Thursday morning was very cold across Alabama, with lows ranging from the teens to 20s across the state.

One of the lowest temperatures overnight was 15 degrees in Gadsden, according to data from the National Weather Service.

Other cold spots were Decatur, Haleyville and Talladega at 17 degrees.

Here are the lowest temperatures from midnight until 6 a.m. (but not official lows) Thursday courtesy of the National Weather Service:

* Alexander City: 27 degrees

* Anniston: 21 degrees

* Auburn: 22 degrees

* Birmingham: 19 degrees

* Decatur: 17 degrees

* Demopolis: 23 degrees

* Dothan: 26 degrees

* Evergreen: 25 degrees

* Gadsden: 15 degrees

* Haleyville: 17 degrees

* Huntsville: 19 degrees

* Mobile: 27 degrees

* Montgomery: 24 degrees

* Muscle Shoals: 22 degrees

* Ozark: 26 degrees

* Prattville: 23 degrees

* Talladega: 17 degrees

* Troy: 22 degrees

* Tuscaloosa: 21 degrees

The weather service expects highs to reach only the 40s again across Alabama as cold air remains in place. (See the high temperature forecast for today at the top of this post.)

A developing weather system will bring slightly warmer temperatures tonight to the state, but also the possibility of ice and snow, especially for north and central Alabama.

Winter storm warnings and winter weather advisories will go into effect at midnight for the northern half of the state.

Here are the expected lows tonight, when that precipitation will begin moving in:

It will remain very chilly through the weekend, with Saturday night-Sunday morning looking very cold as well. In fact, there’s a chance Sunday morning will be a degree or two colder than today for some areas. Here is the forecast for Saturday night-Sunday morning:

Forecasters expect next week to remain on the chilly side as well, with higher probabilities for below-average temperatures. Here is the Climate Prediction Center’s eight- to 14-day temperature outlook for Jan. 16-22: