Greenville, Michigan climate: Normal weather by month, frost dates and records
Greenville's normal year runs from 13°F January nights to 84°F July afternoons, with 36.6 inches of precipitation and 73 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 8.3°C, January lows of −11°C, July highs of 29°C, 931 mm of precipitation a year.
- NOAA stationGreenville (2 mi NNE)
- Station IDUSC00203429
- Location43.20°N 85.24°W
- Elevation882 ft (269 m)
- From the center2 miles
- Population9,110
On October 23, the normal high in Greenville is 59°F and the normal low 35°F, and the chance of measurable rain or snow is 39%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Greenville.
- Jan 31° 13°
- Feb 34° 13°
- Mar 46° 22°
- Apr 59° 32°
- May 71° 44°
- Jun 80° 53°
- Jul 84° 56°
- Aug 82° 55°
- Sep 75° 48°
- Oct 62° 37°
- Nov 48° 27°
- Dec 36° 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 Greenville each month?
July is the warmest month, with normal highs of 84°F; January the coldest, with normal lows of 13°F. The most precipitation falls in May (4.05 in), the least in February (1.94 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 31°F | 13°F | 22.0°F | 2.23 | 20.3 | 15 | <1 | 30 | 9 h 20 min |
| February | 34°F | 13°F | 23.8°F | 1.94 | 16.5 | 12 | <1 | 27 | 10 h 30 min |
| March | 46°F | 22°F | 33.5°F | 2.43 | 9.4 | 11 | <1 | 26 | 11 h 50 min |
| April | 59°F | 32°F | 45.7°F | 3.90 | 2.5 | 12 | <1 | 15 | 13 h 20 min |
| May | 71°F | 44°F | 57.4°F | 4.05 | 0.0 | 12 | 1 | 3 | 14 h 40 min |
| June | 80°F | 53°F | 66.5°F | 3.62 | 0.0 | 10 | 3 | <1 | 15 h 20 min |
| July | 84°F | 56°F | 70.3°F | 3.05 | 0.0 | 9 | 5 | <1 | 15 h 10 min |
| August | 82°F | 55°F | 68.5°F | 3.50 | 0.0 | 10 | 3 | <1 | 14 h |
| September | 75°F | 48°F | 61.3°F | 3.04 | 0.0 | 10 | 1 | 1 | 12 h 30 min |
| October | 62°F | 37°F | 49.6°F | 3.54 | 0.4 | 12 | <1 | 9 | 11 h 10 min |
| November | 48°F | 27°F | 37.6°F | 2.98 | 5.0 | 13 | <1 | 21 | 9 h 50 min |
| December | 36°F | 19°F | 27.3°F | 2.37 | 18.8 | 14 | <1 | 29 | 9 h |
| Year (annual) | 59°F | 35°F | 46.9°F | 36.65 | 72.9 | 139 | 14 | 162 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 0°C | −11°C | −5.6°C | 57 mm | 52 cm |
| February | 1°C | −10°C | −4.6°C | 49 mm | 42 cm |
| March | 8°C | −6°C | 0.8°C | 62 mm | 24 cm |
| April | 15°C | 0°C | 7.6°C | 99 mm | 6 cm |
| May | 22°C | 7°C | 14.1°C | 103 mm | 0 cm |
| June | 27°C | 11°C | 19.2°C | 92 mm | 0 cm |
| July | 29°C | 13°C | 21.3°C | 77 mm | 0 cm |
| August | 28°C | 13°C | 20.3°C | 89 mm | 0 cm |
| September | 24°C | 9°C | 16.3°C | 77 mm | 0 cm |
| October | 17°C | 3°C | 9.8°C | 90 mm | 1 cm |
| November | 9°C | −3°C | 3.1°C | 76 mm | 13 cm |
| December | 2°C | −7°C | −2.6°C | 60 mm | 48 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00203429; 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 Greenville?
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 (9).
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 USC00203429.
When is the last frost in Greenville?
In Greenville, the last spring frost (32°F) comes after May 18 in half of years and after June 3 in one year in ten; the first autumn frost comes before September 28 in half of years and before September 15 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 181 year in 10 after June 3; 9 in 10 after April 29
- First autumn frost, half of years before
- September 281 year in 10 before September 15; 9 in 10 before October 10
NOAA puts the median frost-free season at 133 days, and the season without a hard freeze (28°F) at 155 days.
A hard freeze (28°F) comes after May 4 in half of springs and before October 7 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Greenville in zone 6a in ZIP code 48838, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Greenville's NOAA station is in zone 5b: the coldest night of a typical year reaches −12°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 USC00203429; 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 Greenville?
In a normal year in Greenville, 14 days a year reach 90°F, 162 nights fall to 32°F or colder and 139 days bring measurable precipitation.
- Days at 90°F or more
- 14a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 162a normal year
- Days that stay below freezing
- 51high of 32°F or less
- Days with 0.01 inch of precipitation
- 139a normal year
- Days with 1 inch of snow or more
- 23a normal year
The highest temperature in this station's record (since 1912) is 108°F, on July 13, 1936; the lowest is −26°F, on January 19, 1994.
The wettest calendar year on that record is 2019, with 48.53 in; the snowiest season is 2007–08, with 127.6 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00203429; records: ACIS (NOAA Regional Climate Centers), station USC00203429. Records use complete months only; a month missing more than three days is left out.
How sunny is Greenville?
Over a year 70% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Greenville, 3.7 kWh per square metre a day. July is the sunniest month (81%) and December the cloudiest (50%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 52% | 1.4 |
| February | 59% | 2.3 |
| March | 67% | 3.6 |
| April | 68% | 4.7 |
| May | 71% | 5.5 |
| June | 76% | 6.2 |
| July | 81% | 6.3 |
| August | 78% | 5.3 |
| September | 76% | 4.2 |
| October | 64% | 2.6 |
| November | 59% | 1.6 |
| December | 50% | 1.1 |
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 Greenville need?
A normal year in Greenville brings 7,060 heating degree days, 31% more than the median U.S. place (5,373), and 520 cooling degree days, 43% 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 2,506 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,331 | 0 |
| February | 1,155 | 0 |
| March | 977 | 1 |
| April | 583 | 3 |
| May | 268 | 33 |
| June | 63 | 108 |
| July | 16 | 180 |
| August | 32 | 140 |
| September | 161 | 51 |
| October | 484 | 5 |
| November | 822 | 0 |
| December | 1,169 | 0 |
| Year (annual) | 7,060 | 520 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00203429. 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 Greenville been warmer than normal lately?
2023 averaged 48.7°F, 1.8°F above the 1991-2020 normal of 46.9°F. 1 of the 2 complete years since 2022 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2022 | 46.6°F | −0.3°F | 38.21 | 56.7 |
| 2023 | 48.7°F | +1.8°F | 40.20 | 39.1 |
Over 83 complete years from 1920 to 2023, the station's annual mean temperature rose at a fitted 1.0°F per century (+0.05°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00203429; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Greenville's climate compare?
Greenville is warmer than 71 of the other 139 places with their own NOAA record in Michigan, and wetter than 102. Across the 7,247 U.S. stations with normals, its annual mean of 46.9°F is warmer than 27%.
In the Köppen classification computed from these normals, Greenville 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 Greenville share this climate record?
10 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.
- Belding, MI5,967 people · 7 mi S
- Howard City, MI1,924 people · 17 mi NW
- Stanton, MI1,393 people · 10 mi NE
- Edmore, MI1,277 people · 18 mi NE
- Lakeview, MI1,053 people · 17 mi N
- Crystal, MI966 people · 16 mi E
- Sheridan, MI722 people · 8 mi E
- Trufant, MI586 people · 10 mi NW
- McBride, MI222 people · 14 mi NE
- Pierson, MI207 people · 15 mi NW
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Greenville's climate
What is the coldest month in Greenville?
January, with a normal high of 31°F and a normal low of 13°F. The warmest is July (84°F by day, 56°F at night).
Does it snow in Greenville?
Yes: 73 inches in a normal year, falling on 49 days with 0.1 inch or more, the most in January (20.3 inches).
What is the rainiest month in Greenville?
May, with 4.05 in of precipitation in a normal year; the driest is February with 1.94 in.
What plant hardiness zone is Greenville in?
The USDA's 2023 map puts Greenville in zone 6a in ZIP code 48838, the nearest ZIP area. By the same method at Greenville's NOAA station, the coldest night of a typical year reaches −12°F (30 years, 1991-2020): zone 5b.
How late can frost come in Greenville?
In half of years the last 32°F night comes after May 18; in one year in ten it comes after June 3. Waiting until June 3 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Michigan climateThe statewide normals and every place in the state
- Ionia, MI19 miles from this station, 47.1°F a year
- East Grand Rapids, MI26 miles from this station, 48.0°F a year
- Grand Rapids, MI26 miles from this station, 49.3°F a year
- Kentwood, MI26 miles from this station, 48.3°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made