansas. Rain falls for 14.3 days and accumulates 3.98" (101mm) of precipitation.

Does it snow in Riley in May?

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

When it does not snow in Riley?

In Riley, Kansas, snow does not fall in May through September.

How many hours of daylight does Riley have in May?

In Riley, the average length of the day in May is 14.4h.

How many hours of sunshine does Riley have in May?

In Riley, Kansas, the average sunshine in May is 9.1h.

How high is the UV index in May in Riley?

The average daily maximum UV index in May in Riley is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from the exposure to the Sun's UV rays.

Average temperature in May
Riley, KS

Average temperature in May - Riley, KS
  • Average high temperature in May: 73.2°F

The warmest month (with the highest average high temperature) is July (89.6°F).
The month with the lowest average high temperature is January (38.8°F).

  • Average low temperature in May: 55°F

The month with the highest average low temperature is July (69.8°F).
The coldest month (with the lowest average low temperature) is January (23°F).

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Average pressure in May
Riley, KS

Average pressure in May - Riley, KS
  • Average pressure in May: 29.91"

The month with the highest atmospheric pressure is January (30.16").
The month with the lowest atmospheric pressure is June (29.85").

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Average wind speed in May
Riley, KS

Average wind speed in May - Riley, KS
  • Average wind speed in May: 10.2mph

The windiest month (with the highest average wind speed) is April (11.8mph).
The calmest month (with the lowest average wind speed) is August (8.6mph).

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Average humidity in May
Riley, KS

Average humidity in May - Riley, KS
  • Average humidity in May: 74%

The month with the highest relative humidity is May (74%).
The month with the lowest relative humidity is October (64%).

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Average rainfall in May
Riley, KS

Average rainfall in May - Riley, KS
  • 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 January (0.63").

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Average rainfall days in May
Riley, KS

Average rainfall days in May - Riley, KS
  • Average rainfall days in May: 14.3 days

The month with the highest number of rainy days is May (14.3 days).
The month with the least rainy days is January (3.7 days).

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Average snowfall in May
Riley, KS

Average snowfall in May - Riley, KS
  • Average snowfall in May: 0"

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

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Average snowfall days in May
Riley, KS

Average snowfall days in May - Riley, KS
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is February (4.8 days).
Months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in May /
Average sunshine in May
Riley, KS

Average daylight in May / Average sunshine in May - Riley, KS
  • Average daylight in May: 14.4h

The month with the longest days is June (Average daylight: 14.9h).
The month with the shortest days is December (Average daylight: 9.4h).

  • Average sunshine in May: 9.1h

Months with the most sunshine are June and July (Average sunshine: 10.9h).
The month with the least sunshine is December (Average sunshine: 5.7h).

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Average sunshine days in May
Riley, KS

Average sunshine days in May - Riley, KS
  • Average sunshine days in May: 13.8 days

The month with the most sunshine days is January (23.5 days).
The month with the least sunshine days is May (13.8 days).

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Average UV index in May
Riley, KS

Average UV index in May - Riley, KS
  • Average UV index in May: 6

The month with the highest UV index is June (UV index 7).
Months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in May
Riley, KS

Average cloud cover in May - Riley, KS
  • Average cloud cover in May: 37

The month with the most cloud cover is March (Cloud cover 41).
The month with the least cloud cover is June (Cloud cover 22).

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Average visibility in May
Riley, KS

Average visibility in May - Riley, KS
  • Average visibility in May: 6mi

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

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