Climate averages 1991–2020
Gastonia weather
in September.
A warm, wet month: the 4th warmest and the joint 5th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Gastonia: daytime highs average 26.9°C and nights cool to about 18.0°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 97 mm of rain on roughly 9 days, which makes September a wet month (the joint 5th 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 Charlotte (31 km away). In September its highs average 27.1°C, about as warm as Gastonia, with 98 mm of rain.
Among the 498 cities listed in the United States, Gastonia ranks joint 244th of 498 for the warmest September highs and joint 379th of 498 for the driest September (rainfall, lowest first). The mean September high of those 498 cities is 26.9°C; Gastonia is level with that mean.
From September to October, average highs fall by 5.5°C to 21.4°C, and monthly rainfall falls from 97 mm to 86 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
Gastonia climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 9.6°C0.8°C | 0.8°C | 98 | 9.7 | 10.110 h |
| February | 11.8°C2.1°C | 2.1°C | 88 | 8.5 | 10.911 h |
| March | 15.9°C5.5°C | 5.5°C | 114 | 10.0 | 11.912 h |
| April | 21.1°C10.2°C | 10.2°C | 97 | 8.9 | 13.113 h |
| May | 25.6°C15.2°C | 15.2°C | 79 | 10.8 | 14.014 h |
| June | 29.4°C19.7°C | 19.7°C | 101 | 12.9 | 14.514 h |
| July | 31.3°C21.8°C | 21.8°C | 105 | 15.1 | 14.314 h |
| August | 30.0°C21.1°C | 21.1°C | 102 | 12.5 | 13.513 h |
| September, selected | 26.9°C18.0°C | 18.0°C | 97 | 9.1 | 12.412 h |
| October | 21.4°C11.9°C | 11.9°C | 86 | 6.8 | 11.311 h |
| November | 15.4°C6.1°C | 6.1°C | 89 | 7.8 | 10.310 h |
| December | 11.0°C2.5°C | 2.5°C | 101 | 9.1 | 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
- Charlotte in SeptemberUnited States · 31 kmHigh 27.1°C · Low 17.7°C · 98 mm rain
- Rock Hill in SeptemberUnited States · 40 kmHigh 27.4°C · Low 18.4°C · 93 mm rain
- Concord (North Carolina), United States in SeptemberUnited States · 57 kmHigh 27.2°C · Low 18.1°C · 103 mm rain
- Winston-Salem in SeptemberUnited States · 126 kmHigh 26.4°C · Low 17.0°C · 101 mm rain
- Asheville in SeptemberUnited States · 129 kmHigh 24.2°C · Low 14.8°C · 95 mm rain
- High Point in SeptemberUnited States · 132 kmHigh 26.3°C · Low 17.1°C · 105 mm rain
- Columbia (South Carolina), United States in SeptemberUnited States · 141 kmHigh 28.3°C · Low 19.0°C · 94 mm rain
- Greensboro in SeptemberUnited States · 155 kmHigh 26.2°C · Low 17.1°C · 105 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 Gastonia) is explained once on the Gastonia year overview and on the Sources, method and limits page.