Tiffin, Ohio Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Tiffin weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast26%—90°72°—
- SundayJul 5Heavy Rain59%5.8″78°69°-12°
- MondayJul 6Light Drizzle24%—78°66°0°
- TuesdayJul 7Light Drizzle12%—79°66°+1°
- WednesdayJul 8Light Drizzle——85°63°+6°
- ThursdayJul 9Drizzle38%—81°66°-4°
- FridayJul 10Light Drizzle36%—80°70°-1°
AQI 35 (Good), driven by Ozone. AQI down 12 over the last 6 hours (gradual decline). Ozone at AQI 32. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion during the projected peak around 6 PM.
What's driving it
Ozone × UV × Sky
Ozone at AQI 32. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
- Present
- AQI 32
- UV peak
- 0.3 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 4
PM × Wind × Precip
PM2.5 at 5.3 µg/m³, PM10 at 5.6 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.95
- 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).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:29 PM
- Moonset
- 10:36 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Tiffin at a glance
- Today vs. normal: 3°F above the seasonal normal for this latitude
- Last frost: April 23 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 44883
16-Day Forecast — Tiffin
- Sat90°72°26%
- Sun78°69°59%
- Mon78°66°24%
- Tue79°66°12%
- Wed85°63°8%
- Thu81°66°38%
- Fri80°70°36%
- Sat83°66°27%
- Sun76°61°20%
- Mon63°60°9%
- Tue77°60°15%
- Wed83°64°26%
- Thu85°67°42%
- Fri85°69°46%
- Sat85°67°24%
- Sun86°68°39%
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 — Tiffin
SPC has placed Tiffin 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.
ZIP codes in Tiffin
- 44883