Katy (TX)
December
Weather in Katy, Texas for December 2026
Your guide to Katy weather in December - trends and predictions
In general, the average temperature in Katy at the beginning of December is 13.9 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 19.3 °F by the end of December.
Katy experiences moderate rainfall in December, with an average of 6 rainy days and a total precipitation of 109.9 mm.
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Temperatures
Rain 🌧️
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25
Dry days
6
Rainy days
0
Snow days
18°/10°
Temperatures
19 km/h
Avg max wind
79 %
Avg humidity
Katy Weather December
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Temperatures trend during December in Katy
See the weather trend as well as the moving average line
December weather in Katy day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Dec. 1 |  Heavy rain at times | 9° /6° | 8.1 mm | 0 | |
| Dec. 2 |  Overcast | 12° /2° | 0 mm | 2 | |
| Dec. 3 |  Mist | 12° /5° | 0 mm | 1 | |
| Dec. 4 |  Torrential rain shower | 12° /10° | 78.3 mm | 0 | |
| Dec. 5 |  Light rain shower | 12° /7° | 4.8 mm | 0 | |
| Dec. 6 | Overcast | 19° /9° | 0 mm | 1 | |
| Dec. 7 | Fog | 21° /9° | 0 mm | 2 | |
| Dec. 8 | Overcast | 12° /5° | 0 mm | 1 | |
| Dec. 9 | Fog | 15° /3° | 0 mm | 2 | |
| Dec. 10 | Overcast | 24° /11° | 0 mm | 2 | |
| Dec. 11 |  Sunny | 20° /5° | 0 mm | 2 | |
| Dec. 12 | Fog | 20° /10° | 0 mm | 1 | |
| Dec. 13 |  Light rain | 18° /16° | 10.8 mm | 0 | |
| Dec. 14 | Fog | 20° /8° | 3.1 mm | 0 | |
| Dec. 15 | Sunny | 11° /0° | 0 mm | 2 | |
| Dec. 16 | Overcast | 13° /5° | 0 mm | 0 | |
| Dec. 17 | Fog | 21° /14° | 0 mm | 0 | |
| Dec. 18 | Fog | 25° /14° | 0 mm | 1 | |
| Dec. 19 | Sunny | 19° /8° | 0 mm | 2 | |
| Dec. 20 | Mist | 21° /9° | 0 mm | 1 | |
| Dec. 21 | Fog | 24° /18° | 0 mm | 0 | |
| Dec. 22 | Fog | 25° /19° | 0 mm | 1 | |
| Dec. 23 | Fog | 24° /19° | 0 mm | 0 | |
| Dec. 24 | Mist | 21° /19° | 0 mm | 0 | |
| Dec. 25 | Fog | 19° /17° | 0 mm | 0 | |
| Dec. 26 | Fog | 22° /17° | 0 mm | 0 | |
| Dec. 27 | Overcast | 26° /20° | 0 mm | 1 | |
| Dec. 28 | Overcast | 24° /19° | 0 mm | 1 | |
| Dec. 29 | Overcast | 16° /7° | 4.8 mm | 1 | |
| Dec. 30 |  Partly cloudy | 12° /4° | 0 mm | 2 | |
| Dec. 31 | Sunny | 16° /2° | 0 mm | 2 | |
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Important Notice
Our weather forecast for Katy 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 Katy forecast closer to your planned date for the most up-to-date weather information.
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Katy in December - FAQ
What are the expected maximum and minimum temperatures in Katy during December?
Enjoy moderate daytime temperatures of up to 18° and cooler nights around 10°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Katy during December?
Significant rainfall exceeding 109.9 mm is expected in Katy during December, occurring over more than 6 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Katy during December?
The average wind speed in Katy during December is 19 km/h, suggesting breezy to windy conditions, depending on your activities.
December rainfall patterns in Katy
Explore the daily rainfall trends and prepare for Katys December weather 💧
Typically, Katy has 6 rainy days in December with a total of 109.9 mm of rainfall.
UV exposure in Katy during December
Stay informed about UV levels for safe outdoor activities throughout the month of December ☀️
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