Climate and monthly weather forecast
Rosalia, WA

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Weather in January

January, the same as December, is a wintry winter month in Rosalia, Washington, with an average temperature varying between 24.6°F (-4.1°C) and 34.5°F (1.4°C). The arrival of January coincides with an average high-temperature of a still cold 34.5°F (1.4°C), indicating a minimal shift from December's 33.1°F (0.6°C). Weather in January »

Weather in February

February, the last month of the winter in Rosalia, is also a wintry month, with temperature in the range of an average low of 26.8°F (-2.9°C) and an average high of 37.9°F (3.3°C). The onset of February brings an average high-temperature of a still icy 37.9°F (3.3°C), nearly matching the January temperature. Weather in February »

Weather in March

March, the first month of the spring in Rosalia, is a chilly month, with an average temperature varying between 46.9°F (8.3°C) and 32.7°F (0.4°C). Rosalia's March weather brings a rise in high-temperatures, moving from a cold 37.9°F (3.3°C) in February to a frosty 46.9°F (8.3°C). Weather in March »

Weather in April

April in Rosalia, Washington, is a mild spring month, with an average temperature varying between 55.9°F (13.3°C) and 37.4°F (3°C). Rosalia in April shows a temperature shift, moving from an average high of a chilly 46.9°F (8.3°C) in March to a moderate 55.9°F (13.3°C). Weather in April »

Weather in May

May, the last month of the spring in Rosalia, is an enjoyable month, with temperature in the range of an average low of 44.2°F (6.8°C) and an average high of 65.7°F (18.7°C). May's arrival brings a temperature shift, moving from a moderate 55.9°F (13.3°C) in April to an enjoyable 65.7°F (18.7°C). Weather in May »

Weather in June

June, the first month of the summer in Rosalia, is an agreeable month, with an average temperature fluctuating between 72.1°F (22.3°C) and 49.8°F (9.9°C). Rosalia's June weather indicates a minor ascent in high-temperatures, adjusting from an enjoyable 65.7°F (18.7°C) in May to an agreeable 72.1°F (22.3°C). Weather in June »

Weather in July

July is a warm summer month in Rosalia, Washington, with an average temperature varying between 84.4°F (29.1°C) and 58.6°F (14.8°C). July registers as the month with the highest average temperatures, reaching 84.4°F (29.1°C) at its peak and 58.6°F (14.8°C) at the lowest. July's heat index is calculated to be 84.2°F (29°C). Weather in July »

Weather in August

August, the last month of the summer in Rosalia, is also a moderately hot month, with an average temperature fluctuating between 61.3°F (16.3°C) and 83.8°F (28.8°C). Rosalia indicates an average high-temperature of a still warm 83.8°F (28.8°C) in August, showing minor variation from July's 84.4°F (29.1°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a pleasant month in Rosalia, Washington, with temperature in the range of an average low of 53.2°F (11.8°C) and an average high of 72.9°F (22.7°C). The beginning of September involves a decrease in the average high-temperature, transitioning from a warm 83.8°F (28.8°C) in August to a pleasant 72.9°F (22.7°C). Weather in September »

Weather in October

October, like September, is a moderate autumn month in Rosalia, Washington, with an average temperature fluctuating between 56.8°F (13.8°C) and 41.9°F (5.5°C). With the onset of October, Rosalia's average high-temperature witnesses a clear drop, receding from September's pleasant 72.9°F (22.7°C) to a mild 56.8°F (13.8°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a frosty month in Rosalia, Washington, with temperature in the range of an average low of 31.8°F (-0.1°C) and an average high of 43°F (6.1°C). The shift to November brings a decrease in the average high-temperature, falling from a refreshing 56.8°F (13.8°C) in October to a chilly 43°F (6.1°C). Weather in November »

Weather in December

The first month of the winter, December, is also a wintry month in Rosalia, Washington, with temperature in the range of an average low of 23.9°F (-4.5°C) and an average high of 33.1°F (0.6°C). With its high average temperature of 33.1°F (0.6°C) and a low of 23.9°F (-4.5°C), December is regarded as the coldest month. Weather in December »
Updated: Feb 14, 2024 | Published by: Weather U.S. | Resources

Frequently asked questions

What is the most humid month in Rosalia?

With an average relative humidity of 87%, January is the most humid month.

What is the wettest month in Rosalia?

The months with the most rainfall are January and May, with an average 0.91" (23mm) of precipitation.

How many days does it rain in Rosalia?

Throughout the year, there are 84.3 rainfall days, and 7.24" (184mm) of precipitation is accumulated.

When does it snow in Rosalia?

Months with snowfall are January through May, September, November and December.

How much does it snow in Rosalia?

Throughout the year, there are 32.5 snowfall days, and 14.09" (358mm) of snow is accumulated.

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

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

What is the snowiest month in Rosalia?

February is the month with the most snowfall in Rosalia, Washington. Snow falls for 7.6 days and accumulates 3.82" (97mm) of snow.

When is Daylight Saving Time (DST) in Rosalia?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, 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 Rosalia?

In Rosalia, snow does not fall in June through August and October.

When are the longest days in Rosalia?

The month with the longest days is June, with an average of 15h and 54min of daylight.

What are the warmest months in Rosalia?

The highest temperatures in Rosalia, Washington, are recorded in July, with averages reaching a high of 84.4°F (29.1°C) and a low of 58.6°F (14.8°C).

What is the driest month in Rosalia?

July is the month with the least rainfall in Rosalia. Rain falls for 3.5 days and accumulates 0.16" (4mm) of precipitation.

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

The month with the highest UV index in Rosalia is July, with an average maximum UV index of 7.

What is the least humid month in Rosalia?

With an average relative humidity of 36%, August is the least humid month in Rosalia.

What month has the most sunshine in Rosalia?

The month with the most sunshine in Rosalia, Washington, is August, with an average of 12.1h of sunshine.

What are the coldest months in Rosalia?

December tends to be the coldest month, with temperatures averaging a daily high of 33.1°F (0.6°C) and a low of 23.9°F (-4.5°C).

What is the month with the shortest days in Rosalia?

December has the shortest days of the year in Rosalia, Washington, with an average of 8h and 36min of daylight.

What is the month with the least sunshine in Rosalia?

With an average of 4.3h of sunshine, December has the least sunshine of the year in Rosalia.

Average temperature
Rosalia, WA

Average temperature - Rosalia, WA

The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is December (33.1°F).

The month with the highest average low temperature is August (61.3°F).
The coldest month (with the lowest average low temperature) is December (23.9°F).

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Average pressure
Rosalia, WA

Average pressure - Rosalia, WA

The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is August (29.9"Hg).

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Average wind speed
Rosalia, WA

Average wind speed - Rosalia, WA

The windiest month (with the highest average wind speed) is March (8.8mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).

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Average rainfall
Rosalia, WA

Average rainfall - Rosalia, WA

The wettest months (with the highest rainfall) are January and May (0.91").
The driest month (with the least rainfall) is July (0.16").

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Average rainfall days
Rosalia, WA

Average rainfall days - Rosalia, WA

The month with the highest number of rainy days is March (10.1 days).
The month with the least rainy days is July (3.5 days).

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Average snowfall
Rosalia, WA

Average snowfall - Rosalia, WA

The month with the highest snowfall is February (3.82").
The months with the least snowfall are June, July, August and October (0").

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Average snowfall days
Rosalia, WA

Average snowfall days - Rosalia, WA

The month with the highest number of snowfall days is December (9.3 days).
The months with the least snowfall days are June, July, August and October (0 days).

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Average daylight / Average sunshine
Rosalia, WA

Average daylight / Average sunshine - Rosalia, WA

The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 36min).

The month with the most sunshine is August (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 4h and 18min).

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Average sunshine days
Rosalia, WA

Average sunshine days - Rosalia, WA

The month with the most sunshine days is July (26.6 days).
The month with the least sunshine days is February (15.9 days).

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Average UV index
Rosalia, WA

Average UV index - Rosalia, WA

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average visibility
Rosalia, WA

Average visibility - Rosalia, WA

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

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Rosalia, Washington, USA

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