Father's Day weekend weather conditions will feature a contrast between storms to dodge in the East and extreme heat gripping parts of the West, both of which might require a Plan B if you have outdoor activities in the works.

Here's a look at what to plan for this weekend:

Who Could Be Wet Vs. Dry

• Overview: Areas from the South to the Ohio Valley, mid-Atlantic and parts of the Northeast have a threat of showers and storms on one or both weekend days as Gulf moisture teams up with an upper-level disturbance and a stalled front. A few isolated to scattered storms will also billow up in the Northern Plains and upper Midwest. The Rockies to the West Coast will stay dry.
• In Detail: One important note is that not every location shaded green on our maps will see wet weather contributing to a washout on both weekend days because the showers and storms will be scattered in nature. But it's worth having an alternative indoor plan on top of making sure you have a way to shelter from lightning if you hear thunder and are caught outdoors. Locally heavy rain is also possible in spots from the South to the Ohio Valley and mid-Atlantic, so flash flooding cannot be ruled out.
• Possible Sporting Events Affected: The U.S. Open golf tournament outside of Pittsburgh might have to contend with showers and storms, so interruptions to play are possible. Major League Baseball games in the stormy zone on one or both days include: Miami Marlins at Washington Nationals | Los Angeles Angels at Baltimore Orioles | Toronto Blue Jays at Philadelphia Phillies | Tampa Bay Rays at New York Mets | Colorado Rockies at Atlanta Braves | New York Yankees at Boston Red Sox

Summer's Extreme Heat Battles Spring's Cooler Leftovers

• Sweltering: The Southwest will see the most extreme heat this weekend, with highs hitting 110-plus degrees in Phoenix. Mid-to-upper 90s will make for hot afternoons in Albuquerque and Salt Lake City, while Denver hitting the lower 90s is nearly 10 degrees above average.
• Keeping Their Cool: 60s and lower 70s might be all the Northeast can manage for highs all weekend long, so it will feel more like spring than summer, or in other words, not great for pool or beach weather. Parts of the northern Great Lakes and upper Midwest will also see 60s and 70s on Saturday before warming up some on Sunday.
• Typical For Mid-June: Much of the South will have highs in the 80s to lower 90s along with plenty of humidity. Stay hydrated if you are going to spend time outside.

Chris Dolce has been a senior digital meteorologist with weather.com for 15 years after beginning his career with The Weather Channel in the early 2000s.