Johnsville, California Weather
Bay laurel fragrance sweetens shade. Day 90 of spring. Read this microseason across nine climate regions →
Johnsville weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 16Clear——85°63°—
- WednesdayJun 17Overcast——82°61°-3°
- ThursdayJun 18Overcast——89°55°+7°
- FridayJun 19Light Drizzle40%—74°45°-15°
- SaturdayJun 20Clear——74°44°0°
- SundayJun 21Overcast——83°47°+9°
- MondayJun 22Partly Cloudy——88°51°+5°
AQI 60 (Moderate), driven by Ozone. AQI up 30 in the last 6 hours — air quality is degrading. Ozone at AQI 70 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 70 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 70
- UV peak
- 2.9 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 70
PM × Wind × Precip
PM2.5 at 5.1 µg/m³, PM10 at 6.5 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.78
- Wind
- breezy
- Recent rain
- 0h in last 6h
- Pattern
- background
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 8:10 AM
- Moonset
- 10:43 PM
- In sign
- ♋︎ Cancer
Bay laurel fragrance sweetens shade
Johnsville at a glance
- Today vs. normal: 5°F above the seasonal normal for this latitude
- Last frost: April 15 (climatological average for this latitude)
- Microseason: Jun 16–20
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
16-Day Forecast — Johnsville
- Tue85°63°0%
- Wed82°61°2%
- Thu89°55°7%
- Fri74°45°40%
- Sat74°44°1%
- Sun83°47°1%
- Mon88°51°0%
- Tue84°53°0%
- Wed79°48°0%
- Thu78°50°0%
- Fri81°45°1%
- Sat81°46°1%
- Sun83°49°0%
- Mon86°50°0%
- Tue83°51°0%
- Wed84°50°7%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of June 17, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
ZIP codes in Johnsville
- 96103