O'Brien
Oregon, USA
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
O'Brien, OR

January, the same as December, is a cool winter month in O'Brien, Oregon, with average temperature ranging between max 51.1°F (10.6°C) and min 33.1°F (0.6°C). In January, the average high-temperature is relatively the same as in December - a still cool 51.1°F (10.6°C). Weather in January »
February, the last month of the winter, in O'Brien, is a moderate month, with average temperature varying between 34°F (1.1°C) and 57°F (13.9°C). In February, the average high-temperature marginally rises, from a cool 51.1°F (10.6°C) in January, to a moderate 57°F (13.9°C). Weather in February »

March, the first month of the spring, in O'Brien, is a comfortable month, with temperature in the range of an average low of 36°F (2.2°C) and an average high of 62.1°F (16.7°C). In March, the average high-temperature is relatively the same as in February - a comfortable 62.1°F (16.7°C). Weather in March »

April is an agreeable spring month in O'Brien, Oregon, with temperature in the range of an average high of 68°F (20°C) and an average low of 37°F (2.8°C). In April, the average high-temperature marginally rises, from a comfortable 62.1°F (16.7°C) in March, to an agreeable 68°F (20°C). Weather in April »

The last month of the spring, May, is a moderately hot month in O'Brien, Oregon, with temperature in the range of an average low of 42.1°F (5.6°C) and an average high of 77°F (25°C). In May, the average high-temperature increases, from an agreeable 68°F (20°C) in April, to a warm 77°F (25°C). Weather in May »

June, the first month of the summer, in O'Brien, is still a warm month, with temperature in the range of an average low of 46.9°F (8.3°C) and an average high of 84.9°F (29.4°C). In O'Brien, the average high-temperature marginally rises, from 77°F (25°C) in May, to a still warm 84.9°F (29.4°C). Weather in June »

July in O'Brien, Oregon, is a tropical summer month, with average temperature ranging between max 93.9°F (34.4°C) and min 52°F (11.1°C). The warmest months are July and August, with an average high-temperature of 93.9°F (34.4°C). Weather in July »

The last month of the summer, August, is also a hot month in O'Brien, Oregon, with temperature in the range of an average high of 93.9°F (34.4°C) and an average low of 50°F (10°C). July and August, with an average high-temperature of 93.9°F (34.4°C), are the warmest months. Weather in August »

The first month of the autumn, September, is still a tropical month in O'Brien, Oregon, with temperature in the range of an average low of 45°F (7.2°C) and an average high of 88°F (31.1°C). In September, the average high-temperature marginally drops, from a tropical 93.9°F (34.4°C) in August, to a still hot 88°F (31.1°C). Weather in September »

October, the same as September, is a moderately hot autumn month in O'Brien, Oregon, with average temperature fluctuating between 39°F (3.9°C) and 73.9°F (23.3°C). In O'Brien, Oregon, the average high-temperature in October drops, from a tropical 88°F (31.1°C) in September, to a moderately hot 73.9°F (23.3°C). Weather in October »

November, the last month of the autumn, in O'Brien, is also a moderate month, with average temperature ranging between min 37°F (2.8°C) and max 57°F (13.9°C). In November, the average high-temperature plummets, from a moderately hot 73.9°F (23.3°C) in October, to a mild 57°F (13.9°C). Weather in November »

The first month of the winter, December, is also a fresh month in O'Brien, Oregon, with average temperature varying between 33.1°F (0.6°C) and 50°F (10°C). December is the coldest month, with an average high-temperature of 50°F (10°C) and an average low-temperature of 33.1°F (0.6°C). Weather in December »

How much does it rain in O'Brien?

During the entire year, O'Brien aggregates up to 63.2" (1605.3mm) of precipitation.

When does it snow in O'Brien?

Months with snowfall are January through April, November and December.

How much does it snow in O'Brien?

In O'Brien, Oregon, during the entire year, snow aggregates up to 11.7" (297.2mm).

When does it snow the most in O'Brien?

January is the month with the most snowfall in O'Brien, Oregon, with 4.1" (104.1mm) of accumulated snow.

When are the longest days in O'Brien?

June has the longest days of the year in O'Brien, with an average of 15.2h of daylight.

What are the warmest months in O'Brien?

July and August, with an average high-temperature of 93.9°F (34.4°C), are warmest months.

What is the driest month in O'Brien?

July is the month with the least rainfall in O'Brien, with 0.3" (7.1mm) of accumulated precipitation.

What is the coldest month in O'Brien?

With an average high-temperature of 50°F (10°C) and an average low-temperature of 33.1°F (0.6°C), December is the coldest month.

What is the wettest month in O'Brien?

December is the month with the most rainfall in O'Brien, with 13" (330.2mm) of accumulated precipitation.

What is the month with the shortest days in O'Brien?

With an average of 9.2h of daylight, December has the shortest days of the year.
Average rainfall - O
Average snowfall - O
Average daylight - O

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