Key West Weather in June
June's weather brings the start of summer's storms to Key West, Florida. Thunderstorms happen more frequently and tropical storms are possible now. Still, it's sunny here for three-quarters of the daytime.
This page gives detailed information on the typical June temperature, precipitation, sun, humidity, wind and storms for Key West. The numbers here are historical averages based on climate data gathered at the Key West International Airport, located on Key West Island.
Temperature
| 89 °F | June average high | 32 °C |
| 79 °F | June average low | 26 °C |
| 7 days | 90 °F max. or more (32 °C) |
| 0 days | 70 °F min. or less (21 °C) |
Typically every June day at Key West has a temperature of at least 80 degrees Fahrenheit (27 degrees Celsius). Temperatures above 100 °F (38 °C) are not expected here this month.
Rain
| 4.2 in | total precipitation | 107 mm |
| 11 days | of rain |
Half the time, Key West receives 2.1 to 6.3 inches (53 to 159 mm) of rainfall in June. One in four years has drier weather, while another one in four is wetter.
Sun
| 76 % | sunshine |
| 5 days | clear skies |
The sun's rays reach the ground in Key West during 76 percent of daylight hours on average in June, for a total of 311 hours in the month. Typically on 5 days this month the sky is mainly clear, with at most 30 percent cloud cover.
Sunlight in June at Key West averages 13 hours and 38 minutes a day. The longest days of the year, from around June 19th to 22nd, last 13 hours and 40 minutes from sunrise to sunset.
Humidity
| 74 % | June average humidity |
The relative humidity in Key West during June usually peaks at 79 percent in the morning then drops to 68 percent in mid afternoon.
| Local Time | 1 am | 4 am | 7 am | 10 am | 1 pm | 4 pm | 7 pm | 10 pm | Humidity % | 78 | 79 | 78 | 71 | 69 | 68 | 73 | 77 |
Wind
| 9.6 mph | June wind speed average | 15.4 kph |
June is less windy than most other months in Key West.
Storms
| 3 days | rainfall of 0.5 inches (13 mm) or more |
| 10 days | with thunderstorms in June |
| 6 % | chance a named storm approaches |
There's a 6 percent probability that a named tropical storm will approach within 100 miles (165 km) of Key West during June, and a 4 percent chance of a category 1 or 2 hurricane. Major hurricanes are unlikely this time of year.
Reference
The weather data here are long-term averages provided by the US National Centers for Environmental Information (NCEI). Temperature and precipitation are 1991-2020 normals while humidity and thunderstorms are 1961-1990 normals. The named storm probabilities come from the Atlantic Oceanographic and Meteorological Laboratory, Hurricane Research Division.