Flint weather in September: Flint, Michigan: normal highs, lows, rain and records for September
Flint in September has a normal high of 73°F and a normal low of 50°F, a daily mean of 62°F, falling from 78°F on the 1st to 67°F by the 30th. Measurable precipitation falls on 10 days in a normal September, 2.90 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 23°C and low of 10°C, 74 mm of precipitation in September.
- NOAA stationFlint Weather Station
- Station IDUSW00014826
- Location42.97°N 83.75°W
- Elevation770 ft (235 m)
- From the center5 miles
- Population79,735
- Jan 30° 16°
- Feb 33° 17°
- Mar 43° 25°
- Apr 57° 35°
- May 69° 46°
- Jun 78° 56°
- Jul 82° 60°
- Aug 80° 58°
- Sep 73° 50°
- Oct 60° 40°
- Nov 47° 31°
- Dec 35° 23°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Flint in September?
The normal high is 73°F and the normal low 50°F, for a daily mean of 61.7°F. September is 7.4°F cooler than August and 11.5°F warmer than October. September is the 4th warmest month of the year in Flint 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 59°F and 64°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 35%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 78°F | 55°F | 31% | 18% |
| September 8 | 76°F | 53°F | 31% | 18% |
| September 15 | 74°F | 51°F | 32% | 18% |
| September 22 | 71°F | 48°F | 33% | 19% |
| September 30 | 67°F | 45°F | 35% | 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 | 55°F | 31% | 18% | 13 h 10 min |
| September 2 | 77°F | 55°F | 31% | 18% | 13 h 10 min |
| September 3 | 77°F | 55°F | 31% | 18% | 13 h 10 min |
| September 4 | 77°F | 55°F | 31% | 18% | 13 h 10 min |
| September 5 | 77°F | 54°F | 31% | 18% | 13 h |
| September 6 | 77°F | 54°F | 31% | 18% | 13 h |
| September 7 | 76°F | 54°F | 31% | 18% | 13 h |
| September 8 | 76°F | 53°F | 31% | 18% | 12 h 50 min |
| September 9 | 76°F | 53°F | 31% | 18% | 12 h 50 min |
| September 10 | 75°F | 53°F | 31% | 18% | 12 h 50 min |
| September 11 | 75°F | 52°F | 32% | 18% | 12 h 50 min |
| September 12 | 75°F | 52°F | 32% | 18% | 12 h 40 min |
| September 13 | 74°F | 51°F | 32% | 18% | 12 h 40 min |
| September 14 | 74°F | 51°F | 32% | 18% | 12 h 40 min |
| September 15 | 74°F | 51°F | 32% | 18% | 12 h 30 min |
| September 16 | 73°F | 50°F | 32% | 18% | 12 h 30 min |
| September 17 | 73°F | 50°F | 32% | 19% | 12 h 30 min |
| September 18 | 73°F | 50°F | 33% | 19% | 12 h 30 min |
| September 19 | 72°F | 49°F | 33% | 19% | 12 h 20 min |
| September 20 | 72°F | 49°F | 33% | 19% | 12 h 20 min |
| September 21 | 71°F | 48°F | 33% | 19% | 12 h 20 min |
| September 22 | 71°F | 48°F | 33% | 19% | 12 h 10 min |
| September 23 | 70°F | 48°F | 34% | 19% | 12 h 10 min |
| September 24 | 70°F | 47°F | 34% | 19% | 12 h 10 min |
| September 25 | 70°F | 47°F | 34% | 19% | 12 h 10 min |
| September 26 | 69°F | 47°F | 34% | 19% | 12 h |
| September 27 | 69°F | 46°F | 35% | 19% | 12 h |
| September 28 | 68°F | 46°F | 35% | 20% | 12 h |
| September 29 | 68°F | 46°F | 35% | 20% | 11 h 50 min |
| September 30 | 67°F | 45°F | 35% | 20% | 11 h 50 min |
- Normal high
- 73°FSeptember average
- Normal low
- 50°FSeptember average
- Precipitation
- 2.90 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 USW00014826; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Flint in September?
On a given September day the chance of 0.01 inch or more is 32% on average, highest around September 30 (35%). In all, 2.90 in falls on 10 days of a normal September, 1 of them with an inch or more.
In a normal September in Flint, 1 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00014826.
How humid and windy is Flint in September?
At 3 p.m. the normal temperature is 65°F with 53% relative humidity and a dew point of 48°F; at 6 a.m. it is 50°F with 88% humidity. The wind averages 8.1 mph, most often from the west-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. | 50°F | 46°F | 88% | 5.9 mph | 56% |
| 9 a.m. | 56°F | 49°F | 76% | 8.6 mph | 54% |
| noon | 63°F | 48°F | 58% | 10.9 mph | 47% |
| 3 p.m. | 65°F | 48°F | 53% | 11.1 mph | 47% |
| 6 p.m. | 61°F | 48°F | 62% | 8.5 mph | 55% |
| 9 p.m. | 55°F | 48°F | 77% | 7.3 mph | 62% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00014826. 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 Flint?
The warmest September temperature on Flint's official record (since 1921) is 100°F, on September 15, 1939; the coldest is 26°F, on September 28, 1991. The wettest September brought 10.86 in (1986).
The September mean against the 1991-2020 normal of 61.7°F: 2021 64.6°F (+2.9), 2022 63.8°F (+2.1), 2023 63.8°F (+2.1), 2024 65.1°F (+3.4), 2025 63.1°F (+1.4), 2026 63.4°F (+1.7). 6 of 6 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 64.6°F | +2.9°F | 5.62 in |
| 2022 | 63.8°F | +2.1°F | 1.74 in |
| 2023 | 63.8°F | +2.1°F | 1.11 in |
| 2024 | 65.1°F | +3.4°F | 1.01 in |
| 2025 | 63.1°F | +1.4°F | 1.32 in |
| 2026 | 63.4°F | +1.7°F | 2.63 in |
Source: records: ACIS, NWS threaded record FNTthr; recent months: ACIS, station USW00014826. Records and recent months use complete months only.
How does September in Flint 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; Flint's is 73°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.