Round Rock, Arizona Weather
The monsoon settles in. Day 15 of summer. Read this microseason across nine climate regions →
Round Rock weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Overcast——94°59°—
- MondayJul 6Overcast——92°69°-2°
- TuesdayJul 7Overcast——96°72°+4°
- WednesdayJul 8Drizzle——98°73°+2°
- ThursdayJul 9Overcast——98°73°0°
- FridayJul 10Mostly Clear——97°73°-1°
- SaturdayJul 11Clear——101°74°+4°
AQI 33 (Good), driven by PM2.5. AQI down 14 over the last 6 hours (gradual decline). PM2.5 at 8.7 µg/m³ (AQI 48) with a 0.81 fine-to-coarse ratio and 2 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 8.7 µg/m³ (AQI 48) with a 0.81 fine-to-coarse ratio and 2 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.81
- 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
- 11:35 PM
- Moonset
- 11:34 AM
- In sign
- ♓︎ Pisces
The monsoon settles in
Round Rock at a glance
- Today vs. normal: 16°F below the seasonal normal for this latitude
- Last frost: March 26 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 86547
16-Day Forecast — Round Rock
- Sun94°59°2%
- Mon92°69°6%
- Tue96°72°8%
- Wed98°73°5%
- Thu98°73°2%
- Fri97°73°1%
- Sat101°74°3%
- Sun103°73°10%
- Mon101°76°10%
- Tue95°77°10%
- Wed96°74°21%
- Thu97°75°26%
- Fri99°73°31%
- Sat102°76°32%
- Sun101°76°19%
- Mon102°77°21%
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 — Round Rock
SPC includes Round Rock in the general thunderstorm area tomorrow — no severe risk, but storms are possible.
- TODAYNONENo severe risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
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 Round Rock
- 86547