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It's been a cloudy and cool day, Friday, but if you're a sunshine lover don't fret! We've got a day nearly filled with sun on Saturday as strong Canadian high pressure dips south over the Great Lakes!Interactive Radar | Weather AlertsThat sunshine will help us warm back into the middle 60s and with just light winds it's looking like a wonderful day. Clouds build in by Saturday evening and will be with us throughout the day Sunday as the area of high pressure slowly pushes eastward and a strong area of low pressure in the mountain west starts to move in. This will begin to increase our chances for showers by Sunday night and will set the stage for severe storm potential Monday.Winds will increase ahead of the area of low pressure surging ample Gulf moisture into Iowa kicking our dewpoints back into the middle 60s and high temperatures into the low 80s. It's going to feel very warm and muggy for late April. With the heat and moisture in place we'll have a large amount of instability across much of the state providing significant energy for any storm that does fire to tap into.There's still some question with regards to the exact evolution of the storms, but at this point large hail and damaging wind look like the primary threats, though depending how higher resolution models come in as we get closer, tornadoes cannot be ruled out either. There is quite a bit of uncertainty at this stage as to how significant of a tornado threat will exist, but regardless of the exact tornado threat it's looking to be a very active day.Details will be refined as we get closer, but for now late afternoon into the evening looks to be the time with some storms carrying into the overnight. Global models paint more of a linear picture dragging a line across the state associated with a cold front attacked to the robust area of low pressure as it pushes over Minnesota. These models lack the detail to pick up on what could be discrete cells forming ahead of that cold front which magnifies the importance of seeing what shorter range, higher resolution models will say this weekend as get closer to Monday.Either way, plan for an impactful weather day. As the storms system passes temperatures will fall Tuesday/Wednesday with highs only topping out in the mid to upper 60s and morning lows Wednesday in the mid 40s with high pressure filling in bringing in more sunshine. Temperatures build back into the 70s by Thursday as another weaker low pressure center pushes into Iowa from Kansas bringing our next chance for showers and thunderstorms. Any severe weather threat with this system looks to stay rather limited as much of the instability staying south of the state and some weaker instability throughout southeastern Iowa. Des Moines ForecastToday: Generally cloudy, breezy, and cool. Some clearing late in the day. High 59F. Winds N at 10 to 20 mph.Tonight: Mostly cloudy early, then clearing overnight. Low 40F. Winds NNE at 10 to 20 mph.Tomorrow: Sunny along with a few clouds. High 63F. Winds ENE at 10 to 15 mph.Tomorrow Night: Partly cloudy skies during the evening will give way to cloudy skies overnight. Low 48F. Winds ESE at 10 to 15 mph.Sunday: Partly to mostly cloudy. A spotty shower or storm mainly in the morning. High 69F. Winds SE at 10 to 20 mph.Sunday Night: Spotty storms late, mainly over northern Iowa. Low 60F. Winds SSE at 15 to 25 mph.