May weather forecast
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 temperature in the range of an average low of 60.4°F (15.8°C) and an average high of 85.5°F (29.7°C).

Temperature

In May, 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 Tucson, the average low-temperature is 60.4°F (15.8°C).

Humidity

The average relative humidity in May 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

February through December are months without snowfall.

Daylight

In Tucson, the average length of the day in May is 13h and 49min.
On the first day of May in Tucson, sunrise is at 5:37 am and sunset at 7:04 pm. On the last day of the month, sunrise is at 5:18 am and sunset at 7:24 pm MST.

Sunshine

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

UV index

The average daily maximum UV index in May is 7. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: In May, the average maximum UV index of 7 translate into the following recommendations:
Take precautions against overexposure. Protection against sun damage is needed. 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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in May in Tucson?

The average high-temperature, in May, in Tucson, Arizona, is 85.5°F (29.7°C), while the average low-temperature is 60.4°F (15.8°C).

What is the average humidity in May in Tucson?

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

What is the driest month in Tucson?

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

How much does it rain in Tucson in May?

In Tucson, Arizona, in May, it is raining for 1.3 days, with typically 0.08" (2mm) of accumulated precipitation.

When it does not snow in Tucson?

February through December are months without snowfall in Tucson, Arizona.

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

The average day length in May is 13h and 49min.

When is the sunrise / sunset in May in Tucson?

In May, on the first day of the month, sunrise is at 5:37 am and sunset at 7:04 pm. On the last day of the month, in Tucson, sunrise is at 5:18 am and sunset at 7:24 pm MST.

How long on average sun shines in May in Tucson?

The average sunshine duration in May in Tucson, Arizona, is 12h.

What is the UV index reading in May in Tucson?

The average daily maximum UV index in May in Tucson is 7. A UV Index of 6 to 7 symbolizes a high hazard to health from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

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"Hg

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

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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").
The 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).
The 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: 13h and 49min

The month with the longest days is June (Average daylight: 14h and 14min).
The month with the shortest days is December (Average daylight: 10h and 5min).

  • Average sunshine in May: 12h and 0min

The month with the most sunshine is August (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 7h and 0min).

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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).
The 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).
The 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

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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