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United States weather

Weather in Jefferson County, New York for December 2025

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

    Official Weather Alert ⚠️

  • Winter Weather Advisory - See hour by hour.

    • Snow Forecast ❄️

  • The climate of Jefferson County in December is quite snowy, averaging 14 snowy days.
    According to Jefferson County snow forecast for December 2025, 3 snowy days are expected until the end of the month. The closest date with snow is Sunday, December 28.

    • Temperatures

  • Until now, December 2025 in Jefferson County has been nearly identical to the historical average, with a temperature of -1.1 °F (showing only a slight deviation of -0.5 °F).

  • Expect cooler weather in the next days in Jefferson County with the forecast suggesting a temperature of -1.8 °F, lower than the historical average.

  • In general, the average temperature in Jefferson County at the beginning of December is -0.6 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of -2 °F by the end of December.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
13
Dry days
Average rainy days
4
Rainy days
Average snowy days
14
Snow days
Average temperatures
0°/-4°
Temperatures
Average wind speed
22 km/h
Avg max wind
Average humidity
87 %
Avg humidity

Jefferson County Weather December

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

Temperatures trend during December in Jefferson County

See the weather trend as well as the moving average line

December weather in Jefferson County day by day

Click on a date for more information
November January
Date Weather Temperatures Rain Snow More
Dec. 1 Heavy snow
Heavy snow
 0° /-4° 36.8 mm 26.6 cm
Dec. 2 Freezing fog
Freezing fog
 0° /-7° 11.4 mm 8.3 cm
Dec. 3 Cloudy
Cloudy
 0° /-4° 0 mm 0 cm
Dec. 4 Overcast
Overcast
 0° /-7° 10.4 mm 7.5 cm
Dec. 5 Moderate or heavy snow showers
Moderate or heavy snow showers
 -1° /-8° 13.9 mm 5.4 cm
Dec. 6 Overcast
Overcast
 -2° /-7° 3.7 mm 2.7 cm
Dec. 7 Moderate snow
Moderate snow
 -1° /-5° 7 mm 4.6 cm
Dec. 8 Heavy snow
Heavy snow
 -2° /-7° 19.1 mm 13.8 cm
Dec. 9 Moderate rain
Moderate rain
 0° /-7° 11.1 mm 0.6 cm
Dec. 10 Moderate rain
Moderate rain
 3° /-2° 35 mm 5.3 cm
Dec. 11 Heavy snow
Heavy snow
 0° /-6° 24.4 mm 10.6 cm
Dec. 12 Moderate or heavy snow showers
Moderate or heavy snow showers
 -1° /-7° 18.2 mm 10.1 cm
Dec. 13 Partly cloudy
Partly cloudy
 -2° /-6° 5.3 mm 3.8 cm
Dec. 14 Freezing fog
Freezing fog
 -4° /-11° 0 mm 0 cm
Dec. 15 Overcast
Overcast
 -1° /-10° 7.9 mm 3.5 cm
Dec. 16 Overcast
Overcast
 2° /-3° 4.1 mm 2.9 cm
Dec. 17 Moderate snow
Moderate snow
 3° /-1° 10.7 mm 1.8 cm
Dec. 18 Moderate rain at times
Moderate rain at times
 3° /-1° 6.1 mm 3.6 cm
Dec. 19 Overcast
Overcast
 3° /-4° 21.8 mm 3.1 cm
Dec. 20 Patchy moderate snow
Patchy moderate snow
 0° /-6° 2.8 mm 1.2 cm
Dec. 21 Overcast
Overcast
 -3° /-8° 0 mm 0 cm
Dec. 22 Sunny
Sunny
 -4° /-11° 0 mm 0 cm
Dec. 23 Overcast
Overcast
 -2° /-7° 3.8 mm 2.2 cm
Dec. 24 Moderate snow
Moderate snow
 1° /-4° 7.6 mm 5.5 cm
Dec. 25 Cloudy
Cloudy
 -1° /-8° 0 mm 0 cm
Dec. 26 Overcast
Overcast
 -6° /-12° 0 mm 0 cm
Dec. 27 Mist
Mist
 -3° /-7° 0 mm 0 cm
Dec. 28 Moderate or heavy snow showers
Moderate or heavy snow showers
 1° /-15° 6.6 mm 0.9 cm
Dec. 29 Heavy rain
Heavy rain
 6° /-4° 117.8 mm 0 cm
Dec. 30 Moderate or heavy snow showers
Moderate or heavy snow showers
 -10° /-12° 17.1 mm 3.8 cm
Dec. 31 Blizzard
Blizzard
 -1° /-10° 6.1 mm 2.1 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.
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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 159.84 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 ❄️
On average, Jefferson County sees 14 snowy days during December, with approximately 159.8 cm of total snowfall.

December rainfall patterns in Jefferson County

Explore the daily rainfall trends and prepare for Jefferson Countys December weather 💧
Typically, Jefferson County has 4 rainy days in December with a total of 386.5 mm of rainfall.
Top locations in Jefferson County
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BeaumontBirminghamFairfieldLakewoodLouisvilleWatertown
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Location coordinates 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.

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