Walnut Creek, Ohio Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Walnut Creek weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Drizzle36%0.03″93°70°—
- SundayJul 5Rain47%0.50″86°71°-7°
- MondayJul 6Thunderstorm58%—78°65°-8°
- TuesdayJul 7Light Drizzle19%—80°63°+2°
- WednesdayJul 8Overcast10%—84°62°+4°
- ThursdayJul 9Light Drizzle46%0.01″83°65°-1°
- FridayJul 10Thunderstorm48%—78°68°-5°
AQI 33 (Good), driven by Ozone. AQI down 8 over the last 6 hours (gradual decline). Ozone at AQI 47. Overcast through the UV peak window (cloud cover ~64%) — afternoon ozone should stay flat.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion during the projected peak around 8 PM.
What's driving it
Ozone × UV × Sky
Ozone at AQI 47. Overcast through the UV peak window (cloud cover ~64%) — afternoon ozone should stay flat.
- Present
- AQI 47
- UV peak
- 4.6 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 14
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
- 11:22 PM
- Moonset
- 10:30 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Walnut Creek at a glance
- Today vs. normal: 7°F above the seasonal normal for this latitude
- Last frost: April 19 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 44687
16-Day Forecast — Walnut Creek
- Sat92°70°36%
- Sun86°71°47%
- Mon78°65°58%
- Tue80°63°19%
- Wed84°62°10%
- Thu83°65°46%
- Fri78°68°48%
- Sat83°65°36%
- Sun74°61°23%
- Mon66°56°11%
- Tue79°60°12%
- Wed84°64°23%
- Thu87°67°42%
- Fri84°68°28%
- Sat85°68°36%
- Sun84°66°32%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 4, 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 — Walnut Creek
SPC has placed Walnut Creek in the Slight Risk category for severe thunderstorms today.
- TODAYSLGTSlight Risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
Scattered severe storms possible. A few tornadoes, hail, and damaging wind gusts possible.
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 Walnut Creek
- 44681
- 44687
- 44654