Miamisburg, Ohio Weather
Sun climbs to its northern throne. Day 88 of spring. Read this microseason across nine climate regions →
Miamisburg weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 15Overcast——70°54°—
- TuesdayJun 16Overcast38%—77°56°+7°
- WednesdayJun 17Thunderstorm51%—81°57°+4°
- ThursdayJun 18Thunderstorm86%0.11″78°63°-3°
- FridayJun 19Light Drizzle18%—74°59°-4°
- SaturdayJun 20Overcast——72°51°-2°
- SundayJun 21Overcast38%—80°56°+8°
AQI 35 (Good), driven by Ozone. AQI up 10 over the last 6 hours (gradual rise). Ozone at AQI 43 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
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 43 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 43
- UV peak
- 1.9 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 43
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
- 6:10 AM
- Moonset
- 9:21 PM
- In sign
- ♋︎ Cancer
Sun climbs to its northern throne
Miamisburg at a glance
- Today vs. normal: 5°F below the seasonal normal for this latitude
- Last frost: April 14 (climatological average for this latitude)
- Microseason: Jun 11–15
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
16-Day Forecast — Miamisburg
- Mon70°54°0%
- Tue77°56°38%
- Wed81°57°51%
- Thu78°63°86%
- Fri74°59°18%
- Sat72°51°7%
- Sun80°56°38%
- Mon78°65°48%
- Tue77°62°29%
- Wed80°64°11%
- Thu81°66°17%
- Fri77°61°33%
- Sat76°58°32%
- Sun87°65°26%
- Mon75°68°32%
- Tue77°62°35%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of June 15, 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 — Miamisburg
SPC has placed Miamisburg in the Slight Risk category for severe thunderstorms day after tomorrow.
- TODAYNONENo severe risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3SLGTSlight Risk
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.
Microseason · June 11–15
Sun climbs to its northern throne
Days lengthen toward solstice; longest light lingers until after 8 PM, heat building steadily.
Day 166 of 365 · Wedge 33 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 Miamisburg's warmest stretch (~75°F) and January its coldest (~27°F); precipitation crests in May at 4.4 inches and ebbs in September to 2.5 inches.
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 27° | 2.8″ | 16 |
| February | 30° | 2.9″ | 15 |
| March | 40° | 4.0″ | 17 |
| April | 52° | 4.1″ | 18 |
| May | 61° | 4.4″ | 18 |
| June | 70° | 3.8″ | 17 |
| July | 75° | 3.4″ | 16 |
| August | 74° | 3.1″ | 16 |
| September | 68° | 2.5″ | 13 |
| October | 56° | 2.6″ | 12 |
| November | 42° | 3.0″ | 14 |
| December | 31° | 3.7″ | 16 |
Regional context
In Miamisburg, NOAA NCEI 1991-2020 normals put January near 27°F and July near 75°F — a 48°F seasonal arc — with about 40.2 inches of precipitation over 186 rainy or snowy days.
Rainfall in Miamisburg stays even across the calendar: May tops out at 4.4 inches over 17.7 rainy days, and September still logs 2.5 inches across 12.6 — a narrow range for Miamisburg. It is a balanced pattern Miamisburg shares with places like West Carrollton, OH, Carlisle, OH and Moraine, OH.
Once Miamisburg passes mid-April, overnight freezes fade and kale, peas, spinach, and parsnips can be sown. Miamisburg's heat-lovers — tomatoes, peppers, squash — hold off until Miamisburg's frost risk clears, 10-14 days on. By mid-November, frost is back in Miamisburg — protect or harvest anything tender. A creek-bottom lot in Miamisburg can lag Miamisburg's last frost 7-10 days behind a south slope.
Similar climates: West Carrollton, OH, Carlisle, OH, Moraine, OH, Germantown, OH, Springboro, OH.
Frequently asked
- When does it freeze in Miamisburg?
- In Miamisburg, expect the last spring frost near mid-April; Miamisburg's first autumn frost comes around mid-November.
- What is the rainy season in Miamisburg?
- Rainfall in Miamisburg peaks in May near 4.4 inches, out of about 40 inches annually.
- What is the warmest month in Miamisburg?
- Miamisburg peaks in July, when the mean runs near 75°F.
- What is the coldest month in Miamisburg?
- January is Miamisburg's coldest month, averaging about 27°F.
- When can I start a vegetable garden in Miamisburg?
- In Miamisburg, sow peas and hardy greens around mid-April; Miamisburg's tomatoes and peppers wait two weeks more.
- How many rainy days does Miamisburg get?
- Miamisburg records around 186 days of measurable precipitation annually.
- What hardiness zone is Miamisburg?
- Since January in Miamisburg averages 27°F, Miamisburg's USDA zone follows that floor — confirm it by ZIP.
- What is the 10-day forecast for Miamisburg?
- Miamisburg'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 Miamisburg?
- See this week's day-by-day rain chances for Miamisburg in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Miamisburg?
- Current conditions for Miamisburg and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Miamisburg forecast updated?
- The Miamisburg forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Miamisburg?
- Day length in Miamisburg peaks around the June solstice — earliest sunrise and latest sunset — and is shortest near the December solstice.
- How accurate is the weather forecast for Miamisburg?
- The next few days in Miamisburg's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Climate
Set in a humid subtropical zone, Miamisburg, Ohio swings from 27°F in the heart of winter to 75°F at midsummer — a 48°F arc.
In a typical year Miamisburg records about 40 inches of precipitation on around 186 days.
Miamisburg's 48°F range, set by its 39.6°N position, drives frost timing and what thrives in Miamisburg.
ZIP codes in Miamisburg
- 45342
- 45343