Widespread rain showers and isolated thunderstorms will move into the area after noon today. This rain will continue overnight, but will clear out by mid morning with a nice, but cool, Friday afternoon. Temperatures will drop unseasonably cool Saturday afternoon with widespread frost and some freezing temperatures over northern Missouri.

Here's the forecast for the Sedalia/Whiteman AFB/Warrensburg area according to the National Weather Service In Pleasant Hill:

Today
Showers likely, mainly after 4pm. Increasing clouds, with a high near 63. Calm wind becoming south southwest 5 to 7 mph in the morning. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Showers, mainly before 4am. Low around 48. Light and variable wind becoming north 6 to 11 mph after midnight. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Friday
A chance of showers, mainly before 7am. Mostly cloudy through mid morning, then gradual clearing, with a high near 58. North wind 14 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Areas of frost after 5am. Otherwise, clear, with a low around 35. North northwest wind 5 to 9 mph becoming calm in the evening.
Saturday
Mostly sunny, with a high near 63. Calm wind becoming southwest around 6 mph in the morning.
Saturday Night
A slight chance of showers before 1am. Partly cloudy, with a low around 42. Chance of precipitation is 20%.
Sunday
Mostly sunny, with a high near 61.
Sunday Night
Mostly clear, with a low around 38.
Monday
A chance of showers after 1pm. Partly sunny, with a high near 58. Chance of precipitation is 30%.
Monday Night
A chance of showers after 1am. Mostly cloudy, with a low around 44. Chance of precipitation is 40%.
Tuesday
Showers likely. Mostly cloudy, with a high near 58. Chance of precipitation is 60%.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 48. Chance of precipitation is 50%.
Wednesday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 68. Chance of precipitation is 50%.