Climate and monthly weather forecast
Sunnyside, OR

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Weather in January

January, like December, is a frosty winter month in Sunnyside, Oregon, with an average temperature fluctuating between 35.2°F (1.8°C) and 46.2°F (7.9°C). The shift into January records an average high-temperature of a still chilly 46.2°F (7.9°C), subtly varied from December's 44.4°F (6.9°C). Weather in January »

Weather in February

February, the last month of the winter in Sunnyside, is also a frosty month, with temperature in the range of an average high of 47.1°F (8.4°C) and an average low of 35.1°F (1.7°C). Sunnyside greets February with an average high-temperature of a still frosty 47.1°F (8.4°C), marking a slight deviation from the preceding month. Weather in February »

Weather in March

The first month of the spring, March, is a cool month in Sunnyside, Oregon, with an average temperature fluctuating between 37.8°F (3.2°C) and 52.2°F (11.2°C). The arrival of March sees a recorded average high-temperature of a fresh 52.2°F (11.2°C), showing little divergence from the previous month's conditions. Weather in March »

Weather in April

April is a refreshing spring month in Sunnyside, Oregon, with an average temperature varying between 39.4°F (4.1°C) and 58.5°F (14.7°C). The arrival of April signals a slight increase in the average high-temperature, moving from a fresh 52.2°F (11.2°C) in March to a mild 58.5°F (14.7°C). Weather in April »

Weather in May

May, the last month of the spring in Sunnyside, is an enjoyable month, with an average temperature varying between 66.6°F (19.2°C) and 43.5°F (6.4°C). Sunnyside's May weather indicates a minor increase in high-temperatures, edging from April's refreshing 58.5°F (14.7°C) to an enjoyable 66.6°F (19.2°C). Weather in May »

Weather in June

June, the first month of the summer in Sunnyside, is an agreeable month, with an average temperature fluctuating between 47.5°F (8.6°C) and 71.8°F (22.1°C). In June, Sunnyside notes an average high-temperature of an agreeable 71.8°F (22.1°C), hardly different from the preceding month. Weather in June »

Weather in July

July is a moderately hot summer month in Sunnyside, Oregon, with an average temperature fluctuating between 51.6°F (10.9°C) and 80.2°F (26.8°C). The shift into July is characterized by a subtle rise in the average high-temperature, transitioning from June's pleasant 71.8°F (22.1°C) to a moderately hot 80.2°F (26.8°C). Weather in July »

Weather in August

August, the last month of the summer in Sunnyside, is also a moderately hot month, with temperature in the range of an average low of 54°F (12.2°C) and an average high of 81.1°F (27.3°C). In Sunnyside, the peak temperatures are generally noted in August, averaging a high of 81.1°F (27.3°C) and a low of 54°F (12.2°C). For most parts of August, the heat index is appraised at 84.2°F (29°C). Weather in August »

Weather in September

September, the first month of the autumn in Sunnyside, is also a moderately hot month, with an average temperature ranging between min 50.5°F (10.3°C) and max 73.6°F (23.1°C). The onset of September brings a small shift in high-temperatures, falling from a warm 81.1°F (27.3°C) in August to a still moderately hot 73.6°F (23.1°C). Weather in September »

Weather in October

October, like September, in Sunnyside, Oregon, is another comfortable autumn month, with temperature in the range of an average high of 61.3°F (16.3°C) and an average low of 45.1°F (7.3°C). With October's onset, the weather shows a temperature decrease, transitioning from a warm 73.6°F (23.1°C) in September to an enjoyable 61.3°F (16.3°C). Weather in October »

Weather in November

November, the last month of the autumn in Sunnyside, is another cool month, with temperature in the range of an average low of 39.7°F (4.3°C) and an average high of 50.9°F (10.5°C). As October shifts into November, a slight alteration in temperatures is observed, with average highs reducing from a comfortable 61.3°F (16.3°C) to a cool 50.9°F (10.5°C). Weather in November »

Weather in December

December, the first month of the winter in Sunnyside, is still a chilly month, with temperature in the range of an average high of 44.4°F (6.9°C) and an average low of 34.3°F (1.3°C). In Sunnyside, December is the coldest month, with temperatures averaging a high of 44.4°F (6.9°C) and a low of 34.3°F (1.3°C). Weather in December »
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Frequently asked questions

How many days does it rain in Sunnyside?

In Sunnyside, Oregon, during the entire year, the rain falls for 169.9 days and collects up to 32.76" (832mm) of precipitation.

When does it snow in Sunnyside?

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

How many days does it snow in Sunnyside?

Throughout the year, there are 6.1 snowfall days, and 4.17" (106mm) of snow is accumulated.

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

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

What is the most humid month in Sunnyside?

With an average relative humidity of 84%, February is the most humid month.

What is the snowiest month in Sunnyside?

The month with the most snowfall is February, when snow falls for 2.3 days and typically aggregates up to 1.5" (38mm) of snow.

What is the month with the least sunshine in Sunnyside?

The month with the least sunshine in Sunnyside is February, with an average of 4.3h of sunshine.

When is Daylight Saving Time (DST) in Sunnyside?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Sunnyside, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from PDT to PST.

When it does not snow in Sunnyside?

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

When are the longest days in Sunnyside?

June has the longest days of the year in Sunnyside, Oregon, with an average of 15h and 36min of daylight.

What is the driest month in Sunnyside?

The month with the least rainfall is July, when the rain falls for 4.3 days and typically collects 0.24" (6mm) of precipitation.

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

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

What time of the year is the hottest in Sunnyside?

August is the month when Sunnyside sees the average highest temperatures, with a high of 81.1°F (27.3°C) and a low of 54°F (12.2°C).

What is the least humid month in Sunnyside?

The least humid month in Sunnyside is August, with an average relative humidity of 64%.

What month has the most sunshine in Sunnyside?

With an average of 11.1h of sunshine, August has the most sunshine of the year in Sunnyside.

What is the coldest time of year in Sunnyside?

The coldest period in Sunnyside, Oregon, tends to be December, when average temperatures fluctuate between a high of 44.4°F (6.9°C) and a low of 34.3°F (1.3°C).

What is the rainiest month in Sunnyside?

December is the month with the most rainfall in Sunnyside. Rain falls for 19.2 days and accumulates 5.16" (131mm) of precipitation.

What is the month with the shortest days in Sunnyside?

December has the shortest days of the year, with an average of 8h and 48min of daylight.

Average temperature
Sunnyside, OR

Average temperature - Sunnyside, OR

The warmest month (with the highest average high temperature) is August (81.1°F).
The month with the lowest average high temperature is December (44.4°F).

The month with the highest average low temperature is August (54°F).
The coldest month (with the lowest average low temperature) is December (34.3°F).

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Average pressure
Sunnyside, OR

Average pressure - Sunnyside, 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
Sunnyside, OR

Average wind speed - Sunnyside, OR

The windiest month (with the highest average wind speed) is January (6mph).
The calmest month (with the lowest average wind speed) is August (3.5mph).

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Average rainfall
Sunnyside, OR

Average rainfall - Sunnyside, OR

The wettest month (with the highest rainfall) is December (5.16").
The driest month (with the least rainfall) is July (0.24").

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Average rainfall days
Sunnyside, OR

Average rainfall days - Sunnyside, OR

The month with the highest number of rainy days is March (20.3 days).
The month with the least rainy days is August (4 days).

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Average snowfall
Sunnyside, OR

Average snowfall - Sunnyside, OR

The month with the highest snowfall is February (1.5").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days
Sunnyside, OR

Average snowfall days - Sunnyside, 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
Sunnyside, OR

Average daylight / Average sunshine - Sunnyside, OR

The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).

The month with the most sunshine is August (Average sunshine: 11h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).

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Average sunshine days
Sunnyside, OR

Average sunshine days - Sunnyside, OR

The month with the most sunshine days is July (26.2 days).
The month with the least sunshine days is February (8.1 days).

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Average UV index
Sunnyside, OR

Average UV index - Sunnyside, 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
Sunnyside, OR

Average visibility - Sunnyside, OR

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

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Sunnyside, Oregon, USA

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