McAllen (TX)
December
Weather in McAllen, Texas for December 2025
Your guide to McAllen weather in December - trends and predictions
In general, the average temperature in McAllen at the beginning of December is 19.9 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 27.4 °F by the end of December.
The climate of McAllen in December is notably wet, with an average of 12 rainy days, and a total of 29.3 mm of precipitation.
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Temperatures
Rain 🌧️
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19
Dry days
12
Rainy days
0
Snow days
24°/16°
Temperatures
21 km/h
Avg max wind
74 %
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 | 23° /14° | 3.3 mm | 5 | |
| Dec. 2 |  Moderate rain at times | 22° /17° | 2.5 mm | 5 | |
| Dec. 3 |  Heavy rain at times | 20° /14° | 5.2 mm | 5 | |
| Dec. 4 | Overcast | 20° /14° | 6.9 mm | 5 | |
| Dec. 5 | Overcast | 21° /16° | 0.2 mm | 5 | |
| Dec. 6 | Moderate or heavy rain shower | 18° /12° | 5.6 mm | 4 | |
| Dec. 7 |  Patchy rain possible | 15° /9° | 0.7 mm | 4 | |
| Dec. 8 | Overcast | 19° /12° | 0.1 mm | 4 | |
| Dec. 9 | Overcast | 26° /16° | 0 mm | 6 | |
| Dec. 10 | Patchy rain possible | 21° /14° | 0.3 mm | 5 | |
| Dec. 11 |  Sunny | 17° /6° | 0 mm | 5 | |
| Dec. 12 |  Cloudy | 21° /9° | 0 mm | 5 | |
| Dec. 13 | Patchy rain possible | 25° /17° | 0.3 mm | 6 | |
| Dec. 14 | Moderate rain at times | 28° /21° | 1.4 mm | 6 | |
| Dec. 15 | Patchy rain possible | 27° /21° | 0.4 mm | 6 | |
| Dec. 16 | Patchy rain possible | 27° /20° | 0.1 mm | 6 | |
| Dec. 17 | Moderate rain at times | 26° /19° | 1.5 mm | 6 | |
| Dec. 18 | Patchy rain possible | 29° /19° | 0.6 mm | 6 | |
| Dec. 19 | Overcast | 20° /14° | 0 mm | 5 | |
| Dec. 20 | Patchy rain possible | 20° /16° | 0.2 mm | 5 | |
| Dec. 21 | Sunny | 22° /11° | 0 mm | 6 | |
| Dec. 22 | Overcast | 22° /15° | 0 mm | 5 | |
| Dec. 23 | Overcast | 26° /18° | 0 mm | 6 | |
| Dec. 24 | Overcast | 27° /18° | 0 mm | 6 | |
| Dec. 25 | Overcast | 25° /19° | 0 mm | 6 | |
| Dec. 26 | Overcast | 29° /19° | 0 mm | 6 | |
| Dec. 27 | Overcast | 28° /20° | 0 mm | 6 | |
| Dec. 28 | Overcast | 28° /20° | 0 mm | 6 | |
| Dec. 29 | Sunny | 28° /13° | 0 mm | 7 | |
| Dec. 30 |  Partly cloudy | 30° /14° | 0 mm | 8 | |
| Dec. 31 |  Mist | 24° /17° | 0 mm | 5 | |
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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 24° and lows near 16°, suitable for diverse activities and preferences.
How much rainfall should be expected in McAllen during December?
In December, McAllen can expect light to moderate rainfall, totaling 29.3 mm across approximately 12 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in McAllen during December?
The average wind speed in McAllen during December is 21 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 💧
UV exposure in McAllen during December
Stay informed about UV levels for safe outdoor activities throughout the month of December ☀️
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