Thayer, IN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Thayer, a community in Newton County, Indiana.
Overnight
60°F
Patchy Fog
Patchy fog. Mostly clear, with a low around 60. South southeast wind around 0 mph.
7-day forecast for Thayer
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 60°F | Patchy Fog | 0 mph | 0% |
| Tuesday | 84°F | Patchy Fog then Mostly Sunny | 0 to 5 mph S | 0% |
| Tuesday Night | 62°F | Partly Cloudy | 0 to 5 mph S | 0% |
| Wednesday | 83°F | Partly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph SW | 26% |
| Wednesday Night | 64°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 0 to 5 mph SW | 85% |
| Thursday | 80°F | Showers And Thunderstorms | 0 to 5 mph SW | 85% |
| Thursday Night | 61°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 0 to 5 mph SE | 60% |
| Friday | 82°F | Mostly Sunny | 0 mph | 10% |
| Friday Night | 62°F | Partly Cloudy | 0 mph | 11% |
| Saturday | 84°F | Mostly Sunny | 0 to 5 mph SSW | 9% |
| Saturday Night | 67°F | Partly Cloudy | 5 mph SSW | 12% |
| Sunday | 86°F | Mostly Sunny | 5 to 10 mph SW | 12% |
| Sunday Night | 68°F | Chance Showers And Thunderstorms | 5 to 10 mph SSW | 32% |
| Monday | 86°F | Chance Showers And Thunderstorms | 5 to 10 mph SW | 32% |
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 Aug 4, 2026.