Thayer, IN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Thayer, a community in Newton County, Indiana.
This Afternoon
66°F
Slight Chance Rain Showers
A slight chance of rain showers and a slight chance of drizzle. Cloudy. High near 66, with temperatures falling to around 57 in the afternoon. West southwest wind around 15 mph, with gusts as high as 25 mph.
7-day forecast for Thayer
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 66°F | Slight Chance Rain Showers | 15 mph WSW | 1% |
| Tonight | 47°F | Slight Chance Rain Showers then Cloudy | 10 to 15 mph SW | 10% |
| Thursday | 56°F | Mostly Cloudy then Chance Rain | 5 to 15 mph WSW | 38% |
| Thursday Night | 40°F | Rain | 5 to 10 mph NW | 77% |
| Friday | 50°F | Mostly Cloudy | 10 mph NNW | 13% |
| Friday Night | 34°F | Partly Cloudy | 5 mph NW | 4% |
| Saturday | 51°F | Mostly Sunny | 0 to 5 mph NW | 2% |
| Saturday Night | 30°F | Mostly Clear | 0 mph | 0% |
| Sunday | 57°F | Sunny | 0 to 10 mph W | 1% |
| Sunday Night | 33°F | Mostly Clear | 0 to 5 mph W | 0% |
| Monday | 61°F | Sunny | 0 to 5 mph SW | 0% |
| Monday Night | 38°F | Mostly Clear | 5 mph SW | 0% |
| Tuesday | 62°F | Sunny | 0 to 5 mph WNW | 0% |
| Tuesday Night | 36°F | Partly Cloudy | 0 mph | 2% |
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 Nov 4, 2026.