May weather forecast
Scottsdale, AZ

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A scenic waterfront canal running through Scottsdale, Arizona
A scenic waterfront canal running through Scottsdale, Arizona

Weather in May

In May, Scottsdale, Arizona residents witness a noticeable shift towards higher temperatures, hinting at the forthcoming summer. The clear, bright blue skies dominate the month with a low cloud cover of only 8%. Despite the rise in temperature, the humidity continues to drop, reaching the lowest value for the year. May offers the longest days thus far, providing ample daylight for any activities. The cooling winds provide a much-needed respite from the heat, with gusts reaching an annual high of 9.1mph (14.6km/h).

Temperature

With the onset of May, Scottsdale experiences a subtle temperature shift, with the average high-temperature moving from a moderately hot 82.6°F (28.1°C) in April to a hot 90.1°F (32.3°C). Compared to daytime temperatures, Scottsdale's temperature drops significantly, averaging a refreshing 67.1°F (19.5°C) during the nights of May.

Humidity

In May, the average relative humidity in Scottsdale is 19%.

Rainfall

In Scottsdale, in May, during 1.8 rainfall days, 0.12" (3mm) of precipitation is typically accumulated. Throughout the year, in Scottsdale, there are 57.7 rainfall days, and 7.72" (196mm) of precipitation is accumulated.

Daylight

The average length of the day in May in Scottsdale is 13h and 55min.
On the first day of May, sunrise is at 5:38 am and sunset at 7:11 pm. On the last day of the month, sunrise is at 5:18 am and sunset at 7:32 pm MST.

Sunshine

The average sunshine in May is 11.9h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 8. A UV Index of 8 to 10 symbolizes a very high health vulnerability from exposure to the Sun's UV rays for the average person.
Note: The maximum daily UV index of 8 in May interprets into the following recommendations:
Precautions are essential; the risk of damage to unprotected skin and eyes is too high. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. During bright days, sunglasses that offer UVA and UVB defense are recommended.

Frequently asked questions

How hot is it in Scottsdale in May?

Scottsdale in May has an average high-temperature of 90.1°F (32.3°C) and an average low-temperature of 67.1°F (19.5°C).

What is the average humidity in May in Scottsdale?

In Scottsdale, Arizona, the average relative humidity in May is 19%.

How many days does it rain in May in Scottsdale?

In Scottsdale, during May, the rain falls for 1.8 days and regularly aggregates up to 0.12" (3mm) of precipitation.

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

In May, the average day length in Scottsdale is 13h and 55min.

What time are sunrise and sunset in May in Scottsdale?

In May, on the first day of the month, sunrise is at 5:38 am and sunset at 7:11 pm. On the last day of the month, in Scottsdale, Arizona, sunrise is at 5:18 am and sunset at 7:32 pm MST.

How long on average sun shines in May in Scottsdale?

The average sunshine duration in May is 11.9h.

What is the month with the highest UV index in Scottsdale?

The months with the highest UV index are May through August, with an average maximum UV index of 8.

How high is the UV index in May in Scottsdale?

In May, the average daily maximum UV index is 8. A UV Index of 8 to 10 symbolizes a very high hazard to health from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Scottsdale, AZ

Average temperature in May - Scottsdale, AZ
  • Average high temperature in May: 90.1°F

The warmest month (with the highest average high temperature) is July (102.6°F).
The month with the lowest average high temperature is December (62.8°F).

  • Average low temperature in May: 67.1°F

The month with the highest average low temperature is August (84.4°F).
The coldest month (with the lowest average low temperature) is January (46.9°F).

Average pressure in May
Scottsdale, AZ

Average pressure in May - Scottsdale, AZ
  • Average pressure in May: 29.84"Hg

The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.81"Hg).

Average wind speed in May
Scottsdale, AZ

Average wind speed in May - Scottsdale, AZ
  • Average wind speed in May: 6.3mph

The windiest months (with the highest average wind speed) are April and May (6.3mph).
The calmest month (with the lowest average wind speed) is December (4.4mph).

Average humidity in May
Scottsdale, AZ

Average humidity in May - Scottsdale, AZ
  • Average humidity in May: 19%

The month with the highest relative humidity is December (44%).
The month with the lowest relative humidity is June (16%).

Average rainfall in May
Scottsdale, AZ

Average rainfall in May - Scottsdale, AZ
  • Average rainfall in May: 0.12"

The wettest month (with the highest rainfall) is July (1.14").
The driest month (with the least rainfall) is June (0.08").

Average rainfall days in May
Scottsdale, AZ

Average rainfall days in May - Scottsdale, AZ
  • Average rainfall days in May: 1.8 days

The month with the highest number of rainy days is July (10.2 days).
The month with the least rainy days is June (1 days).

Average daylight in May /
Average sunshine in May
Scottsdale, AZ

Average daylight in May / Average sunshine in May - Scottsdale, AZ
  • Average daylight in May: 13h and 5min

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in May: 11h and 5min

The months with the most sunshine are June and August (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 48min).

Average sunshine days in May
Scottsdale, AZ

Average sunshine days in May - Scottsdale, AZ
  • Average sunshine days in May: 28.7 days

The month with the most sunshine days is May (28.7 days).
The month with the least sunshine days is July (16.8 days).

Average UV index in May
Scottsdale, AZ

Average UV index in May - Scottsdale, AZ
  • Average UV index in May: 8

The months with the highest UV index are May, June, July and August (UV index 8).
The month with the lowest UV index is December (UV index 3).

Average cloud cover in May
Scottsdale, AZ

Average cloud cover in May - Scottsdale, AZ
  • Average cloud cover in May: 8

The month with the most cloud cover is December (Cloud cover 21).
The month with the least cloud cover is June (Cloud cover 5).

Average visibility in May
Scottsdale, AZ

Average visibility in May - Scottsdale, AZ
  • 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).

Scottsdale, Arizona, USA

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