National Weather Service Forecast for: Siloam Springs AR
Issued by: National Weather Service Tulsa, OK
Updated: 5:50 am CDT Jun 22, 2026
 
Today

Today: Showers and thunderstorms, mainly before 10am. High near 81. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Showers then
Slight Chance
T-storms
 Tonight

Tonight: A 40 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 68. North wind around 5 mph becoming east after midnight.
Slight Chance
T-storms then
Chance
Showers
 Tuesday

Tuesday: A chance of showers and thunderstorms before 10am, then showers likely and possibly a thunderstorm between 10am and 1pm, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 82. East wind around 5 mph becoming south in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Showers
Likely

 Tuesday
Night
Tuesday Night: Showers likely and possibly a thunderstorm. Increasing clouds, with a low around 69. Southeast wind around 5 mph. Chance of precipitation is 60%.
Showers
Likely

 Wednesday

Wednesday: Showers and possibly a thunderstorm. High near 83. South wind around 5 mph becoming southwest in the afternoon. Chance of precipitation is 80%.
Showers

 Wednesday
Night
Wednesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 69. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 70%.
Showers
Likely

 Thursday

Thursday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 84. South wind around 5 mph.
Chance
T-storms

 Thursday
Night
Thursday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 70. Southeast wind around 5 mph. Chance of precipitation is 70%.
Chance
T-storms then
Showers
Likely
 Friday

Friday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 85. South wind 5 to 15 mph, with gusts as high as 20 mph.
Chance
T-storms
Hi 81 °F Lo 68 °F Hi 82 °F Lo 69 °F Hi 83 °F Lo 69 °F Hi 84 °F Lo 70 °F Hi 85 °F

Hazardous Weather Outlook
Flood Watch
Flash Flood Warning
 

Today
 
 Showers and thunderstorms, mainly before 10am. High near 81. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
 
 A 40 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 68. North wind around 5 mph becoming east after midnight.
Tuesday
 
 A chance of showers and thunderstorms before 10am, then showers likely and possibly a thunderstorm between 10am and 1pm, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 82. East wind around 5 mph becoming south in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
 
 Showers likely and possibly a thunderstorm. Increasing clouds, with a low around 69. Southeast wind around 5 mph. Chance of precipitation is 60%.
Wednesday
 
 Showers and possibly a thunderstorm. High near 83. South wind around 5 mph becoming southwest in the afternoon. Chance of precipitation is 80%.
Wednesday Night
 
 Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 69. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 70%.
Thursday
 
 A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 84. South wind around 5 mph.
Thursday Night
 
 A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 70. Southeast wind around 5 mph. Chance of precipitation is 70%.
Friday
 
 A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 85. South wind 5 to 15 mph, with gusts as high as 20 mph.
Friday Night
 
 A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74. South wind around 10 mph, with gusts as high as 20 mph.
Saturday
 
 A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87. South wind around 15 mph, with gusts as high as 25 mph.
Saturday Night
 
 Mostly clear, with a low around 77. South wind around 15 mph, with gusts as high as 25 mph.
Sunday
 
 Sunny, with a high near 89. South wind 15 to 20 mph, with gusts as high as 30 mph.

 

Forecast from NOAA-NWS for Siloam Springs AR.