Lostmans River - Onion Key Weather Forecast
- 65
- 85
Mostly Sunny
- 69
- 86
Mostly Sunny
- 66
- 87
Chance Rain Showers
- 54
- 81
Slight Chance Rain Showers
- 55
- 82
Sunny
- 58
- 84
Mostly Sunny
Today 14 Mar Mainland Monroe
Sunny. Highs in the lower 80s. Northeast Winds around 5 Mph, becoming southeast in the afternoon.
Tonight 14 Mar Mainland Monroe
Partly cloudy. Near steady temperature in the mid 60s. Northeast Winds around 5 Mph.
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