Hamilton, Ohio Weather
Fireflies pulse through the magnolias. Day 77 of spring. Read this microseason across nine climate regions →
Hamilton weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Partly Cloudy——84°52°—
- FridayJun 5Overcast——86°60°+2°
- SaturdayJun 6Rain39%0.03″80°66°-6°
- SundayJun 7Heavy Drizzle42%—81°68°+1°
- MondayJun 8Light Rain19%0.20″75°68°-6°
- TuesdayJun 9Light Drizzle25%0.01″73°67°-2°
- WednesdayJun 10Light Drizzle20%0.01″79°68°+6°
Ozone at AQI 500 — peak already passed at 1 PM under clear skies. AQI up 12 over the last 6 hours (gradual rise). Levels should ease through evening.
AVOID OUTDOORS Avoid outdoor exertion. Keep windows closed; use HEPA filtration indoors if available.
What's driving it
Ozone × UV × Sky
Ozone at AQI 500 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 500
- UV peak
- 7.2 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 500
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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 4:04 AM
- Moonset
- 1:41 PM
- In sign
- ♒︎ Aquarius
Fireflies pulse through the magnolias
Hamilton at a glance
- Today vs. normal: 7°F above the seasonal normal for this latitude
- Last frost: April 12 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Peak growing season
As of June 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 — Hamilton
SPC has placed Hamilton in the Marginal Risk category for severe thunderstorms day after tomorrow.
- TODAYNONENo severe risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3MRGLMarginal Risk
Isolated severe storms possible. Limited threat for hail or damaging wind.
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.