Knox, IN Weather & Growing Conditions
This Afternoon
67°F
Partly Sunny
Partly sunny. High near 67, with temperatures falling to around 59 in the afternoon. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 67°F | Partly Sunny | 10 to 15 mph SW | 10% |
| Tonight | 47°F | Mostly Cloudy | 10 mph SW | 13% |
| Thursday | 56°F | Mostly Cloudy then Chance Rain Showers | 10 to 15 mph SW | 32% |
| Thursday Night | 40°F | Rain Showers Likely | 5 to 10 mph NW | 70% |
| Friday | 50°F | Chance Rain Showers | 10 to 15 mph NW | 47% |
| Friday Night | 34°F | Mostly Cloudy | 5 to 10 mph NW | 12% |
| Saturday | 51°F | Mostly Sunny | 5 to 10 mph NW | 3% |
| Saturday Night | 30°F | Mostly Clear | 0 to 5 mph W | 0% |
| Sunday | 56°F | Sunny | 5 to 10 mph W | 1% |
| Sunday Night | 32°F | Mostly Clear | 5 mph W | 0% |
| Monday | 60°F | Sunny | 5 to 10 mph SW | 0% |
| Monday Night | 37°F | Mostly Clear | 5 mph SW | 0% |
| Tuesday | 61°F | Sunny | 5 mph W | 0% |
| Tuesday Night | 35°F | Partly Cloudy | 0 to 5 mph NW | 2% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Knox, IN
Last spring frost
Apr 26
First fall frost
Oct 19
Growing season
174 days
Hardiness zone
5b
Explore more for Knox, IN: full frost dates · planting calendar · Indiana frost dates
Climate data from the nearest NOAA station, Knox Wwtp, In (1.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.