Petroleum, IN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Petroleum, a community in Wells County, Indiana.
Overnight
58°F
Mostly Cloudy
Mostly cloudy, with a low around 58. East wind around 5 mph.
7-day forecast for Petroleum
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 58°F | Mostly Cloudy | 5 mph E | 3% |
| Saturday | 80°F | Showers And Thunderstorms Likely | 5 mph SE | 64% |
| Saturday Night | 66°F | Chance Showers And Thunderstorms | 5 mph S | 55% |
| Sunday | 77°F | Showers And Thunderstorms Likely | 5 to 10 mph NW | 60% |
| Sunday Night | 55°F | Showers And Thunderstorms Likely | 10 to 15 mph NE | 59% |
| Monday | 66°F | Chance Rain Showers | 10 to 15 mph NE | 52% |
| Monday Night | 51°F | Chance Rain Showers | 10 to 15 mph NE | 39% |
| Tuesday | 66°F | Mostly Cloudy then Slight Chance Rain Showers | 10 to 15 mph NE | 17% |
| Tuesday Night | 52°F | Chance Showers And Thunderstorms | 10 to 15 mph NE | 39% |
| Wednesday | 66°F | Chance Rain Showers | 10 mph NE | 39% |
| Wednesday Night | 52°F | Chance Rain Showers then Mostly Cloudy | 5 to 10 mph NE | 25% |
| Thursday | 68°F | Mostly Cloudy | 5 to 10 mph NE | 8% |
| Thursday Night | 52°F | Mostly Cloudy | 5 to 10 mph NE | 7% |
| Friday | 70°F | Mostly Sunny | 5 to 10 mph NE | 6% |
Forecast source: National Weather Service (api.weather.gov) for Petroleum (40.613, -85.153). Updated through the day.
Growing snapshot for Petroleum
Last spring frost
Apr 23
First fall frost
Oct 22
Growing season
181 days
Hardiness zone
6a
More local growing data for Petroleum: nearby ZIP 46778 weather · frost dates · planting calendar · Indiana frost dates
Nearby towns & communities
Bluffton
Craigville
Keystone
Liberty Center
Markle
Ossian
Poneto
Tocsin
Uniondale
Vera Cruz
Zanesville
Climate data from the nearest NOAA station, Berne Wwtp, In (13 mi from Petroleum). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.