Buffalo Weather in September
September in Buffalo brings high temperatures, with daytime highs of 22°C (72°F) and nights around 13°C (55°F). Quite a bit of rainfall is expected, around 99 mm (3.9 in), so pack an umbrella.
Rainfall in Buffalo in September
Typically, about 11 days will experience rainfall, with an average of 99 mm (3.9 in) for the month. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.
Temperature in Buffalo in September
September tends to be one of the perfect months in Buffalo, with 22°C (72°F) in the afternoon and 13°C (55°F) overnight. This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. At 13°C (55°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.
Sunshine in Buffalo in September
The days are predominantly sunny, with an estimated total of around 206 hours of sunshine. These sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.If you're a fan of comfortable temperatures and drier conditions, September is a great time to visit.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Buffalo's climate page.
Buffalo Temperature in September
Min Temperature
13°C (55°F)
Max Temperature
22°C (72°F)
Chance of Rain
37%
Precipitation
99 mm (3.9 in)
Rainy days
11 days
Humidity
74%
Sunshine
206 hours
Percentage Sunshine
55%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Buffalo typically drop from around 25°C (77°F) at the start of September to approximately 19°C (66°F) by the end. Nights are cool, with lows typically ranging from 10°C (50°F) to 15°C (59°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Buffalo in September
Browse day-by-day weather records for Buffalo spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Buffalo historical weather extremes in September
The extremes listed below come from historical weather data collected in Buffalo from 1976 through 2025.
- Buffalo recorded its highest September temperature of 33°C (91°F) on September 6, 2007.
- Buffalo experienced its chilliest September day on September 30, 1993, reaching only 10°C (50°F).
- Nighttime temperatures dropped to 1°C (34°F) on September 30, 1991, marking the coldest September night on record.
Best Places in the United States of America in September
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in September →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Buffalo in September
Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Buffalo in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Buffalo's climate page.
Temperature Rainfall Sunshine Humidity
See the full Buffalo climate overview or explore weather in the United States of America.
