Johnston Key - Southwest End Weather Forecast
- 73
- 82
Chance Rain Showers
- 73
- 79
Breezy
- 73
- 79
Breezy
- 74
- 79
Slight Chance Thunderstorms
- 75
- 80
Partly Sunny
- 75
- 81
Mostly Sunny
Today 20 Apr Monroe Lower Keys
Mostly sunny this Morning, then partly sunny with a slight chance of Showers this afternoon. Highs in the lower to mid 80s. North to northeast Winds near 10 Mph Early, decreasing to 5 to 10 Mph during the morning and early Afternoon, then becoming northeast near 10 Mph late in the afternoon. Chance of rain 20 percent.
Tonight 20 Apr Monroe Lower Keys
Mostly cloudy with a chance of Showers and a slight chance of Thunderstorms. Becoming windy. Lows in the lower 70s. Northeast Winds 10 to 15 Mph, increasing to 20 to 25 Mph. Chance of rain 30 percent.
Johnston Key - Southwest End Temperature Statistics
April Temperature
Key West Naval Air Station (10.6 miles)
Lowest 13 April, 2026
71.1 °FAverage April
77.2 °FHighest 3 April, 2026
84 °F
Climate (2021–Present)
Key West Naval Air Station (10.6 miles)
Average Low 2021–2026
77.2 °FAverage 2021–2026
81.7 °FAverage High 2021–2026
86.5 °F