Pioneer, Ohio Weather
Day 93 of summer. Read today’s microseason across nine climate regions →
Pioneer weather forecast — hour by hour, 7-day outlook, NOAA radar
Conditions updated 10:21 AM EDT · Open-Meteo
- TodaySep 21Light Drizzle later20%0.01″62°56°—
- TuesdaySep 22Overcast——60°52°-2°
- WednesdaySep 23Heavy Drizzle27%0.14″59°55°-1°
- ThursdaySep 24Overcast——68°50°+9°
- FridaySep 25Overcast——68°49°0°
- SaturdaySep 26Overcast——67°50°-1°
- SundaySep 27Light Drizzle—0.05″65°54°-2°
Air quality now AQI 28 · Good
AQI 28 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 5.8 µg/m³, PM10 at 5.9 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 5.8 µg/m³, PM10 at 5.9 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.98
- Wind
- breezy
- 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
- 5:15 PM
- Moonset
- 1:53 AM
- In sign
- ♑︎ Capricorn
Pioneer at a glance
- Today vs. normal: Today averages 59°F (high 62°F, low 56°F), 2°F below the 61°F normal for Sep 21
- Last frost: April 28 (1991–2020 median, NOAA station 12 km away)
- Microseason: Sep 21–25
- Planting calendar: September — plant garlic (overwinter); harvest tomatoes, peppers, beans, summer squash, winter squash
16-Day Forecast — Pioneer
- Mon62°56°20%
- Tue60°52°8%
- Wed59°55°27%
- Thu68°50°2%
- Fri68°49°1%
- Sat67°50°0%
- Sun65°54°3%
- Mon72°57°6%
- Tue80°57°19%
- Wed73°57°25%
- Thu65°54°16%
- Fri56°46°15%
- Sat80°53°26%
- Sun68°50°18%
- Mon57°41°20%
- Tue55°36°16%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Fall planting + final harvests
As of September 21, the season's first frost (typically October 18) 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.
Sun & seasons in Pioneer
Pioneer sits in Williams County, where the year’s longest day runs 15h 12m of daylight and its shortest just 9h 9m — a swing of +6h 3m 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 175 miles to the S. The nearest town Pioneer tracks is Liberty Center, roughly 32 miles to the ESE.
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| April | lettuce, peas, spinach, 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, beans, summer squash, garlic |
| August | beans, squash, fall brassicas, carrots | tomatoes, peppers, beans, summer squash, garlic |
| 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
July is Pioneer's warmest stretch (~73°F) and January its coldest (~24°F); precipitation crests in May at 4.3 inches and ebbs in February to 2.2 inches.
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 24° | 2.4″ | 11 |
| February | 27° | 2.2″ | 9 |
| March | 36° | 2.6″ | 10 |
| April | 48° | 3.6″ | 12 |
| May | 59° | 4.3″ | 13 |
| June | 69° | 3.8″ | 10 |
| July | 73° | 3.5″ | 9 |
| August | 71° | 4.1″ | 10 |
| September | 64° | 3.1″ | 9 |
| October | 52° | 2.8″ | 10 |
| November | 39° | 3.1″ | 11 |
| December | 30° | 2.4″ | 10 |
Regional context
Similar climates Kunkle, OH, Holiday City, OH, Lake Seneca, OH
In Pioneer, NOAA NCEI 1991-2020 normals put January near 24°F and July near 73°F — a 49°F seasonal arc — with about 37.9 inches of precipitation over 122 rainy or snowy days.
Pioneer's rain peaks in summer: May brings 4.3 inches over 12.5 thunderstorm-fed days, while February sees just 2.2 inches across 8.9 days under cooler, drier air. Pioneer shares that warm-season-wet pattern with places like Kunkle, OH, Holiday City, OH and Lake Seneca, OH.
Once Pioneer passes April 28, freezes fade and Pioneer's beds take kale, peas, spinach, and parsnips. Heat-demanding starts go out a fortnight on in Pioneer, after the soil warms and cold snaps clear. By October 18, frost is back in Pioneer — protect or harvest anything tender. That date is a median: Pioneer freezes sooner in half of years.
Similar climates: Kunkle, OH, Holiday City, OH, Lake Seneca, OH, Alvordton, OH, Montpelier, OH.
Frequently asked
- When does it freeze in Pioneer?
- In Pioneer, expect the last spring frost near April 28; Pioneer's first autumn frost comes around October 18.
- What is the rainy season in Pioneer?
- Rainfall in Pioneer peaks in May near 4.3 inches, out of about 38 inches annually.
- What is the warmest month in Pioneer?
- On average July tops the year in Pioneer at about 73°F.
- What is the coldest month in Pioneer?
- The coldest stretch in Pioneer falls in January, around 24°F on average.
- When can I start a vegetable garden in Pioneer?
- Around April 28, start frost-hardy crops in Pioneer; tomatoes and basil belong a fortnight later.
- How many rainy days does Pioneer get?
- Pioneer records around 122 days of measurable precipitation annually.
- What hardiness zone is Pioneer?
- Since January in Pioneer averages 24°F, Pioneer's USDA zone follows that floor — confirm it by ZIP.
- What is the 10-day forecast for Pioneer?
- Pioneer'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 Pioneer?
- See this week's day-by-day rain chances for Pioneer in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Pioneer?
- Current conditions for Pioneer and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Pioneer forecast updated?
- The Pioneer forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Pioneer?
- Today's sunrise and sunset times for Pioneer 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 Pioneer?
- The next few days in Pioneer's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Pioneer sits at 41.7°N; its climate zone is warm-summer humid continental (Köppen approximation).
ZIP codes in Pioneer
- 43554