Arlington

Snohomish County, Washington, United States

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Current Weather

13°

Overcast

Feels Like: 11°

Min: 12°

Max: 20°

The next few hours will be overcast, with today reaching 20°C and dropping to 8°C. The coming days will be mostly clear

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Hourly Forecast

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8pm
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Today
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Daylight Hours

06:53

Sunrise

19:12

Sunset

12 hours 19 minutes of sunlight today

Moon

Waxing Crescent

12:21

Moonrise

20:23

Moonset

Daily Forecast

Today

12°
20°

Wednesday

23°

Thursday

10°
24°

Friday

10°
23°

Saturday

11°
22°

Sunday

10°
23°

Monday

11°
21°

Tuesday

10°
20°

Wednesday

16°

Thursday

18°

Air Quality Data Available

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UV Index

No protection needed
0 Low
Low Extreme

Humidity

88% Humid
Low High

Weather in Arlington today, September 15, 2026

Cloud cover dominates in Arlington on September 15, 2026, keeping sunshine limited. Expect a grey, overcast feel rather than long bright spells. The first half of the day looks overcast, as cloud amounts reach about 100% around 04:00. Brighter weather, if it comes, waits until later.

Temperatures climb from an overnight low near 12°C toward a daytime high of about 20°C. Moisture in the air spans 57%-93%, with the highest values around 23:00. Winds stay light, near 3.5 km/h by 18:00, so the day feels still more than breezy.

The afternoon keeps an overcast feel, as cloud reaches about 100% around 16:00. Outdoor plans may still want a flexible backup. Expect visibility around 16.1 km. Sunrise is at 06:53 and sunset at 19:12, giving 12 hours 19 minutes of sunlight today.

Overall, Arlington on September 15, 2026 stays grey and muted, so outdoor plans may want a flexible backup even with a high near 20°C.

Frequently asked questions about weather in Arlington

How warm does it get in Arlington?

The warmest month in Arlington is August, with average high temperatures of 24°C. The average temperature during this period is around 18°C.

How cold does it get in Arlington?

The coldest month in Arlington is February, with average low temperatures of 2°C. The average temperature during this period is around 4°C.

What is the wettest time of year in Arlington?

The wettest month in Arlington is November, with an average of 262mm of precipitation.

What is the driest time of year in Arlington?

The driest month in Arlington is July, with an average of 20mm of precipitation.

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