Bertha, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Bertha, a city in Todd County, Minnesota.
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 70%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Bertha
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 59°F | Rain Showers Likely | 15 mph ESE | 71% |
| Tonight | 53°F | Chance Rain Showers | 10 to 15 mph E | 53% |
| Saturday | 64°F | Mostly Cloudy | 5 to 10 mph NE | 11% |
| Saturday Night | 52°F | Partly Cloudy | 5 mph NE | 0% |
| Sunday | 64°F | Mostly Cloudy | 10 mph ENE | 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) 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 Sep 18, 2026.