Palo Alto, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Palo Alto, a city in Santa Clara County, California.
Today
91°F
Sunny
Sunny. High near 91, with temperatures falling to around 89 in the afternoon. North wind 1 to 8 mph.
7-day forecast for Palo Alto
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 91°F | Sunny | 1 to 8 mph N | 0% |
| Tonight | 59°F | Mostly Clear | 1 to 6 mph NNW | 0% |
| Wednesday | 90°F | Sunny | 1 to 7 mph NW | 0% |
| Wednesday Night | 60°F | Mostly Clear | 0 to 6 mph W | 0% |
| Thursday | 88°F | Sunny | 0 to 7 mph W | 0% |
| Thursday Night | 61°F | Mostly Clear | 1 to 7 mph WNW | 0% |
| Friday | 92°F | Sunny | 1 to 7 mph NW | 0% |
| Friday Night | 62°F | Mostly Clear | 1 to 7 mph W | 0% |
| Saturday | 92°F | Sunny | 1 to 7 mph WNW | 0% |
| Saturday Night | 63°F | Mostly Clear | 2 to 7 mph W | 0% |
| Sunday | 88°F | Sunny | 2 to 8 mph W | 0% |
| Sunday Night | 60°F | Mostly Clear | 5 to 8 mph WSW | 0% |
| Monday | 84°F | Sunny | 3 to 8 mph WSW | 0% |
| Monday Night | 58°F | Mostly Clear | 3 to 8 mph WSW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Palo Alto (37.397, -122.143). Updated through the day.
Growing snapshot for Palo Alto
Last spring frost
Feb 1
First fall frost
Dec 7
Growing season
310 days
Hardiness zone
9b
More local growing data for Palo Alto: nearby ZIP 94306 weather · frost dates · planting calendar · California frost dates
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Climate data from the nearest NOAA station, Palo Alto, Ca (2 mi from Palo Alto). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.