Fascinating map! Thanks for sharing.

Here the last expected frost date is April 15, but years ago I planted some things near the end of that month. The first week of May we had a killing frost, and I lost all of it.

Science can only predict based on data gathered, but Mother Nature keeps giving us surprises.

Most garden veggie seeds sprout at around 70 degrees. After they're up they can handle cooler temps but it takes a week or so of the 70 degrees to get them sprouted.

Soil temps are more important than air temps.

Glad you like it! I am stalking my area. :)

Do flower seeds also do best at soil temps of 70, or lower?

No joke on the surprises. These last few weeks have been surprises!

Surprising to me there are no soil temps showing for my entire county of Mecklenburg yet Raleigh area has many reports.
Wonder why that is?
Don't know how to rely on such a map since there's no way of knowing if the readings are recorded in full sun or what time of day.
Even the soil moisture readings have got to vary all over the place in one yard alone. But it was interesting.

The sites must vary. Sorry yours does not give much. Mine gives soil temp reading averages by the hour (do not know about sun vs shade, though). :)

Wow, it's got temps and data all the way down into my area!! Great Data, thanks so much for sharing the link!

Welcome! :)