Climate averages 1991–2020
Corpus Christi weather
in September.
A hot, wet month: the 4th warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Corpus Christi: daytime highs average 30.7°C and nights cool to about 23.8°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 113 mm of rain on roughly 14 days, which makes September a wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 12 h 21 min on an average September day.
The nearest other city in this atlas is Edinburg (183 km away). In September its highs average 32.6°C, 1.9°C warmer than Corpus Christi, with 88 mm of rain.
Among the 498 cities listed in the United States, Corpus Christi ranks joint 75th of 498 for the warmest September highs and joint 433rd of 498 for the driest September (rainfall, lowest first). The mean September high of those 498 cities is 26.9°C; Corpus Christi is 3.8°C warmer than that mean.
From September to October, average highs fall by 3.0°C to 27.7°C, and monthly rainfall falls from 113 mm to 82 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
Corpus Christi climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 18.9°C10.6°C | 10.6°C | 48 | 6.9 | 10.611 h |
| February | 20.8°C12.5°C | 12.5°C | 38 | 6.2 | 11.211 h |
| March | 23.4°C15.5°C | 15.5°C | 59 | 6.8 | 12.012 h |
| April | 26.5°C18.8°C | 18.8°C | 52 | 7.0 | 12.813 h |
| May | 29.4°C22.5°C | 22.5°C | 71 | 9.0 | 13.514 h |
| June | 31.6°C25.0°C | 25.0°C | 73 | 9.5 | 13.914 h |
| July | 32.4°C25.7°C | 25.7°C | 58 | 7.8 | 13.714 h |
| August | 33.1°C25.8°C | 25.8°C | 59 | 9.1 | 13.113 h |
| September, selected | 30.7°C23.8°C | 23.8°C | 113 | 13.5 | 12.312 h |
| October | 27.7°C20.0°C | 20.0°C | 82 | 9.3 | 11.512 h |
| November | 23.1°C15.3°C | 15.3°C | 53 | 7.0 | 10.811 h |
| December | 19.8°C11.7°C | 11.7°C | 51 | 7.2 | 10.410 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
- Edinburg in SeptemberUnited States · 183 kmHigh 32.6°C · Low 23.8°C · 88 mm rain
- McAllen in SeptemberUnited States · 196 kmHigh 32.5°C · Low 23.8°C · 88 mm rain
- Mission in SeptemberUnited States · 199 kmHigh 32.7°C · Low 23.8°C · 88 mm rain
- San Antonio in SeptemberUnited States · 210 kmHigh 31.6°C · Low 22.0°C · 77 mm rain
- Reynosa in SeptemberMexico · 211 kmHigh 32.7°C · Low 23.9°C · 89 mm rain
- Nuevo Laredo in SeptemberMexico · 212 kmHigh 33.2°C · Low 23.7°C · 77 mm rain
- Ciudad Río Bravo in SeptemberMexico · 213 kmHigh 32.4°C · Low 23.9°C · 94 mm rain
- Heroica Matamoros in SeptemberMexico · 214 kmHigh 30.6°C · Low 24.5°C · 108 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 Corpus Christi) is explained once on the Corpus Christi year overview and on the Sources, method and limits page.