Current Conditions

San Marcos, California

82°F28°C

Clear

Wind

W 6 mph9 km/h

Humidity

55%

Cloud Cover

As of Thursday, July 23, 2026 at 10:53 AM PDT

Today's Outlook

Day

Mostly clear and warm, with a high of 86°F30°C and morning low of 74°F23°C. Breezy from the W at 6 to 9 mph10 to 14 km/h.

Night

Mostly clear, with a low around 68°F20°C. Light wind from the WSW around 3 mph5 km/h.

7-Day Forecast

Day	Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
ThursdayJul 23	Clear	High 86°F30°C	Low 68°F20°C	Precip 0 in0 mm—	Cloud 18%	Wind W 5 mph8 km/h	Thursday: Mostly clear and warm, with a high of 86°F30°C and morning low of 74°F23°C. Breezy from the W at 6 to 9 mph10 to 14 km/h. Thursday Night: Mostly clear, with a low around 68°F20°C. Light wind from the WSW around 3 mph5 km/h.
FridayJul 24	Clear	High 85°F30°C	Low 70°F21°C	Precip 0 in0 mm—	Cloud 26%	Wind WSW 4 mph7 km/h	Friday: Partly cloudy and warm, with a high of 85°F30°C and morning low of 74°F23°C. Breezy from the WSW at 6 to 8 mph9 to 12 km/h. Friday Night: Partly cloudy, with a low around 70°F21°C. Light wind from the WSW around 3 mph5 km/h.
SaturdayJul 25	Clear	High 85°F30°C	Low 69°F21°C	Precip 0 in0.1 mm1%	Cloud 17%	Wind WSW 4 mph7 km/h	Saturday: Mostly clear and warm, with a high of 85°F30°C and morning low of 74°F23°C. Breezy from the WSW at 6 to 8 mph9 to 12 km/h. Humid. Saturday Night: Mostly clear, with a low around 69°F21°C. Light wind from the WSW around 3 mph4 km/h.
SundayJul 26	Clear	High 83°F29°C	Low 70°F21°C	Precip 0 in0 mm—	Cloud 30%	Wind WSW 4 mph6 km/h	Sunday: Partly cloudy and warm, with a high of 83°F29°C and morning low of 74°F23°C. Breezy from the WSW at 5 to 7 mph9 to 12 km/h. Humid. Sunday Night: Partly cloudy, with a low around 70°F21°C. Light wind from the SW around 3 mph4 km/h.
MondayJul 27	Drizzle	High 83°F28°C	Low 70°F21°C	Precip 0.01 in0.2 mm11%	Cloud 35%	Wind SW 4 mph7 km/h	Monday: Partly cloudy and warm, with a high of 83°F28°C and morning low of 73°F23°C. Breezy from the SW at 6 to 7 mph9 to 12 km/h. 11% chance of drizzle in the afternoon. Humid. Monday Night: Partly cloudy, with a low around 70°F21°C. Light wind from the SW around 3 mph4 km/h.
TuesdayJul 28	Clear	High 83°F28°C	Low 70°F21°C	Precip 0 in0.1 mm2%	Cloud 37%	Wind WSW 4 mph6 km/h	Tuesday: Partly cloudy and warm, with a high of 83°F28°C and morning low of 73°F23°C. Breezy from the WSW at 5 to 7 mph9 to 12 km/h. Humid. Tuesday Night: Partly cloudy, with a low around 70°F21°C. Light wind from the WSW around 2 mph4 km/h.
WednesdayJul 29	Clear	High 84°F29°C	Low 70°F21°C	Precip 0 in0.1 mm2%	Cloud 25%	Wind WSW 4 mph6 km/h	Wednesday: Mostly clear and warm, with a high of 84°F29°C and morning low of 73°F23°C. Breezy from the WSW at 5 to 8 mph9 to 12 km/h. Humid. Wednesday Night: Partly cloudy, with a low around 70°F21°C. Light wind from the WSW around 2 mph4 km/h.

15-Day Forecast

	Day	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Condition	Wind (mph)
	ThursdayJul 23	86°F30°C	68°F20°C	0 in0 mm· —	18%	Clear	W 5 mph8 km/h
DayMostly clear and warm, with a high of 86°F30°C and morning low of 74°F23°C. Breezy from the W at 6 to 9 mph10 to 14 km/h. NightMostly clear, with a low around 68°F20°C. Light wind from the WSW around 3 mph5 km/h.
	FridayJul 24	85°F30°C	70°F21°C	0 in0 mm· —	26%	Clear	WSW 4 mph7 km/h
DayPartly cloudy and warm, with a high of 85°F30°C and morning low of 74°F23°C. Breezy from the WSW at 6 to 8 mph9 to 12 km/h. NightPartly cloudy, with a low around 70°F21°C. Light wind from the WSW around 3 mph5 km/h.
	SaturdayJul 25	85°F30°C	69°F21°C	0 in0.1 mm· 1%	17%	Clear	WSW 4 mph7 km/h
DayMostly clear and warm, with a high of 85°F30°C and morning low of 74°F23°C. Breezy from the WSW at 6 to 8 mph9 to 12 km/h. Humid. NightMostly clear, with a low around 69°F21°C. Light wind from the WSW around 3 mph4 km/h.
	SundayJul 26	83°F29°C	70°F21°C	0 in0 mm· —	30%	Clear	WSW 4 mph6 km/h
DayPartly cloudy and warm, with a high of 83°F29°C and morning low of 74°F23°C. Breezy from the WSW at 5 to 7 mph9 to 12 km/h. Humid. NightPartly cloudy, with a low around 70°F21°C. Light wind from the SW around 3 mph4 km/h.
	MondayJul 27	83°F28°C	70°F21°C	0.01 in0.2 mm· 11%	35%	Drizzle	SW 4 mph7 km/h
DayPartly cloudy and warm, with a high of 83°F28°C and morning low of 73°F23°C. Breezy from the SW at 6 to 7 mph9 to 12 km/h. 11% chance of drizzle in the afternoon. Humid. NightPartly cloudy, with a low around 70°F21°C. Light wind from the SW around 3 mph4 km/h.
	TuesdayJul 28	83°F28°C	70°F21°C	0 in0.1 mm· 2%	37%	Clear	WSW 4 mph6 km/h
DayPartly cloudy and warm, with a high of 83°F28°C and morning low of 73°F23°C. Breezy from the WSW at 5 to 7 mph9 to 12 km/h. Humid. NightPartly cloudy, with a low around 70°F21°C. Light wind from the WSW around 2 mph4 km/h.
	WednesdayJul 29	84°F29°C	70°F21°C	0 in0.1 mm· 2%	25%	Clear	WSW 4 mph6 km/h
DayMostly clear and warm, with a high of 84°F29°C and morning low of 73°F23°C. Breezy from the WSW at 5 to 8 mph9 to 12 km/h. Humid. NightPartly cloudy, with a low around 70°F21°C. Light wind from the WSW around 2 mph4 km/h.
	ThursdayJul 30	84°F29°C	69°F21°C	0 in0.1 mm· 1%	23%	Clear	WSW 4 mph6 km/h
DayMostly clear and warm, with a high of 84°F29°C and morning low of 74°F23°C. Breezy from the W at 5 to 8 mph9 to 13 km/h. Humid. NightMostly clear, with a low around 69°F21°C. Light wind from the WSW around 2 mph4 km/h.
	FridayJul 31	86°F30°C	70°F21°C	0 in0.1 mm· 1%	17%	Clear	W 4 mph6 km/h
DayMostly clear and warm, with a high of 86°F30°C and morning low of 74°F23°C. Breezy from the W at 5 to 8 mph9 to 12 km/h. NightMostly clear, with a low around 70°F21°C. Light wind from the W around 3 mph4 km/h.
	SaturdayAug 1	87°F31°C	70°F21°C	0 in0 mm· —	19%	Clear	WSW 4 mph6 km/h
DayMostly clear and hot, with a high of 87°F31°C and morning low of 75°F24°C. Breezy from the WSW at 5 to 8 mph8 to 12 km/h. Humid. NightMostly clear, with a low around 70°F21°C. Light wind from the WSW around 2 mph4 km/h.
	SundayAug 2	86°F30°C	71°F22°C	0 in0 mm· —	29%	Clear	WSW 4 mph6 km/h
DayPartly cloudy and warm, with a high of 86°F30°C and morning low of 75°F24°C. Breezy from the WSW at 5 to 7 mph9 to 12 km/h. Humid. NightPartly cloudy, with a low around 71°F22°C. Light wind from the WSW around 3 mph4 km/h.
	MondayAug 3	84°F29°C	70°F21°C	0 in0 mm· —	35%	Clear	WSW 4 mph7 km/h
DayPartly cloudy and warm, with a high of 84°F29°C and morning low of 74°F24°C. Breezy from the WSW at 6 to 8 mph9 to 12 km/h. NightPartly cloudy, with a low around 70°F21°C. Light wind from the SW around 3 mph4 km/h.
	TuesdayAug 4	83°F28°C	69°F21°C	0 in0 mm· —	40%	Partly Cloudy	WSW 4 mph7 km/h
DayPartly cloudy and warm, with a high of 83°F28°C and morning low of 72°F22°C. Breezy from the WSW at 6 to 8 mph9 to 12 km/h. NightPartly cloudy, with a low around 69°F21°C. Light wind from the WSW around 3 mph4 km/h.
	WednesdayAug 5	83°F28°C	69°F20°C	0.01 in0.3 mm· 4%	43%	Partly Cloudy	WSW 4 mph7 km/h
DayPartly cloudy and warm, with a high of 83°F28°C and morning low of 73°F23°C. Breezy from the WSW at 6 to 8 mph9 to 13 km/h. Humid. NightPartly cloudy, with a low around 69°F20°C. Light wind from the WSW around 3 mph5 km/h.
	ThursdayAug 6	83°F28°C	70°F21°C	0.01 in0.3 mm· 6%	43%	Partly Cloudy	WSW 4 mph7 km/h
DayPartly cloudy and warm, with a high of 83°F28°C and morning low of 73°F23°C. Breezy from the WSW at 6 to 8 mph9 to 13 km/h. Humid. NightPartly cloudy, with a low around 70°F21°C. Light wind from the WSW around 3 mph4 km/h.

Nearby Cities

Escondido5 mi8 km Vista6 mi10 km Encinitas10 mi17 km Carlsbad11 mi17 km Oceanside13 mi21 km Rancho Penasquitos13 mi21 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.

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Coordinates: 33.1434°N, 117.1661°W·Elevation: 177m·Timezone: America/Los_Angeles·Population: 92,931