Click on a day for an hourly weather forecast
The temperatures in Katy in October are comfortable with low of 18°C and and high up to 28°C.
You can expect about 3 to 8 days of rain in Katy during the month of October. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Katy in October 2026.
If you’re planning to visit Katy in the near future, we highly recommend that you review the 14 day weather forecast for Katy before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 16° / 8° | 5 | 25 | 0 | 78 mm | Good | Katy in January |
| February | 18° / 9° | 6 | 23 | 0 | 82 mm | Good | Katy in February |
| March | 22° / 13° | 5 | 26 | 0 | 89 mm | Good | Katy in March |
| April | 26° / 16° | 5 | 25 | 0 | 95 mm | Perfect | Katy in April |
| May | 30° / 20° | 8 | 23 | 0 | 172 mm | Ok | Katy in May |
| June | 33° / 23° | 10 | 20 | 0 | 166 mm | Ok | Katy in June |
| July | 34° / 24° | 10 | 21 | 0 | 152 mm | Bad | Katy in July |
| August | 35° / 25° | 9 | 22 | 0 | 184 mm | Bad | Katy in August |
| September | 32° / 23° | 10 | 20 | 0 | 203 mm | Ok | Katy in September |
| October | 28° / 18° | 6 | 25 | 0 | 129 mm | Perfect | Katy in October |
| November | 21° / 13° | 5 | 25 | 0 | 93 mm | Good | Katy in November |
| December | 18° / 10° | 6 | 25 | 0 | 100 mm | Good | Katy in December |