Cosmos, MN Weather & Growing Conditions
Tonight
54°F
Drizzle Likely
Drizzle likely and patchy fog. Cloudy. Low around 54, with temperatures rising to around 57 overnight. East wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 54°F | Drizzle Likely | 10 to 15 mph E | 36% |
| Saturday | 63°F | Cloudy | 10 mph NE | 21% |
| Saturday Night | 51°F | Mostly Cloudy | 5 to 10 mph NE | 5% |
| Sunday | 66°F | Partly Sunny | 10 to 15 mph NE | 2% |
| Sunday Night | 48°F | Cloudy | 10 mph ENE | 7% |
| Monday | 61°F | Mostly Cloudy | 10 mph ENE | 14% |
| Monday Night | 44°F | Mostly Cloudy | 5 mph ENE | 11% |
| Tuesday | 63°F | Mostly Sunny | 5 to 10 mph E | 2% |
| Tuesday Night | 44°F | Partly Cloudy | 0 to 5 mph ESE | 1% |
| Wednesday | 64°F | Mostly Sunny | 5 to 10 mph SE | 2% |
| Wednesday Night | 48°F | Partly Cloudy then Slight Chance Rain Showers | 0 to 5 mph SSE | 18% |
| Thursday | 68°F | Slight Chance Rain Showers | 0 to 10 mph SSE | 18% |
| Thursday Night | 51°F | Partly Cloudy | 0 to 5 mph SE | 7% |
| Friday | 69°F | Mostly Sunny | 0 to 10 mph SE | 9% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Cosmos, MN
Last spring frost
May 6
First fall frost
Oct 2
Growing season
147 days
Hardiness zone
4b
Explore more for Cosmos, MN: full frost dates · planting calendar · Minnesota frost dates
Climate data from the nearest NOAA station, Litchfield, Mn (14.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.