Oregon, USA
Long-term weather forecast
Long-term weather forecast

May weather forecast and climate
O'Brien, OR

May, the last month of the spring, in O'Brien, is a moderately hot month, with average temperature varying between 77°F (25°C) and 42.1°F (5.6°C).


In O'Brien, the average high-temperature rises, from an agreeable 68°F (20°C) in April, to a moderately hot 77°F (25°C). The average low-temperature, in O'Brien, Oregon, is 42.1°F (5.6°C).


Throughout May, 2.4" (61.5mm) of precipitation is accumulated. Throughout the year, in O'Brien, 63.2" (1605.3mm) of rain is accumulated.


In O'Brien snow does not fall through October.


The average length of the day in May in O'Brien, Oregon, is 14.6h.

What is the temperature in May in O'Brien?

In O'Brien, in May, the average high-temperature is 77°F (25°C), and the average low-temperature is 42.1°F (5.6°C).

How much does it rain in O'Brien in May?

Throughout May, in O'Brien, Oregon, 2.4" (61.5mm) of precipitation is accumulated.

Does it snow in O'Brien in May?

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

When it does not snow in O'Brien?

May through October are months without snowfall in O'Brien.

What is the average length of the day in May in O'Brien?

In O'Brien, the average length of the day in May is 14.6h.
Average temperature in May - O
  • Average high temperature in May: 77°F

Warmest months (with the highest average high temperature) are July and August (94°F).
The month with the lowest average high temperature is December (50°F).

  • Average low temperature in May: 42°F

The month with the highest average low temperature is July (52°F).
Coldest months (with the lowest average low temperature) are January and December (33°F).

Average rainfall in May - O
  • Average rainfall in May: 2.4"

The wettest month (with the highest rainfall) is December (13").
The driest month (with the lowest rainfall) is July (0.3").

Average snowfall in May - O
  • Average snowfall in May: 0"

The month with the highest snowfall is January (4.1").
Months with the lowest snowfall are May, June, July, August, September and October (0").

Average daylight in May - O
  • Average daylight in May: 14.6h

The month with the longest days is June (Average daylight: 15.2h).
The month with shortest days is December (Average daylight: 9.2h).