Cincinnati, Ohio Weather
Fireflies pulse through the magnolias. Day 76 of spring. Read this microseason across nine climate regions →
Cincinnati weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Partly Cloudy——81°54°—
- ThursdayJun 4Overcast——86°59°+5°
- FridayJun 5Overcast——83°63°-3°
- SaturdayJun 6Light Drizzle37%—83°64°0°
- SundayJun 7Showers37%—83°66°0°
- MondayJun 8Drizzle14%—82°66°-1°
- TuesdayJun 9Light Drizzle12%—81°63°-1°
Ozone at AQI 78 now. AQI down 5 over the last 6 hours (steady decline since this morning). With UV 7.6 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 79 by mid-afternoon.
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 78 now. With UV 7.6 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 79 by mid-afternoon.
- Present
- AQI 78
- UV peak
- 7.6 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 79
PM × Wind × Precip
PM2.5 at 8.0 µg/m³ (AQI 44) with a 0.89 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.89
- 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).
The higher the clouds, the finer the weather.
- Moonrise
- 3:26 AM
- Moonset
- 12:39 PM
- In sign
- ♑︎ Capricorn
Fireflies pulse through the magnolias
Cincinnati at a glance
- Today vs. normal: 77°F — typical for the season
- Last frost: April 11 (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 3, 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.
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| January | — | — |
| February | — | — |
| March | — | — |
| April | lettuce, peas, spinach, radishes | — |
| May | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| June | tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| July | tomatoes, peppers, beans, squash | tomatoes, beans, summer squash |
| August | — | tomatoes, beans, summer squash |
| September | fall brassicas, garlic (overwinter), carrots | tomatoes, beans, summer squash |
| October | fall brassicas, garlic (overwinter), carrots | winter squash, tomatoes (last) |
| November | — | — |
| December | — | — |
A year in weather
July brings Cincinnati's warmest temperatures (~76°F mean) while January delivers the coldest (~32°F). Precipitation reaches its peak in May (4.7 inches) and drops to its lowest point in February (2.8 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 32° | 2.9″ | 6 |
| February | 35° | 2.8″ | 6 |
| March | 44° | 3.9″ | 8 |
| April | 55° | 4.4″ | 8 |
| May | 64° | 4.7″ | 9 |
| June | 72° | 4.6″ | 8 |
| July | 76° | 4.4″ | 7 |
| August | 75° | 3.4″ | 6 |
| September | 68° | 3.1″ | 5 |
| October | 56° | 3.0″ | 6 |
| November | 45° | 2.9″ | 6 |
| December | 36° | 3.3″ | 6 |
Regional context
Cincinnati falls within a humid subtropical climate region that shares similar temperature ranges, seasonal patterns, and growing conditions with other nearby cities.
Similar climates: Columbus, OH, Dayton, OH, Middletown, OH, Newark, OH, Springfield, OH.
Naturalist notes
Red-winged blackbirds return to Cincinnati's wetlands in early March, their distinctive calls signaling winter's retreat.
Redbud trees bloom throughout the city in mid-April, painting neighborhoods with bright pink flowers before their heart-shaped leaves emerge.
Frequently asked
- When does it freeze in Cincinnati?
- Cincinnati's last spring frost usually occurs around mid-April, while the first fall frost typically arrives around mid-November.
- What is the rainy season in Cincinnati?
- May stands as the wettest month with about 4.7 inches of rain on average, contributing to the city's roughly 43 inches annually.
- What is the warmest month in Cincinnati?
- July typically brings the warmest temperatures, averaging about 76°F.
- What is the coldest month in Cincinnati?
- January typically delivers the coldest temperatures, averaging about 32°F.
- When can I start a vegetable garden in Cincinnati?
- Cool-season crops like peas and lettuce can be planted around the last spring frost in mid-April, while warm-season crops such as tomatoes and peppers should wait until 1–2 weeks after.
- How many rainy days does Cincinnati get?
- Cincinnati experiences about 80 rainy days per year on average.
- What hardiness zone is Cincinnati?
- Cincinnati's USDA hardiness zone depends on its lowest average winter temperature; you can find the current zone designation by checking the USDA's online lookup with the city ZIP code.
Climate
Cincinnati, Ohio experiences a humid subtropical climate zone. Temperatures hover near 32°F in January and average 76°F in July, creating a 44°F seasonal swing.
Throughout the year, Cincinnati collects about 43 inches of precipitation distributed across roughly 80 rainy days.
Weather patterns here depend on the city's latitude (39.1°N), proximity to large water bodies, and elevation. These factors determine what grows in the area, when frost occurs, and daily weather conditions.