Weather World
Costas Lake, MS 7-Day Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Costas Lake Weather Forecast
Costas Lake, MS Weather Forecast Date: 831 PM CDT Tue Sep 01 2026
Weather forecast for Costas Lake, MS
Tonight Lo: 75°F Lo: 24°C |
Tonight... Partly cloudy early this evening, then clearing. Lows in the mid 70s. South winds around 5 mph. |
Wed Hi: 99°FHi: 37°C Lo: 75°F Lo: 24°C |
Wednesday... Sunny. Highs in the upper 90s. Light and variable winds, becoming southeast around 5 mph in the afternoon. Heat index values up to 106. |
| Thu Hi: 99°FHi: 37°C Lo: 75°F Lo: 24°C |
Thursday... Mostly sunny. Humid with highs in the upper 90s. North winds around 5 mph, becoming east in the afternoon. Heat index values up to 108. |
Fri Hi: 95°FHi: 35°C Lo: 71°F Lo: 22°C |
Friday... Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the mid 90s. Chance of rain 50%. Heat index values up to 105. |
| Sat Hi: 95°FHi: 35°C Lo: 71°F Lo: 22°C |
Saturday... Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the mid 90s. Chance of rain 40%. Heat index values up to 105. |
Sun Hi: 95°FHi: 35°C Lo: 71°F Lo: 22°C |
Sunday... Partly cloudy. Lows in the lower 70s. Highs in the mid 90s. Heat index values up to 110. |
| Mon Hi: 95°FHi: 35°C Lo: 71°F Lo: 22°C |
Monday... Partly cloudy. Lows in the lower 70s. Highs in the mid 90s. Heat index values up to 110. |
| Mon Hi: 95°FHi: 35°C Lo: 71°F Lo: 22°C |
Monday... Partly cloudy. Lows in the lower 70s. Highs in the mid 90s. Heat index values up to 110. |
Costas Lake Radar Loop
Use the map search tool if you want to place a location marker on the radar map...