Groundhog Day 2021

Groundhog Day Forecast, History, Folklore, and More

January 12, 2021
Groundhog Day Celebration (Resize)
Photo by Anthony Quintano/Wikimedia.

Groundhog Day will be celebrated on Tuesday, February 2! This curious holiday comes from our agricultural past and marks the halfway point between the winter solstice and the spring equinox. Here are some facts and folklore about Groundhog Day. It’s so much more than a wacky weather prediction from a plump marmot!

If Candlemas [February 2] be mild and gay,
Go saddle your horses and buy them hay;
But if Candlemas be stormy and black,
It carries the winter away on its back

When Is Groundhog Day?

Groundhog Day always occurs on February 2. In the Northern Hemisphere, this date traditionally marks the midpoint between the winter solstice in December and the spring equinox in March. 

In 2021, Groundhog Day will be celebrated on Tuesday, February 2.

Groundhog Day Dates

Year Groundhog Day
2021 Tuesday, February 2
2022 Wednesday, February 2
2023 Thursday, February 2
2024 Friday, February 2

Groundhog Day 2021 Forecast: Will Phil See His Shadow?

On early February 2, the nation (OK, a few of us) will watch with bated breath as Punxsutawney Phil emerges from his burrow. It’s said that if Phil encounters his shadow, we’ll be in for six more weeks of winter weather, but if he doesn’t, then spring is just around the corner.

So which will it be this year? Keep an eye on our long range weather forecasts to see our predictions for your area!

Groundhog in snow. Photo by Brain E. Kushner/ShutterStock
Photo by Brain E. Kushner/ShutterStock

How Groundhog Day Works: A Holiday Rooted in Astronomy

We all know the legend of the groundhog: If he sees his shadow on this day, there will be six more weeks of wintry weather; if he doesn’t, then spring weather is right around the corner.

However, what most don’t realize is that Groundhog Day is actually rooted in astronomy.

The date is tied to the movement of the Earth around the Sun; it marks the approximate halfway point between the winter solstice and the spring equinox! (Note: This is true for the Northern Hemisphere. In the Southern Hemisphere, Groundhog Day marks the halfway point between the summer solstice and the autumnal equinox.)

How did it all start?


The History of Groundhog Day


Originally, Groundhog Day was a Celtic festival marking the year’s first cross-quarter day, or a midpoint between seasons. Read more about the ancient Celtic calendar here.

Celebrated at the beginning of February, the day was called Imbolc—a term from Old Irish that is most often translated as “in the belly”—a reference to the soon-to-arrive lambs of spring. The celebration of Imbolc signaled that the Sun was halfway through its advance towards the spring equinox, and the season of new birth and light was on the horizon.

This day has also been called St. Brigid’s Day, which stems from a mixing of figures and traditions from pagan and Christian beliefs. The Celtic goddess Brigantia is associated with dawn, light, and spring, which are qualities later associated with Brigid of Kildare, a Christian saint (and one of Ireland’s patron saints).


Although it is distinct from Imbolc, the Christian festival of light Candlemas is also observed at this time of year (February 2). The name refers to the candles lit that day in churches, which celebrate the presentation of the Christ Child in the temple of Jerusalem. 

Groundhog Day has a rich history based on a deeper meaning; it speaks to the triumph of spring over winter—and birth over death. Again, note the appearance of light over dark with the appearance of candles and dawn—and, of course, the spiritual light of a holier presence. 


Why a Groundhog?

So how does the groundhog fit into this ancient festival? Historically, a groundhog wasn’t the animal of choice: a bear brought the forecast to the people of France and England, while those in Germany looked to a badger for a sign. 

In the 1800s, German immigrants to Pennsylvania brought their Candlemas legends with them. Finding no badgers but lots of groundhogs (also called woodchucks or whistlepigs), they adapted the New World species to fit the lore.

Today, that lore has grown into fun winter festivals, with Punxsutawney Phil and furry fellows in other states presiding.

How Accurate Is the Groundhog’s Prediction?

According to researchers, the groundhog has accurately predicted the coming of spring only 39% of the time (at the time of this writing).

Of course, it’s all in good humor. As the Almanac says, “If he sees his shadow, we’ll have six more weeks of winter; if he doesn’t, it’ll be six weeks until spring.” Get it?

No matter what the percentage, it’s a fun time had by all!

Groundhog peaking up

What Is Groundhog Day’s Connection to Weather?

Since the traditional celebration anticipated the planting of crops, a central focus of the festivities was the forecasting of either an early spring or a lingering winter.

Sunshine on Candlemas was said to indicate the return of winter. Similarly…

When the wind’s in the east on Candlemas Day,
There it will stick till the 2nd of May

  • It was not held as a good omen if the day itself was bright and sunny, for that betokened snow and frost to continue to the hiring of the laborers 6 weeks later on Lady Day.
  • If it was cloudy and dark, warmth and rain would thaw out the fields and have them ready for planting.

Our Groundhog Day is a remote survivor of that belief. Though we recognize animal behavior isn’t the only way to judge planting dates, the tradition continues, often with a wink and a smile. 

Want to see more accurate planting dates? Check out our Planting Calendar to find dates for starting seeds, transplanting, and harvesting in your area.


Groundhog Day and Candlemas Lore

If Candlemas [February 2] be mild and gay,
Go saddle your horses and buy them hay;
But if Candlemas be stormy and black,
It carries the winter away on its back

Just half your wood and half your hay,
Should be remaining on Candlemas Day

On Candlemas Day,
The good goose begins to lay

When the wind’s in the east on Candlemas Day,
There it will stick till the 2nd of May

On Candlemas Day, if the thorns hang a drop,
You are sure of a good pea crop

Wait, What Is a Groundhog?

The groundhog, also known as a woodchuck or whistlepig, typically makes its home in the brambles and thickets that grow where forests meet fields. There, it digs burrows between 4 and 6 feet deep and up to 40 feet long—removing as much as 700 pounds of dirt in the process. 

Like its squirrel relatives, the groundhog eats leaves, grass, flowers, bark, and twigs and climbs trees to reach tender buds or fruit. This furry animal will also go after just about any crop, favoring beans, peas, and carrot tops. It may even take a bite out of every squash or pumpkin in a row, instead of consuming just one. See how to deter groundhogs in the garden.

But the mischief-maker is not all nuisance. Its burrows allow air and water to penetrate the soil and, when abandoned, they become homes for opossums and other small animals. The groundhog itself serves as food for larger creatures, such as bobcats, foxes, and wolves.

With hungry predators on the prowl, it takes courage for a groundhog to emerge from its hole every February to make its forecast. It must take its job very seriously!

What’s the Difference Between a Groundhog and a Woodchuck?

Every year, we’re asked if a groundhog is the same thing as a woodchuck. Yep. There’s no difference (taxonomicaly).  It’s the same borrowing rodent, Marmota monax. The word you use is more of a reflection of where you live. In cold New England, where we can pretty much count on wintry weather no matter what the marmot thinks, the term “woodchuck” is often used. The word comes from a Native American word. The animal’s Algonquin name is wejack or wuchak. What do you call it?

What’s the Weather Forecast?

For a forecast that’s more than folklore, see the Almanac’s long-range predictions or your 5-day weather forecast!


Reader Comments

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Groundhog Day

Six more weeks of Winter or 42 days until Spring. Figured that one out when I was Haven't figured out yet why the movie portrays repetition

Groundhog Day/Candlemas Day

Paula, thank you for the information about removing the Christmas decorations and tree. I had known about having all greenery taken down by Epiphany (January 6), but didn't know about February 2 as the last chance (although I sometimes didn't get everything down until close to that date!). Also, since 2014, when my grandson was born on February 2, I make an even bigger deal of it. Jon was ecstatic when we told him it was a "holiday", when he was about 3 years old. He goes around bragging that his birthday is on Groundhog Day! Turning 6 this year (2/2/20). Wow, just thought about 2/2/22, which will be his 8th birthday! St. Blaise Day is 2/3, the traditional day to have throats blessed (in the Catholic tradition).


There is a longstanding tradition connected to Candlemas. Although it is customary to take down the Christmas tree and other decorations following the festivities of Twelfth Night, that is, the 12th Day of Christmas (Jan 5) or Eve of Epiphany, if you don't do so at that time, you're supposed to leave them up until your second - and last! - chance: Candlemas. If you don't *then* officially end the Christmas season, you have no one but yourself to blame should misfortune arrive. Thanks for the reminder of the date. i better get going!

Groundhog Day

The problem with modern day Groundhog Day is that the animals they are using are basically domesticated. I have a groundhog in my yard, he lives in a hollow tree trunk, observing him or her over the years - he doesn't emerge from his burrow until there is at the least a couple crocus flowers for him to munch on. If there is no green grass, or flowers to eat we don't see him/her until spring. Never seen him in the cold weather at all. Which makes me wonder why Groundhogs Day is in February, it's not natural to them. Half the time the Predicting Groundhogs run back into there enclosure because there are too many people and noise, not because he saw his shadow. Anyway it's fun to think it will work, he does have a 50 /50 chance to be right - good odds.

Why groundhog?

I have been searching for the answer, to no avail.
Why do we need a groundhog for the forcast on feb 2? Do not we all see our shadows on a sunny day?
How does the groundhog contributes to the forcast if it is based solemnly on the cloudness of tbe day?

I appreciate if someone can answer my question
Thank you,

Groundhog Day

The Editors's picture

Hi Helen, Groundhog Day today is a bit of folk humor, not to be taken seriously. It may be that the animal is frightened by its shadow and, thus, retreats back inside. 

“As the light grows longer 
The cold grows stronger 
If Candlemas be fair and bright 
Winter will have another flight 
If Candlemas be cloud and rain 
Winter will be gone and not come again 
A farmer should on Candlemas day 
Have half his corn and half his hay 
On Candlemas day if thorns hang a drop 
You can be sure of a good pea crop.”

Favorite Holiday - Ground Hogs Day

Ground Hogs Day is my favorite holiday. No Stress Holiday. Something to look forward in celebrating the dead of winter. This date has been on the calendar long before Super Bowl.

Ground Hogs

So true...Ground Hog Day has been on the calendar long before the Super Bowl. While I do not celebrate Ground Hog Day...I think it is nice that you do. Food for thought for important traditions of long ago...(and NOT the super bowl)! Your comment is inspiring me to take the time to slow down, to pay attention to other traditions...some my mom taught me!
Thanks Virginia...continue to enjoy your day!