Boone weather in September: Boone, North Carolina: normal highs, lows, rain and records for September
Boone in September has a normal high of 72°F and a normal low of 50°F, a daily mean of 61°F, falling from 76°F on the 1st to 68°F by the 30th. Measurable precipitation falls on 11 days in a normal September, 5.73 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 22°C and low of 10°C, 146 mm of precipitation in September.
- NOAA stationBoone (1 mi SE)
- Station IDUSC00310982
- Location36.21°N 81.65°W
- Elevation3,100 ft (945 m)
- From the center1 miles
- Population20,080
- Jan 41° 22°
- Feb 45° 24°
- Mar 52° 29°
- Apr 62° 37°
- May 69° 46°
- Jun 76° 54°
- Jul 79° 58°
- Aug 78° 56°
- Sep 72° 50°
- Oct 63° 39°
- Nov 53° 30°
- Dec 45° 25°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Boone in September?
The normal high is 72°F and the normal low 50°F, for a daily mean of 61.3°F. September is 5.8°F cooler than August and 10.1°F warmer than October. September is the 4th warmest month of the year in Boone and the wettest. Across the month the normal high falls 8°F, from 76°F on September 1 to 68°F on September 30. From one year to the next September's mean temperature typically moves about 2.1°F either way (NOAA's standard deviation), so roughly two Septembers in three average between 59°F and 63°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 39%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 76°F | 54°F | 39% | 26% |
| September 8 | 74°F | 53°F | 37% | 25% |
| September 15 | 73°F | 51°F | 35% | 23% |
| September 22 | 71°F | 48°F | 35% | 23% |
| September 30 | 68°F | 45°F | 34% | 22% |
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 | 76°F | 54°F | 39% | 26% | 13 h |
| September 2 | 76°F | 54°F | 39% | 26% | 13 h |
| September 3 | 75°F | 54°F | 39% | 26% | 12 h 50 min |
| September 4 | 75°F | 54°F | 38% | 26% | 12 h 50 min |
| September 5 | 75°F | 53°F | 38% | 25% | 12 h 50 min |
| September 6 | 75°F | 53°F | 38% | 25% | 12 h 50 min |
| September 7 | 75°F | 53°F | 37% | 25% | 12 h 50 min |
| September 8 | 74°F | 53°F | 37% | 25% | 12 h 40 min |
| September 9 | 74°F | 52°F | 37% | 24% | 12 h 40 min |
| September 10 | 74°F | 52°F | 36% | 24% | 12 h 40 min |
| September 11 | 74°F | 52°F | 36% | 24% | 12 h 40 min |
| September 12 | 73°F | 52°F | 36% | 24% | 12 h 30 min |
| September 13 | 73°F | 51°F | 36% | 24% | 12 h 30 min |
| September 14 | 73°F | 51°F | 35% | 24% | 12 h 30 min |
| September 15 | 73°F | 51°F | 35% | 23% | 12 h 30 min |
| September 16 | 72°F | 50°F | 35% | 23% | 12 h 30 min |
| September 17 | 72°F | 50°F | 35% | 23% | 12 h 20 min |
| September 18 | 72°F | 50°F | 35% | 23% | 12 h 20 min |
| September 19 | 71°F | 49°F | 35% | 23% | 12 h 20 min |
| September 20 | 71°F | 49°F | 35% | 23% | 12 h 20 min |
| September 21 | 71°F | 49°F | 35% | 23% | 12 h 10 min |
| September 22 | 71°F | 48°F | 35% | 23% | 12 h 10 min |
| September 23 | 70°F | 48°F | 35% | 23% | 12 h 10 min |
| September 24 | 70°F | 48°F | 34% | 23% | 12 h 10 min |
| September 25 | 70°F | 47°F | 34% | 23% | 12 h 10 min |
| September 26 | 69°F | 47°F | 34% | 23% | 12 h |
| September 27 | 69°F | 47°F | 34% | 23% | 12 h |
| September 28 | 69°F | 46°F | 34% | 23% | 12 h |
| September 29 | 68°F | 46°F | 34% | 23% | 12 h |
| September 30 | 68°F | 45°F | 34% | 22% | 11 h 50 min |
- Normal high
- 72°FSeptember average
- Normal low
- 50°FSeptember average
- Precipitation
- 5.73 inmonth total
- Days with precipitation
- 110.01 inch or more
- Daylight
- 13 h to 11 h 50 minSeptember 1 to September 30
- Days at 70°F or more
- 21
- Days at 80°F or more
- 4
- Sunshine
- 74%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00310982; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Boone in September?
On a given September day the chance of 0.01 inch or more is 36% on average, highest around September 1 (39%). In all, 5.73 in falls on 11 days of a normal September, 2 of them with an inch or more.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00310982.
What are the records for September in Boone?
The warmest September temperature on this station's record (since 1980) is 88°F, on September 5, 2026; the coldest is 30°F, on September 24, 1983. The wettest September brought 23.01 in (2004).
The September mean against the 1991-2020 normal of 61.3°F: 2021 60.9°F (−0.4), 2022 59.9°F (−1.4), 2023 62.3°F (+1.0), 2024 62.4°F (+1.1), 2025 60.1°F (−1.2), 2026 65.8°F (+4.5). 3 of 6 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 60.9°F | −0.4°F | 4.60 in |
| 2022 | 59.9°F | −1.4°F | 4.51 in |
| 2023 | 62.3°F | +1.0°F | 3.02 in |
| 2024 | 62.4°F | +1.1°F | 21.26 in |
| 2025 | 60.1°F | −1.2°F | 4.14 in |
| 2026 | 65.8°F | +4.5°F | 6.12 in |
Source: records: ACIS, station USC00310982; recent months: ACIS, station USC00310982. Records and recent months use complete months only.
How does September in Boone 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; Boone's is 72°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.