Portal
Arizona, USA
Long-term weather forecast
Long-term weather forecast

May weather forecast and climate
Portal, AZ

The last month of the spring, May, is also a moderately hot month in Portal, Arizona, with temperature in the range of an average low of 45.9°F (7.7°C) and an average high of 81.9°F (27.7°C).

Temperature

In Portal, the average high-temperature in May slightly increases, from 74.7°F (23.7°C) in April, to a still moderately hot 81.9°F (27.7°C). The average low-temperature, in May, is 45.9°F (7.7°C).

Rainfall

The month with the least rainfall is May when the rain falls for 2 days and typically collects 0.3" (8.4mm) of precipitation.

Snowfall

In May, it doesn't snow. April is the latest month when it typically snows. In Portal, during the entire year, snow aggregates up to 9.7" (246.3mm).

Daylight

In Portal, the average length of the day in May is 13.8h.

What is the temperature in May in Portal?

The average high-temperature, in May, is 81.9°F (27.7°C), while the average low-temperature is 45.9°F (7.7°C).

How much does it rain in Portal in May?

In May, the rain falls for 2 days. Throughout May, 0.3" (8.4mm) of precipitation is accumulated.

What is the driest month in Portal?

May is the month with the least rainfall. Rain falls for 2 days and accumulates 0.3" (8.4mm) of precipitation.

Does it snow in Portal in May?

In May, it doesn't snow. April is the latest month when it typically snows.

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

The average length of the day in May in Portal, Arizona, is 13.8h.
Average temperature in May - Portal, AZ
  • Average high temperature in May: 81.8°F

The warmest month (with the highest average high temperature) is June (90.7°F).
The month with the lowest average high temperature is January (55°F).

  • Average low temperature in May: 45.8°F

The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (27.4°F).

Average rainfall in May - Portal, AZ
  • Average rainfall in May: 0.3"

The wettest month (with the highest rainfall) is August (3.7").
The driest month (with the lowest rainfall) is May (0.3").

Average rainfall days in May - Portal, AZ
  • Average rainfall days in May: 2 days

Months with the highest number of rainy days are July and August (10 days).
The month with the lowest number of rainy days is May (2 days).

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

The month with the highest snowfall is January (3.4").
Months with the lowest snowfall are May, June, July, August and September (0").

Average daylight in May - Portal, AZ
  • Average daylight in May: 13.8h

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