11-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Night
Overcast
14°
Feels like 14°
Wind↑ N 16 km/h
Gusts29 km/h
Humidity 82 %
💧 0.1 mm
Afternoon
Partly cloudy
19°
Feels like 19°
Wind↑ N 11 km/h
Humidity 59 %
12-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Night
Clear sky
14°
Feels like 14°
Wind↑ E 4 km/h
Humidity 78 %
Afternoon
Clear sky
20°
Feels like 22°
Wind↑ SSW 8 km/h
Humidity 54 %
13-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Night
Clear sky
15°
Feels like 15°
Wind↑ SSE 7 km/h
Gusts14 km/h
Humidity 74 %
Afternoon
Mainly clear
21°
Feels like 23°
Wind↑ SSE 18 km/h
Humidity 57 %
14-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Night
Partly cloudy
16°
Feels like 16°
Wind↑ SSE 15 km/h
Gusts45 km/h
Humidity 81 %
San Antonio forecast in charts · next 7 days
The week ahead: highs and lows
▲ This week runs +5.3° warmer than usual
Highs Lows Usual for the season (1991–2020 average)
Hourly detail
Temperature (°C) Rain (mm) Wind (km/h)
San Antonio climate: what a normal year looks like
Afternoons reach 30 °C or more from June to September; the typical peak is 35 °C in August.
The hottest stretch is August, when afternoons average 35 °C; the coldest is January, when nights average 6 °C. Between those two months the average temperature changes by 18 °C.
There is no real dry season: monthly rainfall stays between 52 mm and 107 mm on average.
Forecast highs for the coming week average 26 °C, 3 °C cooler than a normal October (29 °C).
30-year averages (1991–2020)
Month
Typical high
Typical low
Rainfall
Jan
17 °C
6 °C
59 mm
Feb
20 °C
9 °C
60 mm
Mar
23 °C
12 °C
81 mm
Apr
26 °C
15 °C
81 mm
May
30 °C
19 °C
107 mm
Jun
33 °C
23 °C
73 mm
Jul
35 °C
23 °C
54 mm
Aug
35 °C
24 °C
52 mm
Sep
32 °C
21 °C
81 mm
Oct
29 °C
17 °C
85 mm
Nov
22 °C
11 °C
70 mm
Dec
17 °C
6 °C
64 mm
Whole year
27 °C
16 °C
870 mm
Source: our own processing of the ERA5 reanalysis (Copernicus/ECMWF) for 29.42° N, 98.49° W, 1991–2020. ERA5 averages over a 0.25° grid (about 25 km): hills, a coastline or the heat of the city itself can shift local values by a degree or two.
Air you breathe in San Antonio: pollution and pollen
1/6
Good
European Air Quality Index (EAQI), from Copernicus CAMS
PM2.57µg/m³
PM1010µg/m³
Copernicus CAMS model, updated several times a day.
Rain radar around San Antonio
Rain observed over the last two hours by official weather radars around San Antonio, followed by the radar forecast for the next hour where the weather service provides one.
Rain radarLast two hours, then forecast where available · drag the timeline
Moon over San Antonio
Waning gibbous
87 % illuminated · 18.3 days
Rise 19:37 Set 09:40
Fri30/1079%
Sat31/1069%
Sun1/1159%
Mon2/1149%Last quarter
Tue3/1138%
Wed4/1128%
Thu5/1119%
Fri6/1112%
Sat7/116%
Sun8/112%
Mon9/110%
Tue10/111%New moon
Moonrise and moonset in local time (America/Chicago); phase and lit fraction from a synodic calculation.
Look up a past day in San Antonio
Curious about the weather in San Antonio on a given day? Choose a date: we read it from the ERA5 reanalysis (ECMWF / Copernicus C3S), which runs until about a week ago.
San Antonio weather at a glance
This page gathers everything about the weather in San Antonio, Texas: conditions now, the forecast for each part of the day and the trend for the coming week. At the moment the sky is “rain”, it is 21 °C (feels like 30 °C) and the wind blows at 11 km/h.
Expected range today: 20 °C to 24 °C and around 11 mm of rain; keep an eye on thunderstorms. The forecast comes from the AtmoAtlas engine, which combines ECMWF-AIFS, NOAA GFS and DWD ICON, adjusts cloud cover with METAR reports and uses convective energy (CAPE) to flag storms.
Use the San Antonio forecast in your own website or app: one JSON call returns weather, air quality, tides and sun and moon times. The free key needs no card.
