Cincinnati, Ohio Weather
Thunder quiets the land. Day 93 of summer. Read this microseason across nine climate regions →
Cincinnati weather forecast — hour by hour, 7-day outlook, NOAA radar
Conditions updated 1:37 AM EDT · Open-Meteo
- TodaySep 21Light Drizzle later38%0.01″78°62°—
- TuesdaySep 22Overcast——68°60°-10°
- WednesdaySep 23Drizzle—0.02″68°60°0°
- ThursdaySep 24Light Drizzle—0.02″71°58°+3°
- FridaySep 25Overcast——70°50°-1°
- SaturdaySep 26Overcast——70°48°0°
- SundaySep 27Overcast——73°51°+3°
Air quality now AQI 50 · Good
AQI 50 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 5.7 µg/m³ (AQI 32) with a 0.98 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in stagnant 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 5.7 µg/m³ (AQI 32) with a 0.98 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in stagnant air, not road dust.
- PM2.5/PM10
- 0.98
- Wind
- light
- 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).
September dries up ditches or breaks down bridges.
- Moonrise
- 5:07 PM
- Moonset
- 2:02 AM
- In sign
- ♑︎ Capricorn
Thunder quiets the land
Read this microseason across nine climate regions →
All 72 microseasons on the year wheel →
Cincinnati at a glance
- Today vs. normal: Today averages 70°F (high 78°F, low 62°F), 2°F above the 68°F normal for Sep 21
- Last frost: April 16 (1991–2020 median, NOAA station 9 km away)
- Microseason: Sep 21–25
- Planting calendar: September — plant garlic (overwinter); harvest tomatoes, peppers, beans, summer squash, winter squash
15-Day Forecast — Cincinnati
- Mon76°62°38%
- Tue68°60°4%
- Wed70°60°9%
- Thu72°60°5%
- Fri70°51°0%
- Sat69°48°0%
- Sun73°51°2%
- Mon76°50°6%
- Tue81°57°20%
- Wed76°60°22%
- Thu71°51°13%
- Fri75°52°13%
- Sat81°55°13%
- Sun79°60°13%
- Mon90°65°16%
Forecast data from Open-Meteo (CC BY 4.0).
Live wind & temperature near Cincinnati
Interactive wind and temperature map centered on Cincinnati — it loads in your browser. Open the full weather map.
Right now in the garden
Fall planting + final harvests
As of September 21, the season's first frost (typically October 25) is approaching. Pick what frost-tender plants still carry before the next cold front. This city's planting calendar for September: plant garlic (overwinter); harvest tomatoes, peppers, beans, summer squash, and winter squash.
SPC Convective Outlook
Storm Prediction Center — Cincinnati
SPC has placed Cincinnati in the Marginal Risk category for severe thunderstorms today.
- TODAYMRGLMarginal Risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3NONENo severe risk
Isolated severe storms possible. Limited threat for hail or damaging wind.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook.
Sun & seasons in Cincinnati
Cincinnati sits in Hamilton County, where the year’s longest day runs 14h 55m of daylight and its shortest just 9h 25m — a swing of +5h 31m between the June and December solstices. Clocks spring forward on Sunday, March 8, 2026 and fall back on Sunday, November 1, 2026.
Cincinnati is the state’s largest city. The nearest town Cincinnati tracks is Cheviot, roughly 6 miles to the W.
Air quality in Cincinnati
Air quality in Cincinnati’s county has held roughly steady since 2020; its cleanest year on record was 2024 (median AQI 52). See the full air-quality history for Cincinnati.
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| March | lettuce, peas, spinach, radishes | — |
| April | lettuce, peas, spinach, radishes | radishes |
| May | tomatoes, peppers, beans, squash | lettuce, peas, spinach, radishes |
| June | tomatoes, peppers, beans, squash | lettuce, peas, spinach, radishes, summer squash |
| July | tomatoes, peppers, beans, squash | tomatoes, peppers, beans, summer squash, garlic |
| August | beans, squash, fall brassicas, carrots | tomatoes, peppers, beans, summer squash, winter squash |
| September | garlic (overwinter) | tomatoes, peppers, beans, summer squash, winter squash |
| October | garlic (overwinter) | tomatoes, peppers, beans, summer squash, winter squash, fall brassicas, carrots |
| November | — | fall brassicas, carrots |
A year in weather
The year in Cincinnati tops out in July (~78°F) and dips lowest in January (~30°F), with May wettest at 4.4 inches and September driest at 2.3 inches.
| Month | Mean temp | Precip |
|---|---|---|
| January | 30° | 3.0″ |
| February | 34° | 3.0″ |
| March | 43° | 4.1″ |
| April | 55° | 4.2″ |
| May | 63° | 4.4″ |
| June | 73° | 3.6″ |
| July | 78° | 3.4″ |
| August | 77° | 3.0″ |
| September | 70° | 2.3″ |
| October | 58° | 2.6″ |
| November | 44° | 3.1″ |
| December | 34° | 3.9″ |
Regional context
Similar climates St. Bernard, OH, Norwood, OH, Elmwood Place, OH
Per modelled 1991-2020 normals (EC_Earth3P_HR model via Open-Meteo), Cincinnati runs from a 30°F January mean to 78°F in July, a 47°F seasonal spread, with near 40.6 inches of precipitation.
No season owns Cincinnati's rain: May reaches 4.4 inches and September keeps 2.3 inches, an even spread through Cincinnati's year. That even rhythm groups Cincinnati with places like St. Bernard, OH, Norwood, OH and Elmwood Place, OH.
Around April 16, Cincinnati sheds its freezing nights — peas, lettuce, spinach, and radishes go into Cincinnati's beds. Tomatoes and peppers do best set out two weeks later in Cincinnati, once nights clear the mid-40s°F. Frost returns to Cincinnati near October 25, ending the tender-crop season. That date is a median: Cincinnati freezes sooner in half of years.
Similar climates: St. Bernard, OH, Norwood, OH, Elmwood Place, OH, Golf Manor, OH, Ridgewood, OH.
Frequently asked
- When does it freeze in Cincinnati?
- In Cincinnati, expect the last spring frost near April 16; Cincinnati's first autumn frost comes around October 25.
- What is the rainy season in Cincinnati?
- Rainfall in Cincinnati peaks in May near 4.4 inches, out of about 41 inches annually.
- What is the warmest month in Cincinnati?
- Cincinnati peaks in July, when the mean runs near 78°F.
- What is the coldest month in Cincinnati?
- January is Cincinnati's coldest month, averaging about 30°F.
- When can I start a vegetable garden in Cincinnati?
- In Cincinnati, sow peas and hardy greens around April 16; Cincinnati's tomatoes and peppers wait two weeks more.
- What hardiness zone is Cincinnati?
- With January around 30°F, Cincinnati's zone reflects that minimum — the USDA ZIP map confirms Cincinnati's band.
- What is the 10-day forecast for Cincinnati?
- Cincinnati's extended outlook — daily high and low temperatures and precipitation chances for each upcoming day — is in the daily forecast above.
- Will it rain this week in Cincinnati?
- See this week's day-by-day rain chances for Cincinnati in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Cincinnati?
- Current conditions for Cincinnati and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Cincinnati forecast updated?
- The Cincinnati forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Cincinnati?
- Today's sunrise and sunset times for Cincinnati are in the Almanac section above, along with civil dawn, civil dusk, and day length. Day length is longest near the summer solstice and shortest near the winter solstice.
- How accurate is the weather forecast for Cincinnati?
- The next few days in Cincinnati's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Cincinnati sits at 39.1°N; its climate zone is humid subtropical (Köppen approximation).
ZIP codes in Cincinnati
- 45201
- 45202
- 45203
- 45204
- 45205
- 45206
- 45207
- 45208
- 45209
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- 45299
- 45999