National Weather Service Forecast for: Jefferson City MO
Issued by: National Weather Service Saint Louis, MO
Updated: 11:30 pm CDT Jun 18, 2026
 
Tonight

Tonight: Patchy fog after 4am. Otherwise, partly cloudy, with a low around 59. Calm wind.
Patchy Fog

 Juneteenth

Juneteenth: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 85. Calm wind.
Patchy Fog
then Mostly
Sunny
 Friday
Night
Friday Night: A slight chance of showers and thunderstorms between 3am and 4am. Partly cloudy, with a low around 64. Calm wind. Chance of precipitation is 20%.
Mostly Cloudy
then Slight
Chance
T-storms
 Saturday

Saturday: Mostly sunny, with a high near 86. Light and variable wind.
Mostly Sunny

 Saturday
Night
Saturday Night: A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 68. Calm wind. Chance of precipitation is 60%.
Slight Chance
T-storms then
Showers
Likely
 Sunday

Sunday: Showers and possibly a thunderstorm. High near 84. Chance of precipitation is 90%.
Showers then
T-storms

 Sunday
Night
Sunday Night: Showers and possibly a thunderstorm before 1am, then a chance of showers. Low around 66. Chance of precipitation is 80%.
Showers

 Monday

Monday: Partly sunny, with a high near 80.
Partly Sunny

 Monday
Night
Monday Night: Partly cloudy, with a low around 61.
Partly Cloudy
Lo 59 °F Hi 85 °F Lo 64 °F Hi 86 °F Lo 68 °F Hi 84 °F Lo 66 °F Hi 80 °F Lo 61 °F

 

Tonight
 
 Patchy fog after 4am. Otherwise, partly cloudy, with a low around 59. Calm wind.
Juneteenth
 
 Patchy fog before 8am. Otherwise, mostly sunny, with a high near 85. Calm wind.
Friday Night
 
 A slight chance of showers and thunderstorms between 3am and 4am. Partly cloudy, with a low around 64. Calm wind. Chance of precipitation is 20%.
Saturday
 
 Mostly sunny, with a high near 86. Light and variable wind.
Saturday Night
 
 A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 68. Calm wind. Chance of precipitation is 60%.
Sunday
 
 Showers and possibly a thunderstorm. High near 84. Chance of precipitation is 90%.
Sunday Night
 
 Showers and possibly a thunderstorm before 1am, then a chance of showers. Low around 66. Chance of precipitation is 80%.
Monday
 
 Partly sunny, with a high near 80.
Monday Night
 
 Partly cloudy, with a low around 61.
Tuesday
 
 Mostly sunny, with a high near 82.
Tuesday Night
 
 Partly cloudy, with a low around 63.
Wednesday
 
 Mostly sunny, with a high near 84.
Wednesday Night
 
 A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 63.
Thursday
 
 A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84.

 

Forecast from NOAA-NWS for Jefferson City MO.