Port Huron weather in September: Port Huron, Michigan: normal highs, lows, rain and records for September
Port Huron in September has a normal high of 73°F and a normal low of 57°F, a daily mean of 65°F, falling from 78°F on the 1st to 68°F by the 30th. Measurable precipitation falls on 10 days in a normal September, 3.32 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 23°C and low of 14°C, 84 mm of precipitation in September.
- NOAA stationPort Huron
- Station IDUSC00206680
- Location42.98°N 82.42°W
- Elevation590 ft (180 m)
- From the center1 miles
- Population28,342
- Jan 31° 20°
- Feb 33° 21°
- Mar 42° 28°
- Apr 54° 38°
- May 67° 49°
- Jun 76° 59°
- Jul 81° 65°
- Aug 80° 64°
- Sep 73° 57°
- Oct 61° 46°
- Nov 47° 35°
- Dec 36° 26°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Port Huron in September?
The normal high is 73°F and the normal low 57°F, for a daily mean of 65.0°F. September is 6.8°F cooler than August and 11.8°F warmer than October. September is the 4th warmest month of the year in Port Huron and the 3rd 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 2.5°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 37%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 78°F | 61°F | 33% | 20% |
| September 8 | 76°F | 59°F | 34% | 21% |
| September 15 | 74°F | 57°F | 34% | 21% |
| September 22 | 71°F | 55°F | 35% | 22% |
| September 30 | 68°F | 52°F | 37% | 22% |
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 | 61°F | 33% | 20% | 13 h 10 min |
| September 2 | 77°F | 61°F | 33% | 20% | 13 h 10 min |
| September 3 | 77°F | 61°F | 33% | 20% | 13 h 10 min |
| September 4 | 77°F | 61°F | 33% | 20% | 13 h 10 min |
| September 5 | 77°F | 60°F | 33% | 20% | 13 h |
| September 6 | 76°F | 60°F | 33% | 21% | 13 h |
| September 7 | 76°F | 60°F | 34% | 21% | 13 h |
| September 8 | 76°F | 59°F | 34% | 21% | 12 h 50 min |
| September 9 | 76°F | 59°F | 34% | 21% | 12 h 50 min |
| September 10 | 75°F | 59°F | 34% | 21% | 12 h 50 min |
| September 11 | 75°F | 58°F | 34% | 21% | 12 h 50 min |
| September 12 | 75°F | 58°F | 34% | 21% | 12 h 40 min |
| September 13 | 74°F | 58°F | 34% | 21% | 12 h 40 min |
| September 14 | 74°F | 58°F | 34% | 21% | 12 h 40 min |
| September 15 | 74°F | 57°F | 34% | 21% | 12 h 30 min |
| September 16 | 73°F | 57°F | 34% | 21% | 12 h 30 min |
| September 17 | 73°F | 57°F | 34% | 22% | 12 h 30 min |
| September 18 | 73°F | 56°F | 34% | 22% | 12 h 30 min |
| September 19 | 72°F | 56°F | 34% | 22% | 12 h 20 min |
| September 20 | 72°F | 55°F | 35% | 22% | 12 h 20 min |
| September 21 | 71°F | 55°F | 35% | 22% | 12 h 20 min |
| September 22 | 71°F | 55°F | 35% | 22% | 12 h 10 min |
| September 23 | 71°F | 54°F | 35% | 22% | 12 h 10 min |
| September 24 | 70°F | 54°F | 35% | 22% | 12 h 10 min |
| September 25 | 70°F | 54°F | 35% | 22% | 12 h 10 min |
| September 26 | 69°F | 53°F | 36% | 22% | 12 h |
| September 27 | 69°F | 53°F | 36% | 22% | 12 h |
| September 28 | 69°F | 53°F | 36% | 22% | 12 h |
| September 29 | 68°F | 52°F | 37% | 22% | 11 h 50 min |
| September 30 | 68°F | 52°F | 37% | 22% | 11 h 50 min |
- Normal high
- 73°FSeptember average
- Normal low
- 57°FSeptember average
- Precipitation
- 3.32 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
- 20
- Days at 80°F or more
- 8
- Sunshine
- 77%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00206680; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Port Huron in September?
On a given September day the chance of 0.01 inch or more is 34% on average, highest around September 30 (37%). In all, 3.32 in falls on 10 days of a normal September, 1 of them with an inch or more.
In a normal September in Port Huron, 1 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00206680.
What are the records for September in Port Huron?
The warmest September temperature on this station's record (since 1931) is 101°F, on September 2, 1953; the coldest is 25°F, on September 29, 1942. The wettest September brought 10.03 in (1996).
The September mean against the 1991-2020 normal of 65.0°F: 2021 66.9°F (+1.9), 2022 67.3°F (+2.3), 2023 66.0°F (+1.0), 2024 68.3°F (+3.3), 2025 63.5°F (−1.5), 2026 65.0°F (at normal). 4 of 6 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 66.9°F | +1.9°F | 7.65 in |
| 2022 | 67.3°F | +2.3°F | 0.64 in |
| 2023 | 66.0°F | +1.0°F | 3.22 in |
| 2024 | 68.3°F | +3.3°F | 1.06 in |
| 2025 | 63.5°F | −1.5°F | 0.86 in |
| 2026 | 65.0°F | at normal | 2.19 in |
Source: records: ACIS, station USC00206680; recent months: ACIS, station USC00206680. Records and recent months use complete months only.
How does September in Port Huron 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; Port Huron's is 73°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Port Huron in August80°F by day, 64°F at night
- Port Huron in October61°F by day, 46°F at night
- Port Huron 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