Monday's 5 A.M. Weather File: Rain at 96 Percent in San Antonio, High Cut to 63, Flood Watch Through the Morning
The station's live feed at 5 a.m. puts San Antonio at 59.4 degrees in rain and Monday's chance at 96 percent — up from 90 before dawn — with the high cut to 62.8. Most of the region takes 1 to 3 inches through Monday night, the Hill Country has already seen 3 to 5 in places, and Tuesday's chance falls to 16 percent.
Monday's standing 5 a.m. file is the wettest reading of the night. The station's live weather feed — the twanews.com weather endpoint, read directly this run at about 5:05 a.m. — showed San Antonio at 59.4 degrees, feeling like 58.2, under rain (weather code 61), and Monday's full line scored at rain (code 63) with a high of 62.8, a low of 59.2 and a precipitation probability of 96 percent. Both headline numbers moved again since the 3 a.m. file: the rain chance rose from 90 percent to 96, and the high was revised down from 64.2 to 62.8 — a cold, grey, all-day rain for the school run and the morning commute, on ground that has been soaking since Saturday.
The totals behind the flood watch are now published regional figures, not forecasts alone. The T-SPAN forecast file read in full this run — carrying the KSAT forecast — puts most areas at 1 to 3 inches of rain through Monday night, with ponding on roads and localized street flooding as the stated impacts; several locations in Edwards, Real and Bandera counties have already picked up 3 to 5 inches, prompting a Flash Flood Warning for portions of the Hill Country and reports of flooded low-water crossings, while San Antonio's own totals were lighter, with some spots over an inch. Rain will not fall continuously at every location, the file says, but periods of rain and occasional heavier showers run through Monday evening, with highs mostly in the upper 50s to lower 60s under thick cloud.
The turn is close. The feed scores Tuesday at rain code 61 but with the chance down to 16 percent, a high of 67.2 and a low of 60.3; the T-SPAN file has the storm system exiting Tuesday with lingering showers east of I-35, then drier air Wednesday behind a cold front, sunshine and highs back in the 70s, and cooler mornings late in the week that could drop into the 40s. The station feed agrees on Wednesday: overcast and essentially dry at 75.9 with a 14 percent chance, then Thursday 76.4 at 2 percent, Friday completely clear (code 0) at 69.9, Saturday overcast at 69.4 with a 15 percent chance, and next Sunday showers back at 64.8 with the chance at 38 percent. The 5 a.m. bottom line: Monday is a 96-percent rain day under a flood watch — drive it that way — and it is the last full rain day of this system.
