Delaware County (Glen Mills)
December
Weather in Delaware County, Pennsylvania for December 2026
Your guide to Delaware County weather in December - trends and predictions
Delaware County typically experiences moderate snowfall in December, with an average of 8 snowy days.
In general, the average temperature in Delaware County at the beginning of December is 5.1 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 6.1 °C by the end of December.
New! Chat with our AI weatherman - it’s amazing and free.
Snow Forecast ❄️
Temperatures
More
13
Dry days
10
Rainy days
8
Snow days
5°/-1°
Temperatures
19 km/h
Avg max wind
75 %
Avg humidity
Delaware County Weather December
Move between months or click on a day
Temperatures trend during December in Delaware County
See the weather trend as well as the moving average line
December weather in Delaware County day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| Dec. 1 |  Overcast | 4° /-2° | 0.5 mm | 0 cm | |
| Dec. 2 |  Fog | 6° /0° | 33.6 mm | 0 cm | |
| Dec. 3 |  Heavy rain | 8° /0° | 9.6 mm | 0 cm | |
| Dec. 4 | Overcast | 7° /-2° | 0 mm | 0 cm | |
| Dec. 5 | Overcast | 3° /-3° | 1.1 mm | 0.8 cm | |
| Dec. 6 | Mist | 4° /-2° | 0 mm | 0 cm | |
| Dec. 7 |  Light snow | 4° /-3° | 0 mm | 0 cm | |
| Dec. 8 |  Cloudy | 7° /-1° | 0 mm | 0 cm | |
| Dec. 9 | Fog | 6° /-2° | 7.1 mm | 0 cm | |
| Dec. 10 |  Light rain shower | 9° /1° | 10 mm | 0 cm | |
| Dec. 11 |  Light snow showers | 6° /0° | 32.9 mm | 1 cm | |
| Dec. 12 |  Partly cloudy | 4° /-2° | 0 mm | 0 cm | |
| Dec. 13 | Overcast | 2° /-2° | 0 mm | 0 cm | |
| Dec. 14 | Overcast | 2° /-4° | 5.2 mm | 3.4 cm | |
| Dec. 15 | Overcast | 3° /-4° | 0 mm | 0 cm | |
| Dec. 16 | Overcast | 7° /-1° | 8.4 mm | 0 cm | |
| Dec. 17 |  Light rain | 9° /2° | 13.9 mm | 0 cm | |
| Dec. 18 | Light rain | 9° /-1° | 15.3 mm | 0 cm | |
| Dec. 19 | Overcast | 7° /0° | 17.5 mm | 0.1 cm | |
| Dec. 20 | Overcast | 3° /-3° | 0 mm | 0 cm | |
| Dec. 21 | Overcast | 4° /-2° | 0.6 mm | 0.4 cm | |
| Dec. 22 | Overcast | 2° /-4° | 0 mm | 0 cm | |
| Dec. 23 | Overcast | 2° /-3° | 0 mm | 0 cm | |
| Dec. 24 | Light drizzle | 5° /0° | 1.6 mm | 0.4 cm | |
| Dec. 25 | Partly cloudy | 5° /1° | 0 mm | 0 cm | |
| Dec. 26 | Patchy rain possible | 3° /-2° | 1 mm | 0.7 cm | |
| Dec. 27 | Heavy rain | 5° /1° | 19 mm | 2.6 cm | |
| Dec. 28 | Fog | 6° /1° | 17.3 mm | 0.5 cm | |
| Dec. 29 | Light rain shower | 12° /3° | 1.7 mm | 0 cm | |
| Dec. 30 | Overcast | 6° /1° | 13.6 mm | 0 cm | |
| Dec. 31 | Partly cloudy | 6° /-2° | 0 mm | 0 cm | |
| Next | |||||
Important Notice
Our weather forecast for Delaware 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 Delaware County forecast closer to your planned date for the most up-to-date weather information.
Change Month
Delaware County in December - FAQ
What are the expected maximum and minimum temperatures in Delaware County during December?
Brace for cold days with temperatures not exceeding 5° and nights that are likely to be freezing. Winter clothing is essential for comfort and safety.
How much rainfall should be expected in Delaware County during December?
Significant rainfall exceeding 209.9 mm is expected in Delaware County during December, occurring over more than 10 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Delaware County in December 2026?
Delaware County experiences an average snowfall of 9.87667 cm during December, occurring over 8 days.
What are the typical wind conditions in Delaware County during December?
The average wind speed in Delaware County during December is 19 km/h, suggesting breezy to windy conditions, depending on your activities.
Delaware County snow forecast December 2026
Track daily snowfall levels and discover Delaware County’s snowy potential this December ❄️
On average, Delaware County sees 8 snowy days during December, with approximately 9.9 cm of total snowfall.
December rainfall patterns in Delaware County
Explore the daily rainfall trends and prepare for Delaware Countys December weather 💧
Typically, Delaware County has 10 rainy days in December with a total of 209.9 mm of rainfall.
Top locations in Delaware County
Select a location for an accurate weather forecast
More Locations Quick links
More Delaware County weather pages
You are here
Where is Delaware County?Get accurate weather forecasts for Delaware County, located at latitude 39.919 and longitude -75.492. Stay updated with localized weather information tailored for Delaware County.
Found a mistake?
We appreciate your attention to details. Tell us here.