Mount Clemens weather in September: Mount Clemens, Michigan: normal highs, lows, rain and records for September
Mount Clemens in September has a normal high of 73°F and a normal low of 53°F, a daily mean of 63°F, falling from 78°F on the 1st to 67°F by the 30th. Measurable precipitation falls on 10 days in a normal September, 3.17 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 23°C and low of 12°C, 81 mm of precipitation in September.
- NOAA stationMount Clemens Ang Base
- Station IDUSW00014804
- Location42.61°N 82.82°W
- Elevation580 ft (177 m)
- From the center3 miles
- Population15,480
- Jan 32° 18°
- Feb 34° 19°
- Mar 44° 26°
- Apr 56° 36°
- May 68° 47°
- Jun 78° 57°
- Jul 82° 62°
- Aug 80° 61°
- Sep 73° 53°
- Oct 61° 43°
- 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 Mount Clemens in September?
The normal high is 73°F and the normal low 53°F, for a daily mean of 63.0°F. September is 7.3°F cooler than August and 11.5°F warmer than October. September is the 4th warmest month of the year in Mount Clemens and the 6th wettest. Across the month the normal high falls 11°F, from 78°F on September 1 to 67°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 60°F and 66°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 | 78°F | 58°F | 31% | 20% |
| September 8 | 76°F | 56°F | 31% | 20% |
| September 15 | 74°F | 53°F | 31% | 20% |
| September 22 | 71°F | 51°F | 32% | 20% |
| September 30 | 67°F | 48°F | 33% | 20% |
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 | 78°F | 58°F | 31% | 20% | 13 h 10 min |
| September 2 | 77°F | 58°F | 31% | 20% | 13 h 10 min |
| September 3 | 77°F | 57°F | 31% | 20% | 13 h 10 min |
| September 4 | 77°F | 57°F | 31% | 20% | 13 h |
| September 5 | 77°F | 57°F | 31% | 20% | 13 h |
| September 6 | 76°F | 57°F | 31% | 20% | 13 h |
| September 7 | 76°F | 56°F | 31% | 20% | 13 h |
| September 8 | 76°F | 56°F | 31% | 20% | 12 h 50 min |
| September 9 | 76°F | 56°F | 31% | 20% | 12 h 50 min |
| September 10 | 75°F | 55°F | 31% | 20% | 12 h 50 min |
| September 11 | 75°F | 55°F | 31% | 20% | 12 h 50 min |
| September 12 | 75°F | 55°F | 31% | 20% | 12 h 40 min |
| September 13 | 74°F | 54°F | 31% | 20% | 12 h 40 min |
| September 14 | 74°F | 54°F | 31% | 20% | 12 h 40 min |
| September 15 | 74°F | 53°F | 31% | 20% | 12 h 30 min |
| September 16 | 73°F | 53°F | 31% | 20% | 12 h 30 min |
| September 17 | 73°F | 53°F | 31% | 20% | 12 h 30 min |
| September 18 | 72°F | 52°F | 31% | 20% | 12 h 30 min |
| September 19 | 72°F | 52°F | 32% | 20% | 12 h 20 min |
| September 20 | 72°F | 52°F | 32% | 20% | 12 h 20 min |
| September 21 | 71°F | 51°F | 32% | 20% | 12 h 20 min |
| September 22 | 71°F | 51°F | 32% | 20% | 12 h 10 min |
| September 23 | 70°F | 50°F | 32% | 20% | 12 h 10 min |
| September 24 | 70°F | 50°F | 32% | 20% | 12 h 10 min |
| September 25 | 70°F | 50°F | 33% | 20% | 12 h 10 min |
| September 26 | 69°F | 49°F | 33% | 20% | 12 h |
| September 27 | 69°F | 49°F | 33% | 20% | 12 h |
| September 28 | 68°F | 49°F | 33% | 20% | 12 h |
| September 29 | 68°F | 48°F | 33% | 21% | 11 h 50 min |
| September 30 | 67°F | 48°F | 33% | 20% | 11 h 50 min |
- Normal high
- 73°FSeptember average
- Normal low
- 53°FSeptember average
- Precipitation
- 3.17 inmonth total
- Days with precipitation
- 100.01 inch or more
- Days at 90°F or more
- 1
- Daylight
- 13 h 10 min to 11 h 50 minSeptember 1 to September 30
- Days at 70°F or more
- 21
- Days at 80°F or more
- 8
- Sunshine
- 77%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00014804; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Mount Clemens in September?
On a given September day the chance of 0.01 inch or more is 32% on average, highest around September 30 (33%). In all, 3.17 in falls on 10 days of a normal September, 1 of them with an inch or more.
In a normal September in Mount Clemens, 1 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00014804.
How humid and windy is Mount Clemens in September?
At 3 p.m. the normal temperature is 66°F with 55% relative humidity and a dew point of 50°F; at 6 a.m. it is 52°F with 89% humidity. The wind averages 7.8 mph, most often from the southwest in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 52°F | 48°F | 89% | 6.0 mph | 53% |
| 9 a.m. | 58°F | 51°F | 78% | 8.6 mph | 43% |
| noon | 64°F | 51°F | 61% | 10.0 mph | 37% |
| 3 p.m. | 66°F | 50°F | 55% | 10.5 mph | 35% |
| 6 p.m. | 61°F | 50°F | 65% | 7.8 mph | 37% |
| 9 p.m. | 56°F | 50°F | 79% | 6.7 mph | 49% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00014804. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for September in Mount Clemens?
The warmest September temperature on this station's record (since 1896) is 100°F, on September 1, 1953; the coldest is 28°F, on September 23, 1896. The wettest September brought 7.73 in (2008).
The September mean against the 1991-2020 normal of 63.0°F: 2021 65.1°F (+2.1), 2022 64.5°F (+1.5), 2023 64.4°F (+1.4), 2024 67.0°F (+4.0), 2025 65.9°F (+2.9), 2026 67.2°F (+4.2). 6 of 6 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 65.1°F | +2.1°F | 5.68 in |
| 2022 | 64.5°F | +1.5°F | 1.61 in |
| 2023 | 64.4°F | +1.4°F | 1.62 in |
| 2024 | 67.0°F | +4.0°F | 1.17 in |
| 2025 | 65.9°F | +2.9°F | 1.26 in |
| 2026 | 67.2°F | +4.2°F | – |
Source: records: ACIS, station USW00014804; recent months: ACIS, station USW00014804. Records and recent months use complete months only.
How does September in Mount Clemens 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; Mount Clemens's is 73°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Mount Clemens in August80°F by day, 61°F at night
- Mount Clemens in October61°F by day, 43°F at night
- Mount Clemens through the yearEvery month, frost dates, records and recent years
- Michigan in SeptemberThe statewide normal and the warmest and coolest places
- Eau Claire: Michigan's warmest Septembernormal high 76°F