Picture this: You're all set to witness one of the most spectacular meteor showers of the year, but Mother Nature might throw you a curveball with unpredictable weather. That's the thrilling yet unpredictable reality for skywatchers eyeing the Geminid meteor shower peaking this weekend on December 13-14. If you're in the U.S., the forecast could either set the stage for an unforgettable night or leave you shivering at home. Let's dive into the details of what the skies and temps have in store across the nation, and why bundling up might be key to making the most of this cosmic event.
But here's where it gets controversial... Why do some meteor showers, like the Geminids, struggle to capture the public's imagination compared to others? As many have pointed out, if the Geminids occurred during milder winter nights, they could easily compete with the Perseids for top billing. The Perseid shower (check out this guide at space.com for more) shines thanks to its extended viewing period – over five weeks in the balmy summer months of July and August, when folks in the Northern Hemisphere are often on holiday. Those pleasant evening temperatures let everyone enjoy the show without hassle, making the Perseids the go-to meteor event that's become a household name.
The upsides and downsides: Weather outlook for the Geminids in the United States.
This time around, the Geminids will hit their zenith just before dawn on Sunday, December 14. The silver lining for potential viewers is that roughly three-quarters of the country should experience favorable to outstanding observing conditions during the peak.
Looking at the weather charts for early Sunday, a broad high-pressure system anchored over the Central Great Plains is poised to deliver mostly cloud-free skies from Wisconsin southward to Arkansas and northern Mississippi, stretching westward to the Rocky Mountain region.
On the flip side, a chilly front sweeping from southern Texas up to the Atlantic Coast is likely to blanket much of the eastern U.S. with clouds. Plus, a brewing storm off the North Carolina shore might unleash rain or snow across the Middle Atlantic and Northeast.
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Meanwhile, another brisk front pushing in from the Pacific could shroud Washington state and western Oregon in gloomy, damp conditions.
And this is the part most people miss... Even if the stars are shining brightly, there's a major hurdle: Battling the bitter cold!
That's right, brace yourself!
A blast of icy Arctic air is set to descend over the Northern and Central Great Plains, along with the western Great Lakes. Take a peek at the Sunday morning low-temperature map from the National Weather Service. In these areas, actual air temperatures (not factoring in wind chill) are forecasted to plunge below zero, with lows like -1°F (-18°C) in Indianapolis, a frosty -3°F (-19°C) in Chicago, and a bone-chilling -24°F (-33°C) in Fargo, North Dakota.
Even in the Deep South, northern Texas, and large swaths of New Mexico, readings will likely dip below freezing. The most tolerable spots might be the southern parts of California and Arizona, plus sections of northern and central Florida, where skies ranging from clear to partly cloudy will keep temperatures in the relatively cozy 50s Fahrenheit.
As mentioned in a previous Space.com piece (here's a link to learn what you need to know about this year's top meteor shower), and particularly with this year's severe chills, remember you're heading outdoors at the daily temperature nadir. Beneath an open, starry expanse, lounging on a lawn chair or blanket amplifies the cold through radiant heat loss. Unlike other winter activities that keep you moving, stargazing is all about staying still – so prioritize warmth and comfort. Stock up on heavy blankets, insulated sleeping bags, ground sheets, car seats, and pillows. Consider slipping an electric heating pad under your jacket for extra heat.
Everyone gears up differently for a meteor-watching marathon. A quick afternoon snooze, a warm shower, and fresh clothes can help. Sipping hot cocoa, tea, or coffee not only wards off the cold but gives a gentle energy boost. Observing with a buddy is ideal – you can stay alert together and cover more of the sky.
Checking your local predictions
We've added another map from the National Weather Service, applicable for 7 a.m. Eastern Time on Sunday, December 14, showing predicted cloud cover percentages for numerous spots in the contiguous U.S. Lower numbers mean clearer skies. You can sort them into these tiers:
EXCELLENT: Sky cover from completely clear to just a handful of clouds; typically no more than 20%.
GOOD: From a few clouds to scattered cover; usually 20% up to 40%.
FAIR: From scattered to broken clouds; generally 40% up to 70%.
POOR: From 70% all the way to fully overcast.
For the most current local weather tweaks, visit your regional National Weather Service Forecast Office (find yours at weather.gov/srh/nwsoffices – just select your zone on the map for the serving office). Also, grab the newest satellite views of your area via the GOES 16 satellite at star.nesdis.noaa.gov/goes/index.php.
Wrapping up
If the heavens stay clear from Saturday night into Sunday morning, seize the moment for this year's Geminids! A thin crescent moon will grace the predawn sky, but its subtle glow won't interfere much with the meteors. In the evening, the constellation Gemini (explore it further on space.com), the apparent source of these shooting stars (more on meteor showers here), hugs the eastern horizon low. From midnight to about 4 a.m., though, Gemini climbs to a prime position nearly overhead. The impressive hourly rates, packed with bright, leisurely-moving meteors, should inspire enthusiasts to push through the freeze.
Best wishes and bundle up!
Joe Rao is an educator and guest speaker at New York's Hayden Planetarium (amnh.org/our-research/hayden-planetarium). He pens astronomy features for Natural History magazine (naturalhistorymag.com), Sky & Telescope (skyandtelescope.org), and other outlets.
Joe Rao serves as Space.com's skywatching expert, a seasoned meteorologist, and eclipse enthusiast. He teaches and lectures at New York's Hayden Planetarium and contributes to Natural History magazine, Sky & Telescope, and beyond. This Emmy-nominated forecaster (eight times over) covered the Putnam Valley area in New York for more than 21 years. Follow him on Twitter and YouTube for updates on lunar and solar eclipses, meteor showers, and his ongoing adventures. Curious about Joe's current endeavors? Check his Twitter feed.
What do you think – is the Geminids' winter timing a deal-breaker, or does it add to the thrill of the chase? And here's a controversial take: Some argue that modern light pollution makes meteor showers less 'pure' than in the past, potentially favoring summer events like the Perseids. Do you agree, or do winter showers like the Geminids deserve more hype? Share your opinions and experiences in the comments below!
