Sulphur Springs, IN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Sulphur Springs, a town in Henry County, Indiana.
Today
84°F
Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms between 11am and noon, then a chance of showers and thunderstorms between noon and 2pm, then a chance of showers and thunderstorms between 2pm and 3pm, then showers and thunderstorms likely between 3pm and 5pm, then a chance of showers and thunderstorms. Mostly cloudy. High near 84, with temperatures falling to around 81 in the afternoon. South wind 5 to 8 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Sulphur Springs
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 to 8 mph S | 66% |
| Tonight | 67°F | Chance Showers And Thunderstorms | 6 mph SSE | 38% |
| Sunday | 82°F | Chance Showers And Thunderstorms | 3 to 7 mph WNW | 51% |
| Sunday Night | 57°F | Showers And Thunderstorms Likely | 9 to 13 mph NE | 67% |
| Monday | 68°F | Showers And Thunderstorms Likely | 14 mph NE | 57% |
| Monday Night | 53°F | Chance Rain Showers | 9 to 15 mph NE | 49% |
| Tuesday | 68°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 13 mph NE | 19% |
| Tuesday Night | 54°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 6 to 14 mph NE | 34% |
| Wednesday | 68°F | Slight Chance Rain Showers | 8 mph NNE | 24% |
| Wednesday Night | 54°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 8 mph NNE | 23% |
| Thursday | 69°F | Mostly Cloudy | 8 mph NNE | 7% |
| Thursday Night | 53°F | Mostly Cloudy | 3 to 8 mph NNE | 7% |
| Friday | 71°F | Mostly Sunny | 5 to 9 mph NNE | 6% |
| Friday Night | 51°F | Partly Cloudy | 3 to 8 mph NE | 5% |
Forecast source: National Weather Service (api.weather.gov) for Sulphur Springs (39.997, -85.440). Updated through the day.
Growing snapshot for Sulphur Springs
Last spring frost
Apr 27
First fall frost
Oct 17
Growing season
173 days
Hardiness zone
6a
More local growing data for Sulphur Springs: nearby ZIP 47388 weather · frost dates · planting calendar · Indiana frost dates
Nearby towns & communities
Cadiz
Dunreith
Greensboro
Kennard
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Middletown
Millville
Mooreland
Mount Summit
New Castle
New Lisbon
Shirley
Spiceland
Springport
Straughn
Westwood
Climate data from the nearest NOAA station, New Castle 3 Sw, In (8.1 mi from Sulphur Springs). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.