Arnold Line, MS Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Arnold Line, a community in Lamar County, Mississippi.
This Afternoon
98°F
Sunny
Sunny, with a high near 98. Heat index values as high as 102. Southeast wind around 0 mph.
7-day forecast for Arnold Line
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 98°F | Sunny | 0 mph | 0% |
| Tonight | 73°F | Mostly Clear | 0 to 5 mph SW | 3% |
| Sunday | 98°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph NNW | 15% |
| Sunday Night | 73°F | Mostly Clear | 0 to 5 mph SSW | 13% |
| Monday | 97°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph N | 22% |
| Monday Night | 72°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 22% |
| Tuesday | 97°F | Sunny | 0 to 5 mph NNE | 14% |
| Tuesday Night | 72°F | Partly Cloudy | 0 to 5 mph ENE | 14% |
| Wednesday | 95°F | Sunny | 0 to 10 mph NNE | 4% |
| Wednesday Night | 70°F | Mostly Clear | 0 to 5 mph NE | 4% |
| Thursday | 93°F | Sunny | 5 to 10 mph NNE | 1% |
| Thursday Night | 67°F | Mostly Clear | 0 to 5 mph NNE | 1% |
| Friday | 91°F | Sunny | 5 to 10 mph NNE | 2% |
| Friday Night | 67°F | Partly Cloudy | 0 to 5 mph NNE | 2% |
Forecast source: National Weather Service (api.weather.gov) for Arnold Line (31.337, -89.377). Updated through the day.
Growing snapshot for Arnold Line
Last spring frost
Mar 7
First fall frost
Nov 23
Growing season
261 days
Hardiness zone
8b
More local growing data for Arnold Line: nearby ZIP 39402 weather · frost dates · planting calendar · Mississippi frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Hattiesburg 5Sw, Ms (7 mi from Arnold Line). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.