Onondaga County (Syracuse)
December
Weather in Onondaga County, New York for December 2026
Your guide to Onondaga County weather in December - trends and predictions
Onondaga County typically experiences moderate snowfall in December, with an average of 10 snowy days.
In general, the average temperature in Onondaga County at the beginning of December is 1.6 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 2.8 °C by the end of December.
Is December a good time to visit Onondaga County? check out the best time to travel to Onondaga County page.
✨ Is December a good time to visit Onondaga County? – Ask the AI Weatherman
Snow Forecast ❄️
Temperatures
More
15
Dry days
6
Rainy days
10
Snow days
2°/-3°
Temperatures
22 km/h
Avg max wind
84 %
Avg humidity
Onondaga County Weather December
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Temperatures trend during December in Onondaga County
See the weather trend as well as the moving average line
December weather in Onondaga County day by day
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| Dec. 1 |  Light rain | 2° /-2° | 3.5 mm | 0 cm | |
| Dec. 2 |  Moderate rain | 4° /-2° | 10.7 mm | 7.2 cm | |
| Dec. 3 | Moderate rain | 3° /0° | 8.6 mm | 0 cm | |
| Dec. 4 |  Light snow | 2° /-2° | 5.6 mm | 3.3 cm | |
| Dec. 5 | Light snow | 0° /-4° | 8.2 mm | 3.1 cm | |
| Dec. 6 |  Overcast | -1° /-5° | 0.8 mm | 0 cm | |
| Dec. 7 | Light snow | 1° /-4° | 0.7 mm | 0.5 cm | |
| Dec. 8 | Overcast | 1° /-4° | 0.7 mm | 0.5 cm | |
| Dec. 9 | Moderate rain | 3° /-3° | 16.5 mm | 0.3 cm | |
| Dec. 10 |  Moderate or heavy rain with thunder | 6° /1° | 19.6 mm | 0.6 cm | |
| Dec. 11 |  Moderate or heavy snow showers | 2° /-2° | 9.2 mm | 5.4 cm | |
| Dec. 12 | Light snow | 0° /-4° | 1.2 mm | 0.9 cm | |
| Dec. 13 |  Light snow showers | -1° /-6° | 0.4 mm | 0.2 cm | |
| Dec. 14 | Light snow | -1° /-6° | 3.8 mm | 2.7 cm | |
| Dec. 15 | Light snow | 2° /-4° | 2.6 mm | 1.9 cm | |
| Dec. 16 | Overcast | 3° /-2° | 0.7 mm | 0 cm | |
| Dec. 17 | Light rain | 5° /1° | 3.6 mm | 0 cm | |
| Dec. 18 | Moderate rain | 6° /1° | 19.4 mm | 0 cm | |
| Dec. 19 | Light snow | 3° /-3° | 12 mm | 4.9 cm | |
| Dec. 20 | Light snow | 1° /-3° | 1.2 mm | 0.4 cm | |
| Dec. 21 | Overcast | -1° /-5° | 0.7 mm | 0.5 cm | |
| Dec. 22 |  Sunny | 1° /-5° | 0 mm | 0 cm | |
| Dec. 23 | Light rain | 1° /-3° | 4.4 mm | 2.8 cm | |
| Dec. 24 | Light rain | 1° /-2° | 6.9 mm | 4.3 cm | |
| Dec. 25 | Overcast | 2° /-2° | 0 mm | 0 cm | |
| Dec. 26 | Light rain | -1° /-4° | 3 mm | 0.6 cm | |
| Dec. 27 | Moderate rain | 2° /-1° | 8.6 mm | 1 cm | |
| Dec. 28 | Light drizzle | 5° /-1° | 0.9 mm | 0 cm | |
| Dec. 29 | Light rain | 7° /1° | 9.4 mm | 0.5 cm | |
| Dec. 30 | Moderate rain | 3° /-2° | 11.4 mm | 0.4 cm | |
| Dec. 31 | Light snow | 2° /-2° | 2.5 mm | 1.8 cm | |
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Important Notice
Our weather forecast for Onondaga 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 Onondaga County forecast closer to your planned date for the most up-to-date weather information.
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Onondaga County in December - FAQ
What are the expected maximum and minimum temperatures in Onondaga County during December?
Brace for cold days with temperatures not exceeding 2° and nights that are likely to be freezing. Winter clothing is essential for comfort and safety.
How much rainfall should be expected in Onondaga County during December?
Significant rainfall exceeding 176.5 mm is expected in Onondaga County during December, occurring over more than 6 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Onondaga County in December 2026?
Onondaga County experiences an average snowfall of 43.9 cm during December, occurring over 10 days.
What are the typical wind conditions in Onondaga County during December?
The average wind speed in Onondaga County during December is 22 km/h, suggesting breezy to windy conditions, depending on your activities.
Onondaga County snow forecast December 2026
Track daily snowfall levels and discover Onondaga County’s snowy potential this December ❄️
On average, Onondaga County sees 10 snowy days during December, with approximately 43.9 cm of total snowfall.
December rainfall patterns in Onondaga County
Explore the daily rainfall trends and prepare for Onondaga Countys December weather 💧
Typically, Onondaga County has 6 rainy days in December with a total of 176.5 mm of rainfall.
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