Hayward, CA Weather & Growing Conditions
Overnight
59°F
Mostly Clear
Mostly clear, with a low around 59. North northwest wind around 2 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 59°F | Mostly Clear | 2 mph NNW | 0% |
| Tuesday | 86°F | Haze then Sunny | 1 to 10 mph WNW | 0% |
| Tuesday Night | 60°F | Mostly Clear | 1 to 9 mph NNW | 0% |
| Wednesday | 84°F | Mostly Sunny | 2 to 9 mph WNW | 0% |
| Wednesday Night | 60°F | Mostly Clear | 1 to 9 mph W | 0% |
| Thursday | 83°F | Mostly Sunny | 1 to 10 mph W | 0% |
| Thursday Night | 61°F | Partly Cloudy | 2 to 10 mph W | 0% |
| Friday | 86°F | Mostly Sunny | 2 to 9 mph W | 0% |
| Friday Night | 63°F | Partly Cloudy | 1 to 9 mph W | 0% |
| Saturday | 86°F | Sunny | 1 to 9 mph W | 0% |
| Saturday Night | 64°F | Mostly Clear | 3 to 9 mph WSW | 0% |
| Sunday | 81°F | Sunny | 3 to 10 mph WSW | 0% |
| Sunday Night | 60°F | Partly Cloudy | 6 to 10 mph WSW | 0% |
| Monday | 77°F | Mostly Sunny | 6 to 12 mph WSW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Hayward, CA
Last spring frost
Jan 2
First fall frost
Dec 25
Growing season
365 days
Hardiness zone
9b
Explore more for Hayward, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Hayward Air Terminal, Ca (3.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.