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Hourly Forecast
Daylight Hours
07:14
Sunrise
19:26
Sunset
Moon
Waxing Crescent
11:43
Moonrise
21:20
Moonset
Daily Forecast
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Weather in Rockwall today, September 15, 2026
Sunshine leads the day in Rockwall on September 15, 2026, with a patch of cloud building near 16:00. The broader outlook stays fair despite that temporary thickening.
Temperatures climb from an overnight low near 27°C toward a daytime high of about 37°C. Expect humidity between 32% and 47%, most humid near 23:00. Airflow remains manageable, reaching about 4.5 km/h around 22:00.
Through the afternoon skies look more workable, with cloud near 16% around 16:00. Later outdoor plans have a clearer window than the morning may have suggested. Views remain open at about 16.1 km. Daylight runs from 07:14 to 19:26, lasting 12 hours 11 minutes of sunlight today.
Overall, Rockwall on September 15, 2026 favours outdoor plans under mostly open skies, with a comfortable high near 37°C.
Frequently asked questions about weather in Rockwall
How warm does it get in Rockwall?
The warmest month in Rockwall is July, with average high temperatures of 35°C. The average temperature during this period is around 30°C.
How cold does it get in Rockwall?
The coldest month in Rockwall is January, with average low temperatures of 3°C. The average temperature during this period is around 8°C.
What is the wettest time of year in Rockwall?
The wettest month in Rockwall is May, with an average of 152mm of precipitation.
What is the driest time of year in Rockwall?
The driest month in Rockwall is July, with an average of 47mm of precipitation.
