Bertha, MN Weather & Growing Conditions
This Afternoon
53°F
Drizzle
Drizzle. Cloudy. High near 53, with temperatures falling to around 48 in the afternoon. North northwest wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 53°F | Drizzle | 15 mph NNW | 85% |
| Tonight | 43°F | Rain | 15 mph N | 96% |
| Wednesday | 47°F | Rain | 15 to 20 mph N | 94% |
| Wednesday Night | 36°F | Light Rain Likely then Mostly Cloudy | 15 to 20 mph N | 60% |
| Thursday | 41°F | Partly Sunny | 10 to 15 mph N | 2% |
| Thursday Night | 28°F | Mostly Cloudy | 0 to 5 mph NE | 0% |
| Friday | 41°F | Mostly Sunny | 0 to 5 mph SSE | 0% |
| Friday Night | 28°F | Partly Cloudy | 0 to 5 mph SSW | 0% |
| Saturday | 50°F | Mostly Sunny | 5 to 10 mph SW | 4% |
| Saturday Night | 34°F | Partly Cloudy | 5 to 10 mph W | 12% |
| Sunday | 52°F | Mostly Sunny | 5 to 10 mph W | 5% |
| Sunday Night | 35°F | Partly Cloudy | 5 mph SSW | 1% |
| Monday | 53°F | Mostly Sunny | 10 to 15 mph WSW | 1% |
| Monday Night | 35°F | Mostly Clear | 5 to 10 mph WNW | 0% |
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 Nov 4, 2026.