National Weather Service Forecast for: Owasso OK
Issued by: National Weather Service Tulsa, OK
Updated: 10:50 pm CDT Jun 18, 2026
 
Tonight

Tonight: A chance of showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 4am, then a chance of showers and thunderstorms after 4am. Cloudy, with a low around 67. Northeast wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Showers
Likely

 Juneteenth

Juneteenth: A 30 percent chance of showers and thunderstorms, mainly before 7am. Mostly cloudy, with a high near 84. Northeast wind 5 to 10 mph becoming south in the morning.
Chance
Showers then
Mostly Cloudy
 Friday
Night
Friday Night: A slight chance of showers before 10pm, then a chance of showers after 4am. Partly cloudy, with a low around 70. Southeast wind around 5 mph. Chance of precipitation is 30%.
Chance
Showers

 Saturday

Saturday: A 40 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 85. Southeast wind 5 to 10 mph.
Chance
Showers

 Saturday
Night
Saturday Night: A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 74. Southeast wind 10 to 15 mph, with gusts as high as 20 mph.
Partly Cloudy
then Slight
Chance
T-storms
 Sunday

Sunday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 91. South wind 15 to 20 mph, with gusts as high as 30 mph.
Chance
T-storms

 Sunday
Night
Sunday Night: Showers and possibly a thunderstorm before 1am, then showers and thunderstorms likely after 1am. Low around 71. South wind 10 to 15 mph becoming east after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 80%.
T-storms

 Monday

Monday: A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 82. Southeast wind around 10 mph becoming north in the morning.
Chance
T-storms

 Monday
Night
Monday Night: A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68. Northeast wind 5 to 10 mph.
Chance
T-storms
Lo 67 °F Hi 84 °F Lo 70 °F Hi 85 °F Lo 74 °F Hi 91 °F Lo 71 °F Hi 82 °F Lo 68 °F

Hazardous Weather Outlook
 

Tonight
 
 A chance of showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 4am, then a chance of showers and thunderstorms after 4am. Cloudy, with a low around 67. Northeast wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Juneteenth
 
 A 30 percent chance of showers and thunderstorms, mainly before 7am. Mostly cloudy, with a high near 84. Northeast wind 5 to 10 mph becoming south in the morning.
Friday Night
 
 A slight chance of showers before 10pm, then a chance of showers after 4am. Partly cloudy, with a low around 70. Southeast wind around 5 mph. Chance of precipitation is 30%.
Saturday
 
 A 40 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 85. Southeast wind 5 to 10 mph.
Saturday Night
 
 A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 74. Southeast wind 10 to 15 mph, with gusts as high as 20 mph.
Sunday
 
 A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 91. South wind 15 to 20 mph, with gusts as high as 30 mph.
Sunday Night
 
 Showers and possibly a thunderstorm before 1am, then showers and thunderstorms likely after 1am. Low around 71. South wind 10 to 15 mph becoming east after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 80%.
Monday
 
 A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 82. Southeast wind around 10 mph becoming north in the morning.
Monday Night
 
 A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68. Northeast wind 5 to 10 mph.
Tuesday
 
 A 40 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 83. Northeast wind around 5 mph.
Tuesday Night
 
 A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69. Northeast wind around 5 mph becoming calm in the evening.
Wednesday
 
 A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 84. East wind around 5 mph.
Wednesday Night
 
 A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69. East wind around 5 mph.
Thursday
 
 A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 86. South wind 5 to 10 mph.

 

Forecast from NOAA-NWS for Owasso OK.