McArthur, California Weather
Summer heat deepens across the valleys. Day 15 of summer. Read this microseason across nine climate regions →
McArthur weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Overcast——88°57°—
- MondayJul 6Overcast——88°60°0°
- TuesdayJul 7Clear——92°51°+4°
- WednesdayJul 8Clear——93°51°+1°
- ThursdayJul 9Clear——95°53°+2°
- FridayJul 10Overcast——97°55°+2°
- SaturdayJul 11Overcast——100°58°+3°
AQI 40 (Good), driven by Ozone. AQI flat over the last 6 hours (within ±3 points). Ozone at AQI 80. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
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 80. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
- Present
- AQI 80
- UV peak
- 9.6 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 51
PM × Wind × Precip
PM2.5 at 6.0 µg/m³ (AQI 33), ratio 0.61 with 7 mph wind — characteristic of long-range haze transport rather than a local source.
- PM2.5/PM10
- 0.61
- 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
- 11:26 PM
- Moonset
- 11:23 AM
- In sign
- ♓︎ Pisces
Summer heat deepens across the valleys
McArthur at a glance
- Today vs. normal: 13°F above the seasonal normal for this latitude
- Last frost: April 22 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 96056
16-Day Forecast — McArthur
- Sun88°57°2%
- Mon88°60°3%
- Tue92°51°0%
- Wed93°51°0%
- Thu95°53°0%
- Fri97°55°0%
- Sat100°58°0%
- Sun89°63°1%
- Mon91°60°2%
- Tue99°59°3%
- Wed99°59°3%
- Thu99°58°3%
- Fri100°61°3%
- Sat100°61°6%
- Sun95°63°10%
- Mon96°55°10%
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.
SPC Convective Outlook
Storm Prediction Center — McArthur
SPC includes McArthur in the general thunderstorm area today — no severe risk, but storms are possible.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3NONENo severe risk
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.
ZIP codes in McArthur
- 96056
- 96028