Allegheny County
December
Weather in Allegheny County for December 2024
Your guide to Allegheny County weather in December - trends and predictions
In general, the average temperature in Allegheny County at the beginning of December is 7.4 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 6.4 °F by the end of December.
Allegheny County sees moderate rainfall in December, averaging 6 rainy days.
Allegheny County experiences moderate snowfall in December, with an average of 6 snowy days.
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19
Dry days
6
Rainy days
6
Snow days
8°/-1°
Temperatures
15 km/h
Avg max wind
75 %
Avg humidity
Allegheny County in December average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  7° | ||||||
| 2  14° | 3 12° | 4  6° | 5  4° | 6  3° | 7 6° | 8  14° |
| 9 16° | 10  15° | 11 3° | 12  7° | 13 4° | 14 5° | 15 8° |
| 16 10° | 17 9° | 18 7° | 19 0° | 20 4° | 21  4° | 22 6° |
| 23  6° | 24  -1° | 25 4° | 26 4° | 27 5° | 28 9° | 29 7° |
| 30 8° | 31  8° |
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Temperatures trend during December in Allegheny County
See the weather trend as well as the moving average line
December weather day by day
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| Dec. 1 | Light rain | 7° /4° | 2.8 mm | 0 cm | |
| Dec. 2 | Patchy rain possible | 14° /7° | 0.1 mm | 0 cm | |
| Dec. 3 | Light rain shower | 12° /6° | 16.8 mm | 0 cm | |
| Dec. 4 | Overcast | 6° /3° | 0 mm | 0 cm | |
| Dec. 5 | Moderate or heavy snow showers | 4° /1° | 2.9 mm | 2.5 cm | |
| Dec. 6 | Light snow showers | 3° /0° | 0.6 mm | 0.5 cm | |
| Dec. 7 | Overcast | 6° /0° | 0 mm | 0 cm | |
| Dec. 8 | Partly cloudy | 14° /2° | 0 mm | 0 cm | |
| Dec. 9 | Patchy rain possible | 16° /6° | 0.9 mm | 0 cm | |
| Dec. 10 | Moderate or heavy rain with thunder | 15° /3° | 63.1 mm | 0 cm | |
| Dec. 11 | Moderate or heavy snow showers | 3° /0° | 2 mm | 1.6 cm | |
| Dec. 12 | Sunny | 7° /-1° | 0 mm | 0 cm | |
| Dec. 13 | Partly cloudy | 4° /-1° | 0 mm | 0 cm | |
| Dec. 14 | Sunny | 5° /-2° | 0 mm | 0 cm | |
| Dec. 15 | Sunny | 8° /-1° | 0 mm | 0 cm | |
| Dec. 16 | Sunny | 10° /0° | 0 mm | 0 cm | |
| Dec. 17 | Light rain | 9° /6° | 6.7 mm | 0 cm | |
| Dec. 18 | Moderate or heavy snow showers | 7° /0° | 2.8 mm | 1 cm | |
| Dec. 19 | Light snow showers | 0° /-2° | 0.8 mm | 0.7 cm | |
| Dec. 20 | Partly cloudy | 4° /-3° | 0 mm | 0 cm | |
| Dec. 21 | Cloudy | 4° /-1° | 0 mm | 0 cm | |
| Dec. 22 | Patchy moderate snow | 6° /0° | 2.8 mm | 0.6 cm | |
| Dec. 23 | Moderate snow | 6° /-7° | 4.2 mm | 1.3 cm | |
| Dec. 24 | Light freezing rain | -1° /-6° | 0.3 mm | 0 cm | |
| Dec. 25 | Overcast | 4° /-3° | 0.2 mm | 0 cm | |
| Dec. 26 | Light freezing rain | 4° /-2° | 2.1 mm | 0 cm | |
| Dec. 27 | Overcast | 5° /0° | 14.9 mm | 0 cm | |
| Dec. 28 | Overcast | 9° /2° | 0.8 mm | 0 cm | |
| Dec. 29 | Cloudy | 7° /0° | 0 mm | 0 cm | |
| Dec. 30 | Overcast | 8° /3° | 0.5 mm | 0.3 cm | |
| Dec. 31 | Heavy rain at times | 8° /2° | 3.7 mm | 0 cm | |
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Important Notice
Our weather forecast for Allegheny 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 Allegheny County forecast closer to your planned date for the most up-to-date weather information.
Allegheny County in December - FAQ
What are the expected maximum and minimum temperatures in Allegheny County during December?
Prepare for cooler days with highs just around 8° and colder nights, dipping below -1°.
How much rainfall should be expected in Allegheny County during December?
Significant rainfall exceeding 158.3 mm is expected in Allegheny County during December, occurring over more than 6 days. Preparing for wet conditions is recommended in your planning.
Is snowfall common in Allegheny County during December?
Allegheny County experiences an average snowfall of 10.7 cm during December, occurring over 6 days, which may interest winter sports enthusiasts.
What are the typical wind conditions in Allegheny County during December?
The average wind speed in Allegheny County during December is 15 km/h, suggesting breezy to windy conditions, depending on your activities.
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Where is Allegheny County?Get accurate weather forecasts for Allegheny County, located at latitude 40.441 and longitude -79.996. Stay updated with localized weather information tailored for Allegheny County.
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