Yosemite National Park is definitely worth a visit
Vast forests, blue lakes, towering sequoias, and majestic waterfalls hint at the beauty of Yosemite National Park—a true natural masterpiece.
Katy Weather in September
September in Katy brings very high temperatures, with daytime highs of 32°C (90°F) and nights around 21°C (70°F). Quite a bit of rainfall is expected, around 115 mm (4.5 in), so pack an umbrella.
Rainfall in Katy in September
Historically, September sees about 10 days of rain, with a monthly average of 115 mm (4.5 in). Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.
Temperature in Katy in September
September in Katy brings very high temperatures, with highs of 32°C (90°F) and nights around 21°C (70°F). The hottest part of the day is usually in the afternoon, so lighter clothing can help you stay comfortable. At 21°C (70°F) overnight, nights are warm enough to sit outside comfortably in light clothing.
Sunshine in Katy in September
With approximately 235 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.For Katy itself, March and November generally stand out with the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Katy Temperature in September
Min Temperature
21°C (70°F)
Max Temperature
32°C (90°F)
Chance of Rain
34%
Precipitation
115 mm (4.5 in)
Rainy days
10 days
Humidity
77% *
Sunshine
235 hours *
Percentage Sunshine
64% *
* Data from: Houston, the United States of America (44 KM, 27 Miles).
Katy Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Katy - and find the best time to visit.
Best Places in the United States of America in September
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in September →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Katy in September
Warm but pleasant conditions in Katy in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Expect heavy rainfall, so bring good rain protection and waterproof bags. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.
What To Do in Katy in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming9/10 -
Cycling7/10 -
Walking7/10 -
Camping6/10 -
Outdoor sports7/10
Katy 3-Day Forecast
More climate data for Katy
Temperature Rainfall Sunshine Humidity
See the full Katy climate overview or explore weather in the United States of America.
Popular in September
Where to go in September - average daytime high across popular destinations.
Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
Yosemite National Park is definitely worth a visit
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