Climate and monthly weather forecast
Tualatin, OR

Weather in January

January, like December, is a frosty winter month in Tualatin, Oregon, with an average temperature fluctuating between 46.2°F (7.9°C) and 34.9°F (1.6°C). In January, the average high-temperature is practically the same as in December - a still chilly 46.2°F (7.9°C). Weather in January »

Weather in February

February, the last month of the winter in Tualatin, is also a frosty month, with an average temperature fluctuating between 47.7°F (8.7°C) and 35.4°F (1.9°C). In Tualatin, the average high-temperature in February is practically the same as in January - a still frosty 47.7°F (8.7°C). Weather in February »

Weather in March

March, the first month of the spring in Tualatin, is a fresh month, with temperature in the range of an average low of 38.1°F (3.4°C) and an average high of 52.5°F (11.4°C). In Tualatin, the average high-temperature in March is practically the same as in February - a fresh 52.5°F (11.4°C). Weather in March »

Weather in April

April in Tualatin, Oregon, is a moderate spring month, with temperature in the range of an average low of 39.7°F (4.3°C) and an average high of 58.5°F (14.7°C). In April, the average high-temperature slightly increases from a fresh 52.5°F (11.4°C) in March to a moderate 58.5°F (14.7°C). Weather in April »

Weather in May

May, the last month of the spring in Tualatin, is a comfortable month, with an average temperature ranging between min 44.4°F (6.9°C) and max 67.1°F (19.5°C). In Tualatin, the average high-temperature in May marginally rises from a mild 58.5°F (14.7°C) in April to an enjoyable 67.1°F (19.5°C). Weather in May »

Weather in June

June, the first month of the summer in Tualatin, is an agreeable month, with an average temperature varying between 48.6°F (9.2°C) and 72.7°F (22.6°C). In June, the average high-temperature marginally rises from an enjoyable 67.1°F (19.5°C) in May to a pleasant 72.7°F (22.6°C). Weather in June »

Weather in July

July in Tualatin, Oregon, is a moderately hot summer month, with temperature in the range of an average low of 53.2°F (11.8°C) and an average high of 80.6°F (27°C). In July, the average high-temperature slightly increases from a pleasant 72.7°F (22.6°C) in June to a moderately hot 80.6°F (27°C). Weather in July »

Weather in August

The last month of the summer, August, is another warm month in Tualatin, Oregon, with an average temperature varying between 55°F (12.8°C) and 82°F (27.8°C). August is the warmest month, with an average high-temperature of 82°F (27.8°C) and an average low-temperature of 55°F (12.8°C). The average heat index in August is calculated to be 84.2°F (29°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a warm month in Tualatin, Oregon, with an average temperature ranging between min 52°F (11.1°C) and max 74.3°F (23.5°C). In Tualatin, Oregon, the average high-temperature in September slightly decreases from 82°F (27.8°C) in August to a still moderately hot 74.3°F (23.5°C). Weather in September »

Weather in October

October, like September, in Tualatin, Oregon, is another enjoyable autumn month, with an average temperature fluctuating between 61.5°F (16.4°C) and 45.5°F (7.5°C). In October, the average high-temperature decreases from a warm 74.3°F (23.5°C) in September to an enjoyable 61.5°F (16.4°C). Weather in October »

Weather in November

The last month of the autumn, November, is another cool month in Tualatin, Oregon, with an average temperature ranging between max 50.9°F (10.5°C) and min 39.9°F (4.4°C). In Tualatin, Oregon, the average high-temperature in November drops from a comfortable 61.5°F (16.4°C) in October to a fresh 50.9°F (10.5°C). Weather in November »

Weather in December

December, the first month of the winter in Tualatin, is still a chilly month, with an average temperature fluctuating between 34.5°F (1.4°C) and 44.1°F (6.7°C). December is the coldest month, with an average high-temperature of 44.1°F (6.7°C) and an average low-temperature of 34.5°F (1.4°C). Weather in December »
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FAQ

What is the most humid month in Tualatin?

The months with the highest humidity are January, February and December, with an average relative humidity of 84%.

How much does it rain in Tualatin?

In Tualatin, Oregon, during the entire year, the rain falls for 170.9 days and collects up to 30.67" (779mm) of precipitation.

When does it snow in Tualatin?

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

How much does it snow in Tualatin?

Throughout the year, in Tualatin, Oregon, there are 6.5 snowfall days, and 3.94" (100mm) of snow is accumulated.

What is the month with the lowest UV index in Tualatin?

The months with the lowest UV index in Tualatin, Oregon, are January, February, November and December, with an average maximum UV index of 2.

What is the snowiest month in Tualatin?

February is the month with the most snowfall. Snow falls for 2.3 days and accumulates 1.57" (40mm) of snow.

What is the month with the least sunshine in Tualatin?

The month with the least sunshine in Tualatin, Oregon, is February, with an average of 4.1h of sunshine.

When is Daylight Saving Time (DST) in Tualatin?

On Sunday, March 12. 2023, at 2:00 am, Daylight Saving Time starts in Tualatin, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 5. 2023, at 2:00 am, and the time zone reverts from PDT to PST.

When it does not snow in Tualatin?

In Tualatin, snow does not fall in April through October.

When are the longest days in Tualatin?

The month with the longest days is June, with an average of 15h and 37min of daylight.

What is the driest month in Tualatin?

July is the month with the least rainfall. Rain falls for 5 days and accumulates 0.31" (8mm) of precipitation.

When is the highest UV index in Tualatin?

With an average maximum UV index of 6, July is the month with the highest UV index.

What is the warmest month in Tualatin?

The warmest month in Tualatin is August, with an average high-temperature of 82°F (27.8°C) and an average low-temperature of 55°F (12.8°C).

What is the least humid month in Tualatin?

August is the least humid month, with an average relative humidity of 63%.

What month has the most sunshine in Tualatin?

August has the most sunshine of the year in Tualatin, Oregon, with an average of 11h of sunshine.

What is the coldest month in Tualatin?

With an average high-temperature of 44.1°F (6.7°C) and an average low-temperature of 34.5°F (1.4°C), December is the coldest month in Tualatin.

What is the rainiest month in Tualatin?

December is the month with the most rainfall. Rain falls for 18.9 days and accumulates 4.57" (116mm) of precipitation.

What is the month with the shortest days in Tualatin?

The month with the shortest days is December, with an average of 8h and 47min of daylight.

Average temperature
Tualatin, OR

Average temperature - Tualatin, OR

The warmest month (with the highest average high temperature) is August (82°F).
The month with the lowest average high temperature is December (44.1°F).

The month with the highest average low temperature is August (55°F).
The coldest month (with the lowest average low temperature) is December (34.5°F).

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Average pressure
Tualatin, OR

Average pressure - Tualatin, OR

The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).

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Average wind speed
Tualatin, OR

Average wind speed - Tualatin, OR

The windiest month (with the highest average wind speed) is January (5.5mph).
The calmest month (with the lowest average wind speed) is August (3.9mph).

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Average humidity
Tualatin, OR

Average humidity - Tualatin, OR

The months with the highest relative humidity are January, February and December (84%).
The month with the lowest relative humidity is August (63%).

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Average rainfall
Tualatin, OR

Average rainfall - Tualatin, OR

The wettest month (with the highest rainfall) is December (4.57").
The driest month (with the least rainfall) is July (0.31").

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Average rainfall days
Tualatin, OR

Average rainfall days - Tualatin, OR

The month with the highest number of rainy days is March (19.8 days).
The month with the least rainy days is August (4.8 days).

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Average snowfall
Tualatin, OR

Average snowfall - Tualatin, OR

The month with the highest snowfall is February (1.57").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days
Tualatin, OR

Average snowfall days - Tualatin, OR

The month with the highest number of snowfall days is February (2.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight / Average sunshine
Tualatin, OR

Average daylight / Average sunshine - Tualatin, OR

The month with the longest days is June (Average daylight: 15h and 37min).
The month with the shortest days is December (Average daylight: 8h and 47min).

The month with the most sunshine is August (Average sunshine: 11h and 0min).
The month with the least sunshine is February (Average sunshine: 4h and 6min).

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Average sunshine days
Tualatin, OR

Average sunshine days - Tualatin, OR

The month with the most sunshine days is July (25 days).
The month with the least sunshine days is February (8.6 days).

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Average UV index
Tualatin, OR

Average UV index - Tualatin, OR

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average visibility
Tualatin, OR

Average visibility - Tualatin, OR

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

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