Climate and monthly weather forecast
Coos Bay, OR

A unique sandy and rocky shore near a forest of pine trees in the Shore Acres State Park in Coos Bay, Oregon
A unique sandy and rocky shore near a forest of pine trees in the Shore Acres State Park in Coos Bay, Oregon

Weather in January

January is a fresh winter month in Coos Bay, Oregon, with an average temperature fluctuating between 50.5°F (10.3°C) and 42.4°F (5.8°C). In Coos Bay, the average high-temperature in January is almost the same as in December - a cool 50.5°F (10.3°C). Weather in January »

Weather in February

The last month of the winter, February, is also a fresh month in Coos Bay, Oregon, with an average temperature ranging between min 41.7°F (5.4°C) and max 50.5°F (10.3°C). In February, the average high-temperature remains the same as in January - a still fresh 50.5°F (10.3°C). Weather in February »

Weather in March

March, the first month of the spring in Coos Bay, is still a cool month, with an average temperature varying between 51.8°F (11°C) and 42.3°F (5.7°C). In Coos Bay, the average high-temperature in March is essentially the same as in February - a still fresh 51.8°F (11°C). Weather in March »

Weather in April

April, the same as March, is a cool spring month in Coos Bay, Oregon, with an average temperature fluctuating between 43.3°F (6.3°C) and 54.5°F (12.5°C). In April, the average high-temperature is relatively the same as in March - a still cool 54.5°F (12.5°C). Weather in April »

Weather in May

The last month of the spring, May, is a mild month in Coos Bay, Oregon, with an average temperature varying between 58.6°F (14.8°C) and 46.2°F (7.9°C). In May, the average high-temperature is almost the same as in April - a moderate 58.6°F (14.8°C). Weather in May »

Weather in June

June, the first month of the summer in Coos Bay, is a comfortable month, with an average temperature varying between 49.5°F (9.7°C) and 62.2°F (16.8°C). In June, the average high-temperature is practically the same as in May - an enjoyable 62.2°F (16.8°C). Weather in June »

Weather in July

July, the same as June, is another enjoyable summer month in Coos Bay, Oregon, with an average temperature ranging between min 52.2°F (11.2°C) and max 65.8°F (18.8°C). In July, the average high-temperature is almost the same as in June - a still comfortable 65.8°F (18.8°C). Weather in July »

Weather in August

The last month of the summer, August, is also an enjoyable month in Coos Bay, Oregon, with an average temperature ranging between max 66.9°F (19.4°C) and min 52.3°F (11.3°C). The warmest month is August, with an average high-temperature of 66.9°F (19.4°C) and an average low-temperature of 52.3°F (11.3°C). Weather in August »

Weather in September

September, the first month of the autumn in Coos Bay, is still a comfortable month, with temperature in the range of an average low of 51.6°F (10.9°C) and an average high of 65.8°F (18.8°C). In September, the average high-temperature is almost the same as in August - a still enjoyable 65.8°F (18.8°C). Weather in September »

Weather in October

October, the same as September, is another comfortable autumn month in Coos Bay, Oregon, with an average temperature varying between 61°F (16.1°C) and 49.3°F (9.6°C). In October, the average high-temperature is relatively the same as in September - a still enjoyable 61°F (16.1°C). Weather in October »

Weather in November

November, the last month of the autumn in Coos Bay, is also a fresh month, with an average temperature ranging between max 54.1°F (12.3°C) and min 45.5°F (7.5°C). In Coos Bay, Oregon, the average high-temperature in November marginally drops from a comfortable 61°F (16.1°C) in October to a cool 54.1°F (12.3°C). Weather in November »

Weather in December

December, the first month of the winter in Coos Bay, is also a frosty month, with an average temperature varying between 41.7°F (5.4°C) and 49.1°F (9.5°C). With an average high-temperature of 49.1°F (9.5°C) and an average low-temperature of 41.7°F (5.4°C), December is the coldest month. Weather in December »
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FAQ

How much does it rain in Coos Bay?

In Coos Bay, during the entire year, the rain falls for 153 days and collects up to 33.5" (851mm) of precipitation.

When does it snow in Coos Bay?

January, February and November are months with snowfall in Coos Bay, Oregon.

How much does it snow in Coos Bay?

In Coos Bay, during the entire year, snow falls for 0.7 days and aggregates up to 0.31" (8mm) of snow.

What are the months with the least sunshine in Coos Bay?

The months with the least sunshine in Coos Bay, Oregon, are January and February, with an average of 4.4h of sunshine.

What is the most humid month in Coos Bay?

February and August, with an average relative humidity of 84%, are most humid months in Coos Bay.

What is the snowiest month in Coos Bay?

The month with the most snowfall in Coos Bay is February, when snow falls for 0.3 days and typically aggregates up to 0.2" (5mm) of snow.

What is the month with the lowest UV index in Coos Bay?

The months with the lowest UV index are February and December, with an average maximum UV index of 2.

When it does not snow in Coos Bay?

March through October and December are months without snowfall in Coos Bay, Oregon.

When is Daylight Saving Time (DST) in Coos Bay?

On Sunday, March 13. 2022, at 2:00 am, Daylight Saving Time starts in Coos Bay, Oregon, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 6. 2022, at 2:00 am, and the time zone reverts from PDT to PST.

What is the least humid month in Coos Bay?

The months with the lowest humidity are April and October, with an average relative humidity of 81%.

When are the longest days in Coos Bay?

June has the longest days of the year, with an average of 15h and 21min of daylight.

What is the driest month in Coos Bay?

The month with the least rainfall in Coos Bay, Oregon, is July, when the rain falls for 3.6 days and typically collects 0.16" (4mm) of precipitation.

What month has the most sunshine in Coos Bay?

With an average of 10.8h of sunshine, July has the most sunshine of the year in Coos Bay.

What is the month with the highest UV index in Coos Bay?

The month with the highest UV index in Coos Bay, Oregon, is July, with an average maximum UV index of 5.

What is the warmest month in Coos Bay?

August is the warmest month, with an average high-temperature of 66.9°F (19.4°C) and an average low-temperature of 52.3°F (11.3°C).

What is the coldest month in Coos Bay?

December is the coldest month in Coos Bay, with an average high-temperature of 49.1°F (9.5°C) and an average low-temperature of 41.7°F (5.4°C).

What is the wettest month in Coos Bay?

December is the month with the most rainfall. Rain falls for 18.6 days and accumulates 5.87" (149mm) of precipitation.

What is the month with the shortest days in Coos Bay?

The month with the shortest days is December, with an average of 9h and 2min of daylight.

Average temperature
Coos Bay, OR

Average temperature - Coos Bay, OR

The warmest month (with the highest average high temperature) is August (66.9°F).
The month with the lowest average high temperature is December (49.1°F).

The month with the highest average low temperature is August (52.3°F).
The coldest months (with the lowest average low temperature) are February and December (41.7°F).

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Average pressure
Coos Bay, OR

Average pressure - Coos Bay, OR

The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is September (30.01"Hg).

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Average wind speed
Coos Bay, OR

Average wind speed - Coos Bay, OR

The windiest month (with the highest average wind speed) is March (9.1mph).
The calmest month (with the lowest average wind speed) is August (6.9mph).

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Average humidity
Coos Bay, OR

Average humidity - Coos Bay, OR

The months with the highest relative humidity are February and August (84%).
The months with the lowest relative humidity are April and October (81%).

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Average rainfall
Coos Bay, OR

Average rainfall - Coos Bay, OR

The wettest month (with the highest rainfall) is December (5.87").
The driest month (with the least rainfall) is July (0.16").

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Average rainfall days
Coos Bay, OR

Average rainfall days - Coos Bay, OR

The month with the highest number of rainy days is March (19.2 days).
The month with the least rainy days is August (3.5 days).

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Average snowfall
Coos Bay, OR

Average snowfall - Coos Bay, OR

The month with the highest snowfall is February (0.2").
The months with the least snowfall are March, April, May, June, July, August, September, October and December (0").

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Average snowfall days
Coos Bay, OR

Average snowfall days - Coos Bay, OR

The month with the highest number of snowfall days is February (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September and October (0 days).

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Average daylight / Average sunshine
Coos Bay, OR

Average daylight / Average sunshine - Coos Bay, OR

The month with the longest days is June (Average daylight: 15h and 21min).
The month with the shortest days is December (Average daylight: 9h and 2min).

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The months with the least sunshine are January and February (Average sunshine: 4h and 24min).

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Average sunshine days
Coos Bay, OR

Average sunshine days - Coos Bay, OR

The month with the most sunshine days is July (25.7 days).
The month with the least sunshine days is February (9.7 days).

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Average visibility
Coos Bay, OR

Average visibility - Coos Bay, OR

The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).

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