Mirth Lake, MN Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Mirth Lake Weather Forecast
| REST OF TODAY | TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | COLUMBUS DAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT |
| Sunny | Partly Cloudy | Clearing | Mostly Clear | Mostly Sunny | Chance of Showers | Chance of Showers | Chance of Showers | Mostly Cloudy | Mostly Cloudy | Chance of Showers | Showers Likely |
| Hi: 59°FHi: 15°C | Lo: 45°FLo: 7°C | Hi: 75°FHi: 24°C | Lo: 60°FLo: 16°C | Hi: 75°FHi: 24°C | Lo: 45°FLo: 7°C | Hi: 55°FHi: 13°C | Lo: 35°FLo: 2°C | Hi: 51°FHi: 11°C Lo: 31°FLo: -1°C | Hi: 51°FHi: 11°C Lo: 31°FLo: -1°C | Hi: 55°FHi: 13°C | Lo: 39°FLo: 4°C |
| POP: 50% | POP: 50% | POP: 40% | POP: 20% | POP: 60% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1021 AM CDT Fri Oct 09 2026 

Mirth Lake Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
Mirth Lake Weather Map
Mirth Lake Quick Facts
Mirth Lake Forecast Discussion
Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 611 AM CDT Fri Oct 9 2026
Key Messages
- Warming up today into this weekend. Hot weather with near- record highs in the upper-70s to mid-80s expected on Saturday and near-record warm lows Saturday night.
- Near-critical fire weather conditions could occur Saturday with gusty south winds of 25-35 mph, dry air, and very warm temperatures.
- Closer to seasonal temperatures next week with rain chances returning late Sunday and Monday.
Discussion
... Issued at 300 PM CDT Thu Oct 8 2026
FRIDAY INTO SUNDAY:
Surface high pressure departing...
Weather World