Rocky River, Ohio Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Rocky River weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast41%—89°72°—
- SundayJul 5Heavy Showers30%0.39″78°72°-11°
- MondayJul 6Drizzle23%—79°68°+1°
- TuesdayJul 7Overcast11%—80°66°+1°
- WednesdayJul 8Overcast——88°66°+8°
- ThursdayJul 9Thunderstorm34%—83°67°-5°
- FridayJul 10Light Drizzle34%—79°69°-4°
AQI 46 (Good), driven by Ozone. AQI down 26 over the last 6 hours — air quality is improving sharply. Ozone at AQI 48 now. With UV 4.2 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 27 around 1 PM.
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 48 now. With UV 4.2 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 27 around 1 PM.
- Present
- AQI 48
- UV peak
- 4.2 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 27
PM × Wind × Precip
PM2.5 at 6.4 µg/m³ (AQI 36) with a 0.96 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.96
- 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).








































If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:24 PM
- Moonset
- 10:30 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Rocky River at a glance
- Today vs. normal: 10°F above the seasonal normal for this latitude
- Last frost: April 25 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 44116
16-Day Forecast — Rocky River
- Sat89°72°41%
- Sun78°72°30%
- Mon79°68°23%
- Tue80°66°11%
- Wed88°66°7%
- Thu83°67°34%
- Fri79°69°34%
- Sat83°68°29%
- Sun76°65°25%
- Mon67°58°16%
- Tue79°60°21%
- Wed86°66°24%
- Thu90°70°29%
- Fri88°70°26%
- Sat86°68°24%
- Sun86°67°23%
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 — Rocky River
SPC has placed Rocky River in the Marginal Risk category for severe thunderstorms today.
- TODAYMRGLMarginal Risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
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.
Microseason · July 1–5
Cicadas claim the afternoon
Annual cicada buzz begins, peaking in the heat of the day.
Day 185 of 365 · Wedge 37 of 72
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 is Rocky River's warmest stretch (~74°F) and January its coldest (~25°F); precipitation crests in May at 4.2 inches and ebbs in February to 2.9 inches.
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 25° | 3.0″ | 23 |
| February | 28° | 2.9″ | 20 |
| March | 36° | 3.6″ | 20 |
| April | 48° | 3.7″ | 19 |
| May | 58° | 4.2″ | 18 |
| June | 68° | 4.0″ | 17 |
| July | 74° | 3.7″ | 17 |
| August | 72° | 3.5″ | 16 |
| September | 66° | 3.3″ | 15 |
| October | 54° | 3.3″ | 15 |
| November | 41° | 3.5″ | 21 |
| December | 30° | 3.5″ | 23 |
Regional context
Rocky River swings from 25°F in January to 74°F in July (48°F) per NOAA NCEI 1991-2020 normals; precipitation in Rocky River runs about 42.1 inches on roughly 225 measurable days.
Rocky River's precipitation spreads evenly: May peaks at 4.2 inches on 17.7 wet days, while February holds 2.9 inches over 20.1 — no month dominates Rocky River's rain calendar. That even rhythm groups Rocky River with places like Fairview Park, OH, Lakewood, OH and Westlake, OH.
Once Rocky River passes mid-April, overnight freezes fade and kale, peas, spinach, and parsnips can be sown. Rocky River's heat-lovers — tomatoes, peppers, squash — hold off until Rocky River's frost risk clears, 10-14 days on. Frost returns to Rocky River near mid-November, ending the tender-crop season. Rocky River's low ground holds frost later into spring than Rocky River's benches, which run 3-5 days ahead.
Similar climates: Fairview Park, OH, Lakewood, OH, Westlake, OH, Bay Village, OH, Linndale, OH.
Frequently asked
- When does it freeze in Rocky River?
- Frost typically leaves Rocky River by mid-April and returns to Rocky River near mid-November.
- What is the rainy season in Rocky River?
- Rocky River sees its heaviest rain in May (around 4.2 inches), part of roughly 42 inches a year.
- What is the warmest month in Rocky River?
- On average July tops the year in Rocky River at about 74°F.
- What is the coldest month in Rocky River?
- The coldest stretch in Rocky River falls in January, around 25°F on average.
- When can I start a vegetable garden in Rocky River?
- Around mid-April, start frost-hardy crops in Rocky River; tomatoes and basil belong a fortnight later.
- How many rainy days does Rocky River get?
- Rocky River records around 225 days of measurable precipitation annually.
- What hardiness zone is Rocky River?
- With January around 25°F, Rocky River's zone reflects that minimum — the USDA ZIP map confirms Rocky River's band.
- What is the 10-day forecast for Rocky River?
- Rocky River'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 Rocky River?
- See this week's day-by-day rain chances for Rocky River in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Rocky River?
- Current conditions for Rocky River and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Rocky River forecast updated?
- The Rocky River forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Rocky River?
- Today's sunrise and sunset times for Rocky River 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 Rocky River?
- The next few days in Rocky River's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Climate
The warm-summer humid continental climate of Rocky River, Ohio carries typical Januarys near 25°F and Julys around 74°F — 49°F of seasonal travel.
Yearly precipitation in Rocky River totals around 42 inches, spread over about 225 days of rain or snow.
From 41.5°N, Rocky River sees a 49°F seasonal swing that governs Rocky River's planting and frost windows.
ZIP codes in Rocky River
- 44116