Flint, Michigan Weather
Day 93 of summer. Read today’s microseason across nine climate regions →
Flint weather forecast — hour by hour, 7-day outlook, NOAA radar
Conditions updated 10:21 AM EDT · Open-Meteo
- TodaySep 21Overcast——62°49°—
- TuesdaySep 22Overcast——64°47°+2°
- WednesdaySep 23Overcast——71°52°+7°
- ThursdaySep 24Overcast——72°46°+1°
- FridaySep 25Overcast——72°48°0°
- SaturdaySep 26Overcast——75°47°+3°
- SundaySep 27Light Drizzle—0.01″63°56°-12°
Air quality now AQI 35 · Good
AQI 35 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 5.2 µg/m³, PM10 at 5.7 µg/m³ — typical background levels with no transport signature.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
PM × Wind × Precip
PM2.5 at 5.2 µg/m³, PM10 at 5.7 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.91
- Wind
- breezy
- Recent rain
- 0h in last 6h
- Pattern
- background
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
September dries up ditches or breaks down bridges.
- Moonrise
- 5:16 PM
- Moonset
- 1:44 AM
- In sign
- ♑︎ Capricorn
Flint at a glance
- Today vs. normal: Today averages 56°F (high 62°F, low 49°F), 3°F below the 59°F normal for Sep 21
- Last frost: May 3 (1991–2020 median, NOAA station 7 km away)
- Microseason: Sep 21–25
- Planting calendar: September — plant garlic (overwinter); harvest tomatoes, peppers, beans, summer squash, winter squash
16-Day Forecast — Flint
- Mon62°49°0%
- Tue64°47°1%
- Wed71°52°5%
- Thu72°46°2%
- Fri72°48°0%
- Sat75°47°0%
- Sun63°56°3%
- Mon76°57°5%
- Tue83°58°21%
- Wed75°57°22%
- Thu69°47°21%
- Fri61°42°13%
- Sat81°52°19%
- Sun63°49°16%
- Mon55°41°26%
- Tue55°35°23%
Forecast data from Open-Meteo (CC BY 4.0).
Live wind & temperature near Flint
Interactive wind and temperature map centered on Flint — it loads in your browser. Open the full weather map.
Right now in the garden
Fall planting + final harvests
As of September 21, the season's first frost (typically October 13) is approaching. Pick what frost-tender plants still carry before the next cold front. This city's planting calendar for September: plant garlic (overwinter); harvest tomatoes, peppers, beans, summer squash, and winter squash.
Sun & seasons in Flint
Flint sits in Genesee County, where the year’s longest day runs 15h 22m of daylight and its shortest just 9h 0m — a swing of +6h 22m between the June and December solstices. Clocks spring forward on Sunday, March 8, 2026 and fall back on Sunday, November 1, 2026.
Detroit, the state’s largest city, lies about 53 miles to the SE. The nearest town Flint tracks is South Lyon, roughly 39 miles to the S.
Air quality in Flint
Air quality in Flint’s county has held roughly steady since 2020; its cleanest year on record was 2025 (median AQI 38). See the full air-quality history for Flint.
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| April | lettuce, peas, spinach, radishes | — |
| May | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | lettuce, spinach, radishes |
| June | tomatoes, peppers, beans, squash | lettuce, peas, spinach, radishes |
| July | tomatoes, peppers, beans, squash, fall brassicas, carrots | lettuce, peas, spinach, beans, summer squash, garlic |
| August | — | tomatoes, peppers, beans, summer squash, garlic |
| September | garlic (overwinter) | tomatoes, peppers, beans, summer squash, winter squash |
| October | — | tomatoes, peppers, beans, summer squash, winter squash, fall brassicas, carrots |
| November | — | fall brassicas, carrots |
A year in weather
Flint peaks at about 71°F in July and bottoms near 23°F in January; May brings the heaviest rain (3.7 inches) and February the least (1.7 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 23° | 2.1″ | 6 |
| February | 25° | 1.7″ | 4 |
| March | 33° | 1.9″ | 5 |
| April | 46° | 3.4″ | 7 |
| May | 57° | 3.7″ | 7 |
| June | 67° | 3.1″ | 6 |
| July | 71° | 3.4″ | 6 |
| August | 69° | 3.3″ | 6 |
| September | 62° | 2.9″ | 6 |
| October | 50° | 3.0″ | 7 |
| November | 39° | 2.4″ | 6 |
| December | 29° | 2.1″ | 6 |
Regional context
Similar climates Burton, MI, Beecher, MI, Mount Morris, MI
Drawing on NOAA NCEI 1991-2020 normals, Flint's January averages 23°F and July 71°F — 48°F apart — while precipitation totals roughly 32.9 inches over some 71 days.
Summer convection drives Flint's precipitation: May logs 3.7 inches on 7.1 rainy days, against February's 1.7 inches on 4.4 — warm-season storms carry Flint's moisture. That puts Flint in a summer-convective cohort with places like Burton, MI, Beecher, MI and Mount Morris, MI.
The cool-season window in Flint starts at May 3, when nights stop freezing — think kale, peas, spinach, and parsnips. Warm-soil crops in Flint wait about two weeks past Flint's last frost, once the soil warms. Flint's window closes around October 13 as Flint's overnight lows return below freezing. In about half of years, Flint's last freeze comes after May 3.
Similar climates: Burton, MI, Beecher, MI, Mount Morris, MI, Grand Blanc, MI, Swartz Creek, MI.
Frequently asked
- When does it freeze in Flint?
- In Flint, expect the last spring frost near May 3; Flint's first autumn frost comes around October 13.
- What is the rainy season in Flint?
- Flint sees its heaviest rain in May (around 3.7 inches), part of roughly 33 inches a year.
- What is the warmest month in Flint?
- On average July tops the year in Flint at about 71°F.
- What is the coldest month in Flint?
- The coldest stretch in Flint falls in January, around 23°F on average.
- When can I start a vegetable garden in Flint?
- Around May 3, start frost-hardy crops in Flint; tomatoes and basil belong a fortnight later.
- How many rainy days does Flint get?
- Expect roughly 71 wet days a year in Flint.
- What hardiness zone is Flint?
- Since January in Flint averages 23°F, Flint's USDA zone follows that floor — confirm it by ZIP.
- What is the 10-day forecast for Flint?
- Flint's extended outlook — daily high and low temperatures and precipitation chances for each upcoming day — is in the daily forecast above.
- Will it rain this week in Flint?
- See this week's day-by-day rain chances for Flint in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Flint?
- Current conditions for Flint and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Flint forecast updated?
- The Flint forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Flint?
- Today's sunrise and sunset times for Flint are in the Almanac section above, along with civil dawn, civil dusk, and day length. Day length is longest near the summer solstice and shortest near the winter solstice.
- How accurate is the weather forecast for Flint?
- The next few days in Flint's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Flint sits at 43.0°N; its climate zone is warm-summer humid continental (Köppen approximation).
ZIP codes in Flint
- 48502
- 48503
- 48504
- 48505
- 48506
- 48507
- 48532
- 48550
- 48551
- 48552
- 48553
- 48556
- 48557