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Katy (TX) Weather and Climate: A Comprehensive Guide

The temperature in Katy can vary quite a bit throughout the year. Temperatures can be very hot during the warmest months, and mild during the cooler months. It also experiences much rainfall throughout the year. Let's now guide you through the climate details for a complete overview.

Average maximum day and minimum night temperature

Visitors to Katy can expect significant temperature changes throughout the year. Average daytime temperatures reach a very hot 35°C in August. In January, the coolest month of the year, temperatures drop to a moderate 17°C.

At night, you can expect cooler temperatures, with averages dropping to around 5°C during this month. Check out our detailed temperature page for more information.

Temperature ranges by month

Precipitation and rainy days

Katy is known for its substantial rainfall, with annual precipitation reaching 1213 mm. Katy can be quite wet during May, receiving approximately 135 mm of precipitation over 8 rainy days.

In contrast February, experiences much drier conditions, with 51 mm of rainfall, spread across 7 rainy days. For more details, please visit our Katy Precipitation page.

The mean monthly precipitation over the year, including rain, hail and snow

Sunshine over the year

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

Data from: Houston, the United States of America (44 KM, 27 Miles).

Daily hours of sunshine

Data from: Houston, the United States of America (44 KM, 27 Miles).

Forecast for Katy (TX)

Mon   Dec 23
24°C | 11°C
SE 7 m/s
partly cloudy and no rain

partly cloudy and no rain

Tue   Dec 24
24°C | 16°C
S 5 m/s
24 mm
partly cloudy and thunder

partly cloudy and thunder

Wed   Dec 25
19°C | 13°C
NW 3 m/s
8.2 mm
overcast and  chance of slight rain

overcast and chance of slight rain

The best time of year to visit Katy in the United States of America

During the months of March and November you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:
  • Which is the warmest month in Katy?
    August has an average maximum temperature of 35°C and is the warmest month of the year.
  • Which is the coldest month in Katy?
    The coldest month is January with an average maximum temperature of 17°C.
  • Which is the wettest month in Katy?
    May tops the wettest month list with 135 mm of rainfall.
  • Which is the driest month in Katy?
    February is the driest month with 51 mm of precipitation.
  • Which is the sunniest month in Katy?
    July is the sunniest month with an average of 295 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.