Carmel weather in September: Carmel, Indiana: normal highs, lows, rain and records for September
Carmel in September has a normal high of 77°F and a normal low of 55°F, a daily mean of 66°F, falling from 81°F on the 1st to 72°F by the 30th. Measurable precipitation falls on 8 days in a normal September, 3.46 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 25°C and low of 13°C, 88 mm of precipitation in September.
- NOAA stationCarmel (3 mi E)
- Station IDUSC00121303
- Location39.96°N 86.06°W
- Elevation752 ft (229 m)
- From the center5 miles
- Population103,606
- Jan 35° 19°
- Feb 39° 21°
- Mar 49° 30°
- Apr 62° 41°
- May 72° 51°
- Jun 81° 61°
- Jul 84° 64°
- Aug 83° 62°
- Sep 77° 55°
- Oct 65° 43°
- Nov 51° 33°
- Dec 39° 24°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Carmel in September?
The normal high is 77°F and the normal low 55°F, for a daily mean of 65.8°F. September is 6.8°F cooler than August and 12.1°F warmer than October. September is the 4th warmest month of the year in Carmel and the 6th wettest. Across the month the normal high falls 9°F, from 81°F on September 1 to 72°F on September 30. From one year to the next September's mean temperature typically moves about 2.6°F either way (NOAA's standard deviation), so roughly two Septembers in three average between 63°F and 68°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 28%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 81°F | 59°F | 27% | 18% |
| September 8 | 80°F | 57°F | 26% | 17% |
| September 15 | 78°F | 55°F | 25% | 17% |
| September 22 | 75°F | 52°F | 26% | 18% |
| September 30 | 72°F | 49°F | 28% | 18% |
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 | 81°F | 59°F | 27% | 18% | 13 h 10 min |
| September 2 | 81°F | 59°F | 26% | 18% | 13 h |
| September 3 | 81°F | 59°F | 26% | 17% | 13 h |
| September 4 | 80°F | 59°F | 26% | 17% | 13 h |
| September 5 | 80°F | 58°F | 26% | 17% | 13 h |
| September 6 | 80°F | 58°F | 26% | 17% | 12 h 50 min |
| September 7 | 80°F | 58°F | 26% | 17% | 12 h 50 min |
| September 8 | 80°F | 57°F | 26% | 17% | 12 h 50 min |
| September 9 | 79°F | 57°F | 26% | 17% | 12 h 50 min |
| September 10 | 79°F | 57°F | 26% | 17% | 12 h 40 min |
| September 11 | 79°F | 56°F | 26% | 17% | 12 h 40 min |
| September 12 | 78°F | 56°F | 26% | 17% | 12 h 40 min |
| September 13 | 78°F | 56°F | 26% | 17% | 12 h 40 min |
| September 14 | 78°F | 55°F | 25% | 17% | 12 h 30 min |
| September 15 | 78°F | 55°F | 25% | 17% | 12 h 30 min |
| September 16 | 77°F | 55°F | 25% | 17% | 12 h 30 min |
| September 17 | 77°F | 54°F | 26% | 17% | 12 h 30 min |
| September 18 | 77°F | 54°F | 26% | 17% | 12 h 20 min |
| September 19 | 76°F | 53°F | 26% | 17% | 12 h 20 min |
| September 20 | 76°F | 53°F | 26% | 17% | 12 h 20 min |
| September 21 | 76°F | 53°F | 26% | 17% | 12 h 20 min |
| September 22 | 75°F | 52°F | 26% | 18% | 12 h 10 min |
| September 23 | 75°F | 52°F | 26% | 18% | 12 h 10 min |
| September 24 | 75°F | 51°F | 27% | 18% | 12 h 10 min |
| September 25 | 74°F | 51°F | 27% | 18% | 12 h 10 min |
| September 26 | 74°F | 51°F | 27% | 18% | 12 h |
| September 27 | 73°F | 50°F | 27% | 18% | 12 h |
| September 28 | 73°F | 50°F | 27% | 18% | 12 h |
| September 29 | 73°F | 49°F | 27% | 18% | 11 h 50 min |
| September 30 | 72°F | 49°F | 28% | 18% | 11 h 50 min |
- Normal high
- 77°FSeptember average
- Normal low
- 55°FSeptember average
- Precipitation
- 3.46 inmonth total
- Days with precipitation
- 80.01 inch or more
- Days at 90°F or more
- 2
- Daylight
- 13 h 10 min to 11 h 50 minSeptember 1 to September 30
- Days at 70°F or more
- 26
- Days at 80°F or more
- 14
- Sunshine
- 80%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00121303; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Carmel in September?
On a given September day the chance of 0.01 inch or more is 26% on average, highest around September 30 (28%). In all, 3.46 in falls on 8 days of a normal September, 1 of them with an inch or more.
In a normal September in Carmel, 2 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00121303.
What are the records for September in Carmel?
The September mean against the 1991-2020 normal of 65.8°F: 2023 66.9°F (+1.1), 2024 67.2°F (+1.4), 2025 67.1°F (+1.3). 3 of 3 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2023 | 66.9°F | +1.1°F | 1.62 in |
| 2024 | 67.2°F | +1.4°F | 3.03 in |
| 2025 | 67.1°F | +1.3°F | 1.07 in |
Source: recent months: ACIS, station USC00121303. Records and recent months use complete months only.
How does September in Carmel compare across Indiana?
Across the 99 places PlainClimate covers in Indiana, September normal highs run from 74°F in Angola to 82°F in English; Carmel's is 77°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.