Dangerous Heat and Possible Flooding
Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >
Hazardous Weather Conditions
Current conditions at
Fort Smith Regional Airport (KFSM)
Lat: 35.33°NLon: 94.37°WElev: 436ft.
Fair
98°F
37°C
| Humidity | 24% |
| Wind Speed | E 6 mph |
| Barometer | 29.98 in (1014.7 mb) |
| Dewpoint | 56°F (13°C) |
| Visibility | 10.00 mi |
| Heat Index | 96°F (36°C) |
| Last update | 28 Aug 5:53 pm CDT |
Extended Forecast for
Mountainburg AR
Tonight
Low: 67 °F
Clear
Saturday
High: 94 °F
Sunny
Saturday Night
Low: 70 °F
Mostly Clear
Sunday
High: 98 °F
Sunny
Sunday Night
Low: 72 °F
Mostly Clear
Monday
High: 98 °F
Sunny
Monday Night
Low: 73 °F
Clear
Tuesday
High: 96 °F
Sunny
Tuesday Night
Low: 74 °F
Mostly Clear
Detailed Forecast
Tonight
Clear, with a low around 67. East wind around 5 mph.
Saturday
Sunny, with a high near 94. Southeast wind around 5 mph.
Saturday Night
Mostly clear, with a low around 70. East wind around 5 mph.
Sunday
Sunny, with a high near 98. Heat index values as high as 102. East wind around 5 mph becoming south in the afternoon.
Sunday Night
Mostly clear, with a low around 72. Southeast wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 98. Southeast wind around 5 mph becoming south in the afternoon.
Monday Night
Clear, with a low around 73. Southeast wind around 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 96. Calm wind becoming south around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 74. Southeast wind around 5 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 97. Calm wind becoming south around 5 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 74. Southeast wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 98. Calm wind becoming south around 5 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 74. Southeast wind around 5 mph becoming calm in the evening.
Friday
Sunny, with a high near 98. Calm wind becoming south around 5 mph in the morning.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Mountainburg AR
35.63°N 94.17°W
35.63°N 94.17°W
5:50 pm CDT Aug 28, 2026
6pm CDT Aug 28, 2026-6pm CDT Sep 4, 2026
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