San Antonio will end 2024 warmer than normal. How hot will it be?

We are on the home stretch and are completing the year 2024. Daily average temperatures indicate this is likely San Antonio’s hottest year on record. Fittingly, these final days of the year will be much warmer than normal, according to the National Weather Service forecast.

Several months this year have already seen historically high average monthly temperatures at San Antonio International Airport, the city’s official climate observation site. During the spring and summer, San Antonio recorded the fourth warmest May and June and the third warmest August. Last fall, the city had its ninth-warmest September, hottest October and third-warmest November on record.

So far in 2024, the average temperature – an average of daily high and low temperatures since Jan. 1 – is 73.4 degrees, which is 3.5 degrees warmer than normal for the year so far and is on track to be the warmest since records began.

After a stormy but weak cold front swept across Texas late Thursday evening, the weather service expects another upper-level low-pressure system to move through south and central Texas on Friday. But rain won’t be a problem.

“At the surface it makes a back door into the southern Edwards Plateau and Hill Country and that’s it,” the weather service said in its forecast bulletin Thursday. “Dry weather conditions will persist. Partly cloudy skies are forecast with highs in the 70s.”

In San Antonio on Friday, you can expect pre-dawn temperatures just below 50 degrees. South Texas is expected to see plenty of sunshine and light winds from the southwest in the afternoon, with temperatures near 80 degrees in San Antonio, possibly as high as 78 degrees.

How warm is the predicted maximum temperature usually? The climatically normal high temperature for December 27th in San Antonio is just 63 degrees, or 15 degrees cooler.

South Texas can expect “very pleasant temperatures with cool nights and unseasonably warm days Saturday through Monday,” the weather service said in its forecast bulletin.

Aided by mild southerly winds, temperatures in San Antonio will begin in the low 50s just before sunrise Saturday, which would be about 10 degrees warmer than normal for this time of year in the Alamo City. Peak temperatures in the afternoon will be 80 degrees and will likely reach 79 degrees before the end of the day.

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With mostly clear skies, nighttime temperatures will remain above 50 degrees again, although the winds will shift to cooler northerly breezes.

“On Saturday, the last of the ongoing series of upper-level troughs (low pressure) and Pacific (cold) fronts is expected, with no impact other than a dry air mass to the west where locally breezy winds may lead to increased fire.” weather conditions,” the weather service said.

Sunday in San Antonio is expected to be sunny, with daytime temperatures once again approaching 80 degrees, this time reaching a high of 77 degrees. Skies should be mostly clear overnight, with predawn temperatures reaching just 52 degrees with prevailing warm southerly winds.

After a weekend of temperatures that were already at least 10 degrees warmer than normal, San Antonio could see record heat Monday, thanks in part to dry southwest winds, forecasters said.

“The maximum temperature records for December 30 will be approached and possibly broken or equaled,” the weather service said. “Current record highs are 83 at KAUS (Austin), KATT (Austin-Bergstrom International Airport), KSAT (San Antonio International Airport) and 86 at KDRT (Del Rio).”

The forecast for San Antonio on Monday so far calls for sunny skies, with southwest winds of 5 to 10 mph helping to lift daytime temperatures to a high of 82 degrees. Meanwhile, overnight temperatures should remain above 53 degrees with clear skies.

“Then a cold front of Canadian origin will move across our area Monday night into early Tuesday/New Year’s Eve and cool temperatures
New Year’s Day,” the weather service said. “Due to a predominantly unusually dry air mass in the long term, no rain is forecast.”

For San Antonio, that means a 10-degree drop in afternoon temperatures Tuesday from the day before – a high of just 71 degrees – and a return to climate-normal temperatures, starting with a low of 46 degrees Tuesday evening, forecasters said.

We start 2025 with a New Year’s high temperature of 64 degrees, just 2 degrees higher than normal.