Climate and monthly weather forecast
Troutdale, OR

Weather in January

January, the same as December, in Troutdale, Oregon, is a frosty winter month, with an average temperature ranging between max 45°F (7.2°C) and min 34.3°F (1.3°C). In January, the average high-temperature is essentially the same as in December - a still frosty 45°F (7.2°C). Weather in January »

Weather in February

The last month of the winter, February, is also a frosty month in Troutdale, Oregon, with temperature in the range of an average high of 45.9°F (7.7°C) and an average low of 34.5°F (1.4°C). In Troutdale, the average high-temperature in February is practically the same as in January - a still frosty 45.9°F (7.7°C). Weather in February »

Weather in March

The first month of the spring, March, is a fresh month in Troutdale, Oregon, with temperature in the range of an average high of 50.9°F (10.5°C) and an average low of 36.5°F (2.5°C). In March, the average high-temperature is practically the same as in February - a cool 50.9°F (10.5°C). Weather in March »

Weather in April

April is a moderate spring month in Troutdale, Oregon, with temperature in the range of an average low of 38.8°F (3.8°C) and an average high of 56.8°F (13.8°C). In Troutdale, Oregon, the average high-temperature in April slightly increases from a cool 50.9°F (10.5°C) in March to a mild 56.8°F (13.8°C). Weather in April »

Weather in May

May, the last month of the spring in Troutdale, is a comfortable month, with temperature in the range of an average high of 65.8°F (18.8°C) and an average low of 42.6°F (5.9°C). In May, the average high-temperature increases from a mild 56.8°F (13.8°C) in April to a comfortable 65.8°F (18.8°C). Weather in May »

Weather in June

June, the first month of the summer in Troutdale, is an agreeable month, with temperature in the range of an average low of 46.4°F (8°C) and an average high of 70.7°F (21.5°C). In Troutdale, the average high-temperature in June is essentially the same as in May - an agreeable 70.7°F (21.5°C). Weather in June »

Weather in July

July in Troutdale, Oregon, is a warm summer month, with temperature in the range of an average high of 78.4°F (25.8°C) and an average low of 50°F (10°C). In July, the average high-temperature slightly increases from an agreeable 70.7°F (21.5°C) in June to a warm 78.4°F (25.8°C). Weather in July »

Weather in August

August, the last month of the summer in Troutdale, is also a moderately hot month, with an average temperature fluctuating between 52.7°F (11.5°C) and 79.7°F (26.5°C). August is the warmest month, with an average high-temperature of 79.7°F (26.5°C) and an average low-temperature of 52.7°F (11.5°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a pleasant month in Troutdale, Oregon, with temperature in the range of an average low of 49.5°F (9.7°C) and an average high of 72.5°F (22.5°C). In September, the average high-temperature marginally drops from a moderately hot 79.7°F (26.5°C) in August to a pleasant 72.5°F (22.5°C). Weather in September »

Weather in October

October, the same as September, in Troutdale, Oregon, is a moderate autumn month, with an average temperature ranging between min 44.6°F (7°C) and max 60.4°F (15.8°C). In Troutdale, the average high-temperature in October drops from a pleasant 72.5°F (22.5°C) in September to a moderate 60.4°F (15.8°C). Weather in October »

Weather in November

November, the last month of the autumn in Troutdale, is also a fresh month, with an average temperature fluctuating between 38.8°F (3.8°C) and 50°F (10°C). In Troutdale, Oregon, the average high-temperature in November decreases from a moderate 60.4°F (15.8°C) in October to a fresh 50°F (10°C). Weather in November »

Weather in December

December, the first month of the winter in Troutdale, is also a frosty month, with an average temperature fluctuating between 33.3°F (0.7°C) and 43.3°F (6.3°C). With an average high-temperature of 43.3°F (6.3°C) and an average low-temperature of 33.3°F (0.7°C), December is the coldest month. Weather in December »
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FAQ

How many days does it rain in Troutdale?

Throughout the year, in Troutdale, Oregon, there are 171 rainfall days, and 37.2" (945mm) of precipitation is accumulated.

When does it snow in Troutdale?

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

How much does it snow in Troutdale?

Throughout the year, there are 6.3 snowfall days, and 4.37" (111mm) of snow is accumulated.

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

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

What is the most humid month in Troutdale?

February is the most humid month in Troutdale, with an average relative humidity of 84%.

When does it snow the most in Troutdale?

The month with the most snowfall is February, when snow falls for 2.2 days and typically aggregates up to 1.54" (39mm) of snow.

What is the month with the least sunshine in Troutdale?

February has the least sunshine of the year in Troutdale, with an average of 4.1h of sunshine.

When is Daylight Saving Time (DST) in Troutdale?

On Sunday, March 12. 2023, at 2:00 am, Daylight Saving Time starts in Troutdale, 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 Troutdale?

April through October are months without snowfall in Troutdale, Oregon.

When are the longest days in Troutdale?

With an average of 15h and 38min of daylight, June has the longest days of the year.

What is the driest month in Troutdale?

The month with the least rainfall is July, when the rain falls for 4.9 days and typically collects 0.31" (8mm) of precipitation.

What is the month with the highest UV index in Troutdale?

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

What is the warmest month in Troutdale?

August is the warmest month, with an average high-temperature of 79.7°F (26.5°C) and an average low-temperature of 52.7°F (11.5°C).

What is the least humid month in Troutdale?

The least humid month is August, with an average relative humidity of 65%.

What month has the most sunshine in Troutdale?

The month with the most sunshine is August, with an average of 11h of sunshine.

What is the coldest month in Troutdale?

December is the coldest month in Troutdale, Oregon, with an average high-temperature of 43.3°F (6.3°C) and an average low-temperature of 33.3°F (0.7°C).

What is the wettest month in Troutdale?

December is the month with the most rainfall. Rain falls for 19 days and accumulates 5.63" (143mm) of precipitation.

What is the month with the shortest days in Troutdale?

December has the shortest days of the year in Troutdale, with an average of 8h and 46min of daylight.

Average temperature
Troutdale, OR

Average temperature - Troutdale, OR

The warmest month (with the highest average high temperature) is August (79.7°F).
The month with the lowest average high temperature is December (43.3°F).

The month with the highest average low temperature is August (52.7°F).
The coldest month (with the lowest average low temperature) is December (33.3°F).

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Average pressure
Troutdale, OR

Average pressure - Troutdale, OR

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).

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Average wind speed
Troutdale, OR

Average wind speed - Troutdale, OR

The windiest month (with the highest average wind speed) is January (6.8mph).
The calmest month (with the lowest average wind speed) is August (3.5mph).

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Average rainfall
Troutdale, OR

Average rainfall - Troutdale, OR

The wettest month (with the highest rainfall) is December (5.63").
The driest month (with the least rainfall) is July (0.31").

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Average rainfall days
Troutdale, OR

Average rainfall days - Troutdale, OR

The month with the highest number of rainy days is March (19.6 days).
The month with the least rainy days is August (4.1 days).

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Average snowfall
Troutdale, OR

Average snowfall - Troutdale, OR

The month with the highest snowfall is February (1.54").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days
Troutdale, OR

Average snowfall days - Troutdale, OR

The month with the highest number of snowfall days is February (2.2 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
Troutdale, OR

Average daylight / Average sunshine - Troutdale, OR

The month with the longest days is June (Average daylight: 15h and 38min).
The month with the shortest days is December (Average daylight: 8h and 46min).

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
Troutdale, OR

Average sunshine days - Troutdale, OR

The month with the most sunshine days is August (25.3 days).
The month with the least sunshine days is February (8.6 days).

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Average UV index
Troutdale, OR

Average UV index - Troutdale, 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
Troutdale, OR

Average visibility - Troutdale, 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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