Owosso weather in September: Owosso, Michigan: normal highs, lows, rain and records for September
Owosso in September has a normal high of 74°F and a normal low of 51°F, a daily mean of 62°F, falling from 78°F on the 1st to 68°F by the 30th. Measurable precipitation falls on 11 days in a normal September, 2.75 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 23°C and low of 11°C, 70 mm of precipitation in September.
- NOAA stationOwosso Wastewater Treatment Plant
- Station IDUSC00206300
- Location43.02°N 84.18°W
- Elevation730 ft (223 m)
- From the center1 miles
- Population14,544
- Jan 30° 16°
- Feb 33° 16°
- Mar 43° 24°
- Apr 57° 35°
- May 69° 46°
- Jun 78° 56°
- Jul 82° 60°
- Aug 80° 59°
- Sep 74° 51°
- Oct 61° 40°
- Nov 47° 31°
- Dec 36° 23°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Owosso in September?
The normal high is 74°F and the normal low 51°F, for a daily mean of 62.3°F. September is 7.0°F cooler than August and 12.0°F warmer than October. September is the 4th warmest month of the year in Owosso and the 7th wettest. Across the month the normal high falls 10°F, from 78°F on September 1 to 68°F on September 30. From one year to the next September's mean temperature typically moves about 2.8°F either way (NOAA's standard deviation), so roughly two Septembers in three average between 60°F and 65°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 40%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 78°F | 56°F | 36% | 20% |
| September 8 | 76°F | 54°F | 37% | 21% |
| September 15 | 74°F | 51°F | 37% | 22% |
| September 22 | 71°F | 49°F | 38% | 23% |
| September 30 | 68°F | 46°F | 40% | 24% |
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 | 56°F | 36% | 20% | 13 h 10 min |
| September 2 | 78°F | 56°F | 36% | 20% | 13 h 10 min |
| September 3 | 78°F | 55°F | 36% | 20% | 13 h 10 min |
| September 4 | 77°F | 55°F | 36% | 20% | 13 h 10 min |
| September 5 | 77°F | 55°F | 36% | 20% | 13 h |
| September 6 | 77°F | 54°F | 36% | 21% | 13 h |
| September 7 | 77°F | 54°F | 36% | 21% | 13 h |
| September 8 | 76°F | 54°F | 37% | 21% | 12 h 50 min |
| September 9 | 76°F | 54°F | 37% | 21% | 12 h 50 min |
| September 10 | 76°F | 53°F | 37% | 21% | 12 h 50 min |
| September 11 | 75°F | 53°F | 37% | 21% | 12 h 50 min |
| September 12 | 75°F | 52°F | 37% | 21% | 12 h 40 min |
| September 13 | 75°F | 52°F | 37% | 22% | 12 h 40 min |
| September 14 | 74°F | 52°F | 37% | 22% | 12 h 40 min |
| September 15 | 74°F | 51°F | 37% | 22% | 12 h 30 min |
| September 16 | 74°F | 51°F | 38% | 22% | 12 h 30 min |
| September 17 | 73°F | 51°F | 38% | 22% | 12 h 30 min |
| September 18 | 73°F | 50°F | 38% | 22% | 12 h 30 min |
| September 19 | 73°F | 50°F | 38% | 22% | 12 h 20 min |
| September 20 | 72°F | 49°F | 38% | 22% | 12 h 20 min |
| September 21 | 72°F | 49°F | 38% | 22% | 12 h 20 min |
| September 22 | 71°F | 49°F | 38% | 23% | 12 h 10 min |
| September 23 | 71°F | 48°F | 38% | 23% | 12 h 10 min |
| September 24 | 70°F | 48°F | 38% | 23% | 12 h 10 min |
| September 25 | 70°F | 48°F | 39% | 23% | 12 h 10 min |
| September 26 | 70°F | 47°F | 39% | 23% | 12 h |
| September 27 | 69°F | 47°F | 39% | 23% | 12 h |
| September 28 | 69°F | 46°F | 39% | 23% | 12 h |
| September 29 | 68°F | 46°F | 40% | 24% | 11 h 50 min |
| September 30 | 68°F | 46°F | 40% | 24% | 11 h 50 min |
- Normal high
- 74°FSeptember average
- Normal low
- 51°FSeptember average
- Precipitation
- 2.75 inmonth total
- Days with precipitation
- 110.01 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
- 20
- Days at 80°F or more
- 9
- Sunshine
- 76%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00206300; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Owosso in September?
On a given September day the chance of 0.01 inch or more is 37% on average, highest around September 30 (40%). In all, 2.75 in falls on 11 days of a normal September.
In a normal September in Owosso, 1 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00206300.
What are the records for September in Owosso?
The warmest September temperature on this station's record (since 1896) is 103°F, on September 8, 1933; the coldest is 26°F, on September 28, 1991. The wettest September brought 10.26 in (1986).
The September mean against the 1991-2020 normal of 62.3°F: 2021 64.1°F (+1.8), 2022 63.1°F (+0.9), 2023 62.9°F (+0.6), 2024 65.8°F (+3.5). 4 of 4 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 64.1°F | +1.8°F | 4.26 in |
| 2022 | 63.1°F | +0.9°F | 2.47 in |
| 2023 | 62.9°F | +0.6°F | 1.86 in |
| 2024 | 65.8°F | +3.5°F | 0.91 in |
Source: records: ACIS, station USC00206300; recent months: ACIS, station USC00206300. Records and recent months use complete months only.
How does September in Owosso 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; Owosso's is 74°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.