Weather World
Anna, IL Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Anna Weather Forecast
| TODAY | TONIGHT | LABOR DAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT |
 |  | | | | | |  |  |  | |  |
| Sunny | Mostly Clear | Sunny | Mostly Clear | Sunny | Mostly Clear | Mostly Clear | Chance of Showers | Chance of Showers | Partly Cloudy | Sunny | Chance of Showers |
| Hi: 91°FHi: 33°C | Lo: 65°FLo: 18°C | Hi: 90°FHi: 32°C | Lo: 65°FLo: 18°C | Hi: 91°FHi: 33°C | Hi: 99°FHi: 37°C Lo: 71°FLo: 22°C | Hi: 99°FHi: 37°C Lo: 71°FLo: 22°C | Lo: 71°FLo: 22°C | Hi: 89°FHi: 32°C | Lo: 65°FLo: 18°C | Hi: 89°FHi: 32°C | Lo: 65°FLo: 18°C |
| POP: 40% | POP: 50% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 542 AM CDT Sun Sep 06 2026 
Anna Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
Anna Weather Map
Anna Quick Facts
Anna Forecast Discussion
Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 627 AM CDT Sun Sep 6 2026
Key Messages
- A Heat Advisory is in effect until 8 PM tonight for portions of southeast Missouri and west Kentucky, generally south of a Greenville Missouri to Murray Kentucky line. Heat index values in the Advisory area will reach 100 to 105 degrees.
- Labor Day will be the choice day of the weekend, with highs around 90, much less humidity, and a light northeast wind. Another major warming trend begins Tuesday and continues Wednesday, when high temperatures will be 95 to 100, and heat index values...