Knightsen, CA Weather & Growing Conditions
Overnight
62°F
Clear
Clear. Low around 62, with temperatures rising to around 64 overnight. West northwest wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 62°F | Clear | 5 mph WNW | 0% |
| Tuesday | 104°F | Sunny | 5 to 14 mph WNW | 0% |
| Tuesday Night | 62°F | Clear | 3 to 12 mph WNW | 0% |
| Wednesday | 99°F | Sunny | 5 to 13 mph WNW | 0% |
| Wednesday Night | 61°F | Clear | 5 to 13 mph W | 0% |
| Thursday | 97°F | Sunny | 5 to 14 mph W | 0% |
| Thursday Night | 63°F | Clear | 3 to 14 mph W | 0% |
| Friday | 102°F | Sunny | 3 to 13 mph W | 0% |
| Friday Night | 65°F | Clear | 3 to 13 mph W | 0% |
| Saturday | 101°F | Sunny | 3 to 13 mph W | 0% |
| Saturday Night | 66°F | Mostly Clear | 2 to 13 mph W | 0% |
| Sunday | 98°F | Sunny | 3 to 13 mph W | 0% |
| Sunday Night | 62°F | Clear | 3 to 13 mph WSW | 0% |
| Monday | 92°F | Sunny | 5 to 13 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Knightsen, CA
Last spring frost
Jan 12
First fall frost
Dec 19
Growing season
343 days
Hardiness zone
9b
Explore more for Knightsen, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Antioch Pumping Plt #3, Ca (5.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.