Merritt Island, FL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Merritt Island, a community in Brevard County, Florida.
Today
90°F
Partly Sunny then Showers And Thunderstorms Likely
Showers and thunderstorms likely between 1pm and 5pm, then showers and thunderstorms. Partly sunny. High near 90, with temperatures falling to around 83 in the afternoon. South wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
7-day forecast for Merritt Island
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 90°F | Partly Sunny then Showers And Thunderstorms Likely | 5 to 10 mph S | 79% |
| Tonight | 77°F | Showers And Thunderstorms Likely then Mostly Cloudy | 0 to 5 mph S | 68% |
| Wednesday | 89°F | Partly Sunny then Chance Showers And Thunderstorms | 0 to 10 mph SSE | 40% |
| Wednesday Night | 78°F | Chance Showers And Thunderstorms | 5 to 10 mph ESE | 38% |
| Thursday | 89°F | Chance Showers And Thunderstorms | 5 to 15 mph E | 44% |
| Thursday Night | 79°F | Chance Showers And Thunderstorms | 5 to 10 mph E | 44% |
| Friday | 89°F | Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 10 to 15 mph E | 62% |
| Friday Night | 78°F | Chance Showers And Thunderstorms then Partly Cloudy | 5 to 15 mph ESE | 37% |
| Saturday | 90°F | Chance Showers And Thunderstorms | 5 to 15 mph SE | 53% |
| Saturday Night | 78°F | Chance Showers And Thunderstorms then Partly Cloudy | 5 to 10 mph SE | 53% |
| Sunday | 91°F | Sunny then Chance Showers And Thunderstorms | 5 to 10 mph SE | 29% |
| Sunday Night | 78°F | Chance Showers And Thunderstorms then Mostly Clear | 0 to 10 mph SE | 29% |
| Monday | 91°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 10 mph ESE | 24% |
| Monday Night | 78°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 0 to 10 mph SE | 24% |
Forecast source: National Weather Service (api.weather.gov) for Merritt Island (28.309, -80.676). Updated through the day.
Growing snapshot for Merritt Island
Last spring frost
Jan 24
First fall frost
Jan 9
Growing season
359 days
Hardiness zone
10a
More local growing data for Merritt Island: nearby ZIP 32952 weather · frost dates · planting calendar · Florida frost dates
Nearby towns & communities
Cape Canaveral
Cocoa
Cocoa Beach
Cocoa West
Grant-Valkaria
Indialantic
Indian Harbour Beach
June Park
Malabar
Melbourne
Melbourne Beach
Melbourne Village
Micco
Mims
North Merritt Island
Palm Bay
Palm Shores
Patrick AFB
Port St. John
Rockledge
Satellite Beach
Scottsmoor
Sharpes
South Patrick Shores
Titusville
Tropical Park
Viera East
Viera West
West Canaveral Groves
West Melbourne
Climate data from the nearest NOAA station, Melbourne Wfo, Fl (14.3 mi from Merritt Island). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.