Bertha, MN Weather & Growing Conditions
Today
71°F
Patchy Smoke then Mostly Sunny
Patchy smoke before 9am. Mostly sunny, with a high near 71. West northwest wind around 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 71°F | Patchy Smoke then Mostly Sunny | 10 mph WNW | 0% |
| Tonight | 51°F | Mostly Clear | 5 to 10 mph WSW | 0% |
| Wednesday | 77°F | Sunny | 5 to 10 mph SW | 0% |
| Wednesday Night | 59°F | Partly Cloudy | 5 to 15 mph SW | 5% |
| Thursday | 83°F | Sunny | 10 to 15 mph SW | 5% |
| Thursday Night | 62°F | Mostly Clear | 10 to 15 mph SSW | 8% |
| Friday | 85°F | Sunny | 10 to 15 mph SW | 8% |
| Friday Night | 59°F | Slight Chance Showers And Thunderstorms | 0 to 10 mph NNE | 15% |
| Saturday | 84°F | Slight Chance Rain Showers | 0 to 10 mph SW | 15% |
| Saturday Night | 60°F | Chance Showers And Thunderstorms | 5 to 10 mph ENE | 34% |
| Sunday | 81°F | Chance Rain Showers then Sunny | 5 to 10 mph NE | 27% |
| Sunday Night | 60°F | Partly Cloudy then Slight Chance Rain Showers | 5 to 10 mph NE | 15% |
| Monday | 80°F | Slight Chance Rain Showers | 5 to 10 mph NE | 15% |
| Monday Night | 59°F | Slight Chance Rain Showers | 5 to 10 mph NNE | 16% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Bertha, MN
Last spring frost
May 10
First fall frost
Sep 30
Growing season
141 days
Hardiness zone
4a
Explore more for Bertha, MN: full frost dates · planting calendar · Minnesota frost dates
Climate data from the nearest NOAA station, Wadena 3 S, Mn (11.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.