Hartley, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hartley, a community in Solano County, California.
Overnight
49°F
Mostly Clear
Mostly clear. Low around 49, with temperatures rising to around 51 overnight. North northwest wind around 12 mph, with gusts as high as 25 mph.
7-day forecast for Hartley
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 49°F | Mostly Clear | 12 mph NNW | 0% |
| Wednesday | 70°F | Sunny | 1 to 13 mph NNW | 2% |
| Wednesday Night | 49°F | Mostly Cloudy | 1 mph NW | 2% |
| Thursday | 73°F | Mostly Sunny | 1 to 9 mph NNW | 0% |
| Thursday Night | 49°F | Clear | 0 to 3 mph NW | 0% |
| Friday | 72°F | Sunny | 0 to 5 mph NNE | 0% |
| Friday Night | 49°F | Mostly Clear | 1 mph NE | 0% |
| Saturday | 72°F | Sunny | 0 to 3 mph NE | 0% |
| Saturday Night | 49°F | Mostly Clear | 0 mph | 0% |
| Sunday | 74°F | Sunny | 0 to 3 mph NNE | 0% |
| Sunday Night | 50°F | Partly Cloudy | 1 mph E | 0% |
| Monday | 72°F | Mostly Sunny | 2 mph WNW | 0% |
| Monday Night | 49°F | Partly Cloudy | 1 mph WNW | 2% |
| Tuesday | 72°F | Sunny | 2 mph NNE | 7% |
Forecast source: National Weather Service (api.weather.gov) for Hartley (38.420, -121.951). Updated through the day.
Growing snapshot for Hartley
Last spring frost
Feb 18
First fall frost
Nov 28
Growing season
283 days
Hardiness zone
9b
More local growing data for Hartley: nearby ZIP 95625 weather · frost dates · planting calendar · California frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Vacaville Nut Tree Ap, Ca (3 mi from Hartley). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.