Delaware County (Glen Mills)
December
Weather in Delaware County, Pennsylvania for December 2026
Your guide to Delaware County weather in December - trends and predictions
With an average of 3 snowy days, Delaware County usually enjoys a light touch of snow in December.
In general, the average temperature in Delaware County at the beginning of December is 4.7 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 5.7 °C by the end of December.
Delaware County experiences moderate rainfall in December, with an average of 6 rainy days and a total precipitation of 209.9 mm.
Is December a good time to visit Delaware County? check out the best time to travel to Delaware County page.
✨ Is December a good time to visit Delaware County? – Ask the AI Weatherman
Snow Forecast ❄️
Temperatures
Rain 🌧️
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22
Dry days
6
Rainy days
3
Snow days
5°/-1°
Temperatures
19 km/h
Avg max wind
76 %
Avg humidity
Delaware County Weather December
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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
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| Dec. 1 |  Overcast | 4° /-1° | 0.5 mm | 0 cm | |
| Dec. 2 |  Heavy rain | 6° /0° | 33.6 mm | 0 cm | |
| Dec. 3 | Heavy rain | 8° /0° | 9.6 mm | 0 cm | |
| Dec. 4 | Overcast | 6° /-1° | 0 mm | 0 cm | |
| Dec. 5 |  Patchy rain possible | 3° /-2° | 1.1 mm | 0.8 cm | |
| Dec. 6 |  Mist | 3° /-2° | 0 mm | 0 cm | |
| Dec. 7 |  Cloudy | 3° /-3° | 0 mm | 0 cm | |
| Dec. 8 | Cloudy | 7° /-1° | 0 mm | 0 cm | |
| Dec. 9 |  Light rain | 5° /-2° | 7.1 mm | 0 cm | |
| Dec. 10 |  Moderate rain | 9° /2° | 10 mm | 0 cm | |
| Dec. 11 |  Light snow showers | 6° /0° | 32.9 mm | 1 cm | |
| Dec. 12 |  Partly cloudy | 3° /-2° | 0 mm | 0 cm | |
| Dec. 13 | Overcast | 2° /-2° | 0 mm | 0 cm | |
| Dec. 14 |  Light snow | 2° /-4° | 5.2 mm | 3.4 cm | |
| Dec. 15 | Overcast | 3° /-4° | 0 mm | 0 cm | |
| Dec. 16 | Light rain | 7° /0° | 8.4 mm | 0 cm | |
| Dec. 17 | Moderate rain | 9° /2° | 13.9 mm | 0 cm | |
| Dec. 18 | Moderate rain | 8° /0° | 15.3 mm | 0 cm | |
| Dec. 19 | Moderate rain | 7° /0° | 17.5 mm | 0.1 cm | |
| Dec. 20 | Overcast | 3° /-2° | 0 mm | 0 cm | |
| Dec. 21 | Overcast | 4° /-2° | 0.6 mm | 0.4 cm | |
| Dec. 22 | Overcast | 1° /-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 | 4° /1° | 19 mm | 2.6 cm | |
| Dec. 28 | Moderate rain | 5° /1° | 17.3 mm | 0.5 cm | |
| Dec. 29 | Light rain shower | 11° /3° | 1.7 mm | 0 cm | |
| Dec. 30 | Moderate rain | 6° /1° | 13.6 mm | 0 cm | |
| Dec. 31 | Partly cloudy | 5° /-1° | 0 mm | 0 cm | |
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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.
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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 6 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 9.9 cm during December, occurring over 3 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 3 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 6 rainy days in December with a total of 209.9 mm of rainfall.
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