Cooler air was moving over Alabama on Tuesday morning, and more is on the way.

Temperatures as of 6 a.m. Tuesday ranged from the downright cold 39 degrees in Gadsden and 43 in Haleyville to the warmer 62 degrees in Mobile, according to surface observations from the National Weather Service.

Temperatures today are expected to climb only into the 60s in north Alabama. Central Alabama is expected to peak in the upper 60s to low 70s, and south Alabama will be warmer with highs around 80 degrees, according to forecasters.

Here are the expected high temperatures on Tuesday:

Tonight will be chilly statewide as a reinforcing shot of cooler air arrives, according to the weather service.

Lows tonight (shown at the top of this post) will range from the upper 30s in north Alabama, the upper 30s to low 40s in central Alabama and the upper 40s to around 50 in south Alabama, which will finally feel that cooler air.

Wednesday could be the coolest day of the week. Highs on Wednesday might stay in the 60s for much of the state and even in much of south Alabama.

Here are the expected high temperatures for Wednesday:

Then comes what could be the coldest night of the week. Lows from Wednesday night into Thursday morning are expected to fall into the 30s for a large part of Alabama. The southernmost part of the state may be able to hang onto the 40s:

The weather service said frost advisories will not be out of the question for parts of northern Alabama this week but hadn’t issued any as of Tuesday morning.

Forecasters also are not expecting any rain over the next week, which could cause drought conditions in Alabama to get worse.

Temperatures are expected to begin to moderate starting on Thursday, with warmer weather expected over the weekend.