Lamar, AR Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lamar, a city in Johnson County, Arkansas.
This Afternoon
68°F
Sunny
Sunny. High near 68, with temperatures falling to around 64 in the afternoon. West wind 5 to 10 mph, with gusts as high as 20 mph.
7-day forecast for Lamar
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 68°F | Sunny | 5 to 10 mph W | 0% |
| Tonight | 40°F | Mostly Clear then Patchy Fog | 0 to 5 mph N | 0% |
| Thursday | 72°F | Patchy Fog then Sunny | 0 to 5 mph SSW | 1% |
| Thursday Night | 45°F | Partly Cloudy | 0 to 5 mph N | 8% |
| Friday | 67°F | Mostly Sunny | 5 mph N | 0% |
| Friday Night | 37°F | Partly Cloudy | 5 mph NNE | 0% |
| Saturday | 63°F | Mostly Sunny | 0 to 5 mph NNE | 0% |
| Saturday Night | 35°F | Partly Cloudy | 0 mph | 0% |
| Sunday | 65°F | Mostly Sunny | 0 to 5 mph NNW | 0% |
| Sunday Night | 35°F | Mostly Clear | 0 mph | 0% |
| Monday | 68°F | Sunny | 0 mph | 0% |
| Monday Night | 37°F | Mostly Clear | 0 mph | 2% |
| Tuesday | 70°F | Sunny | 0 to 5 mph WNW | 2% |
| Tuesday Night | 39°F | Mostly Clear | 0 mph | 0% |
Forecast source: National Weather Service (api.weather.gov) for Lamar (35.444, -93.395). Updated through the day.
Growing snapshot for Lamar
Last spring frost
Mar 25
First fall frost
Nov 10
Growing season
232 days
Hardiness zone
8a
More local growing data for Lamar: nearby ZIP 72846 weather · frost dates · planting calendar · Arkansas frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Clarksville 6 Ne, Ar (5.5 mi from Lamar). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 5, 2026.