A very warm weekend is in store across western Kansas. Today will be warm and muggy, with an afternoon high climbing to near 90. A cold front will move through tonight with lows falling into the mid 60s along with a slight chance of showers and thunderstorms.

Thunderstorm chances will be on the increase by late in the day Sunday as an upper level jet stream approaches, along with a front from the north. Severe weather risk will also be present with ample moisture, instability, and wind shear in places Sunday night.

Slightly cooler temperatures can be expected Monday and Tuesday following the frontal passage.

Today: Mostly sunny, with a high near 90. Breezy, with a south wind 7 to 12 mph increasing to 16 to 21 mph in the afternoon.

Tonight: A 20 percent chance of showers and thunderstorms before 4am. Partly cloudy, with a low around 66. Breezy, with a south wind 11 to 20 mph.

Sunday: A 40 percent chance of showers and thunderstorms, mainly after 3pm. Mostly sunny, with a high near 87. Southwest wind 7 to 15 mph becoming north northeast in the afternoon.

Sunday Night: A 50 percent chance of showers and thunderstorms, mainly before 5am. Mostly cloudy, with a low around 62. North northeast wind 6 to 9 mph.

Monday: A 10 percent chance of showers and thunderstorms before 7am. Mostly sunny, with a high near 83. Northeast wind around 6 mph.