Current Conditions

San Marcos, California

67°F20°C

Clear

Wind

NW 3 mph5 km/h

Humidity

85%

Cloud Cover

As of Tuesday, September 22, 2026 at 10:13 PM PDT

Today's Outlook

Night

Mostly clear, with a low around 64°F18°C. Light wind from the WNW around 2 mph4 km/h.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Clear	High 82°F28°C	Low 64°F18°C	Precip 0 in0 mm—	Cloud 16%	Wind W 4 mph6 km/h	Wednesday: Mostly clear and warm, with a high of 82°F28°C and morning low of 69°F20°C. Breezy from the WSW at 6 to 9 mph9 to 14 km/h. Wednesday Night: Mostly clear, with a low around 64°F18°C. Light wind from the WNW around 2 mph4 km/h.
Clear	High 81°F27°C	Low 66°F19°C	Precip 0 in0.1 mm2%	Cloud 19%	Wind W 4 mph6 km/h	Thursday: Mostly clear and warm, with a high of 81°F27°C and morning low of 69°F20°C. Breezy from the WSW at 6 to 8 mph9 to 13 km/h. Thursday Night: Mostly clear, with a low around 66°F19°C. Light wind from the WNW around 2 mph4 km/h.
Clear	High 84°F29°C	Low 67°F20°C	Precip 0 in0 mm—	Cloud 28%	Wind W 4 mph7 km/h	Friday: Partly cloudy and warm, with a high of 84°F29°C and morning low of 70°F21°C. Breezy from the W at 6 to 9 mph9 to 14 km/h. Friday Night: Partly cloudy, with a low around 67°F20°C. Light wind from the WNW around 2 mph4 km/h.
Partly Cloudy	High 85°F30°C	Low 68°F20°C	Precip 0 in0 mm—	Cloud 67%	Wind WSW 4 mph6 km/h	Saturday: Mostly cloudy and warm, with a high of 85°F30°C and morning low of 71°F22°C. Breezy from the WSW at 5 to 8 mph8 to 13 km/h. Saturday Night: Mostly cloudy, with a low around 68°F20°C. Light wind from the W around 2 mph4 km/h.
Light Rain	High 77°F25°C	Low 70°F21°C	Precip 0.1 in2.6 mm42%	Cloud 77%	Wind W 4 mph6 km/h	Sunday: Mostly cloudy and warm, with a high of 77°F25°C and morning low of 72°F22°C. Light wind from the WSW around 5 mph7 km/h. 42% chance of light rain throughout the day. Sunday Night: Mostly cloudy, with a low around 70°F21°C. Light wind from the WNW around 3 mph4 km/h. 20% chance of drizzle before dawn.
Drizzle	High 79°F26°C	Low 67°F20°C	Precip 0.07 in1.7 mm24%	Cloud 39%	Wind W 4 mph7 km/h	Monday: Partly cloudy and warm, with a high of 79°F26°C and morning low of 69°F21°C. Breezy from the W at 5 to 8 mph9 to 12 km/h. 24% chance of drizzle throughout the day. Monday Night: Partly cloudy, with a low around 67°F20°C. Light wind from the NW around 3 mph5 km/h. 17% chance of drizzle overnight.
Clear	High 85°F29°C	Low 65°F18°C	Precip 0.04 in1 mm5%	Cloud 15%	Wind WNW 4 mph6 km/h	Tuesday: Mostly clear and warm, with a high of 85°F29°C and morning low of 69°F21°C. Breezy from the W at 5 to 7 mph9 to 12 km/h. Tuesday Night: Mostly clear, with a low around 65°F18°C. Light wind from the N around 3 mph4 km/h.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	WednesdaySep 23	82°F28°C	64°F18°C	0 in0 mm· —	16%	Clear	W 4 mph6 km/h
DayMostly clear and warm, with a high of 82°F28°C and morning low of 69°F20°C. Breezy from the WSW at 6 to 9 mph9 to 14 km/h. NightMostly clear, with a low around 64°F18°C. Light wind from the WNW around 2 mph4 km/h.
	ThursdaySep 24	81°F27°C	66°F19°C	0 in0.1 mm· 2%	19%	Clear	W 4 mph6 km/h
DayMostly clear and warm, with a high of 81°F27°C and morning low of 69°F20°C. Breezy from the WSW at 6 to 8 mph9 to 13 km/h. NightMostly clear, with a low around 66°F19°C. Light wind from the WNW around 2 mph4 km/h.
	FridaySep 25	84°F29°C	67°F20°C	0 in0 mm· —	28%	Clear	W 4 mph7 km/h
DayPartly cloudy and warm, with a high of 84°F29°C and morning low of 70°F21°C. Breezy from the W at 6 to 9 mph9 to 14 km/h. NightPartly cloudy, with a low around 67°F20°C. Light wind from the WNW around 2 mph4 km/h.
	SaturdaySep 26	85°F30°C	68°F20°C	0 in0 mm· —	67%	Partly Cloudy	WSW 4 mph6 km/h
DayMostly cloudy and warm, with a high of 85°F30°C and morning low of 71°F22°C. Breezy from the WSW at 5 to 8 mph8 to 13 km/h. NightMostly cloudy, with a low around 68°F20°C. Light wind from the W around 2 mph4 km/h.
	SundaySep 27	77°F25°C	70°F21°C	0.1 in2.6 mm· 42%	77%	Light Rain	W 4 mph6 km/h
DayMostly cloudy and warm, with a high of 77°F25°C and morning low of 72°F22°C. Light wind from the WSW around 5 mph7 km/h. 42% chance of light rain throughout the day. NightMostly cloudy, with a low around 70°F21°C. Light wind from the WNW around 3 mph4 km/h. 20% chance of drizzle before dawn.
	MondaySep 28	79°F26°C	67°F20°C	0.07 in1.7 mm· 24%	39%	Drizzle	W 4 mph7 km/h
DayPartly cloudy and warm, with a high of 79°F26°C and morning low of 69°F21°C. Breezy from the W at 5 to 8 mph9 to 12 km/h. 24% chance of drizzle throughout the day. NightPartly cloudy, with a low around 67°F20°C. Light wind from the NW around 3 mph5 km/h. 17% chance of drizzle overnight.
	TuesdaySep 29	85°F29°C	65°F18°C	0.04 in1 mm· 5%	15%	Clear	WNW 4 mph6 km/h
DayMostly clear and warm, with a high of 85°F29°C and morning low of 69°F21°C. Breezy from the W at 5 to 7 mph9 to 12 km/h. NightMostly clear, with a low around 65°F18°C. Light wind from the N around 3 mph4 km/h.
	WednesdaySep 30	87°F31°C	66°F19°C	0.03 in0.8 mm· 7%	22%	Clear	W 4 mph6 km/h
DayMostly clear and hot, with a high of 87°F31°C and morning low of 70°F21°C. Breezy from the W at 5 to 7 mph8 to 12 km/h. NightMostly clear, with a low around 66°F19°C. Light wind from the NE around 3 mph4 km/h.
	ThursdayOct 1	87°F30°C	68°F20°C	0.02 in0.5 mm· 5%	36%	Clear	W 4 mph7 km/h
DayPartly cloudy and hot, with a high of 87°F30°C and morning low of 71°F22°C. Breezy from the W at 5 to 8 mph9 to 13 km/h. NightPartly cloudy, with a low around 68°F20°C. Light wind from the NNE around 3 mph4 km/h.
	FridayOct 2	84°F29°C	69°F20°C	0.05 in1.3 mm· 9%	36%	Clear	W 4 mph6 km/h
DayPartly cloudy and warm, with a high of 84°F29°C and morning low of 71°F22°C. Breezy from the WSW at 5 to 8 mph9 to 12 km/h. NightPartly cloudy, with a low around 69°F20°C. Light wind from the NW around 3 mph4 km/h.
	SaturdayOct 3	84°F29°C	68°F20°C	0.05 in1.2 mm· 10%	29%	Drizzle	W 4 mph6 km/h
DayPartly cloudy and warm, with a high of 84°F29°C and morning low of 70°F21°C. Breezy from the W at 5 to 8 mph9 to 12 km/h. 10% chance of drizzle throughout the day. NightPartly cloudy, with a low around 68°F20°C. Light wind from the WNW around 3 mph4 km/h.
	SundayOct 4	84°F29°C	67°F20°C	0.02 in0.6 mm· 7%	24%	Clear	W 4 mph6 km/h
DayMostly clear and warm, with a high of 84°F29°C and morning low of 70°F21°C. Breezy from the W at 5 to 7 mph8 to 12 km/h. NightPartly cloudy, with a low around 67°F20°C. Light wind from the N around 3 mph4 km/h.
	MondayOct 5	85°F29°C	67°F20°C	0.04 in0.9 mm· 7%	21%	Clear	W 4 mph7 km/h
DayMostly clear and warm, with a high of 85°F29°C and morning low of 70°F21°C. Breezy from the W at 5 to 7 mph9 to 12 km/h. NightMostly clear, with a low around 67°F20°C. Light wind from the N around 3 mph5 km/h.
	TuesdayOct 6	86°F30°C	67°F19°C	0.03 in0.8 mm· 5%	19%	Clear	W 4 mph7 km/h
DayMostly clear and warm, with a high of 86°F30°C and morning low of 70°F21°C. Breezy from the W at 5 to 7 mph9 to 12 km/h. NightMostly clear, with a low around 67°F19°C. Light wind from the NNE around 3 mph5 km/h.
	WednesdayOct 7	85°F29°C	67°F20°C	0.01 in0.3 mm· 4%	24%	Clear	W 5 mph7 km/h
DayMostly clear and warm, with a high of 85°F29°C and morning low of 70°F21°C. Breezy from the W at 5 to 7 mph9 to 12 km/h. NightPartly cloudy, with a low around 67°F20°C. Light wind from the NE around 3 mph5 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

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