Merritt Island, FL Weather & Growing Conditions
Today
85°F
Partly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms between 1pm and 3pm, then showers and thunderstorms likely between 3pm and 4pm, then showers and thunderstorms likely between 4pm and 5pm, then showers and thunderstorms. Partly sunny. High near 85, with temperatures falling to around 80 in the afternoon. South wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Partly Sunny then Chance Showers And Thunderstorms | 5 to 10 mph S | 79% |
| Tonight | 78°F | Showers And Thunderstorms Likely then Mostly Cloudy | 5 to 10 mph S | 69% |
| Wednesday | 84°F | Mostly Cloudy then Chance Showers And Thunderstorms | 0 to 10 mph SSE | 38% |
| Wednesday Night | 80°F | Chance Showers And Thunderstorms | 5 to 10 mph ESE | 36% |
| Thursday | 85°F | Chance Showers And Thunderstorms | 5 to 15 mph E | 43% |
| Thursday Night | 81°F | Chance Showers And Thunderstorms | 10 to 15 mph E | 43% |
| Friday | 84°F | Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 15 mph E | 62% |
| Friday Night | 79°F | Chance Showers And Thunderstorms then Partly Cloudy | 5 to 15 mph ESE | 36% |
| Saturday | 87°F | Chance Showers And Thunderstorms | 5 to 15 mph SE | 50% |
| Saturday Night | 79°F | Chance Showers And Thunderstorms then Partly Cloudy | 5 to 10 mph SE | 50% |
| Sunday | 88°F | Sunny then Chance Showers And Thunderstorms | 5 to 10 mph SE | 26% |
| Sunday Night | 79°F | Chance Showers And Thunderstorms then Mostly Clear | 5 to 10 mph SE | 26% |
| Monday | 88°F | Sunny then Slight Chance Showers And Thunderstorms | 5 to 10 mph SE | 21% |
| Monday Night | 79°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 5 to 10 mph SE | 21% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Merritt Island, FL
Last spring frost
Jan 24
First fall frost
Jan 9
Growing season
359 days
Hardiness zone
10a
Explore more for Merritt Island, FL: full frost dates · planting calendar · Florida frost dates
Climate data from the nearest NOAA station, Melbourne Wfo, Fl (14.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.