Arco, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Arco, a city in Lincoln County, Minnesota.
This Afternoon
49°F
Rain Showers
Rain showers. Cloudy. High near 49, with temperatures falling to around 42 in the afternoon. North northwest wind 20 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Arco
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 49°F | Rain Showers | 20 to 25 mph NNW | 100% |
| Tonight | 37°F | Rain Showers | 15 to 20 mph NNW | 100% |
| Wednesday | 43°F | Rain Showers | 20 mph NNW | 92% |
| Wednesday Night | 34°F | Rain Showers | 15 to 20 mph NNW | 81% |
| Thursday | 41°F | Slight Chance Rain Showers then Partly Sunny | 15 mph NNW | 15% |
| Thursday Night | 30°F | Mostly Cloudy | 5 to 15 mph N | 1% |
| Friday | 43°F | Partly Sunny | 5 mph SE | 0% |
| Friday Night | 30°F | Partly Cloudy | 5 mph SSW | 1% |
| Saturday | 53°F | Mostly Sunny | 5 to 15 mph WSW | 3% |
| Saturday Night | 35°F | Partly Cloudy | 10 mph W | 4% |
| Sunday | 56°F | Sunny | 10 mph WSW | 5% |
| Sunday Night | 38°F | Mostly Clear | 10 to 15 mph SW | 1% |
| Monday | 58°F | Mostly Sunny | 10 to 15 mph W | 0% |
| Monday Night | 37°F | Mostly Clear | 5 to 10 mph WNW | 0% |
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 Nov 4, 2026.