Vermilion, Ohio Weather
Fireflies rise from the lawn. Day 78 of spring. Read this microseason across nine climate regions →
Vermilion weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 5Overcast——87°64°—
- SaturdayJun 6Drizzle77%0.02″84°67°-3°
- SundayJun 7Drizzle45%—71°62°-13°
- MondayJun 8Drizzle——80°57°+9°
- TuesdayJun 9Drizzle44%0.03″76°68°-4°
- WednesdayJun 10Light Drizzle35%0.02″74°69°-2°
- ThursdayJun 11Light Drizzle34%—80°69°+6°
AQI 70 (Moderate), driven by Ozone. AQI up 13 over the last 6 hours (gradual rise). Ozone at AQI 58 now. With UV 3.3 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 26 by mid-afternoon.
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 58 now. With UV 3.3 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 26 by mid-afternoon.
- Present
- AQI 58
- UV peak
- 3.3 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 26
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).
The higher the clouds, the finer the weather.
- Moonrise
- 4:33 AM
- Moonset
- 2:31 PM
- In sign
- ♒︎ Aquarius
Fireflies rise from the lawn
Vermilion at a glance
- Today vs. normal: 7°F below the seasonal normal for this latitude
- Last frost: April 24 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Peak growing season
As of June 5, 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 — Vermilion
SPC has placed Vermilion 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.
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
Vermilion's warmest month is July (~72°F mean) and its coldest is January (~27°F). Rainfall peaks in June (3.9 inches) and bottoms out in February (1.7 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 27° | 2.1″ | 5 |
| February | 29° | 1.7″ | 4 |
| March | 37° | 2.5″ | 6 |
| April | 49° | 3.3″ | 7 |
| May | 60° | 3.6″ | 8 |
| June | 69° | 3.9″ | 7 |
| July | 72° | 3.6″ | 7 |
| August | 70° | 3.6″ | 6 |
| September | 64° | 3.7″ | 6 |
| October | 53° | 3.5″ | 7 |
| November | 42° | 3.0″ | 7 |
| December | 32° | 2.3″ | 6 |
Regional context
Vermilion sits within a warm-summer humid continental climate region — a cohort that shares similar temperature ranges, seasonal patterns, and growing conditions across nearby cities.
Similar climates: Cleveland, OH, Akron, OH, Toledo, OH, Youngstown, OH, Canton, OH.
Frequently asked
- When does it freeze in Vermilion?
- Vermilion's last spring frost typically falls around mid-April, and the first fall frost arrives around mid-November.
- What is the rainy season in Vermilion?
- June is the wettest month with about 3.9 inches of rain on average; the city receives roughly 37 inches annually.
- What is the warmest month in Vermilion?
- July is typically warmest, averaging about 72°F.
- What is the coldest month in Vermilion?
- January is typically coldest, averaging about 27°F.
- When can I start a vegetable garden in Vermilion?
- Cool-season crops (peas, lettuce) can be sown around the last spring frost (mid-April); warm-season crops (tomatoes, peppers) wait until 1–2 weeks after.
- How many rainy days does Vermilion get?
- Vermilion averages about 77 rainy days per year.
- What hardiness zone is Vermilion?
- Vermilion's USDA hardiness zone is determined by its lowest average winter temperature; check the USDA's online lookup with the city ZIP for the current zone designation.
Climate
Vermilion, Ohio sits in a warm-summer humid continental climate zone. January means hover near 27°F while July averages 72°F — a 46°F seasonal swing.
Across the year, Vermilion receives about 37 inches of precipitation spread over roughly 77 rainy days.
The rhythm of the year is set by latitude (41.4°N), proximity to large water bodies, and elevation — all of which shape what grows here, when frost is likely, and what the weather story looks like day to day.