New York, NY 62° Los Angeles, CA 70° Chicago, IL 66° Houston, TX 77° Miami, FL 81° Phoenix, AZ 71° Seattle, WA 47° Denver, CO 50° Toronto, ON 59° Vancouver, BC 46°
WeatherLive › Texas › San Marcos

San Marcos, TX Weather (78666)

Today Hourly 10-Day Weekend Monthly Radar Air Quality Climate
Current WeatherSan Marcos · 12:10 PM CDT
80° | 61°
74°F
Feels like 70°
Mostly cloudy
WindSE 12 mph · Gusts 15 mph
Precip16% · –
Humidity58% · Dew point 58°
UV index5 Moderate
Air Quality48 Good
Pressure30.27 inHg
Visibility6 mi
Sunrise / Sunset7:40 AM · 6:51 PM · 11h 11m

Weather map — San Marcos

Full radar →
Now
77°
12%
12 mph
13:00
79°
11%
9 mph
14:00
79°
10%
11 mph
15:00
80°
10%
11 mph
16:00
80°
10%
8 mph
17:00
79°
10%
11 mph
18:00
76°
11%
9 mph
19:00
74°
12%
7 mph
20:00
69°
12%
9 mph
21:00
68°
13%
8 mph
22:00
70°
13%
7 mph
23:00
66°
15%
8 mph
00:00
64°
16%
7 mph
01:00
65°
17%
4 mph
02:00
60°
20%
4 mph
03:00
59°
22%
2 mph
04:00
61°
18%
2 mph
05:00
57°
19%
3 mph
06:00
56°
13%
4 mph
07:00
58°
15%
3 mph
08:00
56°
18%
4 mph
09:00
62°
5%
4 mph
10:00
69°
4%
5 mph
11:00
72°
10%
8 mph

Today · Sun 10/25

High 80°
16% / –

Mostly cloudy. Winds SE at 12 mph.

Tonight · Sun 10/25

Low 56°
13% / –

Mostly cloudy. Winds E at 8 mph.

Tomorrow · Mon 10/26

80° | 56°
13% / –

Mostly cloudy. Winds SE at 9 mph.

7-day trend

San Marcos · temperature + precipitation

10-day forecast

Updated 12:10 PM

Details & indices

Wind
12 mph SE
Gusts 15 mph
Humidity
58%
Dew point 58°
Pressure
30.27 inHg
Rising
UV index
5 — Moderate
High today
Air Quality
Good
AQI 48 · US EPA
Allergy
None detected
—
Visibility
6 mi
Clear view
Allergy — San Marcos

🌿 Conditions right now

View all →
Birch
None
Grass
None
Oak
None
Alder
None
Hazel
None
Mugwort
None
Ragweed
None

Sun & moon

Sunrise7:40 AM
Sunset6:51 PM
Length of day11h 11m
Moonrise6:22 PM
Moonset7:05 AM
Moon phase🌕 Full Moon · 100%
Next full moonOct 25 Hunter's Moon
Latitude29.8833°N
Longitude-97.9414°E

Water temps nearby

View all →
No beaches within 50 miles
🌤️No rain expected in the next 90 minutes
Now+30+60+90 min
Minute-by-minute precip · HRRR nowcast

Daily planner

computed from today's forecast
Laundry day
Great
Line-drying weather
Grilling
Great
Fire up the grill
Running
Fair
Lace up outside
Patio
Fair
Dinner outdoors
Nearby places in Texas
Houston
Mostly cloudy
77°
San Antonio
Mostly cloudy
75°
Dallas
Mostly cloudy
72°
Fort Worth
Mostly cloudy
73°
Austin
Mostly cloudy
75°
El Paso
Mostly cloudy
68°
NBM + global weather models
Updated: 12:10 PM
San Marcos, TX · Elev 617 ft · 29.88°N, 97.94°W · Texas · Forecast computed for these exact coordinates
Powered by NWS/NOAA guidance, multi-model forecasts and official environmental feeds · NOAA/NWS · EPA AirNow · MET Norway · global models
Updated: 12:10 PM