Thayer, IN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Thayer, a community in Newton County, Indiana.
This Afternoon
75°F
Chance Rain Showers
A chance of rain showers. Partly sunny, with a high near 75. East wind around 10 mph. Chance of precipitation is 50%.
7-day forecast for Thayer
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 75°F | Chance Rain Showers | 10 mph E | 49% |
| Tonight | 61°F | Partly Cloudy then Chance Showers And Thunderstorms | 5 to 10 mph ESE | 26% |
| Saturday | 79°F | Showers And Thunderstorms Likely | 5 to 10 mph SE | 77% |
| Saturday Night | 67°F | Showers And Thunderstorms Likely | 5 mph SSW | 75% |
| Sunday | 73°F | Showers And Thunderstorms | 5 to 10 mph N | 75% |
| Sunday Night | 54°F | Showers And Thunderstorms Likely | 10 to 15 mph NE | 67% |
| Monday | 66°F | Showers And Thunderstorms Likely | 10 to 15 mph ENE | 60% |
| Monday Night | 49°F | Chance Rain Showers | 10 to 15 mph NE | 40% |
| Tuesday | 66°F | Slight Chance Rain Showers | 10 mph NE | 21% |
| Tuesday Night | 50°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 10 mph NE | 21% |
| Wednesday | 66°F | Partly Sunny | 5 to 10 mph NNE | 7% |
| Wednesday Night | 51°F | Mostly Cloudy | 5 mph NNE | 7% |
| Thursday | 69°F | Partly Sunny | 5 mph NNE | 3% |
| Thursday Night | 52°F | Partly Cloudy | 0 to 5 mph NNE | 4% |
Forecast source: National Weather Service (api.weather.gov) for Thayer (41.174, -87.330). Updated through the day.
Growing snapshot for Thayer
Last spring frost
Apr 29
First fall frost
Oct 16
Growing season
171 days
Hardiness zone
5b
More local growing data for Thayer: nearby ZIP 46381 weather · frost dates · planting calendar · Indiana frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Lowell, In (7.5 mi from Thayer). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.