Grimes, California Weather
Summer heat deepens across the valleys. Day 15 of summer. Read this microseason across nine climate regions →
Grimes weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Overcast——91°59°—
- MondayJul 6Clear——91°57°0°
- TuesdayJul 7Overcast——99°54°+8°
- WednesdayJul 8Clear——103°56°+4°
- ThursdayJul 9Clear——104°61°+1°
- FridayJul 10Overcast——106°61°+2°
- SaturdayJul 11Overcast——109°64°+3°
AQI 27 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 7.5 µg/m³ (AQI 42) with a 0.76 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust.
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 7.5 µg/m³ (AQI 42) with a 0.76 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.76
- Wind
- calm
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
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
- 11:27 PM
- Moonset
- 11:26 AM
- In sign
- ♓︎ Pisces
Summer heat deepens across the valleys
Grimes at a glance
- Today vs. normal: 73°F — typical for the season
- Last frost: April 10 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 95950
16-Day Forecast — Grimes
- Sun91°59°1%
- Mon91°57°1%
- Tue99°54°0%
- Wed103°56°0%
- Thu104°61°0%
- Fri106°61°0%
- Sat109°64°0%
- Sun111°63°1%
- Mon115°74°2%
- Tue116°75°3%
- Wed102°71°1%
- Thu100°77°3%
- Fri110°73°3%
- Sat117°73°6%
- Sun117°74°0%
- Mon111°63°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 Grimes
- 95950