Mammoth Spring, AR Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mammoth Spring, a city in Fulton County, Arkansas.
Today
91°F
Sunny
Sunny. High near 91, with temperatures falling to around 89 in the afternoon. Heat index values as high as 93. Southeast wind around 2 mph.
7-day forecast for Mammoth Spring
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 91°F | Sunny | 2 mph SE | 0% |
| Tonight | 67°F | Mostly Clear | 0 to 3 mph SE | 0% |
| Wednesday | 93°F | Sunny | 0 to 5 mph SE | 1% |
| Wednesday Night | 71°F | Partly Cloudy | 3 mph SE | 10% |
| Thursday | 93°F | Chance Showers And Thunderstorms | 1 to 5 mph S | 30% |
| Thursday Night | 71°F | Chance Showers And Thunderstorms | 3 mph S | 44% |
| Friday | 91°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 3 mph S | 67% |
| Friday Night | 70°F | Chance Showers And Thunderstorms | 2 mph SW | 43% |
| Saturday | 92°F | Chance Showers And Thunderstorms | 0 to 3 mph SW | 30% |
| Saturday Night | 70°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 3 mph S | 21% |
| Sunday | 93°F | Sunny | 1 to 5 mph S | 3% |
| Sunday Night | 71°F | Mostly Clear | 5 mph S | 3% |
| Monday | 94°F | Sunny | 1 to 6 mph S | 4% |
| Monday Night | 72°F | Mostly Clear | 2 to 6 mph S | 4% |
Forecast source: National Weather Service (api.weather.gov) for Mammoth Spring (36.492, -91.541). Updated through the day.
Growing snapshot for Mammoth Spring
Last spring frost
Apr 12
First fall frost
Oct 24
Growing season
194 days
Hardiness zone
7a
More local growing data for Mammoth Spring: nearby ZIP 72554 weather · frost dates · planting calendar · Arkansas frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Mammoth Spring, Ar (3.7 mi from Mammoth Spring). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.