Hayward, CA Weather & Growing Conditions
Overnight
58°F
Mostly Cloudy
Mostly cloudy, with a low around 58. West wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 58°F | Mostly Cloudy | 5 mph W | 0% |
| Saturday | 78°F | Mostly Sunny | 2 to 9 mph WSW | 0% |
| Saturday Night | 58°F | Mostly Cloudy | 3 to 8 mph WNW | 0% |
| Sunday | 72°F | Cloudy | 3 to 8 mph W | 2% |
| Sunday Night | 58°F | Mostly Cloudy | 5 to 8 mph WSW | 2% |
| Monday | 74°F | Mostly Sunny | 5 to 10 mph WSW | 0% |
| Monday Night | 58°F | Partly Cloudy | 2 to 10 mph WSW | 0% |
| Tuesday | 76°F | Mostly Sunny | 2 to 9 mph WSW | 0% |
| Tuesday Night | 58°F | Partly Cloudy | 1 to 9 mph WSW | 0% |
| Wednesday | 85°F | Mostly Sunny | 1 to 8 mph WSW | 0% |
| Wednesday Night | 61°F | Partly Cloudy | 1 to 8 mph WSW | 0% |
| Thursday | 86°F | Sunny | 1 to 9 mph WSW | 0% |
| Thursday Night | 61°F | Partly Cloudy | 2 to 9 mph WSW | 0% |
| Friday | 80°F | Mostly Sunny | 2 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 (3.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.