Rocky Mount weather in September: Rocky Mount, North Carolina: normal highs, lows, rain and records for September
Rocky Mount in September has a normal high of 83°F and a normal low of 62°F, a daily mean of 72°F, falling from 86°F on the 1st to 78°F by the 30th. Measurable precipitation falls on 12 days in a normal September, 4.91 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 28°C and low of 17°C, 125 mm of precipitation in September.
- NOAA stationRocky Mount Wilson Airport
- Station IDUSW00093759
- Location35.85°N 77.89°W
- Elevation160 ft (49 m)
- Population54,541
- Jan 52° 31°
- Feb 55° 33°
- Mar 63° 39°
- Apr 73° 48°
- May 80° 56°
- Jun 87° 65°
- Jul 91° 69°
- Aug 88° 68°
- Sep 83° 62°
- Oct 73° 50°
- Nov 63° 39°
- Dec 55° 34°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Rocky Mount in September?
The normal high is 83°F and the normal low 62°F, for a daily mean of 72.2°F. September is 5.8°F cooler than August and 10.7°F warmer than October. September is the 4th warmest month of the year in Rocky Mount and the 2nd wettest. Across the month the normal high falls 8°F, from 86°F on September 1 to 78°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 70°F and 75°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 40%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 86°F | 66°F | 38% | 19% |
| September 8 | 85°F | 64°F | 39% | 19% |
| September 15 | 83°F | 62°F | 40% | 19% |
| September 22 | 81°F | 60°F | 40% | 19% |
| September 30 | 78°F | 57°F | 40% | 19% |
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 | 86°F | 66°F | 38% | 19% | 13 h |
| September 2 | 86°F | 66°F | 39% | 19% | 13 h |
| September 3 | 86°F | 65°F | 39% | 19% | 12 h 50 min |
| September 4 | 85°F | 65°F | 39% | 19% | 12 h 50 min |
| September 5 | 85°F | 65°F | 39% | 19% | 12 h 50 min |
| September 6 | 85°F | 65°F | 39% | 19% | 12 h 50 min |
| September 7 | 85°F | 64°F | 39% | 19% | 12 h 50 min |
| September 8 | 85°F | 64°F | 39% | 19% | 12 h 40 min |
| September 9 | 84°F | 64°F | 39% | 19% | 12 h 40 min |
| September 10 | 84°F | 64°F | 39% | 19% | 12 h 40 min |
| September 11 | 84°F | 64°F | 39% | 19% | 12 h 40 min |
| September 12 | 84°F | 63°F | 40% | 19% | 12 h 30 min |
| September 13 | 83°F | 63°F | 40% | 19% | 12 h 30 min |
| September 14 | 83°F | 63°F | 40% | 19% | 12 h 30 min |
| September 15 | 83°F | 62°F | 40% | 19% | 12 h 30 min |
| September 16 | 83°F | 62°F | 40% | 19% | 12 h 30 min |
| September 17 | 82°F | 62°F | 40% | 19% | 12 h 20 min |
| September 18 | 82°F | 62°F | 40% | 19% | 12 h 20 min |
| September 19 | 82°F | 61°F | 40% | 19% | 12 h 20 min |
| September 20 | 81°F | 61°F | 40% | 19% | 12 h 20 min |
| September 21 | 81°F | 61°F | 40% | 19% | 12 h 10 min |
| September 22 | 81°F | 60°F | 40% | 19% | 12 h 10 min |
| September 23 | 81°F | 60°F | 40% | 19% | 12 h 10 min |
| September 24 | 80°F | 59°F | 40% | 19% | 12 h 10 min |
| September 25 | 80°F | 59°F | 40% | 19% | 12 h 10 min |
| September 26 | 80°F | 59°F | 40% | 19% | 12 h |
| September 27 | 79°F | 58°F | 40% | 19% | 12 h |
| September 28 | 79°F | 58°F | 40% | 19% | 12 h |
| September 29 | 79°F | 57°F | 40% | 19% | 12 h |
| September 30 | 78°F | 57°F | 40% | 19% | 11 h 50 min |
- Normal high
- 83°FSeptember average
- Normal low
- 62°FSeptember average
- Precipitation
- 4.91 inmonth total
- Days with precipitation
- 120.01 inch or more
- Days at 90°F or more
- 5
- Daylight
- 13 h to 11 h 50 minSeptember 1 to September 30
- Days at 70°F or more
- 29
- Days at 80°F or more
- 22
- Sunshine
- 77%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00093759; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Rocky Mount in September?
On a given September day the chance of 0.01 inch or more is 40% on average, highest around September 22 (40%). In all, 4.91 in falls on 12 days of a normal September, 1 of them with an inch or more.
In a normal September in Rocky Mount, 5 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00093759.
What are the records for September in Rocky Mount?
The warmest September temperature on this station's record (since 2000) is 101°F, on September 2, 2026; the coldest is 42°F, on September 24, 2022. The wettest September brought 10.40 in (2010).
The September mean against the 1991-2020 normal of 72.2°F: 2021 73.7°F (+1.5), 2022 72.5°F (+0.3), 2023 72.9°F (+0.7), 2024 72.7°F (+0.5), 2025 72.4°F (+0.2), 2026 75.8°F (+3.6). 6 of 6 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 73.7°F | +1.5°F | 2.94 in |
| 2022 | 72.5°F | +0.3°F | 4.37 in |
| 2023 | 72.9°F | +0.7°F | 3.29 in |
| 2024 | 72.7°F | +0.5°F | 9.66 in |
| 2025 | 72.4°F | +0.2°F | – |
| 2026 | 75.8°F | +3.6°F | 2.05 in |
Source: records: ACIS, station USW00093759; recent months: ACIS, station USW00093759. Records and recent months use complete months only.
How does September in Rocky Mount 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; Rocky Mount's is 83°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Rocky Mount in August88°F by day, 68°F at night
- Rocky Mount in October73°F by day, 50°F at night
- Rocky Mount through the yearEvery month, frost dates, records and recent years
- North Carolina in SeptemberThe statewide normal and the warmest and coolest places
- Southport: North Carolina's warmest Septembernormal high 87°F