Climate and monthly weather forecast
Royal City, WA

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Weather in January

January, the same as December, is another cold winter month in Royal City, Washington, with an average temperature varying between 25.9°F (-3.4°C) and 35.4°F (1.9°C). Royal City, Washington, experiences a minor change to a still icy 35.4°F (1.9°C) in average high-temperature during January, closely reflecting December. Weather in January »

Weather in February

The last month of the winter, February, is also a wintry month in Royal City, Washington, with temperature in the range of an average high of 41.4°F (5.2°C) and an average low of 29.1°F (-1.6°C). With the onset of February, Royal City's average high-temperature experiences a slight rise, moving from January's icy 35.4°F (1.9°C) to a still wintry 41.4°F (5.2°C). Weather in February »

Weather in March

The first month of the spring, March, is a fresh month in Royal City, Washington, with an average temperature ranging between min 35.8°F (2.1°C) and max 51.4°F (10.8°C). March's arrival coincides with a temperature rise, moving from February's wintry 41.4°F (5.2°C) to a fresh 51.4°F (10.8°C). Weather in March »

Weather in April

April is a comfortable spring month in Royal City, Washington, with an average temperature varying between 61.3°F (16.3°C) and 41.5°F (5.3°C). Royal City's weather in April shows a rise in the average high-temperature, moving up from March's fresh 51.4°F (10.8°C) to a comfortable 61.3°F (16.3°C). Weather in April »

Weather in May

May, the last month of the spring in Royal City, is a pleasant month, with an average temperature fluctuating between 49.1°F (9.5°C) and 71.2°F (21.8°C). A rise in the average high-temperature is observed during May, moving from a comfortable 61.3°F (16.3°C) in April to a pleasant 71.2°F (21.8°C). Weather in May »

Weather in June

June, the first month of the summer in Royal City, is a moderately hot month, with an average temperature fluctuating between 78.6°F (25.9°C) and 54.1°F (12.3°C). In Royal City, the onset of June comes with a modest high-temperature shift, transitioning from May's pleasant 71.2°F (21.8°C) to a warm 78.6°F (25.9°C). Weather in June »

Weather in July

July in Royal City, Washington, is a tropical summer month, with an average temperature ranging between min 60.4°F (15.8°C) and max 88.3°F (31.3°C). July and August mark Royal City's peak of temperatures, averaging a high-temperature of 88.3°F (31.3°C). Weather in July »

Weather in August

The last month of the summer, August, is another hot month in Royal City, Washington, with an average temperature varying between 88.3°F (31.3°C) and 61.5°F (16.4°C). July and August are identified as the warmest months, with an average high-temperature of 88.3°F (31.3°C). Weather in August »

Weather in September

The first month of the autumn, September, is also a moderately hot month in Royal City, Washington, with an average temperature ranging between max 76.1°F (24.5°C) and min 54.7°F (12.6°C). As Royal City enters September, the average high-temperature decreases from the a hot 88.3°F (31.3°C) of August to a warm 76.1°F (24.5°C). Weather in September »

Weather in October

October, the same as September, in Royal City, Washington, is a moderate autumn month, with an average temperature fluctuating between 60.1°F (15.6°C) and 43.7°F (6.5°C). The shift into October is marked by a noticeable reduction in the average high-temperature, decreasing from September's moderately hot 76.1°F (24.5°C) to a moderate 60.1°F (15.6°C). Weather in October »

Weather in November

The last month of the autumn, November, is another chilly month in Royal City, Washington, with an average temperature ranging between min 32.9°F (0.5°C) and max 45.5°F (7.5°C). With the transition into November, Royal City experiences a significant decrease in average high-temperatures, moving down from a refreshing 60.1°F (15.6°C) in October to a chilly 45.5°F (7.5°C). Weather in November »

Weather in December

The first month of the winter, December, is still a cold month in Royal City, Washington, with temperature in the range of an average low of 24.3°F (-4.3°C) and an average high of 34.5°F (1.4°C). December is the month when Royal City sees the lowest average temperatures, with a high of 34.5°F (1.4°C) and a low of 24.3°F (-4.3°C). Weather in December »
Updated: Feb 14, 2024 | Published by: Weather U.S. | About Us / Weather Forecasting / Data Sources

Frequently asked questions

What is the most humid month in Royal City?

With an average relative humidity of 83%, January is the most humid month.

What is the rainiest month in Royal City?

The wettest months are January and December, with an average 0.87" (22mm) of rainfall.

How much does it rain in Royal City?

In Royal City, Washington, during the entire year, the rain falls for 86.4 days and collects up to 6.38" (162mm) of precipitation.

When does it snow in Royal City?

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

How many days does it snow in Royal City?

In Royal City, Washington, during the entire year, snow falls for 22.3 days and aggregates up to 10" (254mm) of snow.

What is the month with the least sunshine in Royal City?

The month with the least sunshine in Royal City is January, with an average of 4.9h of sunshine.

What is the month with the lowest UV index in Royal City?

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

When is Daylight Saving Time (DST) in Royal City?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Royal City, Washington, 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 Royal City?

In Royal City, snow does not fall in May through August and October.

When are the longest days in Royal City?

With an average of 15h and 48min of daylight, June has the longest days of the year.

What is the hottest time of year in Royal City?

Royal City's warmest period falls in July and August, when the average high-temperatures ascend to 88.3°F (31.3°C).

What is the least humid month in Royal City?

The least humid month in Royal City is July, with an average relative humidity of 37%.

What is the month with the most sunshine in Royal City?

July and August, with an average of 12h of sunshine, are months with the most sunshine.

When is the highest UV index in Royal City?

With an average maximum UV index of 7, July is the month with the highest UV index.

What is the driest month in Royal City?

The month with the least rainfall is August, when the rain falls for 3.5 days and typically collects 0.2" (5mm) of precipitation.

What month is the coldest in Royal City?

The coldest time of the year is December, with temperatures averaging a high of 34.5°F (1.4°C) and a low of 24.3°F (-4.3°C).

When does it snow the most in Royal City?

The month with the most snowfall is December, when snow falls for 6.5 days and typically aggregates up to 3.43" (87mm) of snow.

What is the month with the shortest days in Royal City?

The month with the shortest days is December, with an average of 8h and 36min of daylight.

Average temperature
Royal City, WA

Average temperature - Royal City, WA

The warmest months (with the highest average high temperature) are July and August (88.3°F).
The month with the lowest average high temperature is December (34.5°F).

The month with the highest average low temperature is August (61.5°F).
The coldest month (with the lowest average low temperature) is December (24.3°F).

Average pressure
Royal City, WA

Average pressure - Royal City, WA

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).

Average wind speed
Royal City, WA

Average wind speed - Royal City, WA

The windiest month (with the highest average wind speed) is April (7.6mph).
The calmest month (with the lowest average wind speed) is December (4.7mph).

Average humidity
Royal City, WA

Average humidity - Royal City, WA

The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is July (37%).

Average rainfall
Royal City, WA

Average rainfall - Royal City, WA

The wettest months (with the highest rainfall) are January and December (0.87").
The driest month (with the least rainfall) is August (0.2").

Average rainfall days
Royal City, WA

Average rainfall days - Royal City, WA

The month with the highest number of rainy days is March (10.6 days).
The month with the least rainy days is August (3.5 days).

Average snowfall
Royal City, WA

Average snowfall - Royal City, WA

The month with the highest snowfall is December (3.43").
The months with the least snowfall are May, June, July, August and October (0").

Average snowfall days
Royal City, WA

Average snowfall days - Royal City, WA

The month with the highest number of snowfall days is December (6.5 days).
The months with the least snowfall days are May, June, July and August (0 days).

Average daylight / Average sunshine
Royal City, WA

Average daylight / Average sunshine - Royal City, WA

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

The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).

Average sunshine days
Royal City, WA

Average sunshine days - Royal City, WA

The months with the most sunshine days are July and August (25.8 days).
The month with the least sunshine days is February (16 days).

Average UV index
Royal City, WA

Average UV index - Royal City, 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).

Average visibility
Royal City, WA

Average visibility - Royal City, 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).

Royal City, Washington, USA

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