Rosemont, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Rosemont, a community in Sacramento County, California.
Tonight
57°F
Clear
Clear. Low around 57, with temperatures rising to around 59 overnight. South wind around 5 mph.
7-day forecast for Rosemont
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 57°F | Clear | 5 mph S | 0% |
| Saturday | 90°F | Sunny | 3 mph SW | 0% |
| Saturday Night | 60°F | Partly Cloudy | 5 mph SSW | 0% |
| Sunday | 85°F | Partly Sunny | 6 mph SSW | 0% |
| Sunday Night | 56°F | Mostly Cloudy | 6 mph SSW | 0% |
| Monday | 88°F | Mostly Sunny | 3 to 7 mph SSW | 0% |
| Monday Night | 58°F | Mostly Clear | 3 to 7 mph S | 0% |
| Tuesday | 89°F | Sunny | 5 mph SSW | 0% |
| Tuesday Night | 59°F | Clear | 5 mph S | 0% |
| Wednesday | 95°F | Sunny | 3 mph SW | 0% |
| Wednesday Night | 64°F | Mostly Clear | 0 to 3 mph S | 0% |
| Thursday | 97°F | Sunny | 1 to 5 mph SW | 0% |
| Thursday Night | 64°F | Mostly Clear | 5 mph SSW | 0% |
| Friday | 92°F | Sunny | 3 to 7 mph SSW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Rosemont (38.548, -121.355). Updated through the day.
Growing snapshot for Rosemont
Last spring frost
Jan 12
First fall frost
Dec 16
Growing season
341 days
Hardiness zone
9b
More local growing data for Rosemont: nearby ZIP 95826 weather · frost dates · planting calendar · California frost dates
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Climate data from the nearest NOAA station, Sacramento 5 Ese, Ca (2.2 mi from Rosemont). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.