SAN ANTONIO — The Rock 'n' Roll Marathon's San Antonio farewell is shaping up to be a soggy affair.
After a cloudy, chilly and damp Tuesday in the Alamo City, residents should prepare for more of the same the rest of this week and into the weekend, when thousands of runners will take to downtown streets. It will mark the last time the Rock 'n' Roll Running Series visits San Antonio for the foreseeable future as the city plans its own signature running event for 2025 and beyond.
Runners and walkers who prefer chilly weather should be happy: The temperature will be hovering around 50 degrees when the 5K and 10K starts at 7:30 a.m. Saturday, and about that cool as well at 7 a.m. Sunday for the start of the marathon and half-marathon.
But both mornings are also expected to bring patchy drizzle and scattered showers across a parched San Antonio region. Heavier rain will stick to the east, where three-plus inches of rain are expected in parts of the Houston area.
Day-by-day forecast
Tuesday night: Low of 54 degrees. Overnight showers are possible with a 40% chance of rain across the Alamo City area. Slight northeasterly winds of 5 mph.
Wednesday: High of 66, low of 57. Morning showers possible, especially before 9 a.m. Cloudy conditions stick around but rain chances dwindle in the afternoon. Northeasterly winds of 5 mph.
Thursday: High of 65, low of 48. Wind gusts pick up, topping out at 15 mph on a day when showers and thunderstorms are possible throughout the day. 40% chance of rain for San Antonio.
Friday: High of 58, low of 47. Afternoon highs keep getting lower as this cool December week goes on. Cloudy conditions persist with a 40% chance of showers and thunderstorms. Northeasterly winds top out at 10 mph.
Saturday (5K/10K Day): High of 60, low of 50. There will be a 50% chance of patchy drizzle and scattered showers in San Antonio as cloudy conditions persist. Northeasterly winds of five to 10 mph.
Sunday (Marathon/Half-Marathon Day): High of 67, low of 55. More scattered showers amid mostly cloudy skies as the sunshine avoids runners on Rock n Roll Marathon Day. Southerly winds of five to 10 mph.
Monday: High of 73, low of 49. Warmer temperatures return, as well as sunshine. As of now, there's a 0% chance of rain to start next week in San Antonio.
