NWS Forecast for Mountain Home AR

National Weather Service Forecast for: Mountain Home AR
Issued by: National Weather Service Little Rock, AR

Updated: 2:35 am CDT Aug 20, 2026

Overnight Slight Chance T-storms	Thursday Becoming Sunny	Thursday Night Mostly Clear	Friday Mostly Sunny	Friday Night Mostly Clear	Saturday Mostly Sunny then Chance T-storms	Saturday Night Mostly Clear	Sunday Mostly Sunny	Sunday Night Slight Chance T-storms then Chance Showers
Lo 71 °F	Hi 92 °F	Lo 69 °F	Hi 93 °F	Lo 69 °F	Hi 94 °F	Lo 68 °F	Hi 89 °F	Lo 68 °F

Overnight	A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71. Calm wind.
Thursday	Partly sunny, then gradually becoming sunny, with a high near 92. Heat index values as high as 100. Calm wind becoming north around 5 mph.
Thursday Night	Mostly clear, with a low around 69. Calm wind becoming east northeast around 5 mph.
Friday	Mostly sunny, with a high near 93. Heat index values as high as 97. Calm wind.
Friday Night	Mostly clear, with a low around 69. Calm wind.
Saturday	A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 94. Calm wind becoming north around 5 mph.
Saturday Night	Mostly clear, with a low around 68. Calm wind becoming east northeast around 5 mph.
Sunday	Mostly sunny, with a high near 89. Calm wind becoming east around 5 mph.
Sunday Night	A 30 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 68. Calm wind becoming east around 5 mph after midnight.
Monday	A 40 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 87.
Monday Night	A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69.
Tuesday	Sunny, with a high near 92.
Tuesday Night	Mostly clear, with a low around 69.
Wednesday	A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.

Forecast from NOAA-NWS for Mountain Home AR.