San Marcos

Current Weather

23°73°

Light Rain

Feels Like: 25°77°

Min: 20°68°

Max: 26°78°

The next few hours will be humid and mostly cloudy, with today reaching 26°C and dropping to 20°C. The coming days will be light rain throughout the day.

Hourly Forecast
23°73°22°72°22°71°21°70°21°70°21°70°21°70°21°69°21°69°21°69°21°69°20°69°20°69°20°69°21°69°21°69°21°71°22°72°23°74°24°76°25°77°26°79°26°79°26°78°
100%
88%
88%
88%
60%
60%
60%
36%
36%
36%
10%
10%
10%
68%
68%
3pm
4pm
5pm
6pm
7pm
8pm
9pm
10pm
11pm
12am
1am
2am
3am
4am
5am
6am
7am
8am
9am
10am
11am
12pm
1pm
2pm
Today
Tomorrow

Want a closer look at the weather?

Premium adds minute-by-minute rain timing, yesterday comparisons, and more detail across Airpult.

Get Premium
Air Quality
22
Good

Air quality is satisfactory, and air pollution poses little or no risk.

GoodHazardous
Daylight Hours

05:50

Sunrise

17:33

Sunset

11 hours 43 minutes of sunlight today
Moon

06:31

Moonrise

Daily Forecast

Today

20°68°
26°78°

Monday

20°68°
26°79°

Tuesday

20°67°
26°79°

Wednesday

19°67°
27°80°

Thursday

19°67°
27°80°

Friday

20°68°
27°81°

Saturday

20°68°
27°80°

Sunday

19°67°
25°77°

Monday

20°68°
25°78°

Tuesday

19°67°
26°79°
UV Index
Wear sunscreen
5Moderate
LowExtreme
Humidity
90%Humid
LowHigh
Looking at the night sky?

See moon phases, eclipses, and seasons for this year.

View astronomy
Current stargazing conditions?

See sky darkness, moon phase, and the best viewing window for San Marcos.

View stargazing score

Weather in San Marcos today, October 11, 2026

San Marcos starts October 11, 2026 looking damp, with rain in the forecast and wetter spells likely at times. Waterproof kit is the safer call for early plans.San Marcos starts October 11, 2026 looking damp, with rain in the forecast and wetter spells likely at times. Waterproof kit is the safer call for early plans.

Temperatures climb from an overnight low near 20°C toward a daytime high of about 26°C. Moisture in the air spans 89%-99%, with the highest values around 18:00. Winds stay light, near 7 km/h by 15:00, so the day feels still more than breezy.Temperatures climb from an overnight low near 68°F toward a daytime high of about 78°F. Moisture in the air spans 89%-99%, with the highest values around 18:00. Winds stay light, near 5 mph by 15:00, so the day feels still more than breezy.

The second half of the day still looks unsettled, with rain probability around 100% by 15:00. Dense cloud near 99% at 18:00 keeps the feel grey. Visibility stays generally good near 6.9 km on average, though it can drop toward 0.1 km in thicker cloud or showers. The sun rises at 05:50 and sets at 17:33, for a total of 11 hours 43 minutes of sunlight today.The second half of the day still looks unsettled, with rain probability around 100% by 15:00. Dense cloud near 99% at 18:00 keeps the feel grey. Visibility stays generally good near 4.3 mi on average, though it can drop toward 0.1 mi in thicker cloud or showers. The sun rises at 05:50 and sets at 17:33, for a total of 11 hours 43 minutes of sunlight today.

The practical takeaway for San Marcos on October 11, 2026 is simple: plan for rain, keep layers handy, and work around a high of about 26°C.The practical takeaway for San Marcos on October 11, 2026 is simple: plan for rain, keep layers handy, and work around a high of about 78°F.

Frequently asked questions about weather in San Marcos

How warm does it get in San Marcos?

The warmest month in San Marcos is April, with average high temperatures of 28°C. The average temperature during this period is around 22°C.The warmest month in San Marcos is April, with average high temperatures of 83°F. The average temperature during this period is around 71°F.

How cold does it get in San Marcos?

The coldest month in San Marcos is January, with average low temperatures of 14°C. The average temperature during this period is around 18°C.The coldest month in San Marcos is January, with average low temperatures of 58°F. The average temperature during this period is around 65°F.

What is the wettest time of year in San Marcos?

The wettest month in San Marcos is June, with an average of 380 mm of precipitation.The wettest month in San Marcos is June, with an average of 15 in of precipitation.

What is the driest time of year in San Marcos?

The driest month in San Marcos is February, with an average of 17 mm of precipitation.The driest month in San Marcos is February, with an average of 0.7 in of precipitation.

View full climate insights for San Marcos →