Collin County (Plano)
December
Weather in Collin County for December 2025
Your guide to Collin County weather in December - trends and predictions
In general, the average temperature in Collin County at the beginning of December is 15.4 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 14.6 °F by the end of December.
Collin County experiences moderate rainfall in December, with an average of 8 rainy days and a total precipitation of 97.1 mm.
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Temperatures
Rain 🌧️
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23
Dry days
8
Rainy days
0
Snow days
14°/6°
Temperatures
21 km/h
Avg max wind
58 %
Avg humidity
Collin County in December average weather
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| Sun. | Mon. | Tue. | Wed. | Thu. | Fri. | Sat. |
|---|---|---|---|---|---|---|
| 1  15° | 2  19° | 3  17° | 4 13° | 5 16° | 6 14° | |
| 7 14° | 8  19° | 9 14° | 10 12° | 11 15° | 12 15° | 13 12° |
| 14 18° | 15 17° | 16 16° | 17 17° | 18 15° | 19 10° | 20 15° |
| 21  14° | 22 13° | 23  9° | 24 12° | 25 10° | 26 14° | 27 12° |
| 28 16° | 29 15° | 30 18° | 31 17° |
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Temperatures trend during December in Collin County
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December weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Dec. 1 | Overcast | 15° /5° | 0 mm | 4 | |
| Dec. 2 | Fog | 19° /4° | 0 mm | 5 | |
| Dec. 3 | Sunny | 17° /2° | 0 mm | 5 | |
| Dec. 4 | Sunny | 13° /6° | 18 mm | 4 | |
| Dec. 5 | Sunny | 16° /5° | 0 mm | 5 | |
| Dec. 6 | Sunny | 14° /2° | 0 mm | 4 | |
| Dec. 7 | Overcast | 14° /5° | 9.6 mm | 3 | |
| Dec. 8 | Patchy rain possible | 19° /10° | 6.9 mm | 4 | |
| Dec. 9 | Fog | 14° /9° | 0 mm | 4 | |
| Dec. 10 | Sunny | 12° /2° | 0 mm | 4 | |
| Dec. 11 | Sunny | 15° /3° | 0 mm | 5 | |
| Dec. 12 | Overcast | 15° /6° | 0 mm | 4 | |
| Dec. 13 | Patchy rain possible | 12° /8° | 3.2 mm | 3 | |
| Dec. 14 | Overcast | 18° /9° | 4.5 mm | 5 | |
| Dec. 15 | Light rain shower | 17° /9° | 11.9 mm | 4 | |
| Dec. 16 | Sunny | 16° /9° | 2.6 mm | 4 | |
| Dec. 17 | Sunny | 17° /9° | 2.3 mm | 5 | |
| Dec. 18 | Sunny | 15° /6° | 13.2 mm | 4 | |
| Dec. 19 | Overcast | 10° /3° | 0 mm | 3 | |
| Dec. 20 | Overcast | 15° /6° | 0 mm | 4 | |
| Dec. 21 | Light rain | 14° /6° | 5.2 mm | 4 | |
| Dec. 22 | Overcast | 13° /2° | 0.8 mm | 3 | |
| Dec. 23 | Partly cloudy | 9° /4° | 1.1 mm | 3 | |
| Dec. 24 | Overcast | 12° /7° | 21.7 mm | 3 | |
| Dec. 25 | Sunny | 10° /4° | 1.4 mm | 3 | |
| Dec. 26 | Sunny | 14° /5° | 15 mm | 4 | |
| Dec. 27 | Overcast | 12° /3° | 0 mm | 3 | |
| Dec. 28 | Overcast | 16° /6° | 0 mm | 4 | |
| Dec. 29 | Patchy rain possible | 15° /7° | 0.1 mm | 4 | |
| Dec. 30 | Overcast | 18° /8° | 0 mm | 4 | |
| Dec. 31 | Sunny | 17° /8° | 0 mm | 5 | |
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Important Notice
Our weather forecast for Collin 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 Collin County forecast closer to your planned date for the most up-to-date weather information.
Collin County in December - FAQ
What are the expected maximum and minimum temperatures in Collin County during December?
During December, expect a variety of temperatures with highs around 14° and lows near 6°, suitable for diverse activities and preferences.
How much rainfall should be expected in Collin County during December?
Moderate rainfall is anticipated in Collin County during December, with a total of 97.1 mm spread over approximately 8 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Collin County during December?
The average wind speed in Collin County during December is 21 km/h, suggesting breezy to windy conditions, depending on your activities.
December rainfall patterns in Collin County
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Where is Collin County?Get accurate weather forecasts for Collin County, located at latitude 33.02 and longitude -96.699. Stay updated with localized weather information tailored for Collin County.
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