Bertha, MN Weather & Growing Conditions
This Afternoon
59°F
Rain Showers Likely
Rain showers likely. Mostly cloudy, with a high near 59. East southeast wind around 15 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 59°F | Rain Showers Likely | 15 mph ESE | 62% |
| Tonight | 54°F | Rain Showers Likely | 10 to 15 mph E | 55% |
| Saturday | 64°F | Mostly Cloudy | 10 mph NE | 11% |
| Saturday Night | 52°F | Partly Cloudy | 5 to 10 mph NE | 0% |
| Sunday | 64°F | Mostly Cloudy | 10 mph NE | 0% |
| Sunday Night | 45°F | Mostly Cloudy | 5 to 10 mph E | 2% |
| Monday | 62°F | Partly Sunny | 5 to 10 mph E | 2% |
| Monday Night | 42°F | Partly Cloudy | 5 mph ESE | 1% |
| Tuesday | 63°F | Mostly Sunny | 5 to 10 mph ESE | 0% |
| Tuesday Night | 43°F | Mostly Clear | 5 mph SE | 1% |
| Wednesday | 64°F | Mostly Sunny | 5 to 10 mph SSE | 3% |
| Wednesday Night | 48°F | Partly Cloudy then Slight Chance Rain Showers | 5 mph SSE | 16% |
| Thursday | 68°F | Slight Chance Rain Showers then Partly Sunny | 5 to 10 mph S | 16% |
| Thursday Night | 51°F | Partly Cloudy | 0 to 5 mph SSE | 7% |
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 Sep 18, 2026.