Byron, CA Weather & Growing Conditions
Today
92°F
Sunny
Sunny, with a high near 92. West northwest wind 2 to 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 92°F | Sunny | 2 to 6 mph WNW | 0% |
| Tonight | 58°F | Partly Cloudy | 2 to 6 mph WSW | 0% |
| Sunday | 84°F | Partly Sunny | 6 mph W | 0% |
| Sunday Night | 58°F | Mostly Cloudy | 6 mph WSW | 0% |
| Monday | 86°F | Sunny | 8 mph W | 0% |
| Monday Night | 57°F | Mostly Clear | 2 to 8 mph WSW | 0% |
| Tuesday | 88°F | Sunny | 2 to 6 mph W | 0% |
| Tuesday Night | 59°F | Clear | 1 to 6 mph W | 0% |
| Wednesday | 93°F | Sunny | 3 mph WNW | 0% |
| Wednesday Night | 63°F | Mostly Clear | 2 mph WNW | 0% |
| Thursday | 97°F | Sunny | 0 to 3 mph NW | 0% |
| Thursday Night | 64°F | Mostly Clear | 0 to 3 mph WSW | 0% |
| Friday | 91°F | Sunny | 2 to 8 mph WSW | 0% |
| Friday Night | 61°F | Mostly Clear | 2 to 8 mph WSW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Byron, CA
Last spring frost
Jan 19
First fall frost
Dec 10
Growing season
330 days
Hardiness zone
9b
Explore more for Byron, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Tracy Pumping Plt, Ca (5.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.