Griffith, IN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Griffith, a town in Lake County, Indiana.
Overnight
62°F
Mostly Clear
Mostly clear, with a low around 62. South wind around 5 mph.
7-day forecast for Griffith
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 62°F | Mostly Clear | 5 mph S | 0% |
| Tuesday | 84°F | Mostly Sunny | 5 mph S | 0% |
| Tuesday Night | 65°F | Partly Cloudy | 5 mph SSW | 2% |
| Wednesday | 81°F | Chance Rain Showers then Slight Chance Showers And Thunderstorms | 5 mph SW | 40% |
| Wednesday Night | 65°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 0 to 5 mph WSW | 88% |
| Thursday | 78°F | Rain Showers then Chance Showers And Thunderstorms | 0 to 5 mph SW | 88% |
| Thursday Night | 63°F | Chance Showers And Thunderstorms | 0 to 5 mph ESE | 50% |
| Friday | 81°F | Mostly Sunny | 0 to 5 mph SW | 6% |
| Friday Night | 64°F | Partly Cloudy | 0 to 5 mph S | 8% |
| Saturday | 84°F | Mostly Sunny | 0 to 5 mph SSW | 8% |
| Saturday Night | 68°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 5 mph SSW | 16% |
| Sunday | 86°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 5 to 10 mph SW | 16% |
| Sunday Night | 70°F | Chance Showers And Thunderstorms | 5 to 10 mph SW | 40% |
| Monday | 85°F | Chance Rain Showers | 5 to 10 mph SW | 40% |
Forecast source: National Weather Service (api.weather.gov) for Griffith (41.528, -87.424). Updated through the day.
Growing snapshot for Griffith
Last spring frost
Apr 23
First fall frost
Oct 20
Growing season
179 days
Hardiness zone
6a
More local growing data for Griffith: nearby ZIP 46319 weather · frost dates · planting calendar · Indiana frost dates
Nearby towns & communities
Cedar Lake
Crown Point
Dyer
East Chicago
Gary
Hammond
Highland
Hobart
Lake Dalecarlia
Lake Station
Leroy
Lowell
Merrillville
Munster
New Chicago
Ross
Schererville
Schneider
Shelby
St. John
Whiting
Winfield
Climate data from the nearest NOAA station, Park Forest, Il (13.5 mi from Griffith). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.