Climate averages 1991–2020
Amarillo weather
in September.
A warm, moderately wet month: the 4th warmest and the 6th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Amarillo: daytime highs average 27.5°C and nights cool to about 16.2°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 40 mm of rain on roughly 6 days, which makes September a moderately wet month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 26 min on an average September day.
The nearest other city in this atlas is Lubbock (183 km away). In September its highs average 28.2°C, 0.7°C warmer than Amarillo, with 52 mm of rain.
Among the 498 cities listed in the United States, Amarillo ranks joint 223rd of 498 for the warmest September highs and 164th of 498 for the driest September (rainfall, lowest first). The mean September high of those 498 cities is 26.9°C; Amarillo is 0.6°C warmer than that mean.
From September to October, average highs fall by 5.6°C to 21.9°C, and monthly rainfall rises from 40 mm to 48 mm.
The annual picture
September in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Amarillo climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 10.2°C-1.9°C | -1.9°C | 20 | 3.3 | 10.110 h |
| February | 12.7°C-0.3°C | -0.3°C | 17 | 3.6 | 10.911 h |
| March | 17.3°C3.9°C | 3.9°C | 38 | 5.1 | 11.912 h |
| April | 21.7°C8.2°C | 8.2°C | 42 | 5.2 | 13.113 h |
| May | 26.2°C13.4°C | 13.4°C | 60 | 7.1 | 14.014 h |
| June | 30.9°C18.6°C | 18.6°C | 53 | 8.6 | 14.514 h |
| July | 32.4°C21.0°C | 21.0°C | 45 | 7.7 | 14.314 h |
| August | 31.4°C20.4°C | 20.4°C | 59 | 8.8 | 13.513 h |
| September, selected | 27.5°C16.2°C | 16.2°C | 40 | 6.3 | 12.412 h |
| October | 21.9°C9.9°C | 9.9°C | 48 | 5.3 | 11.311 h |
| November | 15.4°C3.5°C | 3.5°C | 22 | 3.7 | 10.410 h |
| December | 10.1°C-1.4°C | -1.4°C | 27 | 3.6 | 9.810 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
September in nearby cities
- Lubbock in SeptemberUnited States · 183 kmHigh 28.2°C · Low 17.2°C · 52 mm rain
- Lawton in SeptemberUnited States · 321 kmHigh 29.7°C · Low 19.7°C · 65 mm rain
- Wichita Falls in SeptemberUnited States · 338 kmHigh 30.6°C · Low 20.6°C · 65 mm rain
- Midland in SeptemberUnited States · 359 kmHigh 29.5°C · Low 18.6°C · 46 mm rain
- Abilene in SeptemberUnited States · 364 kmHigh 30.2°C · Low 20.1°C · 58 mm rain
- Santa Fe, United States in SeptemberUnited States · 376 kmHigh 23.2°C · Low 11.1°C · 26 mm rain
- Odessa in SeptemberUnited States · 379 kmHigh 29.6°C · Low 18.5°C · 45 mm rain
- Oklahoma City in SeptemberUnited States · 392 kmHigh 28.5°C · Low 18.9°C · 73 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Amarillo) is explained once on the Amarillo year overview and on the Sources, method and limits page.