Climate averages 1991–2020
Gainesville weather
in September.
A hot, wet month: the 5th warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Gainesville: daytime highs average 29.9°C and nights cool to about 22.2°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 107 mm of rain on roughly 15 days, which makes September a wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 22 min on an average September day.
The nearest other city in this atlas is Jacksonville (99 km away). In September its highs average 29.0°C, 1.0°C cooler than Gainesville, with 121 mm of rain.
Among the 498 cities listed in the United States, Gainesville ranks joint 133rd of 498 for the warmest September highs and joint 418th of 498 for the driest September (rainfall, lowest first). The mean September high of those 498 cities is 26.9°C; Gainesville is 3.0°C warmer than that mean.
From September to October, average highs fall by 3.1°C to 26.9°C, and monthly rainfall falls from 107 mm to 57 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
Gainesville climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 18.6°C8.8°C | 8.8°C | 74 | 7.7 | 10.510 h |
| February | 20.4°C10.3°C | 10.3°C | 64 | 6.9 | 11.111 h |
| March | 23.3°C12.5°C | 12.5°C | 80 | 7.4 | 12.012 h |
| April | 26.7°C15.6°C | 15.6°C | 57 | 6.6 | 12.913 h |
| May | 30.1°C19.1°C | 19.1°C | 70 | 8.9 | 13.614 h |
| June | 31.3°C22.4°C | 22.4°C | 135 | 18.6 | 14.014 h |
| July | 31.9°C23.5°C | 23.5°C | 136 | 20.5 | 13.814 h |
| August | 31.3°C23.5°C | 23.5°C | 147 | 21.3 | 13.213 h |
| September, selected | 29.9°C22.2°C | 22.2°C | 107 | 14.6 | 12.412 h |
| October | 26.9°C18.3°C | 18.3°C | 57 | 7.7 | 11.511 h |
| November | 22.9°C13.5°C | 13.5°C | 40 | 5.3 | 10.711 h |
| December | 20.0°C10.5°C | 10.5°C | 60 | 6.6 | 10.310 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
- Jacksonville in SeptemberUnited States · 99 kmHigh 29.0°C · Low 22.8°C · 121 mm rain
- Palm Coast in SeptemberUnited States · 108 kmHigh 28.7°C · Low 24.0°C · 137 mm rain
- Spring Hill in SeptemberUnited States · 132 kmHigh 30.1°C · Low 23.0°C · 144 mm rain
- Deltona in SeptemberUnited States · 133 kmHigh 29.8°C · Low 23.1°C · 146 mm rain
- Daytona Beach in SeptemberUnited States · 135 kmHigh 29.3°C · Low 23.7°C · 140 mm rain
- Orlando in SeptemberUnited States · 154 kmHigh 29.8°C · Low 23.0°C · 142 mm rain
- Alafaya in SeptemberUnited States · 162 kmHigh 29.6°C · Low 23.2°C · 143 mm rain
- Lakeland in SeptemberUnited States · 183 kmHigh 30.0°C · Low 22.9°C · 130 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 Gainesville) is explained once on the Gainesville year overview and on the Sources, method and limits page.