The weather in Katy, Texas, for Saturday, April 25, 2026, is characterized by mostly cloudy skies and high humidity. As of the early morning hours, the temperature stands at 73°F, though the high moisture content in the air makes the outdoor environment feel significantly warmer. Residents planning outdoor activities should prepare for a warm day with temperatures peaking in the high 80s.

Current Weather Conditions in Katy

As of 8:55 AM UTC, the local atmosphere in Katy is dominated by heavy cloud cover and patchy fog. While the ambient air temperature is a mild 73°F, the humidity level is approximately 94%. This saturation creates a "feels like" temperature or heat index of roughly 81°F. Wind speeds remain low, currently recorded at 3 mph coming from the south-southeast.

Visibility may be limited in certain areas of the Katy plains due to the morning fog. Drivers on I-10 and local thoroughfares like Grand Parkway should exercise caution until the fog dissipates later in the morning.

Today's Temperature and Sky Outlook

The forecast for the remainder of Saturday indicates a steady climb in mercury.

  • Daytime High: Expect temperatures to reach between 87°F and 89°F.
  • Sky Conditions: The early morning cloudiness and fog are expected to transition into partial clearing by the afternoon, allowing for some intervals of sunshine.
  • Wind: Light breezes will persist, generally from the south-southeast at 5 to 10 mph, providing minimal relief from the humidity.

Despite the heavy cloud cover seen earlier in the day, the UV index is expected to be moderate to high during periods of partial clearing. Protection from sun exposure is recommended for those spending extended time outdoors during the afternoon peak.

Precipitation and Storm Chances

For those concerned about rain affecting weekend plans, the probability of precipitation remains low. There is a 10% to 20% chance of rain throughout the day. While widespread thunderstorms are not anticipated, the high humidity levels could trigger a stray, localized shower. Most areas in Katy will likely remain dry, but keeping an eye on local radar is advisable for any sudden atmospheric developments.

Tonight's Forecast for Katy

As the sun sets, the temperature will decrease gradually, settling at a mild overnight low between 72°F and 74°F.

  • Sky Cover: Clouds are expected to return in full force overnight.
  • Fog Potential: Similar to the previous night, patchy fog is likely to develop again after midnight and into early Sunday morning.
  • Humidity: Levels will remain elevated, ensuring a damp and warm night for the region.

What is the typical weather in Katy during April?

April in Katy is traditionally a transition month. While the extreme heat of the Texas summer has not yet arrived, the humidity begins to climb significantly. Average highs usually range from 78°F to 84°F, making the current forecast of nearly 89°F slightly warmer than the historical average. This period also marks the beginning of increased convective activity, though today's low rain chance is a departure from the more volatile spring storm patterns often seen in Southeast Texas.

How does humidity affect the weather in Katy?

In Katy and the surrounding Greater Houston area, humidity is a defining factor of the local climate. High humidity prevents sweat from evaporating efficiently off the skin, which hinders the body's natural cooling process. This is why a 73°F morning can feel like 81°F. When humidity levels reach above 90%, the air feels "heavy," and physical exertion can lead to faster exhaustion.

Summary for April 25 2026

Saturday in Katy will be warm and humid with a high near 89°F. Morning fog and clouds will give way to partial sunshine in the afternoon. With only a 10-20% chance of rain, most outdoor events should proceed without significant weather interruptions, though the high heat index suggests staying hydrated and prepared for humid conditions.

FAQ

Is there a rain warning for Katy today? No official rain or flood warnings are currently in effect for Katy. The chance of precipitation is low at 10-20%.

What should I wear for today's weather in Katy? Lightweight, breathable clothing is recommended due to the high humidity and temperatures nearing 90°F.

Will the fog affect my morning commute? Yes, patchy fog is present this morning and may reduce visibility. It is expected to clear as the temperature rises toward midday.