Weather WorldSumac Lake, AR Weather Forecast
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Sumac Lake Weather Forecast
| TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT |
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| Mostly Cloudy | Chance of T-Storm | Chance of T-Storm | Partly Sunny | Mostly Clear | Mostly Clear | Mostly Clear | Partly Cloudy | Partly Cloudy | Chance of Showers | Chance of Showers | Chance of Showers |
| Lo: 71°FLo: 22°C | Hi: 91°FHi: 33°C | Lo: 69°FLo: 21°C | Hi: 85°FHi: 29°C | Lo: 59°FLo: 15°C | Hi: 80°FHi: 27°C Lo: 55°FLo: 13°C | Hi: 80°FHi: 27°C Lo: 55°FLo: 13°C | Hi: 81°FHi: 27°C Lo: 59°FLo: 15°C | Hi: 81°FHi: 27°C Lo: 59°FLo: 15°C | Hi: 81°FHi: 27°C Lo: 60°FLo: 16°C | Hi: 81°FHi: 27°C Lo: 60°FLo: 16°C | Lo: 60°FLo: 16°C |
| POP: 40% | POP: 20% | POP: 20% | POP: 20% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 450 PM CDT Sun Sep 20 2026 
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Issued: 616 PM CDT Sun Sep 20 2026
Key Messages
Issued at 606 PM CDT Sun Sep 20 2026
-Chances for showers and thunderstorms will increase across mainly NW Arkansas Sunday night into Monday
-A cold front is expected to bring cooler temperatures to the state by Tuesday, continuing through much of the upcoming week
Discussion
... Issued at 1235 AM CDT Sun Sep 20 2026
One more day of widespread high temperatures in the mid 90s F to around 100 F. Td values are expected to be slightly higher than what was observed on Saturday, but afternoon ...