Lostmans River - Onion Key Weather Forecast
- 62
- 83
Mostly Sunny
- 64
- 86
Mostly Sunny
- 69
- 86
Mostly Sunny
- 66
- 86
Partly Sunny
- 54
- 81
Mostly Sunny
- 57
- 81
Mostly Sunny
- 60
- 83
Mostly Sunny
Today 13 Mar Mainland Monroe
Sunny. Near steady temperature around 80. South Winds around 10 Mph.
Tonight 13 Mar Mainland Monroe
Mostly clear with a slight chance of Showers this Evening, then partly cloudy after midnight. Lows in the lower 60s. South Winds 5 to 10 Mph, becoming northeast after midnight. Chance of rain 20 percent.
Lostmans River - Onion Key Temperature Statistics
March Temperature
Miami, Kendall-Tamiami Executive Airport (43.5 miles)
Lowest 7 March, 2025
45.6 °FAverage March
69.9 °FHighest 5 March, 2025
86.6 °F
Climate (2020–Present)
Miami, Kendall-Tamiami Executive Airport (43.5 miles)
Average Low 2020–2025
70 °FAverage 2020–2025
77.6 °FAverage High 2020–2025
85.9 °F