Cary weather in September: Cary, North Carolina: normal highs, lows, rain and records for September
Cary in September has a normal high of 80°F and a normal low of 62°F, a daily mean of 71°F, falling from 84°F on the 1st to 76°F by the 30th. The month brings 5.57 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 27°C and low of 16°C, 141 mm of precipitation in September.
- NOAA stationCary
- Station IDUSC00311535
- Location35.72°N 78.79°W
- Elevation390 ft (119 m)
- From the center5 miles
- Population182,659
- Jan 50° 31°
- Feb 54° 33°
- Mar 61° 39°
- Apr 71° 47°
- May 78° 56°
- Jun 85° 65°
- Jul 88° 69°
- Aug 86° 68°
- Sep 80° 62°
- Oct 71° 50°
- Nov 62° 39°
- Dec 53° 34°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Cary in September?
The normal high is 80°F and the normal low 62°F, for a daily mean of 70.9°F. September is 6.0°F cooler than August and 10.5°F warmer than October. September is the 4th warmest month of the year in Cary and the wettest. Across the month the normal high falls 8°F, from 84°F on September 1 to 76°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 69°F and 73°F.
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 84°F | 66°F | – | – |
| September 8 | 82°F | 64°F | – | – |
| September 15 | 81°F | 62°F | – | – |
| September 22 | 79°F | 60°F | – | – |
| September 30 | 76°F | 57°F | – | – |
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 | 84°F | 66°F | – | – | 13 h |
| September 2 | 84°F | 65°F | – | – | 13 h |
| September 3 | 84°F | 65°F | – | – | 12 h 50 min |
| September 4 | 83°F | 65°F | – | – | 12 h 50 min |
| September 5 | 83°F | 65°F | – | – | 12 h 50 min |
| September 6 | 83°F | 64°F | – | – | 12 h 50 min |
| September 7 | 83°F | 64°F | – | – | 12 h 50 min |
| September 8 | 82°F | 64°F | – | – | 12 h 40 min |
| September 9 | 82°F | 64°F | – | – | 12 h 40 min |
| September 10 | 82°F | 63°F | – | – | 12 h 40 min |
| September 11 | 82°F | 63°F | – | – | 12 h 40 min |
| September 12 | 81°F | 63°F | – | – | 12 h 30 min |
| September 13 | 81°F | 63°F | – | – | 12 h 30 min |
| September 14 | 81°F | 62°F | – | – | 12 h 30 min |
| September 15 | 81°F | 62°F | – | – | 12 h 30 min |
| September 16 | 80°F | 62°F | – | – | 12 h 30 min |
| September 17 | 80°F | 61°F | – | – | 12 h 20 min |
| September 18 | 80°F | 61°F | – | – | 12 h 20 min |
| September 19 | 80°F | 61°F | – | – | 12 h 20 min |
| September 20 | 79°F | 60°F | – | – | 12 h 20 min |
| September 21 | 79°F | 60°F | – | – | 12 h 10 min |
| September 22 | 79°F | 60°F | – | – | 12 h 10 min |
| September 23 | 78°F | 59°F | – | – | 12 h 10 min |
| September 24 | 78°F | 59°F | – | – | 12 h 10 min |
| September 25 | 78°F | 59°F | – | – | 12 h 10 min |
| September 26 | 77°F | 58°F | – | – | 12 h |
| September 27 | 77°F | 58°F | – | – | 12 h |
| September 28 | 77°F | 57°F | – | – | 12 h |
| September 29 | 77°F | 57°F | – | – | 12 h |
| September 30 | 76°F | 57°F | – | – | 11 h 50 min |
- Normal high
- 80°FSeptember average
- Normal low
- 62°FSeptember average
- Precipitation
- 5.57 inmonth total
- Days at 90°F or more
- 2
- Daylight
- 13 h to 11 h 50 minSeptember 1 to September 30
- Days at 70°F or more
- 28
- Days at 80°F or more
- 17
- Sunshine
- 78%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00311535; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Cary in September?
In a normal September in Cary, 2 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00311535.
What are the records for September in Cary?
The September mean against the 1991-2020 normal of 70.9°F: 2021 70.9°F (at normal), 2022 70.9°F (at normal), 2023 69.9°F (−1.0), 2024 70.3°F (−0.7), 2025 69.8°F (−1.1), 2026 74.5°F (+3.6). 1 of 6 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 70.9°F | at normal | 3.13 in |
| 2022 | 70.9°F | at normal | 2.04 in |
| 2023 | 69.9°F | −1.0°F | 4.65 in |
| 2024 | 70.3°F | −0.7°F | 11.24 in |
| 2025 | 69.8°F | −1.1°F | 1.83 in |
| 2026 | 74.5°F | +3.6°F | 0.88 in |
Source: recent months: ACIS, station USC00311535. Records and recent months use complete months only.
How does September in Cary compare across North Carolina?
Across the 131 places PlainClimate covers in North Carolina, September normal highs run from 63°F in Beech Mountain to 87°F in Southport; Cary's is 80°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.