Flint, Michigan climate: Normal weather by month, frost dates and records
Flint's normal year runs from 16°F January nights to 82°F July afternoons, with 32.0 inches of precipitation and 52 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 8.7°C, January lows of −9°C, July highs of 28°C, 812 mm of precipitation a year.
- NOAA stationFlint Weather Station
- Station IDUSW00014826
- Location42.97°N 83.75°W
- Elevation770 ft (235 m)
- From the center5 miles
- Population79,735
On October 23, the normal high in Flint is 57°F and the normal low 38°F, and the chance of measurable rain or snow is 38%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Flint.
- 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.
What is the weather like in Flint each month?
July is the warmest month, with normal highs of 82°F; January the coldest, with normal lows of 16°F. The most precipitation falls in May (3.68 in), the least in February (1.68 in).
Each month has its own page with the day-by-day normals, the month's records and its recent years:
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 30°F | 16°F | 23.0°F | 1.99 | 15.1 | 14 | <1 | 28 | 9 h 20 min |
| February | 33°F | 17°F | 24.7°F | 1.68 | 13.0 | 11 | <1 | 26 | 10 h 30 min |
| March | 43°F | 25°F | 34.2°F | 1.97 | 6.6 | 11 | <1 | 24 | 11 h 50 min |
| April | 57°F | 35°F | 46.0°F | 3.13 | 2.4 | 13 | <1 | 12 | 13 h 20 min |
| May | 69°F | 46°F | 57.4°F | 3.68 | 0.0 | 12 | <1 | 1 | 14 h 40 min |
| June | 78°F | 56°F | 67.1°F | 3.12 | 0.0 | 11 | 3 | <1 | 15 h 20 min |
| July | 82°F | 60°F | 70.9°F | 3.41 | 0.0 | 10 | 5 | <1 | 15 h |
| August | 80°F | 58°F | 69.1°F | 3.16 | 0.0 | 10 | 2 | <1 | 14 h |
| September | 73°F | 50°F | 61.7°F | 2.90 | 0.0 | 10 | 1 | <1 | 12 h 30 min |
| October | 60°F | 40°F | 50.2°F | 2.77 | 0.3 | 12 | <1 | 6 | 11 h 10 min |
| November | 47°F | 31°F | 38.8°F | 2.27 | 3.3 | 12 | <1 | 18 | 9 h 50 min |
| December | 35°F | 23°F | 28.7°F | 1.89 | 11.4 | 14 | <1 | 26 | 9 h |
| Year (annual) | 57°F | 38°F | 47.7°F | 31.97 | 52.1 | 138 | 11 | 141 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | −1°C | −9°C | −5.0°C | 51 mm | 38 cm |
| February | 0°C | −8°C | −4.1°C | 43 mm | 33 cm |
| March | 6°C | −4°C | 1.2°C | 50 mm | 17 cm |
| April | 14°C | 2°C | 7.8°C | 80 mm | 6 cm |
| May | 21°C | 8°C | 14.1°C | 93 mm | 0 cm |
| June | 26°C | 13°C | 19.5°C | 79 mm | 0 cm |
| July | 28°C | 15°C | 21.6°C | 87 mm | 0 cm |
| August | 27°C | 15°C | 20.6°C | 80 mm | 0 cm |
| September | 23°C | 10°C | 16.5°C | 74 mm | 0 cm |
| October | 16°C | 5°C | 10.1°C | 70 mm | 1 cm |
| November | 8°C | −1°C | 3.8°C | 58 mm | 8 cm |
| December | 2°C | −5°C | −1.8°C | 48 mm | 29 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00014826; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
When is the best weather to visit Flint?
Normal highs sit between 65°F and 85°F in May, June, July, August and September. Of those, July has the fewest days with rain (10).
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USW00014826.
When is the last frost in Flint?
In Flint, the last spring frost (32°F) comes after May 6 in half of years and after May 23 in one year in ten; the first autumn frost comes before October 10 in half of years and before September 26 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- May 61 year in 10 after May 23; 9 in 10 after April 21
- First autumn frost, half of years before
- October 101 year in 10 before September 26; 9 in 10 before October 25
NOAA puts the median frost-free season at 155 days, and the season without a hard freeze (28°F) at 179 days.
A hard freeze (28°F) comes after April 26 in half of springs and before October 23 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Flint in zone 6a across its 6 ZIP code areas (6a in 48503, the largest). By the map's own method, the average of each year's coldest night over 1991-2020, Flint's NOAA station is in zone 5b: the coldest night of a typical year reaches −10°F (30 complete years); the map interpolates between stations and terrain, so the station and the ZIP area can differ by half a zone.
Frost dates for every NOAA station in Michigan · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USW00014826; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
What hardiness zone is each Flint ZIP code in?
The USDA's 2023 map gives each ZIP code area one zone. Flint's 6 ZIP code areas are all in zone 6a. Each ZIP's frost dates are in the frost tool.
Source: USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; ZIP areas in the place: Census Bureau 2020 ZCTA-to-place relationship file. A ZIP area counts when at least a tenth of its land (and 0.5 km²) lies in the place.
How hot and how cold does it get in Flint?
In a normal year in Flint, 11 days a year reach 90°F, 141 nights fall to 32°F or colder and 138 days bring measurable precipitation.
- Days at 90°F or more
- 11a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 141a normal year
- Days that stay below freezing
- 51high of 32°F or less
- Days with 0.01 inch of precipitation
- 138a normal year
- Days with 1 inch of snow or more
- 16a normal year
The highest temperature in Flint's official record (kept by the National Weather Service since 1921) is 108°F, on July 13, 1936; the lowest is −25°F, on January 18, 1976.
The wettest calendar year on that record is 1975, with 45.38 in; the snowiest season is 2017–18, with 85.3 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USW00014826; records: ACIS (NOAA Regional Climate Centers), NWS threaded record FNTthr. Records use complete months only; a month missing more than three days is left out.
How humid and windy is Flint, and how clear are its skies?
The summer (June-August) dew point averages 59°F. The muggiest month is July, with an average dew point of 60°F; the driest air comes in January (17°F). March is the windiest month (10.1 mph on average), and June has the most clear or nearly clear hours (62%).
| Month | Dew point | Humidity | Afternoon humidity | Wind | Clear or few clouds | Overcast |
|---|---|---|---|---|---|---|
| January | 17°F | 75% | 66% | 9.9 mph | 34% | 51% |
| February | 20°F | 72% | 60% | 10.0 mph | 40% | 46% |
| March | 30°F | 65% | 50% | 10.1 mph | 45% | 38% |
| April | 39°F | 59% | 45% | 9.6 mph | 52% | 28% |
| May | 51°F | 66% | 49% | 8.1 mph | 55% | 22% |
| June | 59°F | 66% | 49% | 7.5 mph | 62% | 13% |
| July | 60°F | 70% | 51% | 6.7 mph | 60% | 12% |
| August | 59°F | 73% | 53% | 6.9 mph | 61% | 15% |
| September | 48°F | 73% | 53% | 8.1 mph | 55% | 24% |
| October | 36°F | 72% | 57% | 9.3 mph | 43% | 41% |
| November | 28°F | 76% | 67% | 9.8 mph | 31% | 55% |
| December | 21°F | 78% | 70% | 10.0 mph | 28% | 58% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00014826. Monthly averages of all hours; afternoon humidity at 3 p.m. local standard time; sky as the share of hours NOAA's observations rate clear or few clouds (a dash where NOAA publishes no sky value).
How sunny is Flint?
Over a year 71% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Flint, 3.8 kWh per square metre a day. July is the sunniest month (80%) and December the cloudiest (54%). Among the 459 U.S. places of 50,000 or more, that ranks tied 416th (with 11 others) in sunshine.
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 59% | 1.6 |
| February | 62% | 2.4 |
| March | 66% | 3.5 |
| April | 68% | 4.7 |
| May | 70% | 5.5 |
| June | 76% | 6.2 |
| July | 80% | 6.2 |
| August | 78% | 5.3 |
| September | 77% | 4.3 |
| October | 68% | 2.8 |
| November | 63% | 1.8 |
| December | 54% | 1.2 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How much heating and cooling does Flint need?
A normal year in Flint brings 6,851 heating degree days, 28% more than the median U.S. place (5,373), and 565 cooling degree days, 38% fewer than the median (908). Seven months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 2,586 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,303 | 0 |
| February | 1,127 | 0 |
| March | 956 | 1 |
| April | 572 | 2 |
| May | 268 | 34 |
| June | 58 | 119 |
| July | 13 | 196 |
| August | 25 | 152 |
| September | 152 | 55 |
| October | 465 | 6 |
| November | 786 | 0 |
| December | 1,125 | 0 |
| Year (annual) | 6,851 | 565 |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00014826. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
Has Flint been warmer than normal lately?
2025 averaged 48.5°F, 0.8°F above the 1991-2020 normal of 47.7°F. 5 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 50.7°F | +3.0°F | 37.65 | 57.8 |
| 2022 | 48.4°F | +0.7°F | 23.44 | 60.3 |
| 2023 | 50.3°F | +2.6°F | 34.66 | 35.7 |
| 2024 | 51.9°F | +4.2°F | 33.15 | 40.0 |
| 2025 | 48.5°F | +0.8°F | 29.08 | 46.2 |
Over 69 complete years from 1950 to 2025, the station's annual mean temperature rose at a fitted 4.6°F per century (+0.25°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USW00014826; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Flint's climate compare?
Flint is warmer than 90 of the other 139 places with their own NOAA record in Michigan, and wetter than 23. Across the 7,247 U.S. stations with normals, its annual mean of 47.7°F is warmer than 31%.
In the Köppen classification computed from these normals, Flint is Dfb: continental, no dry season, warm summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near Flint share this climate record?
2 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- Flushing, MI8,224 people · 8 mi NW
- Swartz Creek, MI5,848 people · 3 mi W
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
What do Flint's other NOAA stations record?
One more NOAA station keeps 1991-2020 normals in or near Flint. This page uses Flint Weather Station; the other differs by site and elevation:
| Station | From the center | Elevation | Year | Jan low | Jul high | Precip. | Snow | Last frost |
|---|---|---|---|---|---|---|---|---|
| Flint (7 mi W) USC00202851 | 4 mi W | 679 ft | 47.5°F | 16°F | 82°F | 32.9 | 40 | May 3 |
Source: NOAA NCEI 1991-2020 normals for each station. Last frost: the median last spring date of 32°F.
Questions about Flint's climate
What is the coldest month in Flint?
January, with a normal high of 30°F and a normal low of 16°F. The warmest is July (82°F by day, 60°F at night).
Does it snow in Flint?
Yes: 52 inches in a normal year, falling on 47 days with 0.1 inch or more, the most in January (15.1 inches).
What is the rainiest month in Flint?
May, with 3.68 in of precipitation in a normal year; the driest is February with 1.68 in.
What plant hardiness zone is Flint in?
The USDA's 2023 map puts Flint in zone 6a across its 6 ZIP code areas (6a in 48503, the largest). By the same method at Flint's NOAA station, the coldest night of a typical year reaches −10°F (30 years, 1991-2020): zone 5b.
How late can frost come in Flint?
In half of years the last 32°F night comes after May 6; in one year in ten it comes after May 23. Waiting until May 23 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Flint in OctoberThis month day by day, its records and recent years
- Michigan climateThe statewide normals and every place in the state
- Burton, MI11 miles from this station, 47.2°F a year
- Linden, MI11 miles from this station, 46.8°F a year
- Durand, MI12 miles from this station, 47.7°F a year
- Goodrich, MI12 miles from this station, 47.5°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made