Weather World
Mccormack Lake, MO Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Mccormack Lake Weather Forecast
| THIS AFTERNOON | TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT |
 |  | | | |  |  | |  |  |  | |
| Sunny | Mostly Clear | Sunny | Mostly Clear | Mostly Sunny | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of Showers | Partly Cloudy | Partly Cloudy | Mostly Clear |
| Hi: 99°FHi: 37°C | Lo: 70°FLo: 21°C | Hi: 100°FHi: 38°C | Lo: 70°FLo: 21°C | Hi: 99°FHi: 37°C | Lo: 69°FLo: 21°C | Hi: 91°FHi: 33°C | Lo: 61°FLo: 16°C | Hi: 81°FHi: 27°C | Hi: 81°FHi: 27°C Lo: 55°FLo: 13°C | Hi: 81°FHi: 27°C Lo: 55°FLo: 13°C | Hi: 81°FHi: 27°C Lo: 55°FLo: 13°C |
| POP: 20% | POP: 50% | POP: 50% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 127 PM CDT Fri Sep 18 2026 
Mccormack Lake Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
Mccormack Lake Weather Map
Mccormack Lake Quick Facts
Mccormack Lake Forecast Discussion
Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 110 PM CDT Fri Sep 18 2026
Key Messages
- A Heat Advisory is in effect through Saturday. Highs near 100 with Heat Index values 100-105 can be expected. Daily records may continue to be tied or broken.
- Less than 20% chance for isolated showers and storms this afternoon, particularly across the eastern Ozarks and south- central Missouri.
- Cooler conditions with scattered rain chances arrive early next week. Details on the exact extent of the cooldown and location of the highest rain chances remain uncertain at this time.