Katy (TX) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Katy.
Climate overview of Katy
Katy, Texas, United States of America, sees big temperature differences between seasons, with August peaking at 35°C (95°F) and January dropping to 17°C (63°F).
With around 1213 mm (48 in) of annual rainfall, Katy has a notably wet climate. The wettest month is May. The most sunshine falls in July, with an average of 9.8 hours of daily sunshine.
Katy Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Katy — and find the best time to visit.
Monthly Temperature in Katy
Visitors to Katy can expect significant temperature changes throughout the year. Average daytime temperatures reach a very hot 35°C (95°F) in August. In January, the coolest month of the year, temperatures drop to a moderate 17°C (63°F).
At night, temperatures range from around 24°C (75°F) in August to 5°C (41°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Katy
Katy is known for its substantial rainfall, with annual precipitation reaching 1213 mm (48 in). Katy can be quite wet during May, receiving approximately 135 mm (5.3 in) of precipitation over 8 rainy days.
In contrast, during the driest month (February), you will experience much drier conditions, with 51 mm (2 in) of precipitation spread across 7 rainy days days. For more details, please visit our Katy Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Katy
Katy can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 9.8 hours of sunshine daily. In contrast, the city experiences much darker days in January, with only 4.7 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Katy by Month
The relative humidity is high throughout the year in Katy.
The city experiences its highest humidity in September, reaching 77%. In March, the humidity drops to its lowest level at 73%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Katy
The weather does bring rainfall during this period, between 51 mm (2 in) and 135 mm (5.3 in). Planning your next adventure but unsure where to go? Our climate tool suggests perfect locations tailored to your preferred weather conditions. Discover your ideal travel destination with our weather planner.
Frequently asked questions about the climate in Katy
What is the best time to visit Katy?
March and November typically offer the most optimal weather in Katy. In contrast, June, July and August tend to have less optimal conditions.
What temperatures can I expect in Katy?
Daytime highs range from 17°C (63°F) in January to 35°C (95°F) in August. Nighttime lows range from 5°C (41°F) to 24°C (75°F). Temperatures vary considerably through the year.
How much rain does Katy get?
Annual rainfall is around 1213 mm (48 in). May is the wettest month with 135 mm (5.3 in), while February is the driest with 51 mm (2 in).
How sunny is Katy?
Katy receives around 2,584 hours of sunshine per year. July is the sunniest month with 295 hours, while January is the cloudiest with just 142 hours. Overall, Katy enjoys abundant sunshine.
Katy 3-Day Forecast
Katy (TX) 3-Day Forecast
Katy on the map
Katy is highlighted — select any city to see its climate.
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