Buchanan, MI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Buchanan, a city in Berrien County, Michigan.
Overnight
62°F
Chance Rain Showers
A chance of rain showers after 2am. Mostly cloudy, with a low around 62. South wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 50%.
7-day forecast for Buchanan
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 62°F | Chance Rain Showers | 15 to 20 mph S | 45% |
| Wednesday | 68°F | Rain Showers Likely | 15 to 20 mph S | 56% |
| Wednesday Night | 48°F | Mostly Cloudy | 10 to 15 mph SW | 10% |
| Thursday | 57°F | Mostly Cloudy then Chance Rain Showers | 10 to 15 mph SW | 34% |
| Thursday Night | 42°F | Rain Showers Likely | 5 to 10 mph W | 60% |
| Friday | 52°F | Rain Showers Likely | 10 to 15 mph NW | 60% |
| Friday Night | 36°F | Chance Rain Showers | 5 to 15 mph N | 52% |
| Saturday | 51°F | Mostly Sunny | 5 to 10 mph NW | 10% |
| Saturday Night | 33°F | Partly Cloudy | 0 to 5 mph W | 3% |
| Sunday | 54°F | Sunny | 5 to 10 mph W | 11% |
| Sunday Night | 35°F | Mostly Clear | 5 to 10 mph W | 12% |
| Monday | 58°F | Sunny | 5 to 10 mph SW | 5% |
| Monday Night | 39°F | Mostly Clear | 5 to 10 mph SW | 1% |
| Tuesday | 58°F | Sunny | 5 to 10 mph W | 2% |
Forecast source: National Weather Service (api.weather.gov) for Buchanan (41.828, -86.366). Updated through the day.
Growing snapshot for Buchanan
Last spring frost
Apr 27
First fall frost
Oct 25
Growing season
180 days
Hardiness zone
6a
More local growing data for Buchanan: nearby ZIP 49107 weather · frost dates · planting calendar · Michigan frost dates
Nearby towns & communities
Baroda
Benton Harbor
Benton Heights
Berrien Springs
Bridgman
Coloma
Eau Claire
Fair Plain
Galien
Grand Beach
Lake Michigan Beach
Michiana
Millburg
New Buffalo
New Troy
Niles
Paw Paw Lake
Shoreham
Shorewood-Tower Hills-Harbert
St. Joseph
Stevensville
Three Oaks
Watervliet
Climate data from the nearest NOAA station, Niles, Mi (7.8 mi from Buchanan). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.