WEATHER
Weather in San Marcos, Texas
Live readings from the local station — plus what to expect from each season in Central Texas.
San Marcos weather right now
31°C88°F
Clear sky
- Feels like
- 31°C
- Humidity
- 43%
- Wind
- 12 km/h
Next 5 days
Sun
40° 23°
💧 0% chance of rain
Mon
39° 24°
💧 0% chance of rain
Tue
39° 23°
💧 1% chance of rain
Wed
40° 24°
💧 3% chance of rain
Thu
39° 25°
💧 28% chance of rain
Updated: Aug 23, 11:00 PM · Source: Open-Meteo · local Texas time (CST/CDT)
Four seasons in San Marcos
| Season | Months | Average temps | Character |
|---|---|---|---|
| Fall | Sep – Nov | 15–30°C (59–86°F) | Best of the year, sunny, cool nights — the main intake |
| Winter | Dec – Feb | 3–18°C (37–64°F) | Short and mild; a few cold fronts near freezing, snow is rare |
| Spring | Mar – May | 15–30°C | Bluebonnets across the Hill Country, showers, pollen season |
| Summer | Jun – Aug | 25–38°C (77–100°F) | Hot and bright; the 22°C river is where students cool off |
What to pack
Mostly summer/fall clothes
T-shirts, jeans, sneakers — worn 8–9 months a year. Clothing is cheap in the U.S., especially at the San Marcos outlets, so pack only the basics.
One warm jacket is enough
Plus a hoodie or cardigan for short cold snaps. No heavy down coat needed as in the northern U.S.
Sun protection is essential
Sunglasses, hat and sunscreen — the UV index in Texas is high even in autumn.
Swimwear + light rain jacket
The river and pools are part of student life; spring showers are heavy but brief.
Severe weather and alerts
Central Texas is outside the coastal hurricane zone that affects Houston, and tornadoes mostly hit North Texas. The main risks are heavy spring rain causing local flooding and sudden winter cold fronts. TXST sends SMS/email through TXState Alert whenever weather is dangerous or campus closes — sign up in your first week.
Frequently asked questions
Does it snow in Texas?
Snow is rare in San Marcos — once every few years, and it usually melts the same day.
How hot does summer get?
Many days above 35°C and peaks over 38°C. Every building, bus and shop is air-conditioned, and students head to the river to cool off.
Is pollen a problem?
Spring and late winter (cedar fever) bring high pollen. If you are sensitive, bring your usual allergy medication or buy it at a U.S. pharmacy.
Does weather disrupt classes?
Very rarely. Campus only closes when ice makes travel dangerous — announced through TXState Alert.
Pack right from day one
The International Office sends every TXST student a full packing and documents checklist before departure.