Current Conditions

San Mateo, California

65°F18°C

Clear

Wind

W 9 mph14 km/h

Humidity

75%

Cloud Cover

29%

As of Tuesday, September 22, 2026 at 6:16 PM PDT

Today's Outlook

Night

Partly cloudy, with a low around 56°F14°C. Light wind from the W around 4 mph7 km/h.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Clear	High 73°F23°C	Low 56°F14°C	Precip 0 in0 mm—	Cloud 37%	Wind WNW 5 mph7 km/h	Wednesday: Partly cloudy and warm, with a high of 73°F23°C and morning low of 57°F14°C. Breezy from the NW at 5 to 9 mph8 to 14 km/h. Wednesday Night: Partly cloudy, with a low around 56°F14°C. Light wind from the W around 4 mph7 km/h.
Partly Cloudy	High 71°F22°C	Low 57°F14°C	Precip 0 in0 mm—	Cloud 66%	Wind W 5 mph9 km/h	Thursday: Mostly cloudy and warm, with a high of 71°F22°C and morning low of 58°F14°C. Breezy from the W at 6 to 9 mph10 to 14 km/h. Thursday Night: Mostly cloudy, with a low around 57°F14°C. Light wind from the W around 5 mph8 km/h.
Clear	High 69°F21°C	Low 59°F15°C	Precip 0 in0.1 mm1%	Cloud 36%	Wind WNW 7 mph11 km/h	Friday: Partly cloudy and warm, with a high of 69°F21°C and morning low of 61°F16°C. Breezy from the WNW at 8 to 10 mph13 to 16 km/h. Friday Night: Partly cloudy, with a low around 59°F15°C. Light wind from the W around 5 mph8 km/h.
Partly Cloudy	High 69°F20°C	Low 56°F13°C	Precip 0 in0 mm—	Cloud 42%	Wind W 5 mph8 km/h	Saturday: Partly cloudy and warm, with a high of 69°F20°C and morning low of 57°F14°C. Breezy from the W at 5 to 8 mph9 to 13 km/h. Saturday Night: Partly cloudy, with a low around 56°F13°C. Light wind from the W around 5 mph7 km/h.
Partly Cloudy	High 66°F19°C	Low 57°F14°C	Precip 0 in0 mm—	Cloud 45%	Wind W 7 mph11 km/h	Sunday: Partly cloudy and mild, with a high of 66°F19°C and morning low of 58°F15°C. Breezy from the W at 8 to 9 mph12 to 15 km/h. Sunday Night: Partly cloudy, with a low around 57°F14°C. Breezy from the W at 6 to 7 mph9 to 11 km/h.
Clear	High 68°F20°C	Low 56°F13°C	Precip 0 in0 mm—	Cloud 32%	Wind W 6 mph9 km/h	Monday: Partly cloudy and warm, with a high of 68°F20°C and morning low of 57°F14°C. Breezy from the WNW at 6 to 9 mph10 to 15 km/h. Monday Night: Partly cloudy, with a low around 56°F13°C. Light wind from the W around 5 mph8 km/h.
Clear	High 71°F22°C	Low 57°F14°C	Precip 0 in0 mm—	Cloud 25%	Wind WNW 5 mph9 km/h	Tuesday: Mostly clear and warm, with a high of 71°F22°C and morning low of 59°F15°C. Breezy from the WNW at 6 to 9 mph10 to 14 km/h. Tuesday Night: Partly cloudy, with a low around 57°F14°C. Light wind from the W around 5 mph8 km/h.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	WednesdaySep 23	73°F23°C	56°F14°C	0 in0 mm· —	37%	Clear	WNW 5 mph7 km/h
DayPartly cloudy and warm, with a high of 73°F23°C and morning low of 57°F14°C. Breezy from the NW at 5 to 9 mph8 to 14 km/h. NightPartly cloudy, with a low around 56°F14°C. Light wind from the W around 4 mph7 km/h.
	ThursdaySep 24	71°F22°C	57°F14°C	0 in0 mm· —	66%	Partly Cloudy	W 5 mph9 km/h
DayMostly cloudy and warm, with a high of 71°F22°C and morning low of 58°F14°C. Breezy from the W at 6 to 9 mph10 to 14 km/h. NightMostly cloudy, with a low around 57°F14°C. Light wind from the W around 5 mph8 km/h.
	FridaySep 25	69°F21°C	59°F15°C	0 in0.1 mm· 1%	36%	Clear	WNW 7 mph11 km/h
DayPartly cloudy and warm, with a high of 69°F21°C and morning low of 61°F16°C. Breezy from the WNW at 8 to 10 mph13 to 16 km/h. NightPartly cloudy, with a low around 59°F15°C. Light wind from the W around 5 mph8 km/h.
	SaturdaySep 26	69°F20°C	56°F13°C	0 in0 mm· —	42%	Partly Cloudy	W 5 mph8 km/h
DayPartly cloudy and warm, with a high of 69°F20°C and morning low of 57°F14°C. Breezy from the W at 5 to 8 mph9 to 13 km/h. NightPartly cloudy, with a low around 56°F13°C. Light wind from the W around 5 mph7 km/h.
	SundaySep 27	66°F19°C	57°F14°C	0 in0 mm· —	45%	Partly Cloudy	W 7 mph11 km/h
DayPartly cloudy and mild, with a high of 66°F19°C and morning low of 58°F15°C. Breezy from the W at 8 to 9 mph12 to 15 km/h. NightPartly cloudy, with a low around 57°F14°C. Breezy from the W at 6 to 7 mph9 to 11 km/h.
	MondaySep 28	68°F20°C	56°F13°C	0 in0 mm· —	32%	Clear	W 6 mph9 km/h
DayPartly cloudy and warm, with a high of 68°F20°C and morning low of 57°F14°C. Breezy from the WNW at 6 to 9 mph10 to 15 km/h. NightPartly cloudy, with a low around 56°F13°C. Light wind from the W around 5 mph8 km/h.
	TuesdaySep 29	71°F22°C	57°F14°C	0 in0 mm· —	25%	Clear	WNW 5 mph9 km/h
DayMostly clear and warm, with a high of 71°F22°C and morning low of 59°F15°C. Breezy from the WNW at 6 to 9 mph10 to 14 km/h. NightPartly cloudy, with a low around 57°F14°C. Light wind from the W around 5 mph8 km/h.
	WednesdaySep 30	72°F22°C	58°F14°C	0 in0.1 mm· 2%	35%	Clear	WNW 5 mph9 km/h
DayPartly cloudy and warm, with a high of 72°F22°C and morning low of 58°F15°C. Breezy from the WNW at 6 to 8 mph10 to 14 km/h. NightPartly cloudy, with a low around 58°F14°C. Light wind from the W around 5 mph8 km/h.
	ThursdayOct 1	71°F22°C	58°F14°C	0 in0.1 mm· 2%	36%	Clear	WNW 6 mph10 km/h
DayPartly cloudy and warm, with a high of 71°F22°C and morning low of 60°F15°C. Breezy from the WNW at 7 to 9 mph11 to 14 km/h. NightPartly cloudy, with a low around 58°F14°C. Light wind from the WNW around 5 mph8 km/h.
	FridayOct 2	73°F23°C	57°F14°C	0 in0.1 mm· 1%	19%	Clear	WNW 5 mph9 km/h
DayMostly clear and warm, with a high of 73°F23°C and morning low of 58°F15°C. Breezy from the NW at 6 to 8 mph10 to 14 km/h. NightMostly clear, with a low around 57°F14°C. Light wind from the WNW around 5 mph8 km/h.
	SaturdayOct 3	76°F25°C	59°F15°C	0 in0 mm· —	19%	Clear	NW 5 mph8 km/h
DayMostly clear and warm, with a high of 76°F25°C and morning low of 60°F15°C. Breezy from the NW at 6 to 7 mph9 to 12 km/h. NightMostly clear, with a low around 59°F15°C. Light wind from the WNW around 4 mph7 km/h.
	SundayOct 4	75°F24°C	60°F15°C	0 in0.1 mm· 2%	24%	Clear	WNW 5 mph8 km/h
DayMostly clear and warm, with a high of 75°F24°C and morning low of 60°F16°C. Breezy from the WNW at 6 to 7 mph9 to 12 km/h. NightMostly clear, with a low around 60°F15°C. Light wind from the W around 4 mph7 km/h.
	MondayOct 5	74°F23°C	59°F15°C	0 in0.1 mm· 2%	24%	Clear	W 5 mph8 km/h
DayMostly clear and warm, with a high of 74°F23°C and morning low of 60°F15°C. Breezy from the WNW at 5 to 7 mph9 to 12 km/h. NightPartly cloudy, with a low around 59°F15°C. Light wind from the W around 4 mph7 km/h.
	TuesdayOct 6	74°F23°C	59°F15°C	0 in0.1 mm· 3%	29%	Clear	WNW 5 mph8 km/h
DayPartly cloudy and warm, with a high of 74°F23°C and morning low of 60°F16°C. Breezy from the WNW at 6 to 7 mph9 to 12 km/h. NightPartly cloudy, with a low around 59°F15°C. Light wind from the W around 4 mph7 km/h.
	WednesdayOct 7	73°F23°C	60°F15°C	0.02 in0.5 mm· 3%	34%	Clear	WNW 5 mph8 km/h
DayPartly cloudy and warm, with a high of 73°F23°C and morning low of 60°F16°C. Breezy from the WNW at 6 to 7 mph9 to 12 km/h. NightPartly cloudy, with a low around 60°F15°C. Light wind from the W around 4 mph6 km/h.

Nearby Cities

Burlingame3 mi4 km Foster City3 mi5 km Belmont4 mi6 km Millbrae4 mi7 km San Carlos5 mi8 km San Bruno7 mi11 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: 37.5630°N, 122.3255°W·Elevation: 13m·Timezone: America/Los_Angeles·Population: 103,536