Tomorrow’s Weather Forecast for January 21, 2026 in Houston

Tomorrow’s weather forecast for Houston calls for a cooler, wetter day as a thick blanket of clouds and steady showers move across the region. Many residents will notice a shift toward typical winter moisture, even if temperatures remain mild by national standards. This change brings morning chill, afternoon rain, and a damp evening that may affect travel and outdoor plans.

Cool Temperatures and Widespread Clouds

Temperatures stay on the cooler side throughout Wednesday. Morning readings start near 55°F, and the afternoon high reaches only about 73°F. Because cloud cover hovers near 100%, the city will not warm much through the day. Evening temperatures fall back into the mid-60s, and the night settles near 63°F.

Although these numbers remain comfortable, the lack of sun and frequent rainfall may make the day feel cooler. Those heading out early should plan for damp air and reduced visibility on highways.

Moderate Rain Expected Throughout the Day

Moderate rain remains the main story. Forecast models point to about 0.12 inches of rainfall, with showers developing by midmorning and continuing through early evening. Some areas may see intermittent heavier bursts, but extended flooding is not expected at this time.

Because roads will remain wet for much of the day, commuters should leave extra time for both the morning and evening drive. Rain reduces traction and increases braking distances, especially on older pavement common around the metro area.

Light Winds and Low Threat of Severe Weather

Winds stay relatively calm, coming from the southeast at about 9 mph. Gusts could reach 25 mph during scattered heavier showers. While breezy moments will occur, no severe weather alerts are active for the region. Thunderstorms are unlikely, and the cloud deck should hold steady through Wednesday night.

Air Quality and Additional Weather Notes

Air quality remains good. Rain often helps clear airborne particles, and that trend continues tomorrow. Residents with respiratory conditions should feel comfortable outdoors, although carrying an umbrella remains wise.

There are no tropical threats, coastal advisories, or heat-related concerns. The Gulf remains quiet, and winter patterns dominate the week.

What Houston Residents Should Keep in Mind

• Bring rain gear for work and school commutes.
• Expect slower traffic due to slick roads and limited visibility.
• Outdoor events may experience cancellations or delays.
• Temperatures remain mild, but the cloud cover creates a damp chill.

Looking Ahead

The region may warm slightly later in the week as showers ease. A drier pattern builds by the weekend, offering clearer skies and more comfortable outdoor conditions. Until then, tomorrow keeps the area locked in a cool, gray, and rainy setup.

For ongoing updates, visit Houston Weather on Houston.com throughout the day.