This guide dives into the weather forecast for Missouri City, TX, offers practical travel tips, highlights festive events, and provides expert advice to ensure a comfortable and enjoyable experience. Whether you’re a traveler, a new resident, or a local planner, understanding the Missouri City weather in December is key to preparing for your visit or daily activities. With mild temperatures and a festive vibe, December in Missouri City offers a unique blend of holiday cheer and pleasant weather.
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Overview of December Weather in Missouri City
December in Missouri City brings cool, comfortable weather, making it an ideal time for both outdoor adventures and cozy indoor activities. Below, we break down the average temperature, precipitation, and other weather factors to help you plan your trip or daily routine.

Comfortable Temperature Ranges
Missouri City weather in December is defined by mild and stable temperatures, making it one of the most comfortable months of the year. Daytime highs typically range from 64°F to 70°F, offering cool yet manageable conditions. Nighttime lows often drop to between 45°F and 48°F, bringing a gentle chill that’s perfect for cozy indoor settings. These consistent temperatures reduce the likelihood of extreme cold snaps, making it easier to manage heating needs efficiently.
Gentle Breezes Add Seasonal Chill
Light to moderate breezes are common throughout December. These gentle winds enhance the seasonal atmosphere and add a crisp edge to the air, especially during early mornings and late evenings. For homeowners, this means managing indoor airflow and sealing drafts becomes essential to maintain warmth and comfort indoors.
Minimal Rainfall with Occasional Drizzle
Rainfall is low in Missouri City during December, making it one of the drier months of the year. While occasional light showers or drizzle may occur on overcast days, there is little risk of disruptive storms. This minimal precipitation is good news for outdoor holiday decorations and for maintaining stable humidity levels indoors.
Low UV Index and Reduced Sunlight
With the sun lower in the sky, the UV index in December remains low. While this reduces the risk of UV-related skin damage, it also means less natural sunlight enters the home, which can lead to cooler indoor conditions. For homeowners, this makes efficient heating systems and good insulation more important than ever.
Perfect Weather for the Holiday Season
The mild, dry December weather in Missouri City creates the perfect backdrop for holiday celebrations. Whether you’re hanging outdoor lights, visiting a local Christmas market, or enjoying hot cocoa by the fireplace, the comfortable temperatures and limited rainfall help keep the festive mood going strong. It’s also an ideal time to optimize your HVAC system to stay cozy without overworking your heater.
Here is a daily weather chart for December:
Date | High (°F) | Low (°F) | Weather Description |
---|---|---|---|
1-Dec | 70°F | 48°F | Cool and partly cloudy |
2-Dec | 70°F | 48°F | Mild and mostly clear |
3-Dec | 70°F | 48°F | Possible light drizzle |
4-Dec | 68°F | 48°F | Cool and cloudy |
5-Dec | 68°F | 48°F | Cloudy skies |
6-Dec | 68°F | 48°F | Mostly cloudy |
7-Dec | 68°F | 48°F | Cool with clouds |
8-Dec | 68°F | 48°F | Overcast conditions |
9-Dec | 68°F | 48°F | Calm winter weather |
10-Dec | 68°F | 46°F | Overcast and cool |
11-Dec | 68°F | 46°F | Chilly and cloudy |
12-Dec | 68°F | 46°F | Mild with possible drizzle |
13-Dec | 66°F | 46°F | Mostly cloudy |
14-Dec | 66°F | 46°F | Cool and calm |
15-Dec | 66°F | 46°F | Stable winter weather |
16-Dec | 66°F | 46°F | Mostly cloudy |
17-Dec | 66°F | 46°F | Overcast and cool |
18-Dec | 66°F | 46°F | Cloudy skies |
19-Dec | 66°F | 46°F | Light breeze, cloudy |
20-Dec | 66°F | 46°F | Cool and dry |
21-Dec | 66°F | 46°F | Crisp winter day |
22-Dec | 66°F | 45°F | Mostly cloudy |
23-Dec | 64°F | 45°F | Chilly but dry |
24-Dec | 64°F | 45°F | Overcast conditions |
25-Dec | 64°F | 45°F | Mild and dry |
26-Dec | 64°F | 45°F | Mild and overcast |
27-Dec | 64°F | 45°F | Slight breeze |
28-Dec | 64°F | 45°F | Calm and cloudy |
29-Dec | 64°F | 45°F | Seasonal temperatures |
30-Dec | 64°F | 45°F | Cool and consistent |
31-Dec | 64°F | 45°F | End-of-year chill |
Forecast based on historical data from Weather.com and NOAA.
What This Weather Means for Your Home Cooling Needs
Missouri City weather in December may not demand full-time air conditioning, but your HVAC system still plays a vital role in keeping your home comfortable. With mild highs ranging from 64°F to 70°F and lows dipping to the mid-40s, your system needs to seamlessly switch between heating and cooling, especially during chilly mornings and warmer afternoons.
HVAC Efficiency Becomes Crucial
The consistent cloud cover and lack of strong sun exposure can make indoor spaces feel cooler than the thermometer suggests. If your home tends to feel drafty or unevenly heated, it’s likely time to schedule a professional HVAC inspection. Ensuring your system runs efficiently can help prevent overuse and save on energy bills during the fluctuating December weather.
Switching Between Heating and Cooling
In December, it’s common for Missouri City homeowners to use heating in the morning and possibly cooling during sunny midday hours. This frequent switching can strain older HVAC systems or improperly programmed thermostats. Installing or updating a smart thermostat helps automate indoor temperatures for maximum comfort and efficiency.
Indoor Air Quality Matters
With windows closed most of the time, indoor air can become stagnant, especially in homes with pets or high indoor activity. Low outdoor humidity may still translate to indoor dryness, which can irritate sinuses and skin. Consider adding air purification or humidity control solutions to your HVAC system.
Don’t Ignore the Cooling System
Even though December focuses more on heating, your AC still plays a role in regulating indoor humidity. Dust can build up in inactive systems, so it’s smart to schedule an AC maintenance check to prepare for unexpected warm spells and to avoid early issues when spring returns.
HVAC Services You’ll Likely Need in Missouri City This December
As Missouri City weather in December brings a mix of mild afternoons and chilly nights, your HVAC system must perform efficiently across a range of temperatures. This is the perfect time to ensure your system is ready for increased heating needs, as well as those occasional warm days when cooling might still be necessary. 75 Degree AC provides a full suite of professional HVAC services to keep your home comfortable all month long.

75 Degree AC
AC Tune-Up and Maintenance
Even if you’re using your AC less, don’t neglect maintenance. A winter AC tune-up ensures your system is clean, efficient, and ready for spring. It also helps prevent dust buildup and improves indoor air circulation — vital during months when windows remain shut.
Heater and Furnace Repair
When temperatures dip into the mid-40s at night, your furnace becomes essential. If you’re experiencing uneven heating, strange noises, or rising energy bills, schedule a heating or furnace repair before it becomes a larger issue.
Thermostat Services
Switching between heating and cooling throughout the day requires a smart and responsive thermostat. 75 Degree AC can install or calibrate your thermostat to manage temperature shifts seamlessly, improving comfort and saving on energy costs.
Indoor Air Quality Services
Closed windows mean less ventilation. Combat stale air, allergens, and dryness with indoor air quality solutions like air purification, humidity control, and duct cleaning. These services are especially important for families with allergies, pets, or elderly residents.
Air Duct and Ventilation Services
Old or clogged ductwork can reduce HVAC efficiency by up to 30%. December is a great time to schedule duct inspection and cleaning, especially before the holiday season when indoor gatherings increase.
Stay Comfortable All December Long with 75 Degree AC
With Missouri City weather in December bringing cool, cloudy days, now’s the perfect time to make sure your home stays warm and cozy. Whether you need a quick heating tune-up, better indoor air quality, or just peace of mind before the holidays — 75 Degree AC is here for you.
Our local team understands the unique weather patterns of Missouri winters and is ready to help you stay ahead of the chill.
👉 Let’s get your HVAC system winter-ready — book your service today and enjoy a worry-free, comfortable December.