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.
Overnight
57°F
Partly Cloudy
Partly cloudy, with a low around 57. South southeast wind around 2 mph.
7-day forecast for Palo Alto
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 57°F | Partly Cloudy | 2 mph SSE | 0% |
| Saturday | 82°F | Sunny | 2 to 9 mph NE | 0% |
| Saturday Night | 57°F | Mostly Cloudy | 2 to 7 mph SSE | 0% |
| Sunday | 76°F | Mostly Cloudy | 2 to 7 mph WNW | 2% |
| Sunday Night | 57°F | Mostly Cloudy | 2 to 7 mph W | 2% |
| Monday | 78°F | Mostly Sunny | 2 to 7 mph WSW | 1% |
| Monday Night | 56°F | Partly Cloudy | 2 to 7 mph WSW | 1% |
| Tuesday | 81°F | Sunny | 2 to 7 mph WSW | 0% |
| Tuesday Night | 57°F | Mostly Clear | 1 to 7 mph WSW | 0% |
| Wednesday | 88°F | Sunny | 1 to 7 mph W | 0% |
| Wednesday Night | 61°F | Mostly Clear | 0 to 7 mph W | 0% |
| Thursday | 90°F | Sunny | 0 to 7 mph NW | 0% |
| Thursday Night | 61°F | Mostly Clear | 2 to 7 mph W | 0% |
| Friday | 84°F | Mostly Sunny | 1 to 8 mph W | 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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Mountain View
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Stanford
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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 Sep 19, 2026.