Miami, Florida weather in January

Averages from 2021–2025 (155 days of record).

Average high

75°F

Average low

62°F

Rainy days

~10 per month

Total precipitation

2.3 in

Warmest recorded

82°F

Coldest recorded

40°F

Expect January days in Miami, Florida to top out around 75°F and cool to about 62°F overnight, with roughly 10 days of measurable rain across the month. In recent years January has ranged from 40°F to 82°F.