Current Conditions

San Marcos, Texas

96°F36°C

Hot

Feels like102°F39°C

Wind

SSW 5 mph8 km/h

Humidity

41%

Cloud Cover

73%

As of Wednesday, September 2, 2026 at 11:47 AM CDT

Today's Outlook

Day

Mostly cloudy and hot, with a high of 100°F38°C and morning low of 77°F25°C. Light wind from the SSW around 5 mph8 km/h. Heat risk in the afternoon.

Night

Mostly cloudy, with a low around 88°F31°C. Breezy from the SE at 8 to 11 mph13 to 18 km/h.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Hot	High 100°F38°C	Low 77°F25°C	Precip 0 in0 mm—	Cloud 68%	Wind S 6 mph9 km/h	Wednesday: Mostly cloudy and hot, with a high of 100°F38°C and morning low of 77°F25°C. Light wind from the SSW around 5 mph8 km/h. Heat risk in the afternoon. Wednesday Night: Mostly cloudy, with a low around 88°F31°C. Breezy from the SE at 8 to 11 mph13 to 18 km/h.
Drizzle	High 99°F37°C	Low 79°F26°C	Precip 0.02 in0.4 mm27%	Cloud 60%	Wind SSE 9 mph14 km/h	Thursday: Mostly cloudy and hot, with a high of 99°F37°C and morning low of 79°F26°C. Breezy from the S at 7 to 8 mph12 to 13 km/h. 10% chance of drizzle. Heat risk in the afternoon. Thursday Night: Mostly cloudy, with a low around 81°F27°C. Breezy from the SSE at 10 to 11 mph17 to 18 km/h. 27% chance of drizzle in the evening.
Showers	High 96°F35°CFeels 101°F38°C	Low 79°F26°C	Precip 0.06 in1.6 mm48%	Cloud 53%	Wind SSE 7 mph11 km/h	Friday: Mostly cloudy and hot, with a high of 96°F35°C and morning low of 79°F26°C. Light wind from the SSE around 6 mph9 km/h. 16% chance of drizzle in the morning. Heat risk in the afternoon. Friday Night: Mostly cloudy, with a low around 81°F27°C. Breezy from the SSE at 8 to 9 mph13 to 15 km/h. 48% chance of showers in the evening.
Drizzle	High 95°F35°CFeels 101°F38°C	Low 77°F25°C	Precip 0.03 in0.8 mm26%	Cloud 50%	Wind SE 5 mph9 km/h	Saturday: Partly cloudy and hot, with a high of 95°F35°C and morning low of 77°F25°C. Light wind from the SSE around 4 mph7 km/h. Heat risk in the afternoon. Saturday Night: Mostly cloudy, with a low around 79°F26°C. Breezy from the SE at 6 to 8 mph10 to 12 km/h. 26% chance of drizzle in the evening.
Drizzle	High 95°F35°CFeels 101°F38°C	Low 77°F25°C	Precip 0.04 in1.1 mm23%	Cloud 34%	Wind SSE 5 mph7 km/h	Sunday: Partly cloudy and hot, with a high of 95°F35°C and morning low of 77°F25°C — feels like 100°F38°C. Light wind from the SE around 4 mph6 km/h. 17% chance of drizzle throughout the day. Heat risk in the afternoon. Sunday Night: Partly cloudy, with a low around 79°F26°C. Light wind from the SSE around 5 mph8 km/h. 23% chance of drizzle in the evening.
Drizzle	High 95°F35°CFeels 101°F39°C	Low 77°F25°C	Precip 0.05 in1.2 mm34%	Cloud 35%	Wind SSE 6 mph10 km/h	Monday: Partly cloudy and hot, with a high of 95°F35°C and morning low of 77°F25°C — feels like 102°F39°C. Breezy from the SSE at 5 to 7 mph8 to 11 km/h. 19% chance of drizzle throughout the day. Heat risk in the afternoon. Monday Night: Partly cloudy, with a low around 79°F26°C. Breezy from the SSE at 7 to 8 mph11 to 13 km/h. 34% chance of drizzle in the evening.
Showers	High 93°F34°CFeels 100°F38°C	Low 77°F25°C	Precip 0.09 in2.4 mm45%	Cloud 51%	Wind SSE 7 mph11 km/h	Tuesday: Mostly cloudy and hot, with a high of 93°F34°C and morning low of 77°F25°C — feels like 100°F38°C. Breezy from the SSE at 6 to 9 mph10 to 14 km/h. 28% chance of drizzle throughout the day. Heat risk in the afternoon. Tuesday Night: Partly cloudy, with a low around 79°F26°C. Breezy from the SSE at 8 to 9 mph12 to 15 km/h. 45% chance of showers before dawn.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	WednesdaySep 2	100°F38°C	77°F25°C	0 in0 mm· —	68%	Hot	S 6 mph9 km/h
DayMostly cloudy and hot, with a high of 100°F38°C and morning low of 77°F25°C. Light wind from the SSW around 5 mph8 km/h. Heat risk in the afternoon. NightMostly cloudy, with a low around 88°F31°C. Breezy from the SE at 8 to 11 mph13 to 18 km/h.
	ThursdaySep 3	99°F37°C	79°F26°C	0.02 in0.4 mm· 27%	60%	Drizzle	SSE 9 mph14 km/h
DayMostly cloudy and hot, with a high of 99°F37°C and morning low of 79°F26°C. Breezy from the S at 7 to 8 mph12 to 13 km/h. 10% chance of drizzle. Heat risk in the afternoon. NightMostly cloudy, with a low around 81°F27°C. Breezy from the SSE at 10 to 11 mph17 to 18 km/h. 27% chance of drizzle in the evening.
	FridaySep 4	96°F35°C Feels 101°F38°C	79°F26°C	0.06 in1.6 mm· 48%	53%	Showers	SSE 7 mph11 km/h
DayMostly cloudy and hot, with a high of 96°F35°C and morning low of 79°F26°C. Light wind from the SSE around 6 mph9 km/h. 16% chance of drizzle in the morning. Heat risk in the afternoon. NightMostly cloudy, with a low around 81°F27°C. Breezy from the SSE at 8 to 9 mph13 to 15 km/h. 48% chance of showers in the evening.
	SaturdaySep 5	95°F35°C Feels 101°F38°C	77°F25°C	0.03 in0.8 mm· 26%	50%	Drizzle	SE 5 mph9 km/h
DayPartly cloudy and hot, with a high of 95°F35°C and morning low of 77°F25°C. Light wind from the SSE around 4 mph7 km/h. Heat risk in the afternoon. NightMostly cloudy, with a low around 79°F26°C. Breezy from the SE at 6 to 8 mph10 to 12 km/h. 26% chance of drizzle in the evening.
	SundaySep 6	95°F35°C Feels 101°F38°C	77°F25°C	0.04 in1.1 mm· 23%	34%	Drizzle	SSE 5 mph7 km/h
DayPartly cloudy and hot, with a high of 95°F35°C and morning low of 77°F25°C — feels like 100°F38°C. Light wind from the SE around 4 mph6 km/h. 17% chance of drizzle throughout the day. Heat risk in the afternoon. NightPartly cloudy, with a low around 79°F26°C. Light wind from the SSE around 5 mph8 km/h. 23% chance of drizzle in the evening.
	MondaySep 7	95°F35°C Feels 101°F39°C	77°F25°C	0.05 in1.2 mm· 34%	35%	Drizzle	SSE 6 mph10 km/h
DayPartly cloudy and hot, with a high of 95°F35°C and morning low of 77°F25°C — feels like 102°F39°C. Breezy from the SSE at 5 to 7 mph8 to 11 km/h. 19% chance of drizzle throughout the day. Heat risk in the afternoon. NightPartly cloudy, with a low around 79°F26°C. Breezy from the SSE at 7 to 8 mph11 to 13 km/h. 34% chance of drizzle in the evening.
	TuesdaySep 8	93°F34°C Feels 100°F38°C	77°F25°C	0.09 in2.4 mm· 45%	51%	Showers	SSE 7 mph11 km/h
DayMostly cloudy and hot, with a high of 93°F34°C and morning low of 77°F25°C — feels like 100°F38°C. Breezy from the SSE at 6 to 9 mph10 to 14 km/h. 28% chance of drizzle throughout the day. Heat risk in the afternoon. NightPartly cloudy, with a low around 79°F26°C. Breezy from the SSE at 8 to 9 mph12 to 15 km/h. 45% chance of showers before dawn.
	WednesdaySep 9	93°F34°C Feels 100°F38°C	77°F25°C	0.09 in2.4 mm· 46%	57%	Showers	SSE 7 mph12 km/h
DayMostly cloudy and hot, with a high of 93°F34°C and morning low of 77°F25°C — feels like 100°F38°C. Breezy from the SSE at 7 to 8 mph11 to 14 km/h. 31% chance of showers throughout the day. Heat risk in the afternoon. NightMostly cloudy, with a low around 78°F26°C. Breezy from the SSE at 8 to 9 mph13 to 14 km/h. 46% chance of showers before dawn.
	ThursdaySep 10	95°F35°C Feels 101°F39°C	77°F25°C	0.06 in1.4 mm· 21%	46%	Drizzle	SSE 7 mph12 km/h
DayPartly cloudy and hot, with a high of 95°F35°C and morning low of 77°F25°C — feels like 102°F39°C. Breezy from the S at 7 to 8 mph11 to 13 km/h. 18% chance of drizzle throughout the day. Heat risk in the afternoon. NightPartly cloudy, with a low around 78°F26°C. Breezy from the SSE at 8 to 10 mph13 to 15 km/h. 21% chance of drizzle in the evening.
	FridaySep 11	96°F36°C Feels 102°F39°C	77°F25°C	0.04 in1.1 mm· 19%	40%	Drizzle	SSE 8 mph13 km/h
DayPartly cloudy and hot, with a high of 96°F36°C and morning low of 77°F25°C — feels like 102°F39°C. Breezy from the S at 8 to 9 mph12 to 14 km/h. Heat risk in the afternoon. NightPartly cloudy, with a low around 78°F26°C. Breezy from the SSE at 9 to 10 mph14 to 17 km/h. 19% chance of drizzle throughout the night.
	SaturdaySep 12	96°F35°C Feels 102°F39°C	78°F25°C	0.06 in1.5 mm· 24%	53%	Drizzle	S 8 mph14 km/h
DayMostly cloudy and hot, with a high of 96°F35°C and morning low of 78°F25°C — feels like 102°F39°C. Breezy from the S at 8 to 9 mph13 to 14 km/h. 15% chance of drizzle throughout the day. Heat risk in the afternoon. NightMostly cloudy, with a low around 79°F26°C. Breezy from the SSE at 9 to 10 mph15 to 17 km/h. 24% chance of drizzle before dawn.
	SundaySep 13	94°F35°C Feels 100°F38°C	78°F25°C	0.1 in2.5 mm· 24%	53%	Showers	SSE 9 mph14 km/h
DayMostly cloudy and hot, with a high of 94°F35°C and morning low of 78°F25°C — feels like 100°F38°C. Breezy from the S at 8 to 9 mph13 to 15 km/h. 17% chance of showers throughout the day. Heat risk in the afternoon. NightMostly cloudy, with a low around 79°F26°C. Breezy from the SSE at 9 to 10 mph14 to 16 km/h. 24% chance of drizzle throughout the night.
	MondaySep 14	94°F34°C Feels 100°F38°C	77°F25°C	0.07 in1.9 mm· 27%	52%	Drizzle	SSE 9 mph14 km/h
DayMostly cloudy and hot, with a high of 94°F34°C and morning low of 77°F25°C — feels like 100°F38°C. Breezy from the S at 8 to 9 mph13 to 15 km/h. 22% chance of drizzle throughout the day. Heat risk in the afternoon. NightMostly cloudy, with a low around 78°F26°C. Breezy from the SSE at 9 to 10 mph14 to 16 km/h. 27% chance of drizzle throughout the night.
	TuesdaySep 15	94°F34°C Feels 99°F37°C	77°F25°C	0.05 in1.3 mm· 22%	45%	Drizzle	SSE 8 mph13 km/h
DayPartly cloudy and hot, with a high of 94°F34°C and morning low of 77°F25°C. Breezy from the S at 8 to 9 mph13 to 14 km/h. 13% chance of drizzle around midday. Heat risk in the afternoon. NightPartly cloudy, with a low around 78°F26°C. Breezy from the SSE at 8 to 9 mph13 to 15 km/h. 22% chance of drizzle in the evening.
	WednesdaySep 16	94°F35°C Feels 98°F37°C	76°F24°C	0.06 in1.4 mm· 17%	43%	Drizzle	SSE 7 mph11 km/h
DayPartly cloudy and hot, with a high of 94°F35°C and morning low of 76°F24°C. Breezy from the S at 7 mph11 km/h. 15% chance of drizzle throughout the day. Heat risk in the afternoon. NightPartly cloudy, with a low around 77°F25°C. Breezy from the SSE at 7 to 8 mph12 to 13 km/h. 17% chance of drizzle throughout the night.

Nearby Cities

Kyle8 mi13 km New Braunfels17 mi27 km Canyon Lake19 mi31 km Seguin22 mi35 km Cibolo28 mi45 km Austin29 mi47 km

About This Forecast

This forecast is powered by WeatherMesh, the world's most advanced and accurate weather model powered by AI. WeatherMesh is built on proprietary data from WindBorne's Global Sounding Balloon constellation — the world's largest fleet of autonomous, long-duration weather balloons — collecting observations across 100% of Earth, including over oceans and remote regions where no other data exists.

WeatherMesh consistently outperforms legacy models in independent benchmarks. View Benchmarks →

Access WeatherMesh forecasts programmatically via our API. API Documentation →

How to Access Weather Forecasts

Pattern	Example	Description
/weather/{country}/{city}/	/weather/united-states/san-francisco/	City forecast (canonical URL)
/weather/{city}/	/weather/tokyo/	Shorthand — redirects to most populous match
/weather/{country}/{region}/{city}/	/weather/united-states/california/san-francisco/	With region — redirects to canonical
/weather/nearby?lat={lat}&lon={lon}	/weather/nearby?lat=48.1&lon=11.5	Find nearest city by coordinates
/weather/{country}/	/weather/germany/	Country index — all cities by region

Country and city names use lowercase slugs with hyphens (e.g. united-states, san-francisco). Arbitrary city names are supported — if not in our database, we geocode the name and serve the forecast for that location.

For programmatic access, use theWindBorne Forecast APIwhich returns structured JSON for any coordinates worldwide.

Coordinates: 29.8833°N, 97.9414°W·Elevation: 188m·Timezone: America/Chicago·Population: 60,684