May weather forecast and climate
Tucson, AZ

Sunset in downtown Tucson, Arizona with a skyline and a sentinel peak in the distance
Sunset in downtown Tucson, Arizona with a skyline and a sentinel peak in the distance

Weather in May

May, the last month of the spring, in Tucson, is also a moderately hot month, with average temperature ranging between min 60.4°F (15.8°C) and max 85.5°F (29.7°C).

Temperature

In Tucson, the average high-temperature slightly increases, from 78.3°F (25.7°C) in April, to a still warm 85.5°F (29.7°C). In May, in Tucson, the average low-temperature is 60.4°F (15.8°C).

Humidity

The average relative humidity in Tucson is 21%.

Rainfall

The month with the least rainfall is May when the rain falls for 1.3 days and typically collects 0.08" (2mm) of precipitation.

Snowfall

In Tucson snow does not fall in February through December.

Daylight

In Tucson, the average length of the day is 13.8h.

Sunshine

In Tucson, the average sunshine in May is 12h.

UV index

In Tucson, the average daily maximum UV index is 7. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to the Sun's UV rays for average individuals.
Note: The daily maximum UV index of 7 in May interpret into the following advice:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. 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 Tucson?

In May, the average high-temperature is 85.5°F (29.7°C), and the average low-temperature is 60.4°F (15.8°C).

What is the average humidity in May in Tucson?

In May, the average relative humidity in Tucson, Arizona, is 21%.

How much does it rain in Tucson in May?

In May, in Tucson, Arizona, the rain falls for 1.3 days. Throughout May, 0.08" (2mm) of precipitation is accumulated.

What is the driest month in Tucson?

May is the month with the least rainfall in Tucson, Arizona. Rain falls for 1.3 days and accumulates 0.08" (2mm) of precipitation.

When it does not snow in Tucson?

In Tucson snow does not fall in February through December.

How many hours of daylight does Tucson have in May?

The average length of the day in May in Tucson is 13.8h.

How many hours of sunshine does Tucson have in May?

The average sunshine in May is 12h.

How high is the UV index in May in Tucson?

In Tucson, Arizona, the average daily maximum UV index in May is 7. 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
Tucson, AZ

Average temperature in May - Tucson, AZ
  • Average high temperature in May: 85.5°F

The warmest month (with the highest average high temperature) is June (96.6°F).
The month with the lowest average high temperature is December (60.8°F).

  • Average low temperature in May: 60.4°F

The month with the highest average low temperature is July (77°F).
The coldest months (with the lowest average low temperature) are January and December (43°F).

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Average pressure in May
Tucson, AZ

Average pressure in May - Tucson, AZ
  • Average pressure in May: 29.86"

The month with the highest atmospheric pressure is January (30.08").
The month with the lowest atmospheric pressure is June (29.83").

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Average wind speed in May
Tucson, AZ

Average wind speed in May - Tucson, AZ
  • Average wind speed in May: 8.1mph

The windiest months (with the highest average wind speed) are April and May (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

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Average humidity in May
Tucson, AZ

Average humidity in May - Tucson, AZ
  • Average humidity in May: 21%

The month with the highest relative humidity is December (45%).
The month with the lowest relative humidity is June (19%).

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Average rainfall in May
Tucson, AZ

Average rainfall in May - Tucson, AZ
  • Average rainfall in May: 0.08"

The wettest month (with the highest rainfall) is July (1.42").
The driest month (with the least rainfall) is May (0.08").

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Average rainfall days in May
Tucson, AZ

Average rainfall days in May - Tucson, AZ
  • Average rainfall days in May: 1.3 days

The month with the highest number of rainy days is July (13.3 days).
The month with the least rainy days is May (1.3 days).

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Average snowfall in May
Tucson, AZ

Average snowfall in May - Tucson, AZ
  • Average snowfall in May: 0"

The month with the highest snowfall is January (0.08").
Months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").

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Average snowfall days in May
Tucson, AZ

Average snowfall days in May - Tucson, AZ
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (0.2 days).
Months with the least snowfall days are February, March, April, May, June, July, August, September, October, November and December (0 days).

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

Average daylight in May / Average sunshine in May - Tucson, AZ
  • Average daylight in May: 13.8h

The month with the longest days is June (Average daylight: 14.2h).
The month with the shortest days is December (Average daylight: 10.1h).

  • Average sunshine in May: 12h

The month with the most sunshine is August (Average sunshine: 12.2h).
The month with the least sunshine is December (Average sunshine: 7h).

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Average sunshine days in May
Tucson, AZ

Average sunshine days in May - Tucson, AZ
  • Average sunshine days in May: 29.3 days

The month with the most sunshine days is May (29.3 days).
The month with the least sunshine days is July (13.3 days).

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Average UV index in May
Tucson, AZ

Average UV index in May - Tucson, AZ
  • Average UV index in May: 7

The month with the highest UV index is June (UV index 8).
Months with the lowest UV index are November and December (UV index 3).

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Average cloud cover in May
Tucson, AZ

Average cloud cover in May - Tucson, AZ
  • Average cloud cover in May: 7

The month with the most cloud cover is December (Cloud cover 19).
Months with the least cloud cover are May and June (Cloud cover 7).

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Average visibility in May
Tucson, AZ

Average visibility in May - Tucson, AZ
  • 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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