Katy (TX) Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in Katy, Texas, United States of America. The numbers reflect climate data gathered over a 30-year period, from 1990 to 2020. Now, let's explore all the details to give you a full picture.

Katy is known for its substantial rainfall, with annual precipitation reaching 1213 mm (48 in).

Monthly Precipitation Levels

The average number of days each month with precipitation (> 0.2 mm (0.01 in))

Katy can be quite wet during May, receiving approximately 135 mm (5.3 in) of precipitation over 8 rainy days.

In contrast February, experiences much drier conditions, with 51 mm (2 in) of rainfall, spread across 7 rainy days.

May, the wettest month, has a maximum daytime temperature of 30°C (86°F). The city receives 250 hours of sunshine in this period. During the driest month February you can expect a temperature of 19°C (66°F). For more detailed insights into the city's temperatures, visit our Katy Temperature page.

Katy's average annual precipitation is 1213 mm (48 in). Let's compare this to some popular worldwide tourist destinations:

Athens, Greece, receives an average annual precipitation of 400 mm (16 in), making it one of the drier Mediterranean climates with rainfall mostly in winter.

In Shanghai, China, the annual average precipitation is 1347 mm (53 in), with a humid subtropical climate.

In Brisbane, Australia, the annual precipitation is 979 mm (39 in), making it wetter than Sydney.

Singapore, situated near the equator, gets 2581 mm (102 in) of rainfall annually, with no distinct dry season and consistent monthly precipitation.

Precipitation amounts are measured using specific gauges installed at weather stations, collecting both rain and snow and any other type of precipitation. Rainfall is measured directly in millimeters, while that from snow and ice is obtained by melting it. Automated systems often incorporate heaters to make this easier.

Information from these stations is transmitted via Wi-Fi, satellite, GPS, or telephone connections to central monitoring networks. This information is immediately updated and integrated into weather models and forecasts.

Climate change is affecting precipitation patterns worldwide, including Katy (TX):

• Changing Rainfall Patterns: Global warming causes drastic changes in the patterns of rainfall. Some areas have been experiencing increased frequency and intensity of rainfall, while other areas experience longer dry spells or even droughts.
• Local Impacts: Many regions are experiencing heavier rainfall in the winter months and drier, hotter summers. This affects agriculture, water resources, and ecosystems.

• Mawsynram in India is noted as being the wettest place on earth, with over 11 meters (36 feet) of rain falling every year.
• In contrast, Antofagasta in Chile is among the driest places on the planet, getting less than 0.1mm (0.004 inches) per year, with some years recording virtually no rainfall.
• Nearly 1,650 thunderstorm cells are estimated over the planet at any given time.

For more detailed information about Katy (TX)'s weather, including sunshine hours, humidity levels, and temperature data, visit our Katy (TX) Climate page.