Morristown weather in September: Morristown, Tennessee: normal highs, lows, rain and records for September
Morristown in September has a normal high of 81°F and a normal low of 59°F, a daily mean of 70°F, falling from 84°F on the 1st to 76°F by the 30th. Measurable precipitation falls on 9 days in a normal September, 3.24 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 27°C and low of 15°C, 82 mm of precipitation in September.
- NOAA stationMorristown Radio WCRK
- Station IDUSC00406271
- Location36.21°N 83.33°W
- Elevation1,344 ft (410 m)
- Population32,994
- Jan 46° 27°
- Feb 51° 30°
- Mar 60° 36°
- Apr 69° 45°
- May 77° 55°
- Jun 83° 63°
- Jul 86° 67°
- Aug 86° 65°
- Sep 81° 59°
- Oct 70° 47°
- Nov 59° 36°
- Dec 49° 31°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Morristown in September?
The normal high is 81°F and the normal low 59°F, for a daily mean of 69.6°F. September is 5.8°F cooler than August and 11.1°F warmer than October. September is the 4th warmest month of the year in Morristown and the 11th 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 2.4°F either way (NOAA's standard deviation), so roughly two Septembers in three average between 67°F and 72°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 30%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 84°F | 63°F | 30% | 18% |
| September 8 | 83°F | 61°F | 29% | 18% |
| September 15 | 81°F | 59°F | 29% | 17% |
| September 22 | 79°F | 57°F | 29% | 17% |
| September 30 | 76°F | 54°F | 29% | 17% |
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 | 63°F | 30% | 18% | 13 h |
| September 2 | 84°F | 63°F | 30% | 18% | 13 h |
| September 3 | 84°F | 62°F | 30% | 18% | 12 h 50 min |
| September 4 | 84°F | 62°F | 30% | 18% | 12 h 50 min |
| September 5 | 83°F | 62°F | 30% | 18% | 12 h 50 min |
| September 6 | 83°F | 62°F | 30% | 18% | 12 h 50 min |
| September 7 | 83°F | 61°F | 30% | 18% | 12 h 50 min |
| September 8 | 83°F | 61°F | 29% | 18% | 12 h 40 min |
| September 9 | 83°F | 61°F | 29% | 17% | 12 h 40 min |
| September 10 | 82°F | 61°F | 29% | 17% | 12 h 40 min |
| September 11 | 82°F | 60°F | 29% | 17% | 12 h 40 min |
| September 12 | 82°F | 60°F | 29% | 17% | 12 h 30 min |
| September 13 | 82°F | 60°F | 29% | 17% | 12 h 30 min |
| September 14 | 81°F | 59°F | 29% | 17% | 12 h 30 min |
| September 15 | 81°F | 59°F | 29% | 17% | 12 h 30 min |
| September 16 | 81°F | 59°F | 29% | 17% | 12 h 30 min |
| September 17 | 80°F | 58°F | 29% | 17% | 12 h 20 min |
| September 18 | 80°F | 58°F | 29% | 17% | 12 h 20 min |
| September 19 | 80°F | 58°F | 29% | 17% | 12 h 20 min |
| September 20 | 80°F | 57°F | 29% | 17% | 12 h 20 min |
| September 21 | 79°F | 57°F | 29% | 17% | 12 h 10 min |
| September 22 | 79°F | 57°F | 29% | 17% | 12 h 10 min |
| September 23 | 79°F | 56°F | 29% | 17% | 12 h 10 min |
| September 24 | 78°F | 56°F | 29% | 18% | 12 h 10 min |
| September 25 | 78°F | 56°F | 29% | 18% | 12 h 10 min |
| September 26 | 78°F | 55°F | 29% | 18% | 12 h |
| September 27 | 77°F | 55°F | 29% | 18% | 12 h |
| September 28 | 77°F | 54°F | 29% | 17% | 12 h |
| September 29 | 77°F | 54°F | 29% | 17% | 12 h |
| September 30 | 76°F | 54°F | 29% | 17% | 11 h 50 min |
- Normal high
- 81°FSeptember average
- Normal low
- 59°FSeptember average
- Precipitation
- 3.24 inmonth total
- Days with precipitation
- 90.01 inch or more
- Days at 90°F or more
- 3
- 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
- 18
- Sunshine
- 78%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00406271; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Morristown in September?
On a given September day the chance of 0.01 inch or more is 29% on average, highest around September 1 (30%). In all, 3.24 in falls on 9 days of a normal September, 1 of them with an inch or more.
In a normal September in Morristown, 3 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00406271.
What are the records for September in Morristown?
The September mean against the 1991-2020 normal of 69.6°F: 2021 68.3°F (−1.3), 2022 68.2°F (−1.4), 2024 71.5°F (+1.9). 1 of 3 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 68.3°F | −1.3°F | 4.61 in |
| 2022 | 68.2°F | −1.4°F | 1.82 in |
| 2024 | 71.5°F | +1.9°F | 8.49 in |
Source: recent months: ACIS, station USC00406271. Records and recent months use complete months only.
How does September in Morristown compare across Tennessee?
Across the 116 places PlainClimate covers in Tennessee, September normal highs run from 74°F in Roan Mountain to 86°F in Memphis; Morristown's is 81°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Morristown in August86°F by day, 65°F at night
- Morristown in October70°F by day, 47°F at night
- Morristown through the yearEvery month, frost dates, records and recent years
- Tennessee in SeptemberThe statewide normal and the warmest and coolest places
- Memphis: Tennessee's warmest Septembernormal high 86°F