Grand Rivers, KY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Grand Rivers, a city in Marshall County, Kentucky.
Today
99°F
Sunny
Sunny. High near 99, with temperatures falling to around 97 in the afternoon. Southwest wind 1 to 5 mph.
7-day forecast for Grand Rivers
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 99°F | Sunny | 1 to 5 mph SW | 2% |
| Tonight | 73°F | Mostly Clear | 2 mph SSW | 1% |
| Sunday | 98°F | Mostly Sunny | 2 to 6 mph WSW | 0% |
| Sunday Night | 72°F | Partly Cloudy | 2 mph N | 5% |
| Monday | 91°F | Partly Sunny then Chance Showers And Thunderstorms | 2 to 6 mph NNE | 35% |
| Monday Night | 64°F | Chance Showers And Thunderstorms | 5 mph NNE | 40% |
| Tuesday | 81°F | Chance Showers And Thunderstorms | 7 mph N | 40% |
| Tuesday Night | 60°F | Partly Cloudy | 3 to 8 mph N | 11% |
| Wednesday | 79°F | Mostly Sunny | 6 mph N | 7% |
| Wednesday Night | 58°F | Partly Cloudy | 5 mph N | 3% |
| Thursday | 79°F | Mostly Sunny | 2 to 6 mph NNE | 3% |
| Thursday Night | 59°F | Partly Cloudy | 5 mph NNE | 3% |
| Friday | 80°F | Mostly Sunny | 6 mph NNE | 3% |
| Friday Night | 59°F | Partly Cloudy | 5 mph NNE | 3% |
Forecast source: National Weather Service (api.weather.gov) for Grand Rivers (37.005, -88.232). Updated through the day.
Growing snapshot for Grand Rivers
Last spring frost
Apr 9
First fall frost
Oct 19
Growing season
192 days
Hardiness zone
7a
More local growing data for Grand Rivers: nearby ZIP 42044 weather · frost dates · planting calendar · Kentucky frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Benton, Ky (8 mi from Grand Rivers). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.