Climate averages 1991–2020

Greensboro weather
in September.

A warm, wet month: the 4th warmest and the 11th driest of the year.

Long-term climate patterns, not a forecast for a particular trip.

Average high 26.2°C Daytime mean, September

Average low 17.1°C Night-time mean, September

Rainfall 105 mm 10 days with ≥1 mm

Daylight 12 h Sunrise to sunset, per day

September is a warm month in Greensboro: daytime highs average 26.2°C and nights cool to about 17.1°C. By daytime temperature it is the 4th warmest of the 12 months.

Expect about 105 mm of rain on roughly 10 days, which makes September a wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 27 min on an average September day.

The nearest other city in this atlas is High Point (23 km away). In September its highs average 26.3°C, about as warm as Greensboro, with 105 mm of rain.

Among the 498 cities listed in the United States, Greensboro ranks joint 268th of 498 for the warmest September highs and joint 414th of 498 for the driest September (rainfall, lowest first). The mean September high of those 498 cities is 26.9°C; Greensboro is 0.7°C cooler than that mean.

From September to October, average highs fall by 5.6°C to 20.7°C, and monthly rainfall falls from 105 mm to 80 mm.

The annual picture

September in context

30-year average

Average highAverage low°C

Monthly rainfall

Average total · mm

Averages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated

Every month, side by side

Greensboro climate table

1991–2020

Monthly climate averages for Greensboro, 1991–2020
Month	Average highHigh / low	Average low	Rainfall mm/month	Rain days ≥1 mm/day	Daylight hours/dayDaylight h/day
January	8.5°C-0.6°C	-0.6°C	93	9.3	10.010 h
February	10.7°C0.6°C	0.6°C	81	8.8	10.811 h
March	14.9°C4.0°C	4.0°C	108	10.2	11.912 h
April	20.4°C9.0°C	9.0°C	89	9.3	13.113 h
May	24.9°C14.1°C	14.1°C	88	11.2	14.114 h
June	28.9°C18.8°C	18.8°C	98	13.0	14.615 h
July	30.9°C21.2°C	21.2°C	101	14.6	14.414 h
August	29.7°C20.4°C	20.4°C	97	11.9	13.514 h
September, selected	26.2°C17.1°C	17.1°C	105	9.7	12.412 h
October	20.7°C10.8°C	10.8°C	80	7.3	11.311 h
November	14.6°C4.8°C	4.8°C	83	7.7	10.310 h
December	10.1°C1.3°C	1.3°C	91	9.0	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

Distance from Greensboro

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 limits

How these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Greensboro) is explained once on the Greensboro year overview and on the Sources, method and limits page.