Current Conditions

Hayward, California

63°F17°C

Clear

Wind

SW 5 mph8 km/h

Humidity

82%

Cloud Cover

As of Tuesday, September 22, 2026 at 8:19 PM PDT

Today's Outlook

Night

Partly cloudy, with a low around 55°F13°C. Light wind from the SW around 3 mph5 km/h.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Clear	High 82°F28°C	Low 55°F13°C	Precip 0 in0 mm—	Cloud 25%	Wind WSW 3 mph5 km/h	Wednesday: Mostly clear and warm, with a high of 82°F28°C and morning low of 57°F14°C. Light wind from the WNW around 3 mph5 km/h. Wednesday Night: Partly cloudy, with a low around 55°F13°C. Light wind from the SW around 3 mph5 km/h.
Partly Cloudy	High 80°F27°C	Low 57°F14°C	Precip 0 in0 mm—	Cloud 60%	Wind WSW 5 mph7 km/h	Thursday: Mostly cloudy and warm, with a high of 80°F27°C and morning low of 58°F15°C. Breezy from the WSW at 5 to 8 mph8 to 13 km/h. Thursday Night: Mostly cloudy, with a low around 57°F14°C. Light wind from the SW around 4 mph6 km/h.
Clear	High 76°F24°C	Low 58°F14°C	Precip 0 in0 mm—	Cloud 29%	Wind WSW 5 mph9 km/h	Friday: Partly cloudy and warm, with a high of 76°F24°C and morning low of 60°F16°C. Breezy from the W at 7 to 8 mph11 to 14 km/h. Friday Night: Partly cloudy, with a low around 58°F14°C. Light wind from the SW around 4 mph6 km/h.
Clear	High 76°F24°C	Low 54°F12°C	Precip 0 in0 mm—	Cloud 35%	Wind WSW 4 mph7 km/h	Saturday: Partly cloudy and warm, with a high of 76°F24°C and morning low of 56°F13°C. Breezy from the WSW at 5 to 7 mph8 to 12 km/h. Saturday Night: Partly cloudy, with a low around 54°F12°C. Light wind from the SW around 4 mph6 km/h.
Partly Cloudy	High 71°F22°C	Low 55°F13°C	Precip 0 in0 mm—	Cloud 43%	Wind SW 6 mph9 km/h	Sunday: Partly cloudy and warm, with a high of 71°F22°C and morning low of 58°F15°C. Breezy from the WSW at 7 to 8 mph11 to 13 km/h. Sunday Night: Partly cloudy, with a low around 55°F13°C. Light wind from the SW around 5 mph8 km/h.
Clear	High 75°F24°C	Low 54°F12°C	Precip 0 in0 mm—	Cloud 26%	Wind WSW 4 mph7 km/h	Monday: Mostly clear and warm, with a high of 75°F24°C and morning low of 56°F13°C. Breezy from the W at 5 to 7 mph8 to 12 km/h. Monday Night: Partly cloudy, with a low around 54°F12°C. Light wind from the SW around 4 mph6 km/h.
Clear	High 79°F26°C	Low 55°F13°C	Precip 0 in0 mm—	Cloud 19%	Wind WSW 4 mph7 km/h	Tuesday: Mostly clear and warm, with a high of 79°F26°C and morning low of 58°F14°C. Breezy from the W at 5 to 7 mph8 to 11 km/h. Tuesday Night: Mostly clear, with a low around 55°F13°C. Light wind from the SW around 4 mph6 km/h.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	WednesdaySep 23	82°F28°C	55°F13°C	0 in0 mm· —	25%	Clear	WSW 3 mph5 km/h
DayMostly clear and warm, with a high of 82°F28°C and morning low of 57°F14°C. Light wind from the WNW around 3 mph5 km/h. NightPartly cloudy, with a low around 55°F13°C. Light wind from the SW around 3 mph5 km/h.
	ThursdaySep 24	80°F27°C	57°F14°C	0 in0 mm· —	60%	Partly Cloudy	WSW 5 mph7 km/h
DayMostly cloudy and warm, with a high of 80°F27°C and morning low of 58°F15°C. Breezy from the WSW at 5 to 8 mph8 to 13 km/h. NightMostly cloudy, with a low around 57°F14°C. Light wind from the SW around 4 mph6 km/h.
	FridaySep 25	76°F24°C	58°F14°C	0 in0 mm· —	29%	Clear	WSW 5 mph9 km/h
DayPartly cloudy and warm, with a high of 76°F24°C and morning low of 60°F16°C. Breezy from the W at 7 to 8 mph11 to 14 km/h. NightPartly cloudy, with a low around 58°F14°C. Light wind from the SW around 4 mph6 km/h.
	SaturdaySep 26	76°F24°C	54°F12°C	0 in0 mm· —	35%	Clear	WSW 4 mph7 km/h
DayPartly cloudy and warm, with a high of 76°F24°C and morning low of 56°F13°C. Breezy from the WSW at 5 to 7 mph8 to 12 km/h. NightPartly cloudy, with a low around 54°F12°C. Light wind from the SW around 4 mph6 km/h.
	SundaySep 27	71°F22°C	55°F13°C	0 in0 mm· —	43%	Partly Cloudy	SW 6 mph9 km/h
DayPartly cloudy and warm, with a high of 71°F22°C and morning low of 58°F15°C. Breezy from the WSW at 7 to 8 mph11 to 13 km/h. NightPartly cloudy, with a low around 55°F13°C. Light wind from the SW around 5 mph8 km/h.
	MondaySep 28	75°F24°C	54°F12°C	0 in0 mm· —	26%	Clear	WSW 4 mph7 km/h
DayMostly clear and warm, with a high of 75°F24°C and morning low of 56°F13°C. Breezy from the W at 5 to 7 mph8 to 12 km/h. NightPartly cloudy, with a low around 54°F12°C. Light wind from the SW around 4 mph6 km/h.
	TuesdaySep 29	79°F26°C	55°F13°C	0 in0 mm· —	19%	Clear	WSW 4 mph7 km/h
DayMostly clear and warm, with a high of 79°F26°C and morning low of 58°F14°C. Breezy from the W at 5 to 7 mph8 to 11 km/h. NightMostly clear, with a low around 55°F13°C. Light wind from the SW around 4 mph6 km/h.
	WednesdaySep 30	79°F26°C	57°F14°C	0 in0 mm· —	28%	Clear	WSW 4 mph7 km/h
DayPartly cloudy and warm, with a high of 79°F26°C and morning low of 58°F14°C. Breezy from the W at 5 to 7 mph8 to 11 km/h. NightPartly cloudy, with a low around 57°F14°C. Light wind from the SW around 4 mph6 km/h.
	ThursdayOct 1	78°F25°C	58°F14°C	0.01 in0.2 mm· 3%	35%	Clear	WSW 5 mph7 km/h
DayPartly cloudy and warm, with a high of 78°F25°C and morning low of 59°F15°C. Breezy from the W at 5 to 7 mph8 to 11 km/h. NightPartly cloudy, with a low around 58°F14°C. Light wind from the SW around 4 mph6 km/h.
	FridayOct 2	79°F26°C	57°F14°C	0.01 in0.2 mm· 3%	20%	Clear	W 4 mph7 km/h
DayMostly clear and warm, with a high of 79°F26°C and morning low of 58°F15°C. Light wind from the WNW around 5 mph8 km/h. Dry air. NightMostly clear, with a low around 57°F14°C. Light wind from the SW around 4 mph6 km/h.
	SaturdayOct 3	81°F27°C	58°F14°C	0.01 in0.2 mm· 2%	18%	Clear	W 4 mph7 km/h
DayMostly clear and warm, with a high of 81°F27°C and morning low of 59°F15°C. Light wind from the NW around 5 mph8 km/h. Dry air. NightMostly clear, with a low around 58°F14°C. Light wind from the SW around 4 mph6 km/h.
	SundayOct 4	81°F27°C	59°F15°C	0.01 in0.3 mm· 2%	21%	Clear	WSW 4 mph7 km/h
DayMostly clear and warm, with a high of 81°F27°C and morning low of 60°F15°C. Light wind from the WNW around 5 mph7 km/h. Dry air. NightMostly clear, with a low around 59°F15°C. Light wind from the SW around 4 mph6 km/h.
	MondayOct 5	80°F27°C	59°F15°C	0.01 in0.2 mm· 2%	20%	Clear	WSW 4 mph6 km/h
DayMostly clear and warm, with a high of 80°F27°C and morning low of 59°F15°C. Light wind from the WNW around 4 mph7 km/h. NightMostly clear, with a low around 59°F15°C. Light wind from the SW around 3 mph6 km/h.
	TuesdayOct 6	81°F27°C	59°F15°C	0 in0.1 mm· 3%	22%	Clear	WSW 4 mph6 km/h
DayMostly clear and warm, with a high of 81°F27°C and morning low of 60°F16°C. Light wind from the W around 4 mph7 km/h. NightMostly clear, with a low around 59°F15°C. Light wind from the SW around 3 mph5 km/h.
	WednesdayOct 7	80°F27°C	60°F15°C	0.01 in0.3 mm· 3%	27%	Clear	WSW 4 mph6 km/h
DayMostly clear and warm, with a high of 80°F27°C and morning low of 60°F16°C. Light wind from the W around 4 mph7 km/h. NightPartly cloudy, with a low around 60°F15°C. Light wind from the SSW around 3 mph5 km/h.

Nearby Cities

Castro Valley2 mi3 km Ashland3 mi4 km San Lorenzo3 mi5 km San Leandro6 mi9 km Union City6 mi10 km Dublin8 mi13 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.

WeatherMesh consistently outperforms legacy models in independent benchmarks. View Benchmarks →

Access WeatherMesh forecasts programmatically via our API. API Documentation →

How to Access Weather Forecasts

Pattern	Example	Description
/weather/{country}/{city}/	/weather/united-states/san-francisco/	City forecast (canonical URL)
/weather/{city}/	/weather/tokyo/	Shorthand — redirects to most populous match
/weather/{country}/{region}/{city}/	/weather/united-states/california/san-francisco/	With region — redirects to canonical
/weather/nearby?lat={lat}&lon={lon}	/weather/nearby?lat=48.1&lon=11.5	Find nearest city by coordinates
/weather/{country}/	/weather/germany/	Country index — all cities by region

Country and city names use lowercase slugs with hyphens (e.g. united-states, san-francisco). Arbitrary city names are supported — if not in our database, we geocode the name and serve the forecast for that location.

For programmatic access, use theWindBorne Forecast APIwhich returns structured JSON for any coordinates worldwide.

Coordinates: 37.6688°N, 122.0808°W·Elevation: 34m·Timezone: America/Los_Angeles·Population: 158,289