Arco, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Arco, a city in Lincoln County, Minnesota.
Overnight
56°F
Widespread Fog
Widespread fog and patchy drizzle. Cloudy, with a low around 56. North northeast wind around 5 mph. Chance of precipitation is 20%.
7-day forecast for Arco
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 56°F | Widespread Fog | 5 mph NNE | 16% |
| Saturday | 62°F | Widespread Fog | 5 to 15 mph NNE | 23% |
| Saturday Night | 51°F | Patchy Fog | 10 mph NNE | 11% |
| Sunday | 65°F | Mostly Cloudy | 10 to 15 mph NE | 11% |
| Sunday Night | 48°F | Mostly Cloudy then Slight Chance Rain Showers | 5 to 15 mph ENE | 21% |
| Monday | 61°F | Slight Chance Rain Showers | 5 to 10 mph ENE | 21% |
| Monday Night | 43°F | Partly Cloudy | 5 to 10 mph E | 9% |
| Tuesday | 63°F | Mostly Sunny | 5 to 10 mph ESE | 5% |
| Tuesday Night | 44°F | Mostly Clear | 5 to 10 mph SE | 1% |
| Wednesday | 67°F | Mostly Sunny | 5 to 15 mph SSE | 5% |
| Wednesday Night | 49°F | Partly Cloudy then Slight Chance Rain Showers | 10 mph SSE | 23% |
| Thursday | 69°F | Slight Chance Rain Showers | 10 to 15 mph SSE | 23% |
| Thursday Night | 52°F | Mostly Cloudy | 5 to 10 mph SSE | 12% |
| Friday | 71°F | Partly Sunny | 5 to 15 mph SSE | 12% |
Forecast source: National Weather Service (api.weather.gov) for Arco (44.385, -96.184). Updated through the day.
Growing snapshot for Arco
Last spring frost
May 5
First fall frost
Oct 3
Growing season
150 days
Hardiness zone
5a
More local growing data for Arco: nearby ZIP 56113 weather · frost dates · planting calendar · Minnesota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Marshall, Mn (18.4 mi from Arco). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.