Bertha, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Bertha, a city in Todd County, Minnesota.
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 for Bertha
| 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 | 6% |
| 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 ENE | 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 | 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) 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 Aug 4, 2026.