Jefferson County (Watertown)
December
Weather in Jefferson County for December 2025
Your guide to Jefferson County weather in December - trends and predictions
The climate of Jefferson County in December is quite snowy, averaging 14 snowy days.
In general, the average temperature in Jefferson County at the beginning of December is -0.7 °F. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 1.7 °F by the end of December.
New! Chat with our AI weatherman - it’s amazing and free.
Snow Forecast ❄️
Temperatures
More
13
Dry days
4
Rainy days
14
Snow days
0°/-4°
Temperatures
22 km/h
Avg max wind
87 %
Avg humidity
Jefferson County in December average weather
Move between months or click on a day
| Sun. | Mon. | Tue. | Wed. | Thu. | Fri. | Sat. |
|---|---|---|---|---|---|---|
| 1  0° | 2  0° | 3  0° | 4  0° | 5  0° | 6 -4° | |
| 7  -1° | 8 2° | 9  2° | 10 4° | 11 2° | 12 0° | 13  -3° |
| 14 -2° | 15 0° | 16 5° | 17 5° | 18  2° | 19 0° | 20  0° |
| 21 -6° | 22  -9° | 23 -4° | 24 0° | 25 -3° | 26 -5° | 27  -3° |
| 28 4° | 29 8° | 30 8° | 31 3° |
You can click on date
Access Jefferson County weather forecasts with a simple click. Select any date for comprehensive insights on temperature, rainfall, and wind conditions.
Temperatures trend during December in Jefferson County
See the weather trend as well as the moving average line
December weather day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| Dec. 1 | Heavy snow | 0° /-3° | 65.7 mm | 47.5 cm | |
| Dec. 2 | Freezing fog | 0° /-8° | 3.7 mm | 2.6 cm | |
| Dec. 3 | Cloudy | 0° /-2° | 0 mm | 0 cm | |
| Dec. 4 | Overcast | 0° /-3° | 0 mm | 0 cm | |
| Dec. 5 | Moderate or heavy snow showers | 0° /-3° | 26.7 mm | 10 cm | |
| Dec. 6 | Overcast | -4° /-8° | 0 mm | 0 cm | |
| Dec. 7 | Moderate snow | -1° /-5° | 6.8 mm | 4 cm | |
| Dec. 8 | Heavy snow | 2° /-2° | 38.2 mm | 27.6 cm | |
| Dec. 9 | Moderate rain | 2° /-3° | 16.4 mm | 0 cm | |
| Dec. 10 | Moderate rain | 4° /2° | 28.8 mm | 0 cm | |
| Dec. 11 | Heavy snow | 2° /0° | 33.9 mm | 10.4 cm | |
| Dec. 12 | Moderate or heavy snow showers | 0° /-3° | 36.5 mm | 20.2 cm | |
| Dec. 13 | Partly cloudy | -3° /-6° | 10.6 mm | 7.7 cm | |
| Dec. 14 | Freezing fog | -2° /-12° | 0 mm | 0 cm | |
| Dec. 15 | Overcast | 0° /-8° | 0 mm | 0 cm | |
| Dec. 16 | Overcast | 5° /0° | 0 mm | 0 cm | |
| Dec. 17 | Moderate snow | 5° /1° | 16.3 mm | 1.5 cm | |
| Dec. 18 | Moderate rain at times | 2° /0° | 12.2 mm | 7.2 cm | |
| Dec. 19 | Overcast | 0° /-4° | 8.6 mm | 6.2 cm | |
| Dec. 20 | Patchy moderate snow | 0° /-4° | 3.3 mm | 2.4 cm | |
| Dec. 21 | Overcast | -6° /-10° | 0 mm | 0 cm | |
| Dec. 22 | Sunny | -9° /-15° | 0 mm | 0 cm | |
| Dec. 23 | Overcast | -4° /-13° | 0 mm | 0 cm | |
| Dec. 24 | Moderate snow | 0° /-4° | 15.1 mm | 10.9 cm | |
| Dec. 25 | Cloudy | -3° /-6° | 0 mm | 0 cm | |
| Dec. 26 | Overcast | -5° /-8° | 0 mm | 0 cm | |
| Dec. 27 | Mist | -3° /-7° | 0 mm | 0 cm | |
| Dec. 28 | Fog | 4° /-2° | 0 mm | 0 cm | |
| Dec. 29 | Moderate or heavy rain shower | 8° /2° | 52.6 mm | 0 cm | |
| Dec. 30 | Moderate rain at times | 8° /1° | 3.4 mm | 0 cm | |
| Dec. 31 | Overcast | 3° /1° | 7.8 mm | 1.8 cm | |
| Next | |||||
Important Notice
Our weather forecast for Jefferson 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 Jefferson County forecast closer to your planned date for the most up-to-date weather information.
Jefferson County in December - FAQ
What are the expected maximum and minimum temperatures in Jefferson County during December?
Brace for cold days with temperatures not exceeding 0° and nights that are likely to be freezing. Winter clothing is essential for comfort and safety.
How much rainfall should be expected in Jefferson County during December?
Significant rainfall exceeding 386.5 mm is expected in Jefferson County during December, occurring over more than 4 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Jefferson County in December 2025?
Jefferson County experiences an average snowfall of 159.8 cm during December, occurring over 14 days.
What are the typical wind conditions in Jefferson County during December?
The average wind speed in Jefferson County during December is 22 km/h, suggesting breezy to windy conditions, depending on your activities.
Jefferson County snow forecast December 2025
Track daily snowfall levels and discover Jefferson County’s snowy potential this December ❄️
December rainfall patterns in Jefferson County
Explore the daily rainfall trends and prepare for Jefferson Countys December weather 💧
Top locations in Jefferson County
Select a location for an accurate weather forecast
More Locations Quick links
You are here
Where is Jefferson County?Get accurate weather forecasts for Jefferson County, located at latitude 43.975 and longitude -75.911. Stay updated with localized weather information tailored for Jefferson County.
Found a mistake?
We appreciate your attention to details. Tell us here.