Weather forecast for today -
Saturday, May 21.
![Mostly Cloudy]()
6:40am
8:06pm
EDT
Mostly Cloudy91°F / 82°F
- Wind: 19 mph ESE
- Humidity: 68%
- Precip. probability: 15%
- Precipitation: 0"
- UV index: 9
Today, in Big Coppitt Key, the weather will be predominantly cloudy. The highest predicted temperature is a hot 91.4°F (33°C), while the lowest temperature will be a moderately hot 82.4°F (28°C).
The maximum heat index (a.k.a. 'felt air temperature'), which represents the influence of relative humidity on air temperature, is appraised at a blistering 108.7°F (42.6°C). Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Beware: Heat cramps and heat exhaustion are very likely. Heatstroke is imminent with prolonged activity.