The temperatures in Amarillo in September are comfortable with low of 17°C and and high up to 29°C.
You can expect about 3 to 8 days of rain in Amarillo during the month of September. 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 Amarillo in September 2025.
If you’re planning to visit Amarillo in the near future, we highly recommend that you review the 14 day weather forecast for Amarillo before you arrive.
Temperatures
29° / 17°
Rainy Days
5
Snowy Days
0
Dry Days
25
Rainfall
87
mm
Sun Hours
11.3
Hrs
