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Delaware County (Glen Mills)
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United States weather

Weather in Delaware County, Pennsylvania for December 2025

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

    Snow Forecast ❄️

  • With an average of 4 snowy days, Delaware County usually enjoys a light touch of snow in December.
    According to Delaware County snow forecast for December 2025, no snow is expected until the end of the month.

    • Temperatures

  • Until now, December 2025 in Delaware County is cooler than usual, with temperatures averaging 1.7 °F, this is -3.3 °F below the typical seasonal average.

  • The forecast for the next days in Delaware County predicts temperatures to be around 6 °F, close to the historical average.

  • In general, the average temperature in Delaware County at the beginning of December is 5.1 °F. As the month progressed, temperatures tended to moderately rise, reaching an average of 6.6 °F by the end of December.

    • More

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Average dry days
17
Dry days
Average rainy days
10
Rainy days
Average snowy days
4
Snow days
Average temperatures
6°/0°
Temperatures
Average wind speed
18 km/h
Avg max wind
Average humidity
76 %
Avg humidity

Delaware County Weather December

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

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
November January
Date Weather Temperatures Rain Snow More
Dec. 1 Overcast
Overcast
 4° /-2° 0.5 mm 0 cm
Dec. 2 Fog
Fog
 6° /0° 33.6 mm 0 cm
Dec. 3 Heavy rain
Heavy rain
 8° /0° 9.6 mm 0 cm
Dec. 4 Overcast
Overcast
 7° /-2° 0 mm 0 cm
Dec. 5 Overcast
Overcast
 3° /-3° 1.1 mm 0.8 cm
Dec. 6 Mist
Mist
 4° /-2° 0 mm 0 cm
Dec. 7 Light snow
Light snow
 4° /-3° 0 mm 0 cm
Dec. 8 Cloudy
Cloudy
 7° /-1° 0 mm 0 cm
Dec. 9 Fog
Fog
 6° /-2° 7.1 mm 0 cm
Dec. 10 Light rain shower
Light rain shower
 9° /1° 10 mm 0 cm
Dec. 11 Light snow showers
Light snow showers
 6° /0° 32.9 mm 1 cm
Dec. 12 Partly cloudy
Partly cloudy
 4° /-2° 0 mm 0 cm
Dec. 13 Overcast
Overcast
 2° /-2° 0 mm 0 cm
Dec. 14 Overcast
Overcast
 2° /-4° 5.2 mm 3.4 cm
Dec. 15 Overcast
Overcast
 3° /-4° 0 mm 0 cm
Dec. 16 Overcast
Overcast
 10° /2° 12.6 mm 0 cm
Dec. 17 Overcast
Overcast
 6° /-7° 0 mm 0 cm
Dec. 18 Mist
Mist
 4° /-6° 0 mm 0 cm
Dec. 19 Heavy rain
Heavy rain
 12° /-1° 118.9 mm 0 cm
Dec. 20 Sunny
Sunny
 3° /-2° 0 mm 0 cm
Dec. 21 Sunny
Sunny
 8° /-1° 0 mm 0 cm
Dec. 22 Sunny
Sunny
 0° /-4° 0 mm 0 cm
Dec. 23 Light freezing rain
Light freezing rain
 1° /-5° 0.2 mm 0 cm
Dec. 24 Partly cloudy
Partly cloudy
 6° /1° 0 mm 0 cm
Dec. 25 Patchy rain possible
Patchy rain possible
 5° /-1° 0.2 mm 0 cm
Dec. 26 Patchy rain possible
Patchy rain possible
 11° /3° 1.1 mm 0 cm
Dec. 27 Moderate rain
Moderate rain
 8° /5° 6.3 mm 0 cm
Dec. 28 Patchy rain possible
Patchy rain possible
 10° /3° 0.7 mm 0 cm
Dec. 29 Sunny
Sunny
 2° /-2° 0 mm 0 cm
Dec. 30 Overcast
Overcast
 3° /-3° 0 mm 0 cm
Dec. 31 Partly cloudy
Partly cloudy
 7° /0° 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.
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Delaware County in December - FAQ

What are the expected maximum and minimum temperatures in Delaware County during December?
Prepare for cooler days with highs just around 6° and colder nights, dipping below 0°.
How much rainfall should be expected in Delaware County during December?
Significant rainfall exceeding 218.8 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 2025?
Delaware County experiences an average snowfall of 3.69 cm during December, occurring over 4 days.
What are the typical wind conditions in Delaware County during December?
The average wind speed in Delaware County during December is 18 km/h, suggesting breezy to windy conditions, depending on your activities.

Delaware County snow forecast December 2025

Track daily snowfall levels and discover Delaware County’s snowy potential this December ❄️
On average, Delaware County sees 4 snowy days during December, with approximately 3.7 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 218.8 mm of rainfall.
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Glen Mills
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Location coordinates 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.

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