Weather Alert
San Marcos Weather Warning NWS WEATHER ALERT FOR THE SAN MARCOS, CA AREA - Issued: 1003 AM PDT Fri Aug 7 2026 San Marcos Weather Warning

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San Marcos, CA Weather - Hour by Hour Forecast

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San Marcos, CA Weather - Hour by Hour Forecast

24 Hour Forecast

Current Conditions - Clear. Temperature is 75°F24°C, dew point 65°F18°C, humidity 70%. Wind direction is WSW at 8 mph13 km/h with visibility of 10 mi16 km. Barometric pressure is 29.95 in1014 mb.
Tonight - Mostly clear this evening...Becoming partly cloudy. Lows 63 to 68. Areas of winds west to 10 mph this evening becoming light... Full Forecast
Saturday - Patchy fog in the morning. Mostly sunny. Highs 86 to 90 in the western valleys to 93 to 98 near the foothills. Areas of winds west.. Full Forecast

San Marcos Hourly Weather

24 Hour Forecast Scroll
Fri, Aug 07
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San Marcos, CA Hourly Weather - Clear - 5:00 PM San Marcos, CA Hourly Weather - Clear - 6:00 PM San Marcos, CA Hourly Weather - Mostly Cloudy - 7:00 PM San Marcos, CA Hourly Weather - Mostly Cloudy - 8:00 PM San Marcos, CA Hourly Weather - Mostly Cloudy - 9:00 PM San Marcos, CA Hourly Weather - Cloudy - 10:00 PM San Marcos, CA Hourly Weather - Cloudy - 11:00 PM San Marcos, CA Hourly Weather - Cloudy - 12:00 AM San Marcos, CA Hourly Weather - Mostly Cloudy - 1:00 AM San Marcos, CA Hourly Weather - Mostly Cloudy - 2:00 AM San Marcos, CA Hourly Weather - Mostly Cloudy - 3:00 AM San Marcos, CA Hourly Weather - Cloudy - 4:00 AM San Marcos, CA Hourly Weather - Cloudy - 5:00 AM San Marcos, CA Hourly Weather - Cloudy - 6:00 AM San Marcos, CA Hourly Weather - Cloudy - 7:00 AM San Marcos, CA Hourly Weather - Cloudy - 8:00 AM San Marcos, CA Hourly Weather - Cloudy - 9:00 AM San Marcos, CA Hourly Weather - Partly Cloudy - 10:00 AM San Marcos, CA Hourly Weather - Partly Cloudy - 11:00 AM San Marcos, CA Hourly Weather - Partly Cloudy - 12:00 PM San Marcos, CA Hourly Weather - Clear - 1:00 PM San Marcos, CA Hourly Weather - Clear - 2:00 PM San Marcos, CA Hourly Weather - Clear - 3:00 PM San Marcos, CA Hourly Weather - Partly Cloudy - 4:00 PM
Clear Clear Mostly Cloudy Mostly Cloudy Mostly Cloudy Cloudy Cloudy Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Partly Cloudy Partly Cloudy Partly Cloudy Clear Clear Clear Partly Cloudy
76°F24°C 75°F24°C 73°F23°C 72°F22°C 71°F22°C 71°F22°C 70°F21°C 70°F21°C 69°F21°C 69°F21°C 69°F21°C 69°F21°C 69°F21°C 69°F21°C 69°F21°C 69°F21°C 71°F22°C 72°F22°C 74°F23°C 74°F23°C 75°F24°C 75°F24°C 75°F24°C 74°F23°C
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0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 6% 6% 6% 6% 6%
66°F19°C 66°F19°C 65°F18°C 65°F18°C 65°F18°C 66°F19°C 66°F19°C 66°F19°C 66°F19°C 66°F19°C 66°F19°C 65°F18°C 65°F18°C 65°F18°C 64°F18°C 64°F18°C 65°F18°C 65°F18°C 66°F19°C 66°F19°C 66°F19°C 66°F19°C 66°F19°C 65°F18°C
71% 74% 76% 79% 81% 84% 87% 87% 90% 90% 90% 87% 87% 87% 84% 84% 81% 79% 76% 76% 74% 74% 74% 74%
SSW SSW SSW SSW SSW SSW SSW SSW SW SW SSE E N E S SSW SSW SSW SSW SSW SSW SSW SSW SSW
7 mph 7 mph 4 mph 4 mph 4 mph 1 mph 1 mph 1 mph 1 mph 1 mph 1 mph 0 mph 0 mph 0 mph 1 mph 1 mph 1 mph 7 mph 7 mph 7 mph 8 mph 8 mph 8 mph 7 mph
10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 6 mi10 km 6 mi10 km 6 mi10 km 5 mi8 km 5 mi8 km 6 mi10 km 6 mi10 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km
Hour (PDT)
Weather
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POP = Probability of Precipitation. ** Indicates missing data/values from KCRQ model statistics.

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Prob Precip % = Probability of Precipitation.

San Marcos 36 Hour Forecast

POP = Probability of Precipitation. ** Indicates missing data/values from model statistics.

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