Hilmar-Irwin, CA Weather & Growing Conditions
Tonight
47°F
Partly Cloudy
Partly cloudy. Low around 47, with temperatures rising to around 49 overnight. Northwest wind 0 to 10 mph, with gusts as high as 20 mph. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 47°F | Partly Cloudy | 0 to 10 mph NW | 9% |
| Wednesday | 69°F | Sunny | 5 to 15 mph NW | 0% |
| Wednesday Night | 46°F | Partly Cloudy | 0 to 5 mph NW | 0% |
| Thursday | 71°F | Sunny | 0 to 10 mph NW | 0% |
| Thursday Night | 44°F | Clear | 0 to 5 mph NNW | 0% |
| Friday | 73°F | Sunny | 0 to 5 mph NNW | 0% |
| Friday Night | 46°F | Mostly Clear | 0 to 5 mph N | 0% |
| Saturday | 75°F | Sunny | 0 mph | 0% |
| Saturday Night | 48°F | Mostly Clear | 0 mph | 0% |
| Sunday | 75°F | Sunny | 0 to 5 mph N | 0% |
| Sunday Night | 49°F | Partly Cloudy | 0 mph | 0% |
| Monday | 74°F | Mostly Sunny | 0 to 5 mph NNW | 1% |
| Monday Night | 48°F | Partly Cloudy | 0 to 5 mph NW | 1% |
| Tuesday | 74°F | Sunny | 0 mph | 3% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Hilmar-Irwin, CA
Last spring frost
Jan 6
First fall frost
Dec 20
Growing season
351 days
Hardiness zone
9a
Explore more for Hilmar-Irwin, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Turlock #2, Ca (8.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.