Dearborn weather in September: Dearborn, Michigan: normal highs, lows, rain and records for September
Dearborn in September has a normal high of 75°F and a normal low of 53°F, a daily mean of 64°F, falling from 80°F on the 1st to 70°F by the 30th. Measurable precipitation falls on 9 days in a normal September, 3.01 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 24°C and low of 12°C, 76 mm of precipitation in September.
- NOAA stationDearborn
- Station IDUSC00202015
- Location42.32°N 83.24°W
- Elevation605 ft (184 m)
- From the center1 miles
- Population106,377
- Jan 32° 18°
- Feb 35° 19°
- Mar 45° 26°
- Apr 58° 37°
- May 70° 48°
- Jun 79° 58°
- Jul 84° 62°
- Aug 82° 61°
- Sep 75° 53°
- Oct 62° 42°
- Nov 48° 32°
- Dec 37° 24°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Dearborn in September?
The normal high is 75°F and the normal low 53°F, for a daily mean of 64.3°F. September is 7.0°F cooler than August and 12.4°F warmer than October. September is the 4th warmest month of the year in Dearborn and the 6th wettest. Across the month the normal high falls 10°F, from 80°F on September 1 to 70°F on September 30. From one year to the next September's mean temperature typically moves about 2.5°F either way (NOAA's standard deviation), so roughly two Septembers in three average between 62°F and 67°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 33%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 80°F | 59°F | 31% | 19% |
| September 8 | 78°F | 56°F | 31% | 19% |
| September 15 | 76°F | 54°F | 31% | 20% |
| September 22 | 73°F | 51°F | 32% | 21% |
| September 30 | 70°F | 48°F | 33% | 21% |
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 | 80°F | 59°F | 31% | 19% | 13 h 10 min |
| September 2 | 79°F | 58°F | 31% | 19% | 13 h 10 min |
| September 3 | 79°F | 58°F | 31% | 19% | 13 h 10 min |
| September 4 | 79°F | 58°F | 31% | 19% | 13 h |
| September 5 | 79°F | 57°F | 31% | 19% | 13 h |
| September 6 | 78°F | 57°F | 31% | 19% | 13 h |
| September 7 | 78°F | 57°F | 31% | 19% | 13 h |
| September 8 | 78°F | 56°F | 31% | 19% | 12 h 50 min |
| September 9 | 78°F | 56°F | 31% | 20% | 12 h 50 min |
| September 10 | 77°F | 56°F | 31% | 20% | 12 h 50 min |
| September 11 | 77°F | 55°F | 31% | 20% | 12 h 40 min |
| September 12 | 77°F | 55°F | 31% | 20% | 12 h 40 min |
| September 13 | 76°F | 55°F | 31% | 20% | 12 h 40 min |
| September 14 | 76°F | 54°F | 31% | 20% | 12 h 40 min |
| September 15 | 76°F | 54°F | 31% | 20% | 12 h 30 min |
| September 16 | 75°F | 53°F | 31% | 20% | 12 h 30 min |
| September 17 | 75°F | 53°F | 31% | 20% | 12 h 30 min |
| September 18 | 75°F | 53°F | 31% | 20% | 12 h 20 min |
| September 19 | 74°F | 52°F | 31% | 20% | 12 h 20 min |
| September 20 | 74°F | 52°F | 31% | 20% | 12 h 20 min |
| September 21 | 73°F | 51°F | 32% | 21% | 12 h 20 min |
| September 22 | 73°F | 51°F | 32% | 21% | 12 h 10 min |
| September 23 | 73°F | 51°F | 32% | 21% | 12 h 10 min |
| September 24 | 72°F | 50°F | 32% | 21% | 12 h 10 min |
| September 25 | 72°F | 50°F | 32% | 21% | 12 h 10 min |
| September 26 | 71°F | 49°F | 33% | 21% | 12 h |
| September 27 | 71°F | 49°F | 33% | 21% | 12 h |
| September 28 | 70°F | 48°F | 33% | 21% | 12 h |
| September 29 | 70°F | 48°F | 33% | 21% | 11 h 50 min |
| September 30 | 70°F | 48°F | 33% | 21% | 11 h 50 min |
- Normal high
- 75°FSeptember average
- Normal low
- 53°FSeptember average
- Precipitation
- 3.01 inmonth total
- Days with precipitation
- 90.01 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
- 24
- Days at 80°F or more
- 12
- Sunshine
- 77%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00202015; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Dearborn in September?
On a given September day the chance of 0.01 inch or more is 31% on average, highest around September 30 (33%). In all, 3.01 in falls on 9 days of a normal September, 1 of them with an inch or more.
In a normal September in Dearborn, 2 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00202015.
What are the records for September in Dearborn?
The warmest September temperature on this station's record (since 1952) is 100°F, on September 9, 2002; the coldest is 29°F, on September 30, 1993. The wettest September brought 6.85 in (2018).
The September mean against the 1991-2020 normal of 64.3°F: 2022 65.7°F (+1.4), 2023 65.1°F (+0.8), 2024 68.1°F (+3.8), 2025 66.1°F (+1.8), 2026 67.1°F (+2.8). 5 of 5 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2022 | 65.7°F | +1.4°F | 1.61 in |
| 2023 | 65.1°F | +0.8°F | 1.70 in |
| 2024 | 68.1°F | +3.8°F | 1.03 in |
| 2025 | 66.1°F | +1.8°F | 2.20 in |
| 2026 | 67.1°F | +2.8°F | 3.60 in |
Source: records: ACIS, station USC00202015; recent months: ACIS, station USC00202015. Records and recent months use complete months only.
How does September in Dearborn compare across Michigan?
Across the 140 places PlainClimate covers in Michigan, September normal highs run from 65°F in Munising to 76°F in Eau Claire; Dearborn's is 75°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.