Knox, IN Weather & Growing Conditions
Overnight
58°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms. Mostly cloudy. Low around 58, with temperatures rising to around 63 overnight. East wind around 10 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 58°F | Slight Chance Showers And Thunderstorms | 10 mph E | 20% |
| Saturday | 77°F | Showers And Thunderstorms Likely then Showers And Thunderstorms | 5 to 10 mph SE | 88% |
| Saturday Night | 65°F | Showers And Thunderstorms Likely | 5 mph S | 80% |
| Sunday | 73°F | Showers And Thunderstorms Likely | 5 to 10 mph N | 60% |
| Sunday Night | 53°F | Chance Rain Showers | 10 mph NE | 46% |
| Monday | 66°F | Chance Rain Showers | 10 mph NE | 42% |
| Monday Night | 48°F | Slight Chance Rain Showers then Mostly Cloudy | 10 mph NE | 20% |
| Tuesday | 66°F | Mostly Cloudy then Slight Chance Rain Showers | 10 to 15 mph NE | 20% |
| Tuesday Night | 49°F | Slight Chance Rain Showers | 10 mph NE | 20% |
| Wednesday | 67°F | Slight Chance Rain Showers then Mostly Cloudy | 10 mph NE | 16% |
| Wednesday Night | 50°F | Mostly Cloudy | 5 to 10 mph NE | 9% |
| Thursday | 69°F | Partly Sunny | 5 to 10 mph NE | 4% |
| Thursday Night | 50°F | Mostly Cloudy | 5 mph NE | 4% |
| Friday | 72°F | Mostly Sunny | 5 to 10 mph NE | 1% |
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 Sep 19, 2026.