Greenfield, California Weather
Summer heat deepens across the valleys. Day 15 of summer. Read this microseason across nine climate regions →
Greenfield weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Overcast——82°55°—
- MondayJul 6Foggy——78°53°-4°
- TuesdayJul 7Foggy——88°53°+10°
- WednesdayJul 8Clear——94°55°+6°
- ThursdayJul 9Clear——94°59°0°
- FridayJul 10Clear——98°58°+4°
- SaturdayJul 11Overcast——103°64°+5°
AQI 38 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 10.7 µg/m³ (AQI 54), ratio 0.67 with 8 mph wind — characteristic of long-range haze transport rather than a local source.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
PM × Wind × Precip
PM2.5 at 10.7 µg/m³ (AQI 54), ratio 0.67 with 8 mph wind — characteristic of long-range haze transport rather than a local source.
- PM2.5/PM10
- 0.67
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- transport
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).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:23 PM
- Moonset
- 11:24 AM
- In sign
- ♓︎ Pisces
Summer heat deepens across the valleys
Greenfield at a glance
- Today vs. normal: 8°F below the seasonal normal for this latitude
- Last frost: March 25 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 93927
16-Day Forecast — Greenfield
- Sun82°55°4%
- Mon78°53°0%
- Tue88°53°1%
- Wed94°55°0%
- Thu94°59°0%
- Fri98°58°0%
- Sat103°64°1%
- Sun103°64°1%
- Mon109°73°5%
- Tue107°70°2%
- Wed86°69°1%
- Thu103°74°0%
- Fri108°75°0%
- Sat115°80°3%
- Sun110°70°3%
- Mon103°67°3%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 5, 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 Greenfield
- 93927