As January finally brings cold winter air into Philadelphia, many families retreat indoors, while others brave the plummeting temperatures. Whatever best suits your family, there are many ways to spend these cold winter days throughout the Delaware Valley.

If you are ready to experience brisk wintertime weather, participate in the Conservancy Cottage Winter Bird Count or learn about unique animal critters at Warwick County Park's Weird Wildlife workshop. However, if your family prefers to retreat indoors when the mercury drops, this weekend does not disappoint. Enjoy the Academy of Natural Sciences' Reptile exhibit, the Delaware Children's Museum's Try Science workshop, or The Michener Museum's Family Drawing Days.

Whether indoors or out, much fun awaits this weekend. To stay on top of the latest activities, be sure to sign up for our newsletter which is delivered to your inbox on Sundays and Thursdays.

The holidays might be over, but the family fun hasn't ended. Take your kids on a trip down memory lane with the Arcade Age interactive exhibit at The Cradle of Aviation. Step right up - no coins needed - and blast off to the past by playing childhood faves such as Space Invaders, Donkey Kong and more! And Family Sundays are back at the Nassau County Museum of Art, while Lego Clubs in Amityville and Bridgehampton are also being held this weekend for the little brick fan in your life.

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With the kids back in school and the first snow on the ground, it's finally beginning to feel like a typical ice-cold January in Boston. But that doesn't mean it's time to hibernate! With indoor events celebrating Celtic music (pictured), energy sabers, and cardboard, as well as tons of outdoor winter fun on the trails and walkways, there's no reason to stay home.

Free activities this weekend guaranteed to please the whole family include the annual Snowflake Festival and JCC's Winter Wonderland Family Fun Day.

Finally, if you're in the market for a summer camp or school for this fall, keep an eye out for open houses as they start to fill up the Event Calendar.

Also on Mommy Poppins Boston this week:

• Use our January GoList to help you plan out your family's activities this month.
• If you're already looking forward to your next vacation, one of these resorts, beaches, and cities could be the perfect getaway.
• These Boston parent blogs are definitely read-worthy in 2016.
• Elyse shares some great spots to take wintertime walks with the family. 

Enjoy your weekend and don't forget to check out the full Event Calendar!

Sitting at the heart of Orange County, Irvine is all grown up from the sleepy suburb founded in the early 1970s. With 250,000 residents, UC Irvine, and the headquarters of many well-known companies—even In-n-Out is headquartered here!—it is consistently rated as one of the safest and best cities to live in by national publications. With all this going on, there must be something to do, right? And is there ever!

If you're looking for an outing in your own backyard, are making a weekend around a sports tournament (Irvine’s parks play host often), or just fancy a drive somewhere new, there are lots of places to explore around Irvine.

As the temperature drops in Westchester, the fun doesn’t stop—it just moves mostly indoors. We know the holidays can cost a pretty penny, so we’ve made a point of identifying fun family events that won’t break the bank. In fact, of the eight top picks we’ve listed below, seven are entirely FREE!

Our recommendations include getting your creative juices flowing at Maker Day or Dia:Beacon Community Free Day; competing for the crown at the Annual Chess Tournament; meeting African creatures at Animal Embassy; and channeling The Force at Celebrate Star Wars.

Read on for more details and more options, and then continue on to our Event Calendar and January GoList for even more fun and enriching programs! 

If you’re suffering from post-holiday blues, don’t fret—there is still plenty of fun to be had for Long Island families during the winter months. From skating and skiing to mini golf and bowling, here are the top 12 things we love to do with the kids when the weather gets cold. And if you need more inspiration, take a look at our Inside Activity Guide.

After the wonderful but hectic rush of the holiday season, January can feel like a breath of fresh air. As we ease back into school and work schedules, it’s also a great time to enjoy some laid-back weekend activities together as a family. The cold air has finally arrived in New Jersey, so bundle up for the Family Photo Scavenger Hunt at the Frelinghuysen Arboretum, explore the outdoors during a Trail Treasure Hunt at Great Swamp or bring your binoculars for a Winter Waterfowl Walk at Liberty State Park. And for more January fun, check out the exciting Electronic Board Game Tournament, expose your little ones to art during Tots on Tour at Grounds for Sculpture or book tickets to see The Berenstain Bears Live: Family Matters. Whatever you decide to do this weekend, we hope you enjoy it with family and friends. For additional activity options, check out our Event Calendar.

Ready, set, bounce! New York has finally scored a kid-friendly trampoline park of its own. Fly High opened on Staten Island earlier this year with an indoor sports gym that offers wall-to-wall trampolines in a center area about the size of an official basketball court. Extra activities like a bungee slingshot and flying foam pit up the thrill for everyone.

We've reviewed a number of trampoline parks in New Jersey, Westchester, Long Island and Connecticut, but this suburban staple had yet to arrive in NYC, so we're excited to welcome Fly High as a dedicated family fun and fitness venue with birthday party packages and even court-side massage chairs for parents in need of a break.

Read on for our parent review of Fly High, including what to expect, what to wear, safety tips and more. Looking for more indoor gyms and play spaces for kids? Check our NYC Indoor Play Guide.