Main Street Bridge, St Johns River, FL Weather Forecast and Current Conditions

Day Sky High / Low Precip Wind Humidity
Mon
Jun 29 		Partly Cloudy
Close Hourly 		-º / 78º 24% SSE 8 mph 72%
6pm Mostly Cloudy 95º 22% ENE 7 mph 48%
7pm Partly Cloudy 92º 20% ESE 6 mph 51%
8pm Mostly Cloudy 89º 15% SE 4 mph 55%
9pm Mostly Cloudy 84º 15% SSE 4 mph 72%
10pm Partly Cloudy 83º 15% S 4 mph 75%
11pm Mostly Cloudy 82º 15% S 3 mph 77%
Tue
Jun 30 		Partly Cloudy
View Hourly 		90º / 77º 20% NE 13 mph 68%
12am Mostly Cloudy 81º 15% SE 3 mph 80%
1am Partly Cloudy 81º 15% SW 2 mph 79%
2am Partly Cloudy 80º 15% SW 2 mph 82%
3am Partly Cloudy 80º 15% SW 2 mph 83%
4am Partly Cloudy 80º 15% E 2 mph 84%
5am Partly Cloudy 79º 20% NE 2 mph 86%
6am Partly Cloudy 79º 24% NE 2 mph 85%
7am Mostly Sunny 79º 20% NE 2 mph 84%
8am Sunny 81º 8% NNE 4 mph 81%
9am Sunny 84º 6% NE 6 mph 76%
10am Mostly Sunny 86º 15% NE 7 mph 70%
11am Partly Cloudy 88º 18% NE 8 mph 66%
12pm Mostly Cloudy 88º 21% NE 10 mph 65%
1pm Mostly Cloudy 89º 18% NE 11 mph 63%
2pm Mostly Cloudy 89º 21% ENE 12 mph 62%
3pm Mostly Cloudy 89º 8% ENE 13 mph 61%
4pm Partly Cloudy 89º 5% ENE 13 mph 60%
5pm Partly Cloudy 89º 2% ENE 12 mph 61%
6pm Partly Cloudy 87º 2% ENE 13 mph 64%
7pm Partly Cloudy 85º 3% ENE 12 mph 66%
8pm Partly Cloudy 83º 2% ENE 10 mph 69%
9pm Partly Cloudy 82º 3% ENE 8 mph 75%
10pm Mostly Clear 81º 4% ENE 7 mph 77%
11pm Partly Cloudy 80º 5% ENE 6 mph 81%
Wed
Jul 1 		Partly Cloudy
View Hourly 		90º / 75º 24% NE 15 mph 64%
12am Partly Cloudy 80º 5% ENE 6 mph 82%
1am Partly Cloudy 79º 5% NE 5 mph 84%
2am Partly Cloudy 79º 6% NE 5 mph 84%
3am Partly Cloudy 79º 6% NE 5 mph 85%
4am Partly Cloudy 78º 7% NE 5 mph 87%
5am Mostly Cloudy 78º 19% NNE 5 mph 87%
6am Mostly Cloudy 78º 22% NNE 5 mph 87%
7am Partly Cloudy 78º 19% NNE 5 mph 87%
8am Partly Cloudy 80º 9% NNE 7 mph 83%
9am Partly Cloudy 83º 22% NE 8 mph 73%
10am Partly Cloudy 85º 8% NE 10 mph 67%
11am Partly Cloudy 87º 5% NE 11 mph 63%
12pm Partly Cloudy 88º 15% NE 13 mph 60%
1pm Partly Cloudy 89º 24% NE 14 mph 57%
2pm Partly Cloudy 88º 20% ENE 14 mph 59%
3pm Partly Cloudy 89º 15% ENE 15 mph 55%
4pm Partly Cloudy 89º 15% ENE 14 mph 54%
5pm Partly Cloudy 88º 15% ENE 13 mph 56%
Thu
Jul 2 		Partly Cloudy 90º / 75º 15% NE 12 mph 62%
Fri
Jul 3 		PM Thunderstorms 92º / 76º 46% ENE 11 mph 65%
Sat
Jul 4 		PM Thunderstorms 93º / 76º 59% SSW 10 mph 66%
Sun
Jul 5 		PM Thunderstorms 93º / 76º 64% SSW 10 mph 67%
Mon
Jul 6 		PM Thunderstorms 93º / 76º 44% SW 10 mph 67%

Weather Radar for Main Street Bridge, St Johns River, FL See Radar

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* Playback displays weather for the past 6 hours.

NOAA Weather Marine Forecast for Main Street Bridge, St Johns River, FL

This Afternoon
High : 89ºF
ESE wind around 8 kt. A chance of showers and thunderstorms. Seas 1 ft or less.
Tonight
Low : 80ºF
Variable winds 5 kt or less. A chance of showers and thunderstorms, mainly before 10pm. Seas 1 ft or less.
Tuesday
High : 90ºF
Variable winds less than 5 kt becoming ENE 11 to 16 kt in the morning. A slight chance of showers and thunderstorms, mainly between 1pm and 2pm. Seas 1 ft or less.
Tuesday Night
Low : 79ºF
ENE wind 5 to 9 kt. Partly cloudy. Seas 1 ft or less.
Wednesday
High : 88ºF
NE wind 9 to 15 kt. A slight chance of showers and thunderstorms before 2pm. Seas 1 ft or less.
Wednesday Night
Low : 77ºF
ENE wind 5 to 10 kt becoming variable and less than 5 kt after midnight. Mostly clear. Seas 1 ft or less.
Thursday
High : 86ºF
Variable winds less than 5 kt becoming ENE 6 to 11 kt in the morning. A slight chance of showers before 2pm. Seas 1 ft or less.
Thursday Night
Low : 77ºF
E wind 5 to 8 kt becoming variable and less than 5 kt in the evening. Mostly clear. Seas 1 ft or less.
Friday
High : 90ºF
Variable winds less than 5 kt becoming E 5 to 10 kt in the afternoon. A slight chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

NOAA Buoy Data Near Main Street Bridge, St Johns River, FL See Map

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    Wind Speed Forecast for Main Street Bridge, St Johns River, FL

    MondayTuesdayWednesday
    Wind Speed (MPH) 7422712137551014
    10pm2am6am10am2pm6pm10pm2am6am10am2pm6pm
    MPH 7422712137551014
    DIR ENESSWNENEENEENEENENENNENEENE

    Current Weather Conditions In Main Street Bridge, St Johns River, FL

    As Of: 38 minutes ago

    • 95ºF
    • 105ºF
    • 7mph
    • 0º (ENE)
    • 7mph
    • Mostly Cloudy
    • 9mi
    • 30.00"
    • 48%
    • 0ºF

    The weather right now in Main Street Bridge, St Johns River, FL is Mostly Cloudy. The current temperature is 95°F, and the expected high and low for today, Monday, June 29, 2026, are -° high temperature and 78°F low temperature. The wind is currently blowing at 7 miles per hour, and coming from the East Northeast. The wind is gusting to 7 mph. With the wind and the atmosphere the temperature feels like 105° Fahrenheit. Expected precipitation is 22 percent, with current humidity at 48 percent, and air pressure at 30 in. Visibility is 9 nautical miles. There are 1 current weather alert(s).

    Weather Alerts
    Heat Advisory - 12:53am Mon Jun 29 2026

    ...HEAT ADVISORY IN EFFECT FROM NOON TODAY TO 7 PM EDT THIS EVENING...

    WHAT: Heat index values up to 109 expected.

    WHERE: Portions of northeast and northern Florida and southeast
    Georgia.

    WHEN: From noon today to 7 PM EDT this evening.

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

    PRECAUTIONARY / PREPAREDNESS ACTIONS:

    Drink plenty of fluids, stay in an air-conditioned room, stay out of
    the sun, and check up on relatives and neighbors.

    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.

    &&