Harman US

Spencerville, OH Weather & Growing Conditions

Tonight
62°F
Mostly Cloudy then Rain Showers Likely
Rain showers likely after 2am. Mostly cloudy, with a low around 62. South wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.

7-day forecast

WhenTempForecastWindPrecip
Tonight 62°F Mostly Cloudy then Rain Showers Likely 15 mph S 57%
Wednesday 70°F Rain Showers 15 to 20 mph S 86%
Wednesday Night 50°F Chance Rain Showers 5 to 15 mph SW 39%
Thursday 62°F Mostly Sunny 5 to 15 mph SW 2%
Thursday Night 45°F Mostly Cloudy 5 mph SW 1%
Friday 56°F Chance Rain Showers 5 mph NW 29%
Friday Night 37°F Chance Rain Showers then Mostly Cloudy 5 to 10 mph NW 15%
Saturday 53°F Slight Chance Rain Showers 5 to 10 mph NW 16%
Saturday Night 33°F Partly Cloudy 0 to 5 mph W 6%
Sunday 55°F Mostly Sunny then Slight Chance Rain Showers 0 to 10 mph W 16%
Sunday Night 33°F Slight Chance Rain Showers then Partly Cloudy 5 to 10 mph W 16%
Monday 59°F Mostly Sunny 5 to 10 mph W 14%
Monday Night 38°F Mostly Clear 10 mph SW 13%
Tuesday 62°F Mostly Sunny 10 mph W 3%

Forecast source: National Weather Service (api.weather.gov). Updated through the day.

Growing snapshot for Spencerville, OH

Last spring frost
Apr 24
First fall frost
Oct 24
Growing season
182 days
Hardiness zone
6a

Explore more for Spencerville, OH: full frost dates · planting calendar · Ohio frost dates

Climate data from the nearest NOAA station, Lima Wwtp, Oh (12.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.