Hayward, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hayward, a city in Alameda County, California.
This Afternoon
65°F
Light Rain Likely
Rain likely. Partly sunny. High near 65, with temperatures falling to around 61 in the afternoon. South southwest wind 5 to 12 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Hayward
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 65°F | Light Rain Likely | 5 to 12 mph SSW | 70% |
| Tonight | 50°F | Chance Light Rain then Mostly Cloudy | 3 to 8 mph E | 40% |
| Wednesday | 66°F | Sunny | 2 to 10 mph NNW | 1% |
| Wednesday Night | 51°F | Mostly Cloudy then Patchy Fog | 2 to 10 mph NNW | 0% |
| Thursday | 68°F | Patchy Fog then Mostly Sunny | 2 to 8 mph N | 0% |
| Thursday Night | 51°F | Mostly Clear | 2 to 8 mph W | 0% |
| Friday | 70°F | Sunny | 2 to 6 mph N | 0% |
| Friday Night | 51°F | Mostly Clear | 1 to 6 mph ESE | 0% |
| Saturday | 73°F | Sunny | 2 to 6 mph N | 0% |
| Saturday Night | 53°F | Mostly Clear | 2 to 6 mph WNW | 0% |
| Sunday | 72°F | Mostly Sunny | 2 to 7 mph NW | 0% |
| Sunday Night | 54°F | Partly Cloudy | 1 to 7 mph WSW | 0% |
| Monday | 70°F | Partly Sunny | 1 to 8 mph SW | 1% |
| Monday Night | 53°F | Mostly Cloudy | 2 to 8 mph SW | 1% |
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
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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 Nov 4, 2026.