King County (Seattle)
January
Weather in King County, Washington for January 2027
Your guide to King County weather in January - trends and predictions
Snowfall in King County during January is quite rare, with fewer than 2 snowy days on average.
In general, the average temperature in King County at the beginning of January is 6.9 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 7.8 °C by the end of January.
The climate of King County in January is notably wet, with an average of 14 rainy days, and a total of 170.9 mm of precipitation.
Is January a good time to visit King County? check out the best time to travel to King County page.
✨ Is January a good time to visit King County? – Ask the AI Weatherman
Snow Forecast ❄️
Temperatures
Rain 🌧️
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16
Dry days
14
Rainy days
1
Snow days
7°/2°
Temperatures
11 km/h
Avg max wind
84 %
Avg humidity
King County Weather January
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Temperatures trend during January in King County
See the weather trend as well as the moving average line
January weather in King County day by day
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| Jan. 1 |  Light rain | 6° /0° | 9.4 mm | 0 cm | |
| Jan. 2 |  Moderate rain | 7° /2° | 13.2 mm | 0.3 cm | |
| Jan. 3 | Moderate rain | 7° /3° | 11.4 mm | 1.3 cm | |
| Jan. 4 | Light rain | 7° /4° | 7.9 mm | 0.1 cm | |
| Jan. 5 | Light rain | 7° /4° | 8.2 mm | 0.5 cm | |
| Jan. 6 | Moderate rain | 8° /3° | 12.7 mm | 1.3 cm | |
| Jan. 7 | Light rain | 7° /2° | 7.9 mm | 0 cm | |
| Jan. 8 | Light rain | 6° /2° | 4.3 mm | 0 cm | |
| Jan. 9 | Light rain | 8° /2° | 3.1 mm | 0 cm | |
| Jan. 10 | Light rain | 7° /2° | 5 mm | 0 cm | |
| Jan. 11 | Moderate rain | 8° /4° | 12.5 mm | 0 cm | |
| Jan. 12 | Moderate rain | 7° /4° | 15 mm | 0.1 cm | |
| Jan. 13 | Light rain | 6° /3° | 3.5 mm | 0 cm | |
| Jan. 14 |  Cloudy | 7° /2° | 0.4 mm | 0 cm | |
| Jan. 15 | Light rain | 7° /2° | 2.7 mm | 0 cm | |
| Jan. 16 |  Overcast | 7° /2° | 0.6 mm | 0 cm | |
| Jan. 17 | Light rain | 7° /3° | 4 mm | 0 cm | |
| Jan. 18 | Light rain | 6° /3° | 6.5 mm | 0 cm | |
| Jan. 19 | Light rain | 7° /2° | 3.2 mm | 0 cm | |
| Jan. 20 | Light rain | 6° /2° | 3.5 mm | 0 cm | |
| Jan. 21 | Light rain | 6° /2° | 3.6 mm | 0 cm | |
| Jan. 22 | Light rain | 7° /1° | 2.8 mm | 0 cm | |
| Jan. 23 |  Patchy rain possible | 7° /1° | 1.3 mm | 0 cm | |
| Jan. 24 | Light rain | 6° /2° | 2.8 mm | 0 cm | |
| Jan. 25 | Patchy rain possible | 7° /1° | 1.5 mm | 0 cm | |
| Jan. 26 | Patchy rain possible | 8° /1° | 1 mm | 0 cm | |
| Jan. 27 | Light rain | 7° /2° | 2.6 mm | 0 cm | |
| Jan. 28 | Light rain | 8° /3° | 3.1 mm | 0 cm | |
| Jan. 29 | Light rain | 8° /2° | 5.5 mm | 0 cm | |
| Jan. 30 |  Moderate rain at times | 8° /4° | 6 mm | 0 cm | |
| Jan. 31 | Light rain | 9° /5° | 5.8 mm | 0 cm | |
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Important Notice
Our weather forecast for King County in January is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the King County forecast closer to your planned date for the most up-to-date weather information.
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King County in January - FAQ
What are the expected maximum and minimum temperatures in King County during January?
Prepare for cooler days with highs just around 7° and colder nights, dipping below 2°.
How much rainfall should be expected in King County during January?
Significant rainfall exceeding 170.9 mm is expected in King County during January, occurring over more than 14 days. Preparing for wet conditions is recommended in your planning.
Will it snow in King County in January 2027?
King County typically sees 3.6 cm of snowfall during January.
What are the typical wind conditions in King County during January?
The average wind speed in King County during January is 11 km/h, suggesting breezy to windy conditions, depending on your activities.
King County snow forecast January 2027
Track daily snowfall levels and discover King County’s snowy potential this January ❄️
On average, King County sees 1 snowy days during January, with approximately 3.6 cm of total snowfall.
January rainfall patterns in King County
Explore the daily rainfall trends and prepare for King Countys January weather 💧
Typically, King County has 14 rainy days in January with a total of 170.9 mm of rainfall.
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