Lake Seneca, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lake Seneca, a community in Williams County, Ohio.
This Afternoon
74°F
Mostly Sunny
Mostly sunny, with a high near 74. East wind around 5 mph.
7-day forecast for Lake Seneca
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 74°F | Mostly Sunny | 5 mph E | 2% |
| Tonight | 55°F | Mostly Cloudy then Chance Showers And Thunderstorms | 5 mph E | 29% |
| Saturday | 73°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 5 to 10 mph E | 90% |
| Saturday Night | 60°F | Showers And Thunderstorms | 5 mph SE | 86% |
| Sunday | 71°F | Showers And Thunderstorms | 5 to 10 mph N | 82% |
| Sunday Night | 51°F | Chance Showers And Thunderstorms | 10 to 15 mph NE | 50% |
| Monday | 65°F | Chance Rain Showers | 10 to 15 mph NE | 36% |
| Monday Night | 48°F | Slight Chance Rain Showers | 15 mph NE | 24% |
| Tuesday | 64°F | Mostly Cloudy then Slight Chance Rain Showers | 15 mph NE | 17% |
| Tuesday Night | 50°F | Chance Rain Showers | 10 to 15 mph NE | 30% |
| Wednesday | 64°F | Chance Rain Showers | 10 to 15 mph NE | 30% |
| Wednesday Night | 50°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 15 mph NE | 20% |
| Thursday | 67°F | Mostly Cloudy | 10 mph NE | 9% |
| Thursday Night | 50°F | Mostly Cloudy | 5 to 10 mph N | 9% |
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 Sep 18, 2026.