National Weather Service Forecast for: Bartlesville OK
Issued by: National Weather Service Tulsa, OK
Updated: 2:50 am CDT Aug 20, 2026
 
Overnight

Overnight: A 20 percent chance of showers and thunderstorms before 4am. Partly cloudy, with a low around 72. Calm wind.
Slight Chance
T-storms

 Thursday

Thursday: Partly sunny, then gradually becoming sunny, with a high near 99. Heat index values as high as 104. Calm wind becoming northeast around 5 mph in the morning.
Becoming
Sunny

 Thursday
Night
Thursday Night: A 20 percent chance of showers after 4am. Increasing clouds, with a low around 71. Northeast wind around 5 mph becoming calm after midnight.
Mostly Clear
then Slight
Chance
Showers
 Friday

Friday: A 10 percent chance of showers before 7am. Mostly sunny and hot, with a high near 101. Heat index values as high as 106. Calm wind becoming east around 5 mph in the afternoon.
Slight Chance
Showers then
Sunny
 Friday
Night
Friday Night: A 20 percent chance of showers. Mostly clear, with a low around 73. East wind around 5 mph becoming calm in the evening.
Slight Chance
Showers

 Saturday

Saturday: A slight chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 1pm. Mostly sunny and hot, with a high near 100. Calm wind becoming east around 5 mph in the morning. Chance of precipitation is 20%.
Slight Chance
T-storms then
Slight Chance
Showers
 Saturday
Night
Saturday Night: Mostly clear, with a low around 72. East wind 5 to 10 mph.
Mostly Clear

 Sunday

Sunday: Mostly sunny, with a high near 97. East wind 5 to 10 mph.
Mostly Sunny

 Sunday
Night
Sunday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74. East wind around 5 mph.
Slight Chance
T-storms
Lo 72 °F Hi 99 °F Lo 71 °F Hi 101 °F Lo 73 °F Hi 100 °F Lo 72 °F Hi 97 °F Lo 74 °F

Hazardous Weather Outlook
 

Overnight
 
 A 20 percent chance of showers and thunderstorms before 4am. Partly cloudy, with a low around 72. Calm wind.
Thursday
 
 Partly sunny, then gradually becoming sunny, with a high near 99. Heat index values as high as 104. Calm wind becoming northeast around 5 mph in the morning.
Thursday Night
 
 A 20 percent chance of showers after 4am. Increasing clouds, with a low around 71. Northeast wind around 5 mph becoming calm after midnight.
Friday
 
 A 10 percent chance of showers before 7am. Mostly sunny and hot, with a high near 101. Heat index values as high as 106. Calm wind becoming east around 5 mph in the afternoon.
Friday Night
 
 A 20 percent chance of showers. Mostly clear, with a low around 73. East wind around 5 mph becoming calm in the evening.
Saturday
 
 A slight chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 1pm. Mostly sunny and hot, with a high near 100. Calm wind becoming east around 5 mph in the morning. Chance of precipitation is 20%.
Saturday Night
 
 Mostly clear, with a low around 72. East wind 5 to 10 mph.
Sunday
 
 Mostly sunny, with a high near 97. East wind 5 to 10 mph.
Sunday Night
 
 A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74. East wind around 5 mph.
Monday
 
 Mostly sunny and hot, with a high near 101. South wind around 10 mph, with gusts as high as 20 mph.
Monday Night
 
 Mostly clear, with a low around 75. East wind 5 to 10 mph.
Tuesday
 
 Mostly sunny and hot, with a high near 101. Northeast wind 5 to 10 mph.
Tuesday Night
 
 A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74. Northeast wind around 5 mph.
Wednesday
 
 Mostly sunny, with a high near 99. Northeast wind 5 to 10 mph.

 

Forecast from NOAA-NWS for Bartlesville OK.