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Merritt Island, FL Weather

Live radar, hourly and 7-day forecast, and National Weather Service alerts for Merritt Island, Brevard County, Florida.

Updated Jul 29, 2026, 3:19 PM local time · Radar refreshes every 5 minutes

☀️
Merritt Island
Clear
89°F
Feels like 98°F
Wind 14 mph
Humidity 67%
Cloud cover 0%
UV index 8
Alerts 1

Active alerts (1)

Heat AdvisoryModerate
Inland Volusia; Northern Lake County; Orange; Seminole; Coastal Volusia; Southern Lake County; Inland Northern Brevard; Mainland Northern Brevard; Northern Brevard Barrier Islands
Until Jul 30, 2026, 12:00 AM
Full details
* WHAT...Heat index values up to 110 expected.

* WHERE...Volusia, Northern Brevard, Lake, Orange, and Seminole
Counties.

* WHEN...From 11 AM this morning to 8 PM EDT this evening.

* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors. Young children and
pets should never be left unattended in vehicles under any
circumstances. Take extra precautions if you work or spend time
outside. When possible reschedule strenuous activities to early
morning or evening.

Know the signs and symptoms of heat exhaustion and heat stroke. Wear
lightweight and loose fitting clothing when possible. To reduce risk
during outdoor work, the Occupational Safety and Health
Administration recommends scheduling frequent rest breaks in shaded
or air conditioned environments. Anyone overcome by heat should be
moved to a cool and shaded location. Heat stroke is an emergency!
Call 9 1 1.

Merritt Island weather radar

Light Heavy

Next 24 hours

Now
☀️
89°F
15%
4 PM
☀️
89°F
12%
5 PM
☀️
87°F
11%
6 PM
☀️
86°F
9%
7 PM
☀️
85°F
8%
8 PM
☀️
81°F
7%
9 PM
☁️
80°F
6%
10 PM
☁️
79°F
6%
11 PM
🌤️
78°F
2%
12 AM
☀️
77°F
1%
1 AM
🌤️
77°F
2%
2 AM
☁️
77°F
3%
3 AM
☁️
77°F
3%
4 AM
☁️
77°F
1%
5 AM
🌤️
77°F
1%
6 AM
☁️
77°F
3%
7 AM
☁️
77°F
7%
8 AM
☁️
78°F
17%
9 AM
☁️
82°F
18%
10 AM
☁️
84°F
16%
11 AM
☁️
84°F
16%
12 PM
🌦️
76°F
18%
1 PM
🌧️
75°F
29%
2 PM
☁️
77°F
37%

7-day forecast

Today
Jul 29
☁️
89°F
77°F
15%
Thu
Jul 30
🌧️
84°F
75°F
37%
Fri
Jul 31
⛈️
92°F
75°F
82%
Sat
Aug 1
⛈️
93°F
75°F
82%
Sun
Aug 2
🌧️
94°F
76°F
58%
Mon
Aug 3
🌦️
91°F
74°F
40%
Tue
Aug 4
🌦️
92°F
71°F
36%

Weather near Merritt Island

2 mi Rockledge, FL4 mi Cocoa, FL19 mi Titusville, FL20 mi Melbourne, FL20 mi West Melbourne, FL23 mi Palm Bay, FL35 mi Alafaya, FL37 mi Saint Cloud, FL
Alerts are relayed from the National Weather Service and may lag the official source. In a life-threatening situation always follow weather.gov and local emergency broadcasts.