Hayward, CA Weather & Growing Conditions
Overnight
56°F
Mostly Clear
Mostly clear, with a low around 56. West southwest wind around 2 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 56°F | Mostly Clear | 2 mph WSW | 0% |
| Tuesday | 86°F | Haze then Sunny | 2 to 9 mph WSW | 0% |
| Tuesday Night | 57°F | Mostly Clear | 2 to 8 mph WNW | 0% |
| Wednesday | 83°F | Sunny | 2 to 8 mph W | 0% |
| Wednesday Night | 58°F | Mostly Clear | 2 to 8 mph W | 0% |
| Thursday | 81°F | Mostly Sunny | 2 to 9 mph W | 0% |
| Thursday Night | 59°F | Mostly Clear | 2 to 9 mph W | 0% |
| Friday | 84°F | Mostly Sunny | 2 to 8 mph W | 0% |
| Friday Night | 61°F | Partly Cloudy | 3 to 8 mph WSW | 0% |
| Saturday | 84°F | Sunny | 2 to 9 mph WSW | 0% |
| Saturday Night | 62°F | Mostly Clear | 5 to 9 mph WSW | 0% |
| Sunday | 79°F | Sunny | 5 to 9 mph WSW | 0% |
| Sunday Night | 58°F | Partly Cloudy | 9 mph WSW | 0% |
| Monday | 75°F | Mostly Sunny | 7 to 10 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 (4.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.