A very warm mid-September day is expected today with highs in the upper 80s to lower 90s. There is a chance for an isolated shower across northwestern Missouri. Precipitation chances will increase after midnight tonight with showers and thunderstorms then possible for the rest of the weekend. Highs Saturday will remain above average in the mid to upper 80s before returning to near normal on Sunday as a cold front moves through. Expect highs on Sunday in the upper 70s to mid 80s. Here’s the 7-day forecast from the National Weather Service:

Today: Mostly sunny, with a high near 90. South wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 25 mph.

Tonight: A slight chance of showers and thunderstorms after 2 a.m. Partly cloudy, with a low around 70. South southeast wind 9 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.

Saturday: A slight chance of showers and thunderstorms. Partly sunny, with a high near 87. South wind 8 to 11 mph. Chance of precipitation is 20%.

Saturday Night: A chance of showers and thunderstorms, mainly after 8 p.m. Mostly cloudy, with a low around 64. South wind 5 to 10 mph becoming light and variable. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.

Sunday: A chance of showers and thunderstorms. Mostly cloudy, with a high near 79. North wind around 5 mph becoming light and variable. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Sunday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Monday: Showers and thunderstorms likely, mainly between 8 a.m. and 2 p.m. Mostly cloudy, with a high near 82. Chance of precipitation is 60%.

Monday Night: A chance of showers and thunderstorms after 2 a.m. Mostly cloudy, with a low around 67. Chance of precipitation is 40%.

Tuesday: A chance of showers and thunderstorms before 2 p.m. Partly sunny, with a high near 84. Chance of precipitation is 40%.

Tuesday Night: A chance of showers and thunderstorms between 8 p.m. and 2 a.m. Partly cloudy, with a low around 68. Chance of precipitation is 30%.

Wednesday: Mostly sunny, with a high near 83.

Wednesday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 64. Chance of precipitation is 30%.

Thursday: A chance of showers and thunderstorms. Mostly sunny, with a high near 82. Chance of precipitation is 30%.