Weather forecast for todayBig Coppitt Key, FL

Weather forecast for today

Current condition 6:23 am EDT

  • 79°F
  • Feels like:
    79°F
Light Rain
Light Rain
  • Precipitation: 0"
  • Wind: 19mphNE 40°
  • Humidity: 85%
  • Dewpoint: 73°F
  • Pressure: 29.98"Hg
  • Visibility: 9mi
  • UV index: 0
  • ▼
Currently, in Big Coppitt Key, faint rain showers are drifting in from the clouds above.
The temperature is a temperate 78.8°F. The current temperature is at the minimum predicted for today.

Sunday Oct 18, 2026

  • 84°F
  • 79°F
Heavy Thunderstorms / Wind
Heavy Thunderstorms / Wind
  • Precip. probability: 85%
  • Precipitation: 0.83"
  • Wind: 21mphNE 50°
  • Humidity: 79%
  • UV index: 7
  • Sunrise: 7:26 am EDT
  • Sunset: 6:57 pm EDT
  • ▼
Today, on Sunday, October 18, severe storms with powerful winds may disrupt outdoor plans.
Increased precipitation is predicted. The highest daytime temperature will reach a moderately hot 84.2°F, creating a slight contrast with the forecasted nighttime low of a warm 78.8°F.
The maximum heat index, which indicates how humid air affects the felt temperature, is assessed at a sizzling 95°F. Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Today's forecasted high will be in line with October's typical peak of 82°F.
Sunrise will be at 7:26 am and sunset at 6:57 pm; the daylight will last for 11h and 31min.

Hourly overview

Hourly temperatures

Warmest hour: 3 pm 93°C.
Coldest hour: 7 am 79°C.

Chance of precipitation

Highest chance: 68%.

Hourly weather forecast

  • 7 am
  • 79°F
  • Feels like:
    79°F
Showers / Wind
Showers / Wind
  • Precip. probability: 68%
  • Precipitation: 0.04"
  • Wind: 20mphNE 39°
  • Humidity: 85%
  • Pressure: 29.97"Hg
  • Visibility: 5mi
  • UV index: 0
  • ▼
Sunrise: 7:26 am
  • 8 am
  • 79°F
  • Feels like:
    84°F
Cloudy
Cloudy
  • Precip. probability: 18%
  • Precipitation: 0"
  • Wind: 19mphNE 41°
  • Humidity: 84%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 9 am
  • 81°F
  • Feels like:
    86°F
Cloudy / Wind
Cloudy / Wind
  • Precip. probability: 13%
  • Precipitation: 0"
  • Wind: 20mphNE 41°
  • Humidity: 81%
  • Pressure: 30"Hg
  • Visibility: 9mi
  • UV index: 1
  • ▼
  • 10 am
  • 81°F
  • Feels like:
    88°F
Cloudy / Wind
Cloudy / Wind
  • Precip. probability: 12%
  • Precipitation: 0"
  • Wind: 21mphNE 45°
  • Humidity: 79%
  • Pressure: 30"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 11 am
  • 82°F
  • Feels like:
    90°F
Mostly Cloudy / Wind
Mostly Cloudy / Wind
  • Precip. probability: 13%
  • Precipitation: 0"
  • Wind: 21mphNE 48°
  • Humidity: 79%
  • Pressure: 30"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 12 pm
  • 82°F
  • Feels like:
    90°F
Mostly Cloudy / Wind
Mostly Cloudy / Wind
  • Precip. probability: 14%
  • Precipitation: 0"
  • Wind: 20mphNE 54°
  • Humidity: 77%
  • Pressure: 30"Hg
  • Visibility: 10mi
  • UV index: 5
  • ▼
  • 1 pm
  • 84°F
  • Feels like:
    91°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 20%
  • Precipitation: 0"
  • Wind: 19mphNE 54°
  • Humidity: 76%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 7
  • ▼
  • 2 pm
  • 84°F
  • Feels like:
    93°F
Isolated Thunderstorms
Isolated Thunderstorms
  • Precip. probability: 32%
  • Precipitation: 0.04"
  • Wind: 18mphENE 60°
  • Humidity: 75%
  • Pressure: 29.97"Hg
  • Visibility: 9mi
  • UV index: 5
  • ▼
  • 3 pm
  • 84°F
  • Feels like:
    93°F
Isolated Thunderstorms
Isolated Thunderstorms
  • Precip. probability: 31%
  • Precipitation: 0.04"
  • Wind: 19mphENE 60°
  • Humidity: 74%
  • Pressure: 29.94"Hg
  • Visibility: 9mi
  • UV index: 3
  • ▼
  • 4 pm
  • 84°F
  • Feels like:
    91°F
Scattered Thunderstorms
Scattered Thunderstorms
  • Precip. probability: 53%
  • Precipitation: 0.04"
  • Wind: 19mphENE 59°
  • Humidity: 75%
  • Pressure: 29.94"Hg
  • Visibility: 7mi
  • UV index: 2
  • ▼
  • 5 pm
  • 82°F
  • Feels like:
    91°F
Heavy Thunderstorms
Heavy Thunderstorms
  • Precip. probability: 68%
  • Precipitation: 0.47"
  • Wind: 19mphNE 48°
  • Humidity: 77%
  • Pressure: 29.91"Hg
  • Visibility: 4mi
  • UV index: 1
  • ▼
  • 6 pm
  • 81°F
  • Feels like:
    88°F
Thunderstorms
Thunderstorms
  • Precip. probability: 67%
  • Precipitation: 0.16"
  • Wind: 19mphNE 50°
  • Humidity: 79%
  • Pressure: 29.94"Hg
  • Visibility: 6mi
  • UV index: 0
  • ▼
Sunset: 6:57 pm
  • 7 pm
  • 81°F
  • Feels like:
    88°F
Scattered Thunderstorms / Wind
Scattered Thunderstorms / Wind
  • Precip. probability: 51%
  • Precipitation: 0.08"
  • Wind: 21mphNE 52°
  • Humidity: 79%
  • Pressure: 29.94"Hg
  • Visibility: 7mi
  • UV index: 0
  • ▼
  • 8 pm
  • 81°F
  • Feels like:
    86°F
Few Showers / Wind
Few Showers / Wind
  • Precip. probability: 31%
  • Precipitation: 0.04"
  • Wind: 22mphNE 53°
  • Humidity: 81%
  • Pressure: 29.97"Hg
  • Visibility: 9mi
  • UV index: 0
  • ▼
  • 9 pm
  • 81°F
  • Feels like:
    86°F
Mostly Cloudy / Wind
Mostly Cloudy / Wind
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 23mphNE 46°
  • Humidity: 81%
  • Pressure: 29.97"Hg
  • Visibility: 8mi
  • UV index: 0
  • ▼
  • 10 pm
  • 81°F
  • Feels like:
    86°F
Mostly Cloudy / Wind
Mostly Cloudy / Wind
  • Precip. probability: 23%
  • Precipitation: 0"
  • Wind: 23mphNE 49°
  • Humidity: 81%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 11 pm
  • 81°F
  • Feels like:
    86°F
Mostly Cloudy / Wind
Mostly Cloudy / Wind
  • Precip. probability: 20%
  • Precipitation: 0"
  • Wind: 22mphNE 50°
  • Humidity: 82%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Today, a combination of cloud-filled, lightning-active and damp weather is forecasted.
Rainfall is forecasted at 7 am, and from 2 pm to 8 pm. With elevated precipitation of 0.47", most rainfall is expected at 5 pm.
The temperature will vary between a minimum of 78.8°F and a maximum of 84.2°F. The feels-like temperature will vary between a minimum of 78.8°F and a maximum of 93.2°F. The hottest part of the day will be from 1 pm to 4 pm.
Today, expect conditions close to October's usual high temperature. Today, the night is expected to be also close to the typical October low of 79.7°F.
Updated: Oct 18, 2026 @ 10:23:21 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

At 6:23 am EDT, the temperature is 78.8°F.

Today, expect intense lightning storms with powerful gusty winds.

Substantial precipitation of 0.83" is expected with a high probability.

Today, the maximum temperature will be 84.2°F, while the minimum temperature will be 78.8°F. The maximum heat index, which combines relative humidity and air temperature, is assessed at 95°F.
The maximum temperature today will be in line with the average highest temperature in October. Today, the lowest temperature will be also in line with the average low temperature.

On Sunday, in Big Coppitt Key, sunrise will be at 7:26 am and sunset at 6:57 pm (EDT).

In Big Coppitt Key, today, there will be 11h and 31min of daylight.