Daylight through the yearLongest day (Jun 21): 14 h 4 min6:31 am – 8:35 pmShortest day (Dec 21): 10 h 13 min7:23 am – 5:36 pm
Sun todaySunrise –Sunset –
ClimateWarmest month August: highs 97°F, lows 74°FColdest month January: highs 62°F, lows 39°F37 in of rain a year, on about 48 dayswettest month MaySnow is rare117 days above 90°F, 20 nights below freezing in a typical yearSource: NOAA 1991-2020 Climate Normals, San Marcos station, 2 mi away
Nearby landmarksTexas State University San Marcos Campuscollege · 2.9 miSpring Lakelake · 3.2 miWeismuller Springspring · 3.0 miScrutchin Lakelake · 4.1 miSan Marcos Springsspring · 3.4 miBlanco Riverriver · 4.5 miSource: USGS Geographic Names Information System
Parks and public landsUpper Purgatory Buienature preserve · under a mile · 117 acresUpper Purgatory Barkernature preserve · under a mile · 299 acresSpring Lakestate recreation area · 3.1 mi · 52 acresTexas State University - San Marcos Golf Coursestate recreation area · 3.4 miCanyon Recreation Arearecreation area · 13.6 mi · 11,547 acresLockhart State Parkstate park · 17.0 mi · 264 acresSource: USGS Protected Areas Database (PAD-US)
Earthquakes3 of magnitude 3 or more within 50 miles since 19700 of magnitude 4+, 0 of magnitude 5+Largest: magnitude 3.1 on 14 May 201948 mi away, near Smiley, TexasMost recent: magnitude 3.0 on 1 Jan 202450 mi awaySource: USGS Earthquake Catalog
Natural hazardsOverall risk Relatively ModerateHays County, TX, compared with all US countiesHigher-risk hazardsHail Relatively HighTornado Relatively HighLightning Relatively HighWinter weather Relatively HighSource: FEMA National Risk Index (county level)
Air quality44% of days had good air in 2025159 of 365 days measured200 moderate, 6 unhealthy for sensitive groups daysMedian index 53, worst day 129main pollutant: fine particles (PM2.5)Source: US EPA Air Quality Index, nearest monitors: Travis County, TX, 30 mi away
Drinking waterCity of San Marcosserves 72,970 people from surface water1 health-based violation since 2021latest Oct 2025: trihalomethanes (TTHM), maximum contaminant levelSource: US EPA Safe Drinking Water Information System, largest system serving the town
Elevation686 ft209 m above sea levelSource: USGS 3D Elevation Program
Local servicesHospitalCHRISTUS Santa Rosa Hospital - San Marcos3.1 miPost officeSan Marcos Post Office1.8 miTown hallSan Marcos City Hall3.3 miPoliceSan Marcos Police Department2.5 miFire stationSan Marcos Fire Department Station 31.8 miSource: USGS National Structures Dataset
SchoolsWithin 2 mi6 schools2 elementary, 1 middle, 3 otherElementaryCrockett Elementary School1.4 miElementaryHernandez Elementary School1.5 miSchoolWonderland School1.6 miCollegeTexas State University San Marcos Campus2.9 miSource: USGS National Structures Dataset
Getting aroundAirportAustin Bergstrom International Airport AUS29 miInterstateI-353.7 miUS highwayUS 18318 miAmtrakSan Marcos, TX SMC2.6 miCoachSan Marcos CARTSFlixBus2.6 miSources: OurAirports; US Census Bureau TIGER roads; Bureau of Transportation Statistics NTAD
Distances in these cards are measured from the centre of the 78667 ZIP area.
