Altha, FL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Altha, a town in Calhoun County, Florida.
This Afternoon
93°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 4pm. Sunny. High near 93, with temperatures falling to around 90 in the afternoon. Northeast wind around 5 mph. Chance of precipitation is 20%.
7-day forecast for Altha
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 93°F | Slight Chance Showers And Thunderstorms | 5 mph NE | 19% |
| Tonight | 72°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SSW | 25% |
| Sunday | 91°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph NE | 51% |
| Sunday Night | 72°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 47% |
| Monday | 91°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph ENE | 45% |
| Monday Night | 71°F | Chance Showers And Thunderstorms | 0 mph | 45% |
| Tuesday | 91°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph NE | 16% |
| Tuesday Night | 72°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph E | 16% |
| Wednesday | 90°F | Sunny | 5 to 10 mph NE | 12% |
| Wednesday Night | 71°F | Mostly Clear | 5 to 10 mph NE | 12% |
| Thursday | 88°F | Sunny | 10 mph NE | 8% |
| Thursday Night | 68°F | Mostly Clear | 5 to 10 mph NE | 8% |
| Friday | 86°F | Sunny | 5 to 10 mph NNE | 10% |
| Friday Night | 67°F | Mostly Clear | 5 mph NE | 10% |
Forecast source: National Weather Service (api.weather.gov) for Altha (30.573, -85.126). Updated through the day.
Growing snapshot for Altha
Last spring frost
Mar 1
First fall frost
Nov 27
Growing season
270 days
Hardiness zone
9a
More local growing data for Altha: nearby ZIP 32421 weather · frost dates · planting calendar · Florida frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Marianna Muni Ap, Fl (21.7 mi from Altha). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.