May weather forecast
Oro Valley, AZ

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Weather in May

May in Oro Valley marks the onset of warm summer days, and the transition is quite pronounced. The weather turns significantly hotter with the maximum temperature recorded at an overwhelming 84.7°F (29.3°C), a steep climb from April's 77°F (25°C). The stark increase in sunshine duration lets locals make the most of the outdoors. Yet, the humidity drops to its lowest, ensuring comfort amidst the rising temperature. Rainfall is noticeably scanty, marking a clear shift towards dry summer days.

Temperature

Oro Valley's weather in May shows a minor rise in the average high-temperature, moving slightly up from April's warm 77°F (25°C) to a still moderately hot 84.7°F (29.3°C). Oro Valley experiences a dramatic descent in temperature during May, with the average nighttime reading settling at a refreshing 60.4°F (15.8°C).

Humidity

The average relative humidity in May in Oro Valley is 21%.

Rainfall

April and May are months with the least rain in Oro Valley, Arizona, when the rain falls for 2.6 days and typically aggregates up to 0.24" (6mm) of rain.

Snowfall

In Oro Valley, Arizona, snow does not fall in January, March through December.

Daylight

The average length of the day in May in Oro Valley is 13h and 50min.
On the first day of the month, sunrise is at 5:36 am and sunset at 7:05 pm. On the last day of May, in Oro Valley, sunrise is at 5:17 am and sunset at 7:25 pm MST.

Sunshine

In Oro Valley, the average sunshine in May is 11.9h.

UV index

In Oro Valley, the average daily maximum UV index in May is 7. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for the average person.
Note: In May, a regular UV index of 7 translates into these guidelines:
Eschew overexposure. Those with light skin may suffer burns in fewer than 20 minutes. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
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Frequently asked questions

Is it hot in Oro Valley during May?

Oro Valley in May has an average high-temperature of 84.7°F (29.3°C) and an average low-temperature of 60.4°F (15.8°C).

What is the average humidity in May in Oro Valley?

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

What is the driest month in Oro Valley?

The months with the least rainfall in Oro Valley, Arizona, are April and May Rain falls for 2.6 days and accumulates 0.24" (6mm) of rain.

How much does it rain in Oro Valley in May?

In May, in Oro Valley, Arizona, the rain falls for 2.6 days. Throughout May, 0.24" (6mm) of precipitation is accumulated.

When it does not snow in Oro Valley?

January, March through December are months without snowfall.

How many hours of daylight does Oro Valley have in May?

In Oro Valley, the average day length in May is 13h and 50min.

When are sunrise and sunset in May in Oro Valley?

In May, on the first day of the month, sunrise is at 5:36 am and sunset at 7:05 pm. On the last day of the month, in Oro Valley, Arizona, sunrise is at 5:17 am and sunset at 7:25 pm MST.

How long on average sun shines in May in Oro Valley?

In May, the average sunshine duration is 11.9h.

What is the UV index reading in May in Oro Valley?

The average daily maximum UV index in May in Oro Valley, Arizona, is 7. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to Sun's UV rays.
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
Oro Valley, AZ

Average temperature in May - Oro Valley, AZ
  • Average high temperature in May: 84.7°F

The warmest month (with the highest average high temperature) is June (95.5°F).
The month with the lowest average high temperature is December (60.1°F).

  • Average low temperature in May: 60.4°F

The months with the highest average low temperature are July and August (76.6°F).
The coldest month (with the lowest average low temperature) is December (42.8°F).

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Average pressure in May
Oro Valley, AZ

Average pressure in May - Oro Valley, 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
Oro Valley, AZ

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

The windiest month (with the highest average wind speed) is May (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).

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Average humidity in May
Oro Valley, AZ

Average humidity in May - Oro Valley, AZ
  • Average humidity in May: 21%

The month with the highest relative humidity is December (46%).
The month with the lowest relative humidity is June (20%).

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Average rainfall in May
Oro Valley, AZ

Average rainfall in May - Oro Valley, AZ
  • Average rainfall in May: 0.24"

The wettest month (with the highest rainfall) is July (2.68").
The driest months (with the least rainfall) are April and May (0.24").

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Average rainfall days in May
Oro Valley, AZ

Average rainfall days in May - Oro Valley, AZ
  • Average rainfall days in May: 2.6 days

The month with the highest number of rainy days is July (16.8 days).
The month with the least rainy days is May (2.6 days).

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Average snowfall in May
Oro Valley, AZ

Average snowfall in May - Oro Valley, AZ
  • Average snowfall in May: 0"

The month with the highest snowfall is February (0.31").
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").

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Average snowfall days in May
Oro Valley, AZ

Average snowfall days in May - Oro Valley, AZ
  • Average snowfall days in May: 0 days

The months with the highest number of snowfall days are January and February (0.2 days).
The months with the least snowfall days are 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
Oro Valley, AZ

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

The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).

  • Average sunshine in May: 11h and 5min

The months with the most sunshine are June and August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).

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Average sunshine days in May
Oro Valley, AZ

Average sunshine days in May - Oro Valley, AZ
  • Average sunshine days in May: 28.1 days

The month with the most sunshine days is May (28.1 days).
The month with the least sunshine days is July (10 days).

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Average UV index in May
Oro Valley, AZ

Average UV index in May - Oro Valley, AZ
  • Average UV index in May: 7

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

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Average cloud cover in May
Oro Valley, AZ

Average cloud cover in May - Oro Valley, AZ
  • Average cloud cover in May: 8

The months with the most cloud cover are July and December (Cloud cover 21).
The months with the least cloud cover are May and June (Cloud cover 8).

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Average visibility in May
Oro Valley, AZ

Average visibility in May - Oro Valley, 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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Oro Valley, Arizona, USA

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