McDonough weather in September: McDonough, Georgia: normal highs, lows, rain and records for September
McDonough in September has a normal high of 85°F and a normal low of 62°F, a daily mean of 73°F, falling from 89°F on the 1st to 80°F by the 30th. Measurable precipitation falls on 6 days in a normal September, 3.73 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 30°C and low of 17°C, 95 mm of precipitation in September.
- NOAA stationMcDonough (5 mi ENE)
- Station IDUSC00095666
- Location33.48°N 84.03°W
- Elevation708 ft (216 m)
- Population32,803
- Jan 55° 32°
- Feb 59° 34°
- Mar 67° 40°
- Apr 76° 47°
- May 83° 56°
- Jun 89° 65°
- Jul 92° 69°
- Aug 91° 68°
- Sep 85° 62°
- Oct 75° 50°
- Nov 64° 39°
- Dec 56° 34°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is McDonough in September?
The normal high is 85°F and the normal low 62°F, for a daily mean of 73.4°F. September is 6.3°F cooler than August and 11.3°F warmer than October. September is the 4th warmest month of the year in McDonough and the 9th wettest. Across the month the normal high falls 9°F, from 89°F on September 1 to 80°F on September 30. From one year to the next September's mean temperature typically moves about 2.3°F either way (NOAA's standard deviation), so roughly two Septembers in three average between 71°F and 76°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 24%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 89°F | 66°F | 24% | 18% |
| September 8 | 88°F | 64°F | 22% | 16% |
| September 15 | 86°F | 62°F | 21% | 16% |
| September 22 | 83°F | 60°F | 20% | 16% |
| September 30 | 80°F | 56°F | 20% | 16% |
Every day of September: normal high, low and chance of precipitation (warmest afternoon September 1, coldest night September 30)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| September 1 | 89°F | 66°F | 24% | 18% | 12 h 50 min |
| September 2 | 89°F | 66°F | 24% | 18% | 12 h 50 min |
| September 3 | 89°F | 66°F | 23% | 17% | 12 h 50 min |
| September 4 | 89°F | 65°F | 23% | 17% | 12 h 50 min |
| September 5 | 88°F | 65°F | 23% | 17% | 12 h 50 min |
| September 6 | 88°F | 65°F | 23% | 17% | 12 h 40 min |
| September 7 | 88°F | 65°F | 22% | 16% | 12 h 40 min |
| September 8 | 88°F | 64°F | 22% | 16% | 12 h 40 min |
| September 9 | 87°F | 64°F | 22% | 16% | 12 h 40 min |
| September 10 | 87°F | 64°F | 22% | 16% | 12 h 40 min |
| September 11 | 87°F | 63°F | 22% | 16% | 12 h 30 min |
| September 12 | 87°F | 63°F | 21% | 16% | 12 h 30 min |
| September 13 | 86°F | 63°F | 21% | 16% | 12 h 30 min |
| September 14 | 86°F | 63°F | 21% | 16% | 12 h 30 min |
| September 15 | 86°F | 62°F | 21% | 16% | 12 h 30 min |
| September 16 | 85°F | 62°F | 21% | 16% | 12 h 20 min |
| September 17 | 85°F | 61°F | 21% | 16% | 12 h 20 min |
| September 18 | 85°F | 61°F | 21% | 16% | 12 h 20 min |
| September 19 | 84°F | 61°F | 20% | 16% | 12 h 20 min |
| September 20 | 84°F | 60°F | 20% | 16% | 12 h 20 min |
| September 21 | 84°F | 60°F | 20% | 16% | 12 h 10 min |
| September 22 | 83°F | 60°F | 20% | 16% | 12 h 10 min |
| September 23 | 83°F | 59°F | 20% | 16% | 12 h 10 min |
| September 24 | 83°F | 59°F | 20% | 16% | 12 h 10 min |
| September 25 | 82°F | 58°F | 20% | 16% | 12 h 10 min |
| September 26 | 82°F | 58°F | 20% | 16% | 12 h |
| September 27 | 81°F | 58°F | 20% | 16% | 12 h |
| September 28 | 81°F | 57°F | 20% | 16% | 12 h |
| September 29 | 81°F | 57°F | 20% | 16% | 12 h |
| September 30 | 80°F | 56°F | 20% | 16% | 11 h 50 min |
- Normal high
- 85°FSeptember average
- Normal low
- 62°FSeptember average
- Precipitation
- 3.73 inmonth total
- Days with precipitation
- 60.01 inch or more
- Days at 90°F or more
- 6
- Daylight
- 12 h 50 min to 11 h 50 minSeptember 1 to September 30
- Days at 70°F or more
- 30
- Days at 80°F or more
- 25
- Sunshine
- 79%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00095666; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in McDonough in September?
On a given September day the chance of 0.01 inch or more is 21% on average, highest around September 1 (24%). In all, 3.73 in falls on 6 days of a normal September, 1 of them with an inch or more.
In a normal September in McDonough, 6 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00095666.
How does September in McDonough compare across Georgia?
Across the 101 places PlainClimate covers in Georgia, September normal highs run from 72°F in Mountain City to 90°F in Bainbridge; McDonough's is 85°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.