Monthly weather forecast and climate
Bellingham, WA

Scenic landscape of hills and the sea in this small town in Bellingham, Washington
Scenic landscape of hills and the sea in this small town in Bellingham, Washington

Weather in January

January in Bellingham, Washington, is a frosty winter month, with average temperature varying between 35.8°F (2.1°C) and 43.5°F (6.4°C). In January, the average high-temperature is practically the same as in December - a frosty 43.5°F (6.4°C). Weather in January »

Weather in February

February, the last month of the winter, in Bellingham, is also a frosty month, with average temperature ranging between max 44.4°F (6.9°C) and min 35.2°F (1.8°C). In Bellingham, the average high-temperature is almost the same as in January - a still chilly 44.4°F (6.9°C). Weather in February »

Weather in March

March, the first month of the spring, in Bellingham, is still a chilly month, with temperature in the range of an average low of 37.4°F (3°C) and an average high of 48°F (8.9°C). In Bellingham, the average high-temperature is almost the same as in February - a still chilly 48°F (8.9°C). Weather in March »

Weather in April

April in Bellingham, Washington, is a cool spring month, with average temperature varying between 54°F (12.2°C) and 40.6°F (4.8°C). In April, the average high-temperature marginally rises, from a frosty 48°F (8.9°C) in March, to a fresh 54°F (12.2°C). Weather in April »

Weather in May

The last month of the spring, May, is a comfortable month in Bellingham, Washington, with temperature in the range of an average low of 45°F (7.2°C) and an average high of 61.3°F (16.3°C). In May, the average high-temperature slightly increases, from a cool 54°F (12.2°C) in April, to an enjoyable 61.3°F (16.3°C). Weather in May »

Weather in June

June, the first month of the summer, in Bellingham, is also an enjoyable month, with average temperature ranging between max 64.9°F (18.3°C) and min 48.7°F (9.3°C). In Bellingham, the average high-temperature in June is practically the same as in May - a still enjoyable 64.9°F (18.3°C). Weather in June »

Weather in July

July in Bellingham, Washington, is a pleasant summer month, with average temperature ranging between min 52.2°F (11.2°C) and max 70.3°F (21.3°C). The warmest months are July and August, with an average high-temperature of 70.3°F (21.3°C). Weather in July »

Weather in August

August, the last month of the summer, in Bellingham, is also an agreeable month, with average temperature fluctuating between 70.3°F (21.3°C) and 53.2°F (11.8°C). July and August, with an average high-temperature of 70.3°F (21.3°C), are the warmest months. Weather in August »

Weather in September

September, the first month of the autumn, in Bellingham, is still a comfortable month, with average temperature ranging between max 65.1°F (18.4°C) and min 50.7°F (10.4°C). In September, the average high-temperature is almost the same as in August - a comfortable 65.1°F (18.4°C). Weather in September »

Weather in October

October, like September, is another mild autumn month in Bellingham, Washington, with average temperature varying between 45.3°F (7.4°C) and 56.3°F (13.5°C). In October, the average high-temperature marginally drops, from an enjoyable 65.1°F (18.4°C) in September, to a moderate 56.3°F (13.5°C). Weather in October »

Weather in November

November, the last month of the autumn, in Bellingham, is also a frosty month, with temperature in the range of an average low of 40.1°F (4.5°C) and an average high of 47.3°F (8.5°C). In Bellingham, the average high-temperature in November decreases, from a moderate 56.3°F (13.5°C) in October, to a chilly 47.3°F (8.5°C). Weather in November »

Weather in December

December, the first month of the winter, in Bellingham, is still a cold month, with average temperature fluctuating between 34.9°F (1.6°C) and 41.9°F (5.5°C). December is the coldest month, with an average high-temperature of 41.9°F (5.5°C) and an average low-temperature of 34.9°F (1.6°C). Weather in December »
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FAQ

What is the most humid month in Bellingham?

With an average relative humidity of 84%, January is the most humid month in Bellingham.

How much does it rain in Bellingham?

Throughout the year, in Bellingham, there are 158 rainfall days, and 18.7" (475mm) of precipitation is accumulated.

When does it snow in Bellingham?

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

How much does it snow in Bellingham?

In Bellingham, during the entire year, snow falls for 9.4 days, and aggregates up to 4.65" (118mm) of snow.

What is the month with the least sunshine in Bellingham?

January and December, with an average of 4.2h of sunshine, are months with the least sunshine.

When is the lowest UV index in Bellingham?

Months with the lowest UV index in Bellingham, Washington, are January, February, November and December, with an average maximum UV index of 2.

When does it snow the most in Bellingham?

The month with the most snowfall is February when snow falls for 3.4 days and typically aggregates up to 1.81" (46mm) of snow.

What month is the ocean coldest in Bellingham?

The month with the coldest seawater in Bellingham, Washington, is February, with an average ocean temperature of 44.4°F (6.9°C).

When it does not snow in Bellingham?

May through October are months without snowfall in Bellingham, Washington.

When are the longest days in Bellingham?

With an average of 16.1h of daylight, June has the longest days of the year in Bellingham, Washington.

What is the warmest month in Bellingham?

July and August, with an average high-temperature of 70.3°F (21.3°C), are warmest months.

What is the least humid month in Bellingham?

July is the least humid month in Bellingham, with an average relative humidity of 74%.

What is the driest month in Bellingham?

The month with the least rainfall is July when the rain falls for 7.7 days and typically collects 0.55" (14mm) of precipitation.

What are the months with the most sunshine in Bellingham?

July and August, with an average of 10.5h of sunshine, are months with the most sunshine.

When is the highest UV index in Bellingham?

The month with the highest UV index in Bellingham, Washington, is July, with an average maximum UV index of 5.

What month is the ocean warmest in Bellingham?

The month with the warmest seawater is August, with an average ocean temperature of 53.2°F (11.8°C).

What is the rainiest month in Bellingham?

November is the month with the most rainfall in Bellingham, Washington. Rain falls for 16.1 days and accumulates 2.64" (67mm) of precipitation.

What is the coldest month in Bellingham?

The coldest month in Bellingham is December, with an average high-temperature of 41.9°F (5.5°C) and an average low-temperature of 34.9°F (1.6°C).

What is the month with the shortest days in Bellingham?

With an average of 8.4h of daylight, December has the shortest days of the year in Bellingham, Washington.

Average temperature
Bellingham, WA

Average temperature - Bellingham, WA

The warmest months (with the highest average high temperature) are July and August (70.3°F).
The month with the lowest average high temperature is December (41.9°F).

The month with the highest average low temperature is August (53.2°F).
The coldest month (with the lowest average low temperature) is December (34.9°F).

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Average pressure
Bellingham, WA

Average pressure - Bellingham, WA

The month with the highest atmospheric pressure is January (30.08").
The month with the lowest atmospheric pressure is March (30").

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Average wind speed
Bellingham, WA

Average wind speed - Bellingham, WA

The windiest month (with the highest average wind speed) is November (6.2mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).

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Average rainfall
Bellingham, WA

Average rainfall - Bellingham, WA

The wettest month (with the highest rainfall) is November (2.64").
The driest month (with the least rainfall) is July (0.55").

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Average rainfall days
Bellingham, WA

Average rainfall days - Bellingham, WA

The month with the highest number of rainy days is March (17.3 days).
The month with the least rainy days is August (7.1 days).

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Average snowfall
Bellingham, WA

Average snowfall - Bellingham, WA

The month with the highest snowfall is February (1.81").
Months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days
Bellingham, WA

Average snowfall days - Bellingham, WA

The month with the highest number of snowfall days is February (3.4 days).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average sea temperature
Bellingham, WA

Average sea temperature - Bellingham, WA

The best month for swimming (with the highest average sea temperature) is August (53.2°F).
The coldest month (with the lowest average sea temperature) is February (44.5°F).

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Average daylight / Average sunshine
Bellingham, WA

Average daylight / Average sunshine - Bellingham, WA

The month with the longest days is June (Average daylight: 16.1h).
The month with the shortest days is December (Average daylight: 8.4h).

Months with the most sunshine are July and August (Average sunshine: 10.5h).
Months with the least sunshine are January and December (Average sunshine: 4.2).

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Average sunshine days
Bellingham, WA

Average sunshine days - Bellingham, WA

The month with the most sunshine days is July (22.3 days).
The month with the least sunshine days is April (10.8 days).

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Average visibility
Bellingham, WA

Average visibility - Bellingham, WA

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

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