Bertha, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Bertha, a city in Todd County, Minnesota.
This Afternoon
53°F
Drizzle
Drizzle and patchy fog. Cloudy, with a high near 53. North northwest wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 80%.
7-day forecast for Bertha
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 53°F | Drizzle | 15 mph NNW | 84% |
| 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 | 59% |
| Thursday | 42°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) for Bertha (46.267, -95.062). Updated through the day.
Growing snapshot for Bertha
Last spring frost
May 10
First fall frost
Sep 30
Growing season
141 days
Hardiness zone
4a
More local growing data for Bertha: nearby ZIP 56437 weather · frost dates · planting calendar · Minnesota frost dates
Nearby towns & communities
Aldrich
Browerville
Burtrum
Clarissa
Eagle Bend
Grey Eagle
Hewitt
Long Prairie
Osakis
Staples
Verndale
West Union
Climate data from the nearest NOAA station, Wadena 3 S, Mn (11.1 mi from Bertha). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.