Sandy Springs, GA weather in September
Expect warm, often humid weather with some rain in Sandy Springs in September, with highs near 83°F and lows near 63°F. Rain falls on about 8 days.
- Normal high
- 83°F
- Normal low
- 63°F
- Wet days
- 8
- 4.1 in total
- Muggy days
- 12
- dew point 65°F+
How September changes from start to finish
| September 1 | September 30 | |
|---|---|---|
| Normal high | 86°F | 79°F |
| Normal low | 67°F | 58°F |
| Chance of a wet day | 31% | 29% |
| Sunrise / sunset | 7:11 am / 8:03 pm | 7:31 am / 7:23 pm |
| Daylight | 12.9 h | 11.9 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Eastern Time).
A typical September day
- 6 am65°Fdew point 62°F
- 9 am72°Fdew point 63°F
- Noon79°Fdew point 62°F
- 3 pm82°Fdew point 61°F
- 6 pm80°Fdew point 62°F
- 9 pm71°Fdew point 64°F
NOAA hourly normals (local standard time) from Atlanta Fulton Co Airport (13 mi away); average wind 4 mph.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F4 of 30
- Hot dayshigh 90°F or more6 of 30
- Muggy daysdaily mean dew point 65°F or more12 of 30
- Wet daysat least 0.01 in of rain or melted snow8 of 30
- Notable rainat least 0.10 in5 of 30
- Freezing nightslow 32°F or below0 of 30
Average days per September, counted from daily records for each year 1991-2020.
Rain in September
Normal precipitation is 4.1 in; a dry September brings about 2.5 in and a wet one about 4.6 in (25th and 75th percentiles). About 2 days bring half an inch or more, and about 1 an inch or more.
How September varies from year to year
- Warmest September, 1991-20202019: average high 91°F
- Coolest September2004: average high 79°F
- Wettest September2009: 15.9 in
- Driest September2005: 0.3 in
- Highest reading98°F (September 9, 2019)
- Lowest reading43°F (September 27, 2001)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
September compared with August and October
| August | September | October | |
|---|---|---|---|
| Normal high | 88°F | 83°F | 73°F |
| Normal low | 69°F | 63°F | 51°F |
| Wet days | 11 | 8 | 9 |
| Comfortable days | – | 4 | 16 |
| Daylight | 13.4 h | 12.4 h | 11.3 h |
Highs change by -5°F from August and -10°F into October.
Nearby alternatives in September
- Warmer: Montgomery, AL155 mi · high 89°F · 7 wet days
- Cooler: Gatlinburg, TN133 mi · high 78°F · 11 wet days
How Sandy Springs ranks in September
- Normal high168th warmest of 378 cities; 8th of 8 in Georgia
- Wet days195th driest of 378
- Comfortable days219th most of 342
What to pack for Sandy Springs in September
- A rain jacket or umbrella – rain on about 8 days
Heating and cooling
September has 10 heating degree days and 245 cooling degree days (base 65°F), 5% of the year's total heating and cooling demand.
Questions
How hot is Sandy Springs in September?
The normal high is 83°F and the normal low is 63°F. From 1991 to 2020 the hottest September reading was 98°F (September 9, 2019).
Does it rain a lot in Sandy Springs in September?
About 8 days in September have at least 0.01 in of precipitation, and the normal total is 4.1 in. The wettest September in 1991-2020 was in 2009 (15.9 in); the driest was in 2005 (0.3 in).
Where the numbers come from
- Temperature, rain and frost dates: Atlanta Peachtree Airport (USW00053863), 5.5 mi SE of the city center, 1,002 ft (90 ft lower than the city). NOAA normals and daily records, 1991-2020.
- Snowfall: Atlanta 9NW (USC00090444), 9.6 mi SW of the city center, 907 ft (185 ft lower than the city). NOAA normals and daily records, 1991-2020.
- Snow depth: Atlanta Hartsfield Intl Airport (USW00013874), 21 mi S of the city center, 1,010 ft (82 ft lower than the city). NOAA normals and daily records, 1991-2020.
- Humidity and wind by hour: Atlanta Fulton Co Airport (USW00003888), 13 mi SW of the city center, 840 ft (252 ft lower than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Dobbins Air Reserve Base Airport (722270-13864), 8.0 mi W of the city center, 1,068 ft . Hourly observations, 1991-2020.
- Not available for this location: cloud cover (no station close enough or similar enough in elevation).