Rosemont, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Rosemont, a community in Sacramento County, California.
Today
102°F
Sunny
Sunny, with a high near 102. South southwest wind 3 to 8 mph.
7-day forecast for Rosemont
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 102°F | Sunny | 3 to 8 mph SSW | 0% |
| Tonight | 63°F | Clear | 5 to 8 mph S | 0% |
| Wednesday | 100°F | Sunny | 3 to 8 mph SSW | 0% |
| Wednesday Night | 63°F | Clear | 5 to 8 mph SSW | 0% |
| Thursday | 100°F | Sunny | 2 to 8 mph SSW | 0% |
| Thursday Night | 64°F | Clear | 3 to 8 mph S | 0% |
| Friday | 101°F | Sunny | 2 to 7 mph SW | 0% |
| Friday Night | 65°F | Clear | 5 to 8 mph SSW | 0% |
| Saturday | 103°F | Sunny | 2 to 7 mph SSW | 0% |
| Saturday Night | 67°F | Clear | 7 mph SSW | 0% |
| Sunday | 99°F | Sunny | 3 to 9 mph SSW | 0% |
| Sunday Night | 63°F | Mostly Clear | 6 to 9 mph SSW | 0% |
| Monday | 93°F | Sunny | 6 to 9 mph SSW | 0% |
| Monday Night | 60°F | Mostly Clear | 5 to 9 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 Aug 4, 2026.