Arco, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Arco, a city in Lincoln County, Minnesota.
Today
70°F
Partly Sunny
Partly sunny. High near 70, with temperatures falling to around 67 in the afternoon. North northwest wind 5 to 10 mph.
7-day forecast for Arco
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 70°F | Partly Sunny | 5 to 10 mph NNW | 7% |
| Tonight | 52°F | Partly Cloudy | 5 mph WSW | 1% |
| Wednesday | 73°F | Sunny | 5 to 10 mph SW | 0% |
| Wednesday Night | 57°F | Mostly Clear | 5 to 15 mph SSW | 0% |
| Thursday | 79°F | Sunny | 15 to 20 mph SW | 2% |
| Thursday Night | 62°F | Mostly Clear | 10 to 15 mph SSW | 5% |
| Friday | 82°F | Sunny | 10 to 15 mph SSW | 12% |
| Friday Night | 62°F | Mostly Clear | 5 to 10 mph SSW | 12% |
| Saturday | 82°F | Sunny | 5 to 15 mph S | 9% |
| Saturday Night | 64°F | Chance Showers And Thunderstorms | 10 to 15 mph SE | 25% |
| Sunday | 80°F | Chance Showers And Thunderstorms then Mostly Sunny | 10 to 15 mph ESE | 25% |
| Sunday Night | 63°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 10 mph E | 24% |
| Monday | 79°F | Slight Chance Showers And Thunderstorms | 10 to 15 mph ENE | 24% |
| Monday Night | 62°F | Slight Chance Showers And Thunderstorms | 10 to 15 mph NE | 17% |
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 Aug 4, 2026.