Atlanta, Michigan climate: Normal weather by month, frost dates and records
Atlanta's normal year runs from 10°F January nights to 80°F July afternoons, with 32.0 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 6.3°C, January lows of −12°C, July highs of 27°C, 812 mm of precipitation a year.
- NOAA stationAtlanta
- Station IDUSC00200342
- Location45.00°N 84.14°W
- Elevation879 ft (268 m)
- Population (census place)645
On October 22, the normal high in Atlanta is 54°F and the normal low 34°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Atlanta.
- Jan 26° 10°
- Feb 29° 9°
- Mar 40° 16°
- Apr 53° 29°
- May 67° 40°
- Jun 76° 50°
- Jul 80° 55°
- Aug 79° 53°
- Sep 71° 45°
- Oct 57° 36°
- Nov 43° 28°
- Dec 32° 19°
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 Atlanta each month?
July is the warmest month, with normal highs of 80°F; January the coldest, with normal lows of 10°F. The most precipitation falls in October (3.45 in), the least in February (1.53 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 26°F | 10°F | 18.1°F | 1.88 | – | <1 | 30 | 9 h 10 min |
| February | 29°F | 9°F | 19.3°F | 1.53 | – | <1 | 28 | 10 h 20 min |
| March | 40°F | 16°F | 28.0°F | 1.83 | – | <1 | 29 | 11 h 50 min |
| April | 53°F | 29°F | 40.7°F | 3.04 | – | <1 | 24 | 13 h 30 min |
| May | 67°F | 40°F | 53.2°F | 3.01 | – | 1 | 10 | 14 h 50 min |
| June | 76°F | 50°F | 63.1°F | 3.22 | – | 2 | 1 | 15 h 40 min |
| July | 80°F | 55°F | 67.6°F | 3.33 | – | 4 | <1 | 15 h 20 min |
| August | 79°F | 53°F | 65.8°F | 3.23 | – | 2 | <1 | 14 h 10 min |
| September | 71°F | 45°F | 58.0°F | 3.28 | – | 1 | 3 | 12 h 40 min |
| October | 57°F | 36°F | 46.3°F | 3.45 | – | <1 | 15 | 11 h |
| November | 43°F | 28°F | 35.3°F | 2.24 | – | <1 | 24 | 9 h 40 min |
| December | 32°F | 19°F | 25.7°F | 1.92 | – | <1 | 29 | 8 h 50 min |
| Year (annual) | 54°F | 33°F | 43.4°F | 31.96 | – | 9 | 193 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | −3°C | −12°C | −7.7°C | 48 mm |
| February | −1°C | −13°C | −7.1°C | 39 mm |
| March | 4°C | −9°C | −2.2°C | 46 mm |
| April | 12°C | −2°C | 4.8°C | 77 mm |
| May | 19°C | 4°C | 11.8°C | 76 mm |
| June | 25°C | 10°C | 17.3°C | 82 mm |
| July | 27°C | 13°C | 19.8°C | 85 mm |
| August | 26°C | 12°C | 18.8°C | 82 mm |
| September | 22°C | 7°C | 14.4°C | 83 mm |
| October | 14°C | 2°C | 7.9°C | 88 mm |
| November | 6°C | −2°C | 1.8°C | 57 mm |
| December | 0°C | −7°C | −3.5°C | 49 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Vanderbilt (11 mi ENE) (19 miles away), gets 84 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00200342; 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 Atlanta?
Normal highs sit between 65°F and 85°F in May, June, July, August and September.
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 USC00200342.
When is the last frost in Atlanta?
In Atlanta, the last spring frost (32°F) comes after May 22 in half of years and after June 5 in one year in ten; the first autumn frost comes before September 27 in half of years and before September 12 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 221 year in 10 after June 5; 9 in 10 after May 5
- First autumn frost, half of years before
- September 271 year in 10 before September 12; 9 in 10 before October 11
NOAA puts the median frost-free season at 127 days, and the season without a hard freeze (28°F) at 155 days.
A hard freeze (28°F) comes after May 8 in half of springs and before October 11 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Atlanta in zone 5a in ZIP code 49709, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Atlanta's NOAA station is in zone 5a: the coldest night of a typical year reaches −19°F (15 complete years).
Frost dates for every NOAA station in Michigan · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00200342; 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.
How hot and how cold does it get in Atlanta?
In a normal year in Atlanta, 9 days a year reach 90°F and 193 nights fall to 32°F or colder.
- Days at 90°F or more
- 9a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 193a normal year
- Days that stay below freezing
- 73high of 32°F or less
Source: NOAA NCEI 1991-2020 annual normals, station USC00200342.
How sunny is Atlanta?
Over a year 69% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Atlanta, 3.5 kWh per square metre a day. July is the sunniest month (79%) and December the cloudiest (48%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 51% | 1.2 |
| February | 58% | 2.0 |
| March | 67% | 3.4 |
| April | 68% | 4.6 |
| May | 71% | 5.5 |
| June | 74% | 6.1 |
| July | 79% | 6.1 |
| August | 78% | 5.2 |
| September | 74% | 3.9 |
| October | 61% | 2.3 |
| November | 53% | 1.3 |
| December | 48% | 0.9 |
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 Atlanta need?
A normal year in Atlanta brings 8,158 heating degree days, 52% more than the median U.S. place (5,373), and 332 cooling degree days, 63% fewer than the median (908). Eight months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 1,970 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,454 | 0 |
| February | 1,280 | 0 |
| March | 1,149 | 0 |
| April | 729 | 0 |
| May | 381 | 15 |
| June | 123 | 66 |
| July | 49 | 129 |
| August | 64 | 90 |
| September | 238 | 28 |
| October | 581 | 3 |
| November | 893 | 0 |
| December | 1,218 | 0 |
| Year (annual) | 8,158 | 332 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00200342. 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 Atlanta been warmer than normal lately?
2025 averaged 43.7°F, 0.3°F above the 1991-2020 normal of 43.4°F. 4 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 45.1°F | +1.7°F | – |
| 2022 | 42.7°F | −0.7°F | 28.46 |
| 2023 | 45.0°F | +1.6°F | – |
| 2024 | 46.4°F | +3.0°F | – |
| 2025 | 43.7°F | +0.3°F | – |
Source: observed years: ACIS, station USC00200342. A year counts only with all twelve months complete.
How does Atlanta's climate compare?
Atlanta is warmer than 29 of the other 139 places with their own NOAA record in Michigan, and wetter than 22. Across the 7,247 U.S. stations with normals, its annual mean of 43.4°F is warmer than 13%.
In the Köppen classification computed from these normals, Atlanta 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 Atlanta 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.
- Lewiston, MI980 people · 12 mi SW
- Hillman, MI660 people · 13 mi E
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 Atlanta's other NOAA stations record?
One more NOAA station keeps 1991-2020 normals in or near Atlanta. This page uses Atlanta; the other differs by site and elevation:
| Station | From this station | Elevation | Year | Jan low | Jul high | Precip. | Snow | Last frost |
|---|---|---|---|---|---|---|---|---|
| Atlanta (5 mi WNW) USC00200343 | 5 mi W | 1,180 ft | 43.5°F | 12°F | 79°F | – | – | May 11 |
Source: NOAA NCEI 1991-2020 normals for each station. Last frost: the median last spring date of 32°F.
Questions about Atlanta's climate
What is the coldest month in Atlanta?
January, with a normal high of 26°F and a normal low of 10°F. The warmest is July (80°F by day, 55°F at night).
Does it snow in Atlanta?
Yes. NOAA publishes no 1991-2020 snowfall normal for Atlanta's NOAA station; the nearest record that keeps one, Vanderbilt (11 mi ENE) (19 miles away), records 84 inches of snow in a normal year.
What is the rainiest month in Atlanta?
October, with 3.45 in of precipitation in a normal year; the driest is February with 1.53 in.
What plant hardiness zone is Atlanta in?
The USDA's 2023 map puts Atlanta in zone 5a in ZIP code 49709, the nearest ZIP area. By the same method at Atlanta's NOAA station, the coldest night of a typical year reaches −19°F (15 years, 1991-2020): zone 5a.
How late can frost come in Atlanta?
In half of years the last 32°F night comes after May 22; in one year in ten it comes after June 5. Waiting until June 5 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Michigan climateThe statewide normals and every place in the state
- Vanderbilt (11 mi ENE), MI19 miles from this station, 41.7°F a year
- Mio, MI24 miles from this station, 44.9°F a year
- Gaylord, MI27 miles from this station, 42.7°F a year
- Onaway, MI29 miles from this station, 44.4°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made