Climate averages 1991–2020
Syracuse weather
in September.
A mild, wet month: the 4th warmest and the 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a mild month in Syracuse: daytime highs average 21.8°C and nights cool to about 13.8°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 99 mm of rain on roughly 11 days, which makes September a wet month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 33 min on an average September day.
The nearest other city in this atlas is Rochester (New York), United States (120 km away). In September its highs average 21.6°C, about as warm as Syracuse, with 88 mm of rain.
Among the 498 cities listed in the United States, Syracuse ranks joint 465th of 498 for the warmest September highs and joint 387th of 498 for the driest September (rainfall, lowest first). The mean September high of those 498 cities is 26.9°C; Syracuse is 5.1°C cooler than that mean.
From September to October, average highs fall by 6.8°C to 15.0°C, and monthly rainfall rises from 99 mm to 114 mm.
The annual picture
September in context
Monthly precipitation
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
Syracuse climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -0.4°C-8.0°C | -8.0°C | 83 | 14.1 | 9.49 h |
| February | 0.7°C-8.0°C | -8.0°C | 73 | 12.2 | 10.510 h |
| March | 5.4°C-3.7°C | -3.7°C | 94 | 13.3 | 11.912 h |
| April | 12.7°C3.0°C | 3.0°C | 107 | 13.8 | 13.413 h |
| May | 19.4°C9.8°C | 9.8°C | 100 | 13.3 | 14.615 h |
| June | 23.9°C15.2°C | 15.2°C | 115 | 13.3 | 15.315 h |
| July | 26.3°C18.1°C | 18.1°C | 111 | 13.1 | 15.015 h |
| August | 25.4°C17.5°C | 17.5°C | 100 | 12.5 | 13.914 h |
| September, selected | 21.8°C13.8°C | 13.8°C | 99 | 10.7 | 12.513 h |
| October | 15.0°C8.0°C | 8.0°C | 114 | 13.3 | 11.111 h |
| November | 8.3°C1.8°C | 1.8°C | 93 | 13.9 | 9.810 h |
| December | 2.5°C-3.7°C | -3.7°C | 96 | 14.8 | 9.19 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet 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
- Rochester (New York), United States in SeptemberUnited States · 120 kmHigh 21.6°C · Low 14.3°C · 88 mm rain
- Kingston, Canada in SeptemberCanada · 134 kmHigh 20.2°C · Low 14.8°C · 95 mm rain
- Scranton in SeptemberUnited States · 187 kmHigh 22.6°C · Low 13.6°C · 95 mm rain
- Albany (New York), United States in SeptemberUnited States · 200 kmHigh 22.4°C · Low 12.9°C · 100 mm rain
- Cheektowaga in SeptemberUnited States · 213 kmHigh 21.4°C · Low 14.0°C · 81 mm rain
- Amherst in SeptemberUnited States · 216 kmHigh 21.5°C · Low 14.2°C · 81 mm rain
- Buffalo in SeptemberUnited States · 223 kmHigh 21.1°C · Low 14.6°C · 85 mm rain
- Peterborough, Canada in SeptemberCanada · 223 kmHigh 20.7°C · Low 12.6°C · 85 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 Syracuse) is explained once on the Syracuse year overview and on the Sources, method and limits page.