Hayward, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hayward, a city in Alameda County, California.
Today
81°F
Sunny
Sunny. High near 81, with temperatures falling to around 78 in the afternoon. Northwest wind 2 to 13 mph, with gusts as high as 20 mph.
7-day forecast for Hayward
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 81°F | Sunny | 2 to 13 mph NW | 0% |
| Tonight | 59°F | Mostly Clear | 2 to 12 mph NNW | 0% |
| Wednesday | 80°F | Mostly Sunny | 2 to 13 mph NW | 0% |
| Wednesday Night | 60°F | Mostly Clear | 2 to 13 mph W | 0% |
| Thursday | 78°F | Mostly Sunny | 2 to 13 mph W | 0% |
| Thursday Night | 60°F | Mostly Clear | 2 to 13 mph WNW | 0% |
| Friday | 82°F | Mostly Sunny | 2 to 12 mph WNW | 0% |
| Friday Night | 62°F | Mostly Clear | 2 to 12 mph W | 0% |
| Saturday | 81°F | Sunny | 2 to 12 mph W | 0% |
| Saturday Night | 62°F | Mostly Clear | 3 to 12 mph WSW | 0% |
| Sunday | 77°F | Sunny | 3 to 13 mph WSW | 0% |
| Sunday Night | 60°F | Partly Cloudy | 7 to 13 mph WSW | 0% |
| Monday | 74°F | Mostly Sunny | 6 to 14 mph WSW | 0% |
| Monday Night | 59°F | Partly Cloudy | 6 to 14 mph WSW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Hayward (37.627, -122.104). Updated through the day.
Growing snapshot for Hayward
Last spring frost
Jan 2
First fall frost
Dec 25
Growing season
365 days
Hardiness zone
10a
More local growing data for Hayward: nearby ZIP 94545 weather · frost dates · planting calendar · California frost dates
Nearby towns & communities
Alameda
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Fairview
Fremont
Kensington
Livermore
Mountain House
Newark
Oakland
Piedmont
Pleasanton
San Leandro
San Lorenzo
Sunol
Union City
Climate data from the nearest NOAA station, Hayward Air Terminal, Ca (1.8 mi from Hayward). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.