Autumnal equinox arrives Saturday

  • The Earth's axis is upright twice a year at the vernal and autumnal equinoxes.
The Earth's axis is upright twice a year at the vernal and… (Przemyslaw "Blueshade"…)
September 21, 2012|By Scott Dance, The Baltimore Sun

Summer 2012 will be officially in the books as of 10:49 a.m. Saturday, and it will end with one small taste of summer-like weather before the fall weather we have flirted with sets in further.

It won't be as hot as it has been much of the summer, but Saturday is expected to be warmer and more humid than it has been lately. Highs are expected in the low 80s with a 60 percent chance of passing storms in the evening.

There is a 15 percent chance that storms could be severe, according to the National Weather Service's Storm Prediction Center.

After that, temperatures will dip back down, with highs Sunday and early next week topping out around 70 degrees.

The autumnal equinox means that the earth's axis has reached an upright position and is beginning to lean the northern hemisphere further away from the sun. While the equinox means night and day reach an equal 12 hours at the equator, that phenomenon doesn't occur here for a few more days.

Have a weather question? E-mail me at or tweet to @MdWeather.

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