Climate averages 1991–2020
Largo weather
in September.
A hot, wet month: the 3rd warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Largo: daytime highs average 28.7°C and nights cool to about 25.1°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 134 mm of rain on roughly 15 days, which makes September a wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 21 min on an average September day.
The nearest other city in this atlas is Clearwater (6 km away). In September its highs average 28.7°C, about as warm as Largo, with 134 mm of rain.
Among the 498 cities listed in the United States, Largo ranks joint 184th of 498 for the warmest September highs and joint 464th of 498 for the driest September (rainfall, lowest first). The mean September high of those 498 cities is 26.9°C; Largo is 1.8°C warmer than that mean.
From September to October, average highs fall by 2.4°C to 26.3°C, and monthly rainfall falls from 134 mm to 59 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
Largo climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 18.3°C13.7°C | 13.7°C | 66 | 6.6 | 10.611 h |
| February | 18.9°C14.6°C | 14.6°C | 55 | 6.1 | 11.211 h |
| March | 20.8°C16.6°C | 16.6°C | 61 | 6.2 | 12.012 h |
| April | 23.7°C19.6°C | 19.6°C | 46 | 5.4 | 12.813 h |
| May | 26.7°C22.6°C | 22.6°C | 53 | 6.3 | 13.514 h |
| June | 28.6°C25.1°C | 25.1°C | 128 | 15.2 | 13.914 h |
| July | 29.2°C26.0°C | 26.0°C | 133 | 18.5 | 13.714 h |
| August | 29.3°C26.1°C | 26.1°C | 146 | 19.5 | 13.113 h |
| September, selected | 28.7°C25.1°C | 25.1°C | 134 | 15.3 | 12.312 h |
| October | 26.3°C22.3°C | 22.3°C | 59 | 6.9 | 11.512 h |
| November | 22.6°C18.3°C | 18.3°C | 38 | 4.3 | 10.811 h |
| December | 20.0°C15.6°C | 15.6°C | 56 | 5.9 | 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
- Clearwater in SeptemberUnited States · 6 kmHigh 28.7°C · Low 25.0°C · 134 mm rain
- St. Petersburg in SeptemberUnited States · 19 kmHigh 29.2°C · Low 24.7°C · 139 mm rain
- Town 'n' Country in SeptemberUnited States · 24 kmHigh 29.6°C · Low 24.1°C · 137 mm rain
- Tampa in SeptemberUnited States · 33 kmHigh 30.0°C · Low 23.4°C · 137 mm rain
- Brandon in SeptemberUnited States · 49 kmHigh 30.3°C · Low 23.3°C · 120 mm rain
- Spring Hill in SeptemberUnited States · 68 kmHigh 30.1°C · Low 23.0°C · 144 mm rain
- Lakeland in SeptemberUnited States · 84 kmHigh 30.0°C · Low 22.9°C · 130 mm rain
- Orlando in SeptemberUnited States · 155 kmHigh 29.8°C · Low 23.0°C · 142 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 Largo) is explained once on the Largo year overview and on the Sources, method and limits page.
Clearwater lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.