Cosmo, FL Weather Forecast
Local 7-day forecast
Mostly Sunny then Slight Chance Rain Showers
Track current conditions, temperature changes, wind, and the full daily outlook for Cosmo, FL in one place.
A slight chance of rain showers after 4pm. Mostly sunny. High near 88, with temperatures falling to around 82 in the afternoon. Northeast wind 8 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
Local Weather Overview
This forecast page for Cosmo, FL is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Sep 16, 2026 8:53 PM EDT.
The active forecast window currently covers Sep 17 to Sep 23, 2026 for Cosmo, FL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 17 to Sep 23, 2026
- Latest sync
- Sep 16, 2026 8:53 PM EDT
- Forecast office
- JAX
- Source
- NOAA / NWS
Daily Outlook
This Week in Cosmo
Thursday looks like the warmest upcoming period in Cosmo at 88 degrees F.
Thursday Night is the coolest period ahead with temperatures near 74 degrees F.
The strongest winds are forecast for Thursday at about 8 to 20 mph NE.
Precipitation is mentioned in 11 upcoming forecast periods.
Forecast Details
- Last updated
- Sep 16, 2026 8:53 PM EDT
- Coverage
- 7 days
- Time zone
- America/New_York
- Forecast office
- JAX
- Radar station
- KJAX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A slight chance of rain showers before 2am. Mostly cloudy, with a low around 74. Northeast wind 5 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
Mostly sunny. High near 87, with temperatures falling to around 83 in the afternoon. Northeast wind 6 to 13 mph, with gusts as high as 20 mph.
Partly cloudy. Low around 75, with temperatures rising to around 76 overnight. East wind 2 to 10 mph, with gusts as high as 16 mph.
A slight chance of rain showers between 8am and 11am, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 87. Chance of precipitation is 20%.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 77. Chance of precipitation is 30%.
A slight chance of showers and thunderstorms before 8am, then showers and thunderstorms likely. Partly sunny, with a high near 86. Chance of precipitation is 60%.
Showers and thunderstorms likely before 8pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 76. Chance of precipitation is 60%.
A chance of rain showers before 8am, then showers and thunderstorms likely. Partly sunny, with a high near 86. Chance of precipitation is 70%.
Showers and thunderstorms likely. Mostly cloudy, with a low around 75. Chance of precipitation is 70%.
A chance of rain showers before 8am, then showers and thunderstorms likely. Partly sunny, with a high near 86. Chance of precipitation is 70%.
Showers and thunderstorms likely. Mostly cloudy, with a low around 76. Chance of precipitation is 70%.
A chance of rain showers before 8am, then showers and thunderstorms likely. Mostly cloudy, with a high near 85.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Thursday
Sep 17
|
Mostly Sunny then Slight Chance Rain Showers
|
88°F |
8 to 20 mph
NE
|
|
Thursday Night
Sep 17
|
Slight Chance Rain Showers
|
74°F |
5 to 17 mph
NE
|
|
Friday
Sep 18
|
Mostly Sunny
|
87°F |
6 to 13 mph
NE
|
|
Friday Night
Sep 18
|
Partly Cloudy
|
75°F |
2 to 10 mph
E
|
|
Saturday
Sep 19
|
Slight Chance Showers And Thunderstorms
|
87°F |
2 to 13 mph
NE
|
|
Saturday Night
Sep 19
|
Chance Showers And Thunderstorms
|
77°F |
3 to 10 mph
E
|
|
Sunday
Sep 20
|
Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
|
86°F |
3 to 13 mph
NE
|
|
Sunday Night
Sep 20
|
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
|
76°F |
2 to 10 mph
E
|
|
Monday
Sep 21
|
Showers And Thunderstorms Likely
|
86°F |
2 to 10 mph
E
|
|
Monday Night
Sep 21
|
Showers And Thunderstorms Likely
|
75°F |
2 to 9 mph
SE
|
|
Tuesday
Sep 22
|
Showers And Thunderstorms Likely
|
86°F |
2 to 10 mph
N
|
|
Tuesday Night
Sep 22
|
Showers And Thunderstorms Likely
|
76°F |
2 to 9 mph
NE
|
|
Wednesday
Sep 23
|
Showers And Thunderstorms Likely
|
85°F |
5 to 12 mph
NE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Cosmo.