Delavan, MN Weather & Growing Conditions
Overnight
61°F
Patchy Fog
Patchy fog and a chance of showers and thunderstorms before 4am, then patchy fog and a chance of showers and thunderstorms. Cloudy. Low around 61, with temperatures rising to around 64 overnight. East wind 5 to 10 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 61°F | Patchy Fog | 5 to 10 mph E | 44% |
| Saturday | 67°F | Patchy Fog | 5 to 10 mph NNE | 28% |
| Saturday Night | 55°F | Slight Chance Drizzle | 10 mph NNE | 15% |
| Sunday | 66°F | Mostly Cloudy | 10 to 15 mph NE | 9% |
| Sunday Night | 51°F | Mostly Cloudy then Slight Chance Rain Showers | 10 to 15 mph ENE | 21% |
| Monday | 61°F | Chance Rain Showers | 10 mph ENE | 42% |
| Monday Night | 47°F | Chance Rain Showers | 5 to 10 mph ENE | 42% |
| Tuesday | 62°F | Partly Sunny | 5 to 10 mph E | 6% |
| Tuesday Night | 45°F | Partly Cloudy | 0 to 5 mph ESE | 1% |
| Wednesday | 65°F | Sunny | 5 mph SE | 1% |
| Wednesday Night | 49°F | Partly Cloudy | 0 to 5 mph SSE | 8% |
| Thursday | 68°F | Slight Chance Rain Showers | 0 to 5 mph SSE | 16% |
| Thursday Night | 52°F | Partly Cloudy | 0 to 5 mph SSE | 6% |
| Friday | 69°F | Mostly Sunny | 0 to 10 mph SE | 7% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Delavan, MN
Last spring frost
Apr 27
First fall frost
Oct 10
Growing season
166 days
Hardiness zone
5a
Explore more for Delavan, MN: full frost dates · planting calendar · Minnesota frost dates
Climate data from the nearest NOAA station, Winnebago, Mn (7.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.