At long last, autumn weather is descending on New York. But now — after swimsuit season and before the New Year’s resolutions are made — is when workout regimens so often wane. Since dropping temperatures make the prospect of walking to the gym or running in the park increasingly daunting, here are some suggestions for staying in shape this fall from the comfort of home.

Turn on Your iPod

No workout partner, no problem. You can exercise at home alongside a fitness podcast, dozens of which are available free from iTunes. Some of these downloads are audio-only — requiring, in the case of those by yogadownload.com, users to know the basic vocabulary of the yoga practice; others have a visual component. A midtown exercise studio, Pilates on Fifth, produces one of my favorite video podcasts. In the series, studio owners, twin sisters, and former Radio City Rockettes Katherine and Kimberly Corp provide a half hour total body mat workout, as well as 10-minute sessions that isolate specific muscle groups. About once a week, the Corp sisters upload a two-minute segment that explains in detail a single exercise, such as “rolling like a ball” or “plank with leg lifts.”

Turn on Your Television

Watching television can be a way to pass time that might otherwise be spent exercising. But if it’s Fit TV you’re watching, the tube can be a way to get in a workout within feet of your sofa. Fit TV features instructive shows on a wide range of exercise regimens, from cardiokickboxing (“Gilad’s Bodies in Motion”) to belly dancing (“Shimmy”) and yoga (“Namaste Yoga”). There’s also programming to help keep you motivated between workouts. “Art of the Athlete” profiles Olympic competitors and other world-class athletes, while each episode of “Ultimate Goals” follows an individual striving to meet a fitness target through a rigorous eight-week training regimen.

Invest in New Equipment

While you may not have room for a treadmill or a bench press in your family’s classic six, some compact pieces of exercise gear, such as resistance bands, can be easily folded or rolled up, and stashed in the closet (or under the bed). Two pieces of equipment seem perfectly suited for New York living. In the Beinjoy mat and cushion set ($100 at beinjoy.com), thicker than most roll-up mats but just as sturdy, hard herringbone floors meet their match. And Bowflex’s SelectTech Dumbbells cater to the space constraints of New Yorkers. With one Select-Tech 1090 handheld dumbbell ($599 a pair at bowflex.com), you can lift any 5 lb. increment between 10 lbs. and 90 lbs. — just by adjusting a dial.

Hire a Trainer

If you need that extra push that only a personal trainer can provide, this city has a variety of options, at price points high and low. New York City trainer Terri Walsh of TW Training NYC offers “online personal training.” For as little as $75 a month, she will devise a bespoke regimen, which includes descriptions and photographs of each exercise, biweekly phone conversations with the trainer, and e-mail coaching (online-personaltraining nyc.com). In-person, in-home sessions are pricier: A package of 10 sessions with Ms. Walsh starts at $3,000, while Homebodies (homebodies.com), a city company that dispatches trainers to your home, workplace, or gym, charges $150 for an initial consultation, and $110 for each subsequent hour-long session.