Yep. That’s roughly a month away.
Colorado: the snow changes from a few inches of powder overnight to a couple feet of heavy wet snow over the weekend. If you didn’t have a calendar or any other way to mark the length of days, it would be the massive blizzards that tell you spring is upon you.
I came in to say the same the that The Great Sun Jester just posted, so I’ll mention that growing up in Northwest Washington, Skunk cabbage was our earliest indicator that spring was right around the corner.
It’s still light at 5PM.
Grass
Robins
Daffodils
Southern Hemisphere?
Spring is officially here. 
Two days ago, we had sufficient snowmelt to be able to see the edges of the front yard, as well as some strong sun.
The winter aconite is blooming and several snowdrops opened.
The crocus are blooming in the grass in the front yard, though most of it is still snow covered.
And as I look at the window just now to see how much snow cover there still is in the neoighbors back yard, I realize that it is snowing!!
I guess I should change that to “Spring was officially here.” For a minute at least. 
Our hens have begun laying an occasional egg.
I had the local cardinal calling in my yard last week.
The snow has melted enough so that I can see the daffodils, snowdrops and crocuses pushing through the earth.
The birds are singing their mating songs.
And, sadly, the amount of road kill is increasing.
When the Snowbirds pack up and leave and the Spring Breakers start rolling in. (March.) We’re a beach town.
Well, yay! 'cuz I just saw a half dozen redwings in my yard the other day! and though I’ve seen robins come out of hiding early before, this is the first time I’ve seen redwinged blackbirds so early! And a week or two ago, I even spotted a few eastern (rufous-sided) towhees - and I’ve never seen towhees in winter before!
I thought this thread was "early hamburgers of spring. " Mmm…early hamburgers. I’d better eat something. I’m new here. Are purposely stupid comments allowed ? 'Cause those are some of my favorite. I have trouble staying serious, at times.
The state flower, the California Poppy, starts bursting forth at all sorts of random locations, like highway meridians. Usually mid-February, so one of the earlier harbingers. I love 'em.
And flowering ornamental fruit trees, like cherries, go crazy in February.
Personally, I frown on humor/humour.
Crocus at the back door, roses have leaves.
Wild onion has sprouted all around town. Some of them are coming close to a foot tall by now. Somehow they seem a bit early this year.
Here in Minnesota, the robins migrate unless it has been a mild winter and they are able to find food. That is certainly not the case this year. The first one I saw and heard was just recently. Now, with our third polar freeze, I am a bit worried about them.
But I see signs that the ground is warming up despite the cold air. So maybe they have been able to find a few warmish pockets of air and food as well.
Ok. Why the two spellings ? Are You British ? Not that that matters.
I wasn’t sure my comment even qualified. No, it didn’t. I did go and get a hamburger.
Nothin’ funny about that, is there ? Nothing notable, either.
It will take a while to get the hang of this place.
When the weather gets warm enough that there’s at least half a column of garage sales listed in the want ads, then you know that spring is on the way. Pay no attention to the groundhog.