May weather forecast
Derby, KS

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Weather in May

The weather in May signals an unmistakable transition to summer in Derby, Kansas. Temperatures range from 57°F (13.9°C) to a considerable 75.4°F (24.1°C) high. Rain is abundantly prevalent in May, with the month receiving 4.65" (118mm) of rainfall, the highest in the year. Days become significantly longer, with an average of 14.2 daylight hours, thus allowing ample time for festivities and outdoor activities. The frequency of bright, sunny days increases, providing May with a vibrant aura.

Temperature

A slight uplift in the average high-temperature marks May in Derby, adjusting from April's refreshing 66.9°F (19.4°C) to a warm 75.4°F (24.1°C). May in Derby witnesses an average low-temperature hovering around a moderate 57°F (13.9°C).

Humidity

With an average relative humidity of 73%, May is the most humid month.

Rainfall

The month with the most rainfall is May, when the rain falls for 16.4 days and typically aggregates up to 4.65" (118mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Derby. May is the last month it regularly snows in Derby. During 0.1 snowfall days, in May, Derby aggregates 0.04" (1mm) of snow. In Derby, during the entire year, snow falls for 16.1 days and aggregates up to 6.57" (167mm) of snow.

Daylight

In May, the average length of the day in Derby is 14h and 13min.
On the first day of May, sunrise is at 6:32 am and sunset at 8:19 pm. On the last day of the month, sunrise is at 6:09 am and sunset at 8:44 pm CDT.

Sunshine

In May, the average sunshine is 9.3h.

UV index

In Derby, the average daily maximum UV index in May is 6. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: A maximum high daily UV index of 6 during May translates into the following directions:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
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Frequently asked questions

What is the average May temperature in Derby?

In May, in Derby, the average high-temperature is 75.4°F (24.1°C), and the average low-temperature is 57°F (13.9°C).

What is the most humid month in Derby?

May is the most humid month in Derby, with an average relative humidity of 73%.

What is the average humidity in May in Derby?

The average relative humidity in May in Derby is 73%.

What is the wettest month in Derby?

May is the month with the most rainfall in Derby. Rain falls for 16.4 days and accumulates 4.65" (118mm) of precipitation.

How many days does it rain in May in Derby?

In Derby, Kansas, during May, the rain falls for 16.4 days and regularly aggregates up to 4.65" (118mm) of precipitation.

What is the last month it snows in Derby?

May is the last month it regularly snows. During 0.1 snowfall days, in May, Derby aggregates 0.04" (1mm) of snow.

How many hours of daylight does Derby have in May?

In May, the average day length is 14h and 13min.

When is the sunrise / sunset in May in Derby?

On the first day of May in Derby, sunrise is at 6:32 am and sunset at 8:19 pm. On the last day of the month, sunrise is at 6:09 am and sunset at 8:44 pm CDT.

How many hours of sunshine does Derby have in May?

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

What is the UV index reading in May in Derby?

In May, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability 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
Derby, KS

Average temperature in May - Derby, KS
  • Average high temperature in May: 75.4°F

The warmest month (with the highest average high temperature) is July (91.9°F).
The month with the lowest average high temperature is January (43.3°F).

  • Average low temperature in May: 57°F

The month with the highest average low temperature is July (72.3°F).
The coldest month (with the lowest average low temperature) is January (26.6°F).

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Average pressure in May
Derby, KS

Average pressure in May - Derby, KS
  • Average pressure in May: 29.9"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).

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Average wind speed in May
Derby, KS

Average wind speed in May - Derby, KS
  • Average wind speed in May: 10.5mph

The windiest month (with the highest average wind speed) is April (12.2mph).
The calmest month (with the lowest average wind speed) is August (8.7mph).

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Average humidity in May
Derby, KS

Average humidity in May - Derby, KS
  • Average humidity in May: 73%

The month with the highest relative humidity is May (73%).
The months with the lowest relative humidity are July and October (62%).

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Average rainfall in May
Derby, KS

Average rainfall in May - Derby, KS
  • Average rainfall in May: 4.65"

The wettest month (with the highest rainfall) is May (4.65").
The driest month (with the least rainfall) is January (0.83").

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Average rainfall days in May
Derby, KS

Average rainfall days in May - Derby, KS
  • Average rainfall days in May: 16.4 days

The month with the highest number of rainy days is May (16.4 days).
The month with the least rainy days is January (4.4 days).

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Average snowfall in May
Derby, KS

Average snowfall in May - Derby, KS
  • Average snowfall in May: 0.04"

The month with the highest snowfall is February (2.28").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Derby, KS

Average snowfall days in May - Derby, KS
  • Average snowfall days in May: 0.1 days

The month with the highest number of snowfall days is February (4.7 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
Derby, KS

Average daylight in May / Average sunshine in May - Derby, KS
  • 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 36min).

  • Average sunshine in May: 9h and 2min

The month with the most sunshine is June (Average sunshine: 11h and 6min).
The month with the least sunshine is January (Average sunshine: 6h and 6min).

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Average sunshine days in May
Derby, KS

Average sunshine days in May - Derby, KS
  • Average sunshine days in May: 12.6 days

The month with the most sunshine days is January (22.8 days).
The month with the least sunshine days is May (12.6 days).

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Average UV index in May
Derby, KS

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

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

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Average cloud cover in May
Derby, KS

Average cloud cover in May - Derby, KS
  • Average cloud cover in May: 35

The month with the most cloud cover is March (Cloud cover 39).
The month with the least cloud cover is August (Cloud cover 20).

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Average visibility in May
Derby, KS

Average visibility in May - Derby, KS
  • 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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Derby, Kansas, USA

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