Lake Seneca, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lake Seneca, a community in Williams County, Ohio.
Today
84°F
Sunny
Sunny, with a high near 84. South wind 0 to 5 mph.
7-day forecast for Lake Seneca
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Sunny | 0 to 5 mph S | 0% |
| Tonight | 58°F | Mostly Clear | 0 to 5 mph SW | 0% |
| Wednesday | 87°F | Sunny | 0 to 5 mph SW | 0% |
| Wednesday Night | 64°F | Mostly Cloudy then Chance Showers And Thunderstorms | 0 to 5 mph SW | 44% |
| Thursday | 83°F | Showers And Thunderstorms Likely | 0 to 10 mph SW | 73% |
| Thursday Night | 63°F | Showers And Thunderstorms Likely | 0 to 5 mph SW | 73% |
| Friday | 84°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 0 to 5 mph SW | 38% |
| Friday Night | 62°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SW | 38% |
| Saturday | 86°F | Mostly Sunny | 0 to 10 mph SW | 11% |
| Saturday Night | 65°F | Slight Chance Showers And Thunderstorms | 5 mph SW | 24% |
| Sunday | 88°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 5 to 15 mph SW | 24% |
| Sunday Night | 67°F | Chance Showers And Thunderstorms | 10 to 15 mph SW | 40% |
| Monday | 88°F | Chance Rain Showers | 10 mph SW | 40% |
| Monday Night | 66°F | Chance Showers And Thunderstorms | 5 to 10 mph SW | 49% |
Forecast source: National Weather Service (api.weather.gov) for Lake Seneca (41.666, -84.647). Updated through the day.
Growing snapshot for Lake Seneca
Last spring frost
Apr 28
First fall frost
Oct 18
Growing season
173 days
Hardiness zone
6a
More local growing data for Lake Seneca: nearby ZIP 43543 weather · frost dates · planting calendar · Ohio frost dates
Nearby towns & communities
Alvordton
Blakeslee
Bryan
Edgerton
Edon
Holiday City
Kunkle
Montpelier
Nettle Lake
Pioneer
Pulaski
Stryker
West Unity
Climate data from the nearest NOAA station, Montpelier, Oh (1.8 mi from Lake Seneca). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.