McAllen (TX)
December
Weather in McAllen, Texas for December 2026
Your guide to McAllen weather in December - trends and predictions
In general, the average temperature in McAllen at the beginning of December is 19.6 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 25.6 °F by the end of December.
McAllen experiences moderate rainfall in December, with an average of 7 rainy days and a total precipitation of 18.3 mm.
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Temperatures
Rain 🌧️
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24
Dry days
7
Rainy days
0
Snow days
23°/15°
Temperatures
22 km/h
Avg max wind
73 %
Avg humidity
McAllen Weather December
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Temperatures trend during December in McAllen
See the weather trend as well as the moving average line
December weather in McAllen day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Dec. 1 |  Overcast | 17° /11° | 1.6 mm | 4 | |
| Dec. 2 |  Moderate rain at times | 18° /13° | 1.2 mm | 4 | |
| Dec. 3 |  Heavy rain at times | 19° /12° | 2.6 mm | 5 | |
| Dec. 4 | Overcast | 21° /14° | 3.5 mm | 5 | |
| Dec. 5 | Overcast | 19° /12° | 1.6 mm | 5 | |
| Dec. 6 | Moderate or heavy rain shower | 21° /13° | 2.8 mm | 5 | |
| Dec. 7 |  Patchy rain possible | 22° /14° | 0.3 mm | 5 | |
| Dec. 8 | Overcast | 19° /11° | 0.1 mm | 5 | |
| Dec. 9 | Overcast | 23° /13° | 0 mm | 5 | |
| Dec. 10 | Patchy rain possible | 24° /12° | 0.2 mm | 6 | |
| Dec. 11 |  Sunny | 20° /12° | 0 mm | 5 | |
| Dec. 12 |  Cloudy | 24° /13° | 0 mm | 6 | |
| Dec. 13 | Patchy rain possible | 27° /19° | 0.2 mm | 6 | |
| Dec. 14 | Moderate rain at times | 27° /17° | 0.7 mm | 6 | |
| Dec. 15 | Patchy rain possible | 20° /14° | 0.2 mm | 5 | |
| Dec. 16 | Patchy rain possible | 20° /15° | 0.1 mm | 5 | |
| Dec. 17 | Moderate rain at times | 23° /17° | 2.8 mm | 6 | |
| Dec. 18 | Patchy rain possible | 29° /18° | 0.3 mm | 6 | |
| Dec. 19 | Overcast | 20° /15° | 0 mm | 5 | |
| Dec. 20 | Patchy rain possible | 25° /14° | 0.1 mm | 4 | |
| Dec. 21 | Sunny | 25° /15° | 0 mm | 4 | |
| Dec. 22 | Overcast | 26° /18° | 0 mm | 3 | |
| Dec. 23 | Overcast | 26° /19° | 0 mm | 4 | |
| Dec. 24 | Overcast | 26° /19° | 0 mm | 4 | |
| Dec. 25 | Overcast | 26° /20° | 0 mm | 4 | |
| Dec. 26 | Overcast | 28° /19° | 0 mm | 4 | |
| Dec. 27 | Overcast | 29° /20° | 0 mm | 4 | |
| Dec. 28 | Overcast | 29° /20° | 0 mm | 4 | |
| Dec. 29 | Sunny | 25° /12° | 0 mm | 4 | |
| Dec. 30 |  Partly cloudy | 21° /11° | 0 mm | 4 | |
| Dec. 31 |  Mist | 21° /14° | 0 mm | 4 | |
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Important Notice
Our weather forecast for McAllen 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 McAllen forecast closer to your planned date for the most up-to-date weather information.
Change Month
McAllen in December - FAQ
What are the expected maximum and minimum temperatures in McAllen during December?
During December, expect a variety of temperatures with highs around 23° and lows near 15°, suitable for diverse activities and preferences.
How much rainfall should be expected in McAllen during December?
Expect minimal rainfall in McAllen during December, with a total of 18.3 mm over approximately 7 days. This minimal precipitation is unlikely to significantly impact plans.
What are the typical wind conditions in McAllen during December?
The average wind speed in McAllen during December is 22 km/h, suggesting breezy to windy conditions, depending on your activities.
December rainfall patterns in McAllen
Explore the daily rainfall trends and prepare for McAllens December weather 💧
Typically, McAllen has 7 rainy days in December with a total of 18.3 mm of rainfall.
UV exposure in McAllen during December
Stay informed about UV levels for safe outdoor activities throughout the month of December ☀️
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