Middletown, Ohio Weather
Thunder quiets the land. Day 93 of summer. Read this microseason across nine climate regions →
Middletown weather forecast — hour by hour, 7-day outlook, NOAA radar
Conditions updated 1:50 AM EDT · Open-Meteo
- TodaySep 21Light Rain later51%0.11″70°60°—
- TuesdaySep 22Overcast——63°60°-7°
- WednesdaySep 23Light Drizzle12%0.01″64°59°+1°
- ThursdaySep 24Overcast——70°56°+6°
- FridaySep 25Overcast——68°48°-2°
- SaturdaySep 26Overcast——69°46°+1°
- SundaySep 27Overcast——71°49°+2°
Air quality now AQI 47 · Good
AQI 47 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 4.7 µg/m³, PM10 at 4.7 µg/m³ — typical background levels with no transport signature.
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 4.7 µg/m³, PM10 at 4.7 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 1.00
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- background
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
- 5:08 PM
- Moonset
- 2:00 AM
- In sign
- ♑︎ Capricorn
Thunder quiets the land
Read this microseason across nine climate regions →
All 72 microseasons on the year wheel →
Middletown at a glance
- Today vs. normal: Today averages 65°F (high 70°F, low 60°F), about the 64°F normal for Sep 21
- Last frost: April 24 (1991–2020 median, NOAA station 7 km away)
- Microseason: Sep 21–25
- Planting calendar: September — plant garlic (overwinter); harvest tomatoes, peppers, beans, summer squash, winter squash
15-Day Forecast — Middletown
- Mon70°60°51%
- Tue63°60°4%
- Wed64°59°12%
- Thu70°56°3%
- Fri68°48°1%
- Sat69°46°1%
- Sun71°49°2%
- Mon74°48°5%
- Tue77°56°20%
- Wed73°55°21%
- Thu69°49°12%
- Fri70°51°13%
- Sat76°53°16%
- Sun76°56°19%
- Mon86°64°16%
Forecast data from Open-Meteo (CC BY 4.0).
Live wind & temperature near Middletown
Interactive wind and temperature map centered on Middletown — 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 19) 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 — Middletown
SPC includes Middletown in the general thunderstorm area tomorrow — no severe risk, but storms are possible.
- TODAYNONENo severe risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3NONENo severe risk
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook.
Sun & seasons in Middletown
Middletown sits in Butler County, where the year’s longest day runs 14h 58m of daylight and its shortest just 9h 23m — a swing of +5h 35m between the June and December solstices. Clocks spring forward on Sunday, March 8, 2026 and fall back on Sunday, November 1, 2026.
Cincinnati, the state’s largest city, lies about 26 miles to the SSW. The nearest town Middletown tracks is Dayton, roughly 21 miles to the NNE.
Air quality in Middletown
Air quality in Middletown’s county has trended dirtier since 2020; its cleanest year on record was 2020 (median AQI 41).
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| April | lettuce, peas, spinach, radishes | radishes |
| May | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | lettuce, spinach, radishes |
| June | tomatoes, peppers, beans, squash | lettuce, peas, spinach, radishes |
| July | tomatoes, peppers, beans, squash | lettuce, peas, spinach, 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 | — | tomatoes, peppers, beans, summer squash, winter squash, fall brassicas, carrots |
| November | — | fall brassicas, carrots |
A year in weather
The year in Middletown tops out in July (~75°F) and dips lowest in January (~29°F), with April wettest at 4.6 inches and February driest at 2.5 inches.
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 29° | 3.3″ | 9 |
| February | 32° | 2.5″ | 9 |
| March | 41° | 3.5″ | 11 |
| April | 52° | 4.6″ | 11 |
| May | 62° | 4.4″ | 11 |
| June | 71° | 4.5″ | 10 |
| July | 75° | 4.3″ | 9 |
| August | 73° | 2.9″ | 7 |
| September | 66° | 2.9″ | 7 |
| October | 54° | 3.2″ | 8 |
| November | 43° | 3.0″ | 9 |
| December | 34° | 3.3″ | 9 |
Regional context
Similar climates Monroe, OH, Hunter, OH, Franklin, OH
Middletown's climate, from NOAA NCEI 1991-2020 station normals, pairs 29°F Januarys with 75°F Julys — a 45°F swing. About 42.3 inches of precipitation falls over roughly 109 days a year.
Rainfall in Middletown splits evenly between the seasons: April tops out at 4.6 inches over 11.3 rainy days, and February logs 2.5 inches across 8.5 — neither half of Middletown's year dominates. That even rhythm groups Middletown with places like Monroe, OH, Hunter, OH and Franklin, OH.
The cool-season window in Middletown starts at April 24, when nights stop freezing — think kale, peas, spinach, and parsnips. Warm-soil crops in Middletown wait about two weeks past Middletown's last frost, once the soil warms. It shuts near October 19, when freezes return to Middletown and tender plants need cover. Sheltered Middletown yards can escape a light frost.
Similar climates: Monroe, OH, Hunter, OH, Franklin, OH, Trenton, OH, Carlisle, OH.
Frequently asked
- When does it freeze in Middletown?
- In Middletown, expect the last spring frost near April 24; Middletown's first autumn frost comes around October 19.
- What is the rainy season in Middletown?
- Rainfall in Middletown peaks in April near 4.6 inches, out of about 42 inches annually.
- What is the warmest month in Middletown?
- July is Middletown's warmest month, averaging about 75°F.
- What is the coldest month in Middletown?
- Middletown bottoms out in January, with a mean near 29°F.
- When can I start a vegetable garden in Middletown?
- Frost-hardy sowings begin at April 24 in Middletown; warm-season starts follow two weeks on.
- How many rainy days does Middletown get?
- Middletown averages about 109 days with measurable rain or snow each year.
- What hardiness zone is Middletown?
- Middletown sits in the USDA zone set by January lows near 29°F; the USDA ZIP tool gives the band.
- What is the 10-day forecast for Middletown?
- Middletown'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 Middletown?
- See this week's day-by-day rain chances for Middletown in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Middletown?
- Current conditions for Middletown and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Middletown forecast updated?
- The Middletown forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Middletown?
- Today's sunrise and sunset times for Middletown 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 Middletown?
- The next few days in Middletown's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Middletown sits at 39.5°N; its climate zone is humid subtropical (Köppen approximation).
ZIP codes in Middletown
- 45005
- 45042
- 45044