Horn Lake, MS Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Horn Lake, a city in Desoto County, Mississippi.
Today
100°F
Sunny
Sunny, with a high near 100. Heat index values as high as 101. West wind 0 to 5 mph.
7-day forecast for Horn Lake
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 100°F | Sunny | 0 to 5 mph W | 1% |
| Tonight | 74°F | Mostly Clear | 5 mph SSW | 1% |
| Sunday | 99°F | Mostly Sunny | 0 to 5 mph WSW | 1% |
| Sunday Night | 74°F | Partly Cloudy | 5 mph SSW | 0% |
| Monday | 97°F | Mostly Sunny | 5 to 10 mph W | 9% |
| Monday Night | 71°F | Chance Showers And Thunderstorms | 5 mph N | 34% |
| Tuesday | 90°F | Mostly Sunny | 5 to 15 mph N | 9% |
| Tuesday Night | 65°F | Partly Cloudy | 10 to 15 mph NNE | 9% |
| Wednesday | 85°F | Sunny | 10 mph NNE | 4% |
| Wednesday Night | 63°F | Mostly Clear | 5 to 10 mph NNE | 1% |
| Thursday | 85°F | Sunny | 5 to 10 mph NNE | 0% |
| Thursday Night | 63°F | Partly Cloudy | 5 to 10 mph NE | 0% |
| Friday | 85°F | Mostly Sunny | 5 to 10 mph NE | 3% |
| Friday Night | 63°F | Partly Cloudy | 5 to 10 mph NE | 3% |
Forecast source: National Weather Service (api.weather.gov) for Horn Lake (34.952, -90.049). Updated through the day.
Growing snapshot for Horn Lake
Last spring frost
Mar 16
First fall frost
Nov 16
Growing season
244 days
Hardiness zone
8a
More local growing data for Horn Lake: nearby ZIP 38637 weather · frost dates · planting calendar · Mississippi frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Memphis Intl Ap, Tn (8.1 mi from Horn Lake). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.