Climate and monthly weather forecast
Sultan, WA

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Weather in January

January, like December, in Sultan, Washington, is another cold winter month, with temperature in the range of an average low of 29.7°F (-1.3°C) and an average high of 39.9°F (4.4°C). The arrival of January brings an average high-temperature of a still icy 39.9°F (4.4°C), nearly identical to December's 38.3°F (3.5°C). Weather in January »

Weather in February

February, the last month of the winter in Sultan, is another cold month, with an average temperature varying between 29.3°F (-1.5°C) and 40.6°F (4.8°C). Transitioning from January to February, Sultan observes an average high-temperature of a still cold 40.6°F (4.8°C), differing subtly from the previous month. Weather in February »

Weather in March

The first month of the spring, March, is a chilly month in Sultan, Washington, with temperature in the range of an average high of 45.1°F (7.3°C) and an average low of 31.5°F (-0.3°C). Sultan marks the start of March with an average high-temperature of a chilly 45.1°F (7.3°C), hinting at a slight fluctuation from February's 40.6°F (4.8°C). Weather in March »

Weather in April

April in Sultan, Washington, is a cool spring month, with temperature in the range of an average low of 34.7°F (1.5°C) and an average high of 51.1°F (10.6°C). Sultan's transition into April brings a slight rise in the average high-temperature, moving from a frosty 45.1°F (7.3°C) in March to a cool 51.1°F (10.6°C). Weather in April »

Weather in May

May, the last month of the spring in Sultan, is a mild month, with an average temperature varying between 60.4°F (15.8°C) and 40.1°F (4.5°C). Sultan's May weather brings a rise in high-temperatures, moving from a cool 51.1°F (10.6°C) in April to a moderate 60.4°F (15.8°C). Weather in May »

Weather in June

The first month of the summer, June, is a refreshing month in Sultan, Washington, with an average temperature varying between 43°F (6.1°C) and 64.9°F (18.3°C). The onset of June notes an average high-temperature of an enjoyable 64.9°F (18.3°C), subtly shifted from May's 60.4°F (15.8°C). Weather in June »

Weather in July

July is a pleasant summer month in Sultan, Washington, with an average temperature varying between 46.6°F (8.1°C) and 72.9°F (22.7°C). Sultan observes a slight ascent in average high-temperatures during July, adjusting from a refreshing 64.9°F (18.3°C) in June to an agreeable 72.9°F (22.7°C). Weather in July »

Weather in August

The last month of the summer, August, is a warm month in Sultan, Washington, with an average temperature varying between 48°F (8.9°C) and 73.4°F (23°C). In Sultan, August is the warmest month, with temperatures averaging a high of 73.4°F (23°C) and a low of 48°F (8.9°C). Weather in August »

Weather in September

The first month of the autumn, September, is also an enjoyable month in Sultan, Washington, with an average temperature ranging between min 45°F (7.2°C) and max 66.4°F (19.1°C). The beginning of September brings a slight decrease in the average high-temperature, transitioning from a moderately hot 73.4°F (23°C) in August to a refreshing 66.4°F (19.1°C). Weather in September »

Weather in October

October, the same as September, is another fresh autumn month in Sultan, Washington, with an average temperature ranging between min 40.1°F (4.5°C) and max 54.5°F (12.5°C). October comes with a decrease in the average high-temperature, falling from an enjoyable 66.4°F (19.1°C) in September to a cool 54.5°F (12.5°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a frosty month in Sultan, Washington, with an average temperature ranging between min 34.3°F (1.3°C) and max 44.6°F (7°C). As October shifts into November, a slight alteration in temperatures is observed, with average highs reducing from a fresh 54.5°F (12.5°C) to a chilly 44.6°F (7°C). Weather in November »

Weather in December

The first month of the winter, December, is still a cold month in Sultan, Washington, with temperature in the range of an average high of 38.3°F (3.5°C) and an average low of 28.6°F (-1.9°C). The coldest month is December, with an average high-temperature of 38.3°F (3.5°C) and an average low-temperature of 28.6°F (-1.9°C). Weather in December »
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Frequently asked questions

What is the most humid month in Sultan?

The months with the highest humidity in Sultan are January through March, with an average relative humidity of 88%.

What is the rainiest month in Sultan?

The month with the most rainfall is January, when the rain falls for 19.5 days and typically aggregates up to 7.8" (198mm) of precipitation.

How much does it rain in Sultan?

In Sultan, Washington, during the entire year, the rain falls for 200.6 days and collects up to 51.65" (1312mm) of precipitation.

When does it snow in Sultan?

Months with snowfall in Sultan, Washington, are January through April, November and December.

How much does it snow in Sultan?

In Sultan, during the entire year, snow falls for 15.9 days and aggregates up to 14.41" (366mm) of snow.

What are the months with the least sunshine in Sultan?

The months with the least sunshine are January and December, with an average of 3.7h of sunshine.

When is the lowest UV index in Sultan?

The months with the lowest UV index in Sultan are January through April, October through December, with an average maximum UV index of 2.

When does it snow the most in Sultan?

February is the month with the most snowfall. Snow falls for 5.2 days and accumulates 5.43" (138mm) of snow.

When is Daylight Saving Time (DST) in Sultan?

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 Sultan?

May through October are months without snowfall in Sultan, Washington.

When are the longest days in Sultan?

June has the longest days of the year, with an average of 16h and 0min of daylight.

What is the least humid month in Sultan?

July is the least humid month in Sultan, with an average relative humidity of 72%.

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

With an average maximum UV index of 5, July is the month with the highest UV index in Sultan, Washington.

What time of the year is the hottest in Sultan?

The month of August sees the average highest temperatures, reaching 73.4°F (23°C) at the peak and 48°F (8.9°C) at the low.

What is the driest month in Sultan?

The month with the least rainfall in Sultan, Washington, is August, when the rain falls for 7.9 days and typically collects 0.79" (20mm) of precipitation.

What month has the most sunshine in Sultan?

August has the most sunshine of the year in Sultan, Washington, with an average of 10.4h of sunshine.

What is the coldest month in Sultan?

Sultan's coldest month, December, generally records average temperatures ranging from a high of 38.3°F (3.5°C) to a low of 28.6°F (-1.9°C).

What is the month with the shortest days in Sultan?

With an average of 8h and 30min of daylight, December has the shortest days of the year in Sultan.

Average temperature
Sultan, WA

Average temperature - Sultan, WA

The warmest month (with the highest average high temperature) is August (73.4°F).
The month with the lowest average high temperature is December (38.3°F).

The month with the highest average low temperature is August (48°F).
The coldest month (with the lowest average low temperature) is December (28.6°F).

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Average pressure
Sultan, WA

Average pressure - Sultan, WA

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is August (29.99"Hg).

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Average wind speed
Sultan, WA

Average wind speed - Sultan, WA

The windiest month (with the highest average wind speed) is January (4.8mph).
The calmest month (with the lowest average wind speed) is August (3.2mph).

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Average humidity
Sultan, WA

Average humidity - Sultan, WA

The months with the highest relative humidity are January, February and March (88%).
The month with the lowest relative humidity is July (72%).

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Average rainfall
Sultan, WA

Average rainfall - Sultan, WA

The wettest month (with the highest rainfall) is January (7.8").
The driest month (with the least rainfall) is August (0.79").

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Average rainfall days
Sultan, WA

Average rainfall days - Sultan, WA

The month with the highest number of rainy days is March (22.3 days).
The month with the least rainy days is August (7.9 days).

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Average snowfall
Sultan, WA

Average snowfall - Sultan, WA

The month with the highest snowfall is February (5.43").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days
Sultan, WA

Average snowfall days - Sultan, WA

The month with the highest number of snowfall days is February (5.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight / Average sunshine
Sultan, WA

Average daylight / Average sunshine - Sultan, WA

The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 30min).

The month with the most sunshine is August (Average sunshine: 10h and 24min).
The months with the least sunshine are January and December (Average sunshine: 3h and 42min).

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Average sunshine days
Sultan, WA

Average sunshine days - Sultan, WA

The month with the most sunshine days is August (19.9 days).
The month with the least sunshine days is March (7 days).

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Average UV index
Sultan, WA

Average UV index - Sultan, WA

The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).

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Average visibility
Sultan, WA

Average visibility - Sultan, WA

The months with the highest visibility are May, June, July, August, September and October (5mi).
The months with the lowest visibility are January, February, March, April, November and December (4mi).

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Sultan, Washington, USA

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