Eaton Rapids, Michigan climate: Normal weather by month, frost dates and records
Eaton Rapids's normal year runs from 16°F January nights to 82°F July afternoons, with 36.3 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 8.9°C, January lows of −9°C, July highs of 28°C, 923 mm of precipitation a year.
- NOAA stationEaton Rapids
- Station IDUSC00202437
- Location42.52°N 84.65°W
- Elevation870 ft (265 m)
- From the centerunder 1 mile
- Population5,184
On October 23, the normal high in Eaton Rapids is 57°F and the normal low 37°F, and the chance of measurable rain or snow is 42%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Eaton Rapids.
- Jan 31° 16°
- Feb 34° 16°
- Mar 45° 25°
- Apr 57° 36°
- May 69° 47°
- Jun 79° 58°
- Jul 82° 61°
- Aug 80° 59°
- Sep 74° 51°
- Oct 61° 40°
- Nov 47° 30°
- Dec 36° 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 Eaton Rapids 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 June (4.23 in), the least in February (1.83 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 31°F | 16°F | 23.1°F | 2.28 | 15 | <1 | 29 | 9 h 20 min |
| February | 34°F | 16°F | 25.0°F | 1.83 | 10 | <1 | 26 | 10 h 30 min |
| March | 45°F | 25°F | 34.7°F | 2.25 | 11 | <1 | 23 | 11 h 50 min |
| April | 57°F | 36°F | 46.3°F | 3.12 | 12 | <1 | 10 | 13 h 20 min |
| May | 69°F | 47°F | 58.1°F | 4.17 | 14 | 1 | 1 | 14 h 30 min |
| June | 79°F | 58°F | 68.1°F | 4.23 | 11 | 2 | <1 | 15 h 20 min |
| July | 82°F | 61°F | 71.5°F | 3.13 | 11 | 6 | <1 | 15 h |
| August | 80°F | 59°F | 69.6°F | 3.91 | 11 | 1 | <1 | 14 h |
| September | 74°F | 51°F | 62.3°F | 3.13 | 11 | 1 | <1 | 12 h 30 min |
| October | 61°F | 40°F | 50.5°F | 3.64 | 13 | <1 | 5 | 11 h 10 min |
| November | 47°F | 30°F | 38.6°F | 2.64 | 12 | <1 | 19 | 9 h 50 min |
| December | 36°F | 23°F | 29.4°F | 2.01 | 13 | <1 | 27 | 9 h 10 min |
| Year (annual) | 58°F | 38°F | 48.1°F | 36.34 | 143 | 10 | 140 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | −1°C | −9°C | −4.9°C | 58 mm |
| February | 1°C | −9°C | −3.9°C | 46 mm |
| March | 7°C | −4°C | 1.5°C | 57 mm |
| April | 14°C | 2°C | 7.9°C | 79 mm |
| May | 21°C | 8°C | 14.5°C | 106 mm |
| June | 26°C | 14°C | 20.1°C | 107 mm |
| July | 28°C | 16°C | 21.9°C | 80 mm |
| August | 27°C | 15°C | 20.9°C | 99 mm |
| September | 23°C | 10°C | 16.8°C | 80 mm |
| October | 16°C | 4°C | 10.3°C | 92 mm |
| November | 8°C | −1°C | 3.7°C | 67 mm |
| December | 2°C | −5°C | −1.4°C | 51 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Charlotte (9 miles away), gets 38 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00202437; 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 Eaton Rapids?
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 (11).
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 USC00202437.
When is the last frost in Eaton Rapids?
In Eaton Rapids, the last spring frost (32°F) comes after April 30 in half of years and after May 16 in one year in ten; the first autumn frost comes before October 14 in half of years and before October 1 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
- April 301 year in 10 after May 16; 9 in 10 after April 16
- First autumn frost, half of years before
- October 141 year in 10 before October 1; 9 in 10 before October 29
NOAA puts the median frost-free season at 165 days, and the season without a hard freeze (28°F) at 191 days.
A hard freeze (28°F) comes after April 19 in half of springs and before October 27 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Eaton Rapids in zone 6a in ZIP code 48827, the nearest ZIP area.
Frost dates for every NOAA station in Michigan · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00202437; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. 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 Eaton Rapids?
In a normal year in Eaton Rapids, 10 days a year reach 90°F, 140 nights fall to 32°F or colder and 143 days bring measurable precipitation.
- Days at 90°F or more
- 10a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 140a normal year
- Days that stay below freezing
- 46high of 32°F or less
- Days with 0.01 inch of precipitation
- 143a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USC00202437.
How sunny is Eaton Rapids?
Over a year 71% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Eaton Rapids, 3.8 kWh per square metre a day. July is the sunniest month (80%) and December the cloudiest (52%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 56% | 1.5 |
| February | 62% | 2.4 |
| March | 67% | 3.6 |
| April | 68% | 4.6 |
| May | 70% | 5.4 |
| June | 76% | 6.2 |
| July | 80% | 6.3 |
| August | 78% | 5.4 |
| September | 77% | 4.3 |
| October | 67% | 2.7 |
| November | 62% | 1.8 |
| December | 52% | 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 Eaton Rapids need?
A normal year in Eaton Rapids brings 6,736 heating degree days, 25% more than the median U.S. place (5,373), and 606 cooling degree days, 33% 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 2,678 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,300 | 0 |
| February | 1,120 | 0 |
| March | 942 | 1 |
| April | 564 | 2 |
| May | 246 | 32 |
| June | 38 | 131 |
| July | 12 | 213 |
| August | 22 | 163 |
| September | 141 | 59 |
| October | 456 | 5 |
| November | 792 | 0 |
| December | 1,104 | 0 |
| Year (annual) | 6,736 | 606 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00202437. 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 Eaton Rapids been warmer than normal lately?
2025 averaged 49.0°F, 0.9°F above the 1991-2020 normal of 48.1°F. 4 of the 4 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 49.9°F | +1.8°F | 35.14 |
| 2023 | 50.3°F | +2.2°F | 38.71 |
| 2024 | 51.9°F | +3.8°F | 38.03 |
| 2025 | 49.0°F | +0.9°F | 35.34 |
Source: observed years: ACIS, station USC00202437. A year counts only with all twelve months complete.
How does Eaton Rapids's climate compare?
Eaton Rapids is warmer than 101 of the other 139 places with their own NOAA record in Michigan, and wetter than 100. Across the 7,247 U.S. stations with normals, its annual mean of 48.1°F is warmer than 32%.
In the Köppen classification computed from these normals, Eaton Rapids 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 Eaton Rapids 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.
- Leslie, MI1,936 people · 12 mi SE
- Springport, MI823 people · 10 mi S
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 Eaton Rapids's climate
What is the coldest month in Eaton Rapids?
January, with a normal high of 31°F and a normal low of 16°F. The warmest is July (82°F by day, 61°F at night).
Does it snow in Eaton Rapids?
Yes. NOAA publishes no 1991-2020 snowfall normal for Eaton Rapids's NOAA station; the nearest record that keeps one, Charlotte (9 miles away), records 38 inches of snow in a normal year.
What is the rainiest month in Eaton Rapids?
June, with 4.23 in of precipitation in a normal year; the driest is February with 1.83 in.
What plant hardiness zone is Eaton Rapids in?
The USDA's 2023 map puts Eaton Rapids in zone 6a in ZIP code 48827, the nearest ZIP area.
How late can frost come in Eaton Rapids?
In half of years the last 32°F night comes after April 30; in one year in ten it comes after May 16. Waiting until May 16 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Michigan climateThe statewide normals and every place in the state
- Charlotte, MI9 miles from this station, 47.3°F a year
- East Lansing, MI14 miles from this station, 49.2°F a year
- Lansing, MI19 miles from this station, 48.6°F a year
- Jackson, MI20 miles from this station, 48.9°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made