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Kittitas County (Snoqualmie Pass)
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United States weather

Weather in Kittitas County, Washington for December 2026

Your guide to Kittitas County weather in December - trends and predictions

    Snow Forecast ❄️

  • Expect heavy snowfall in Kittitas County during December, with an average of 19 snowy days.

    • Temperatures

  • In general, the average temperature in Kittitas County at the beginning of December is 2 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 0.4 °C by the end of December.

    • More

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Average dry days
9
Dry days
Average rainy days
3
Rainy days
Average snowy days
19
Snow days
Average temperatures
3°/-2°
Temperatures
Average wind speed
15 km/h
Avg max wind
Average humidity
91 %
Avg humidity

Kittitas County Weather December

Move between months or click on a day
November
January
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Overcast
4°
2
Heavy snow
0°
3
Freezing fog
1°
4
Heavy snow
1°
5
Light rain shower
4°
6
Heavy snow
1°
7
Freezing fog
3°
8
Moderate or heavy sleet
5°
9
Heavy snow
5°
10
Moderate or heavy sleet
6°
11
Heavy snow
7°
12
Moderate rain at times
5°
13
Mist
8°
14
Fog
6°
15
Heavy rain at times
8°
16
Heavy snow
3°
17
Heavy snow
4°
18
Heavy snow
4°
19
Moderate snow
0°
20
Moderate or heavy snow showers
0°
21
Freezing fog
1°
22
Mist
0°
23
Overcast
0°
24
Moderate or heavy rain shower
2°
25
Moderate or heavy snow showers
1°
26
Blowing snow
0°
27
Moderate snow
-4°
28
Mist
-1°
29
Mist
2°
30
Overcast
1°
31
Partly cloudy
4°

Temperatures trend during December in Kittitas County

See the weather trend as well as the moving average line

December weather in Kittitas County day by day

Click on a date for more information
November January
Date Weather Temperatures Rain Snow More
Dec. 1 Overcast
Overcast
 4° /-1° 0 mm 0 cm
Dec. 2 Heavy snow
Heavy snow
 0° /-3° 23.2 mm 14.8 cm
Dec. 3 Freezing fog
Freezing fog
 1° /-5° 0 mm 0 cm
Dec. 4 Heavy snow
Heavy snow
 1° /-1° 45.5 mm 31.6 cm
Dec. 5 Light rain shower
Light rain shower
 4° /1° 98 mm 13.7 cm
Dec. 6 Heavy snow
Heavy snow
 1° /0° 70.1 mm 20.1 cm
Dec. 7 Freezing fog
Freezing fog
 3° /0° 0 mm 0 cm
Dec. 8 Moderate or heavy sleet
Moderate or heavy sleet
 5° /1° 178.5 mm 0 cm
Dec. 9 Heavy snow
Heavy snow
 5° /0° 141.8 mm 43.7 cm
Dec. 10 Moderate or heavy sleet
Moderate or heavy sleet
 6° /1° 297.6 mm 49.1 cm
Dec. 11 Heavy snow
Heavy snow
 7° /0° 109.8 mm 3.5 cm
Dec. 12 Moderate rain at times
Moderate rain at times
 5° /2° 18.6 mm 4.1 cm
Dec. 13 Mist
Mist
 8° /2° 0 mm 0 cm
Dec. 14 Fog
Fog
 6° /4° 0 mm 0 cm
Dec. 15 Heavy rain at times
Heavy rain at times
 8° /1° 17 mm 0 cm
Dec. 16 Heavy snow
Heavy snow
 3° /1° 82.1 mm 59.3 cm
Dec. 17 Heavy snow
Heavy snow
 4° /-1° 101.3 mm 17.6 cm
Dec. 18 Heavy snow
Heavy snow
 4° /-1° 95 mm 50.4 cm
Dec. 19 Moderate snow
Moderate snow
 0° /-4° 41.7 mm 28.9 cm
Dec. 20 Moderate or heavy snow showers
Moderate or heavy snow showers
 0° /-3° 46.3 mm 33.5 cm
Dec. 21 Freezing fog
Freezing fog
 1° /-5° 4.8 mm 0 cm
Dec. 22 Mist
Mist
 0° /-3° 6.7 mm 4.8 cm
Dec. 23 Overcast
Overcast
 0° /-2° 8.1 mm 5.8 cm
Dec. 24 Moderate or heavy rain shower
Moderate or heavy rain shower
 2° /-2° 10 mm 4.2 cm
Dec. 25 Moderate or heavy snow showers
Moderate or heavy snow showers
 1° /-3° 19.2 mm 13.9 cm
Dec. 26 Blowing snow
Blowing snow
 0° /-6° 36 mm 11.7 cm
Dec. 27 Moderate snow
Moderate snow
 -4° /-6° 31.2 mm 11.6 cm
Dec. 28 Mist
Mist
 -1° /-7° 0 mm 0 cm
Dec. 29 Mist
Mist
 2° /-5° 0 mm 0 cm
Dec. 30 Overcast
Overcast
 1° /-3° 0 mm 0 cm
Dec. 31 Partly cloudy
Partly cloudy
 4° /-4° 0 mm 0 cm
Next
Important Notice
Our weather forecast for Kittitas County in December 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 Kittitas County forecast closer to your planned date for the most up-to-date weather information.
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Kittitas County in December - FAQ

What are the expected maximum and minimum temperatures in Kittitas County during December?

Brace for cold days with temperatures not exceeding 3° and nights that are likely to be freezing. Winter clothing is essential for comfort and safety.

How much rainfall should be expected in Kittitas County during December?

Significant rainfall exceeding 1482.5 mm is expected in Kittitas County during December, occurring over more than 3 days. Preparing for wet conditions is recommended in your planning.

Will it snow in Kittitas County in December 2026?

Kittitas County experiences an average snowfall of 422.3 cm during December, occurring over 19 days.

What are the typical wind conditions in Kittitas County during December?

The average wind speed in Kittitas County during December is 15 km/h, suggesting breezy to windy conditions, depending on your activities.

Kittitas County snow forecast December 2026

Track daily snowfall levels and discover Kittitas County’s snowy potential this December ❄️
On average, Kittitas County sees 19 snowy days during December, with approximately 422.3 cm of total snowfall.

December rainfall patterns in Kittitas County

Explore the daily rainfall trends and prepare for Kittitas Countys December weather 💧
Typically, Kittitas County has 3 rainy days in December with a total of 1482.5 mm of rainfall.
Top locations in Kittitas County
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Snoqualmie Pass
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Location coordinates Where is Kittitas County?

Get accurate weather forecasts for Kittitas County, located at latitude 47.392 and longitude -121.4. Stay updated with localized weather information tailored for Kittitas County.

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