Rio weather by month
What a typical year looks like in Rio, Florida: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at STUART, 3 km from Rio; records cover 1936–2026.
The year at a glance
- Precipitation a year
- 62.7 in1593 mm
- Snow a year
- Rare
- Last spring freeze
- Rare
- First fall freeze
- Rare
- Heating degree days
- 256
- Cooling degree days
- 4,043
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 40°4° (heating, 99%) and 95°35° (cooling, 1%).
Month by month
Rio in January
Highs average 74°23° and lows 56°13°, with 3 in76 mm of precipitation in a typical January.
- Record high
- 89°32° (1942)
- Record low
- 23°−5° (1985)
- Heating degree days
- 94
- Cooling degree days
- 93
Rio in February
Highs average 76°25° and lows 59°15°, with 2.6 in66 mm of precipitation in a typical February.
- Record high
- 93°34° (1944)
- Record low
- 28°−2° (1989)
- Heating degree days
- 52
- Cooling degree days
- 119
Rio in March
Highs average 78°26° and lows 61°16°, with 3.8 in96 mm of precipitation in a typical March.
- Record high
- 93°34° (1944)
- Record low
- 27°−3° (1980)
- Heating degree days
- 30
- Cooling degree days
- 182
Rio in April
Highs average 82°28° and lows 67°19°, with 3.6 in90 mm of precipitation in a typical April.
- Record high
- 98°37° (1945)
- Record low
- 37°3° (1971)
- Heating degree days
- 3
- Cooling degree days
- 285
Rio in May
Highs average 86°30° and lows 71°22°, with 5.7 in144 mm of precipitation in a typical May.
- Record high
- 98°37° (1953)
- Record low
- 45°7° (1971)
- Heating degree days
- 0
- Cooling degree days
- 411
Rio in June
Highs average 89°32° and lows 74°24°, with 7.4 in189 mm of precipitation in a typical June.
- Record high
- 102°39° (1944)
- Record low
- 55°13° (1980)
- Heating degree days
- 0
- Cooling degree days
- 504
Rio in July
Highs average 91°33° and lows 76°24°, with 6.1 in154 mm of precipitation in a typical July.
- Record high
- 105°41° (1942)
- Record low
- 59°15° (1971)
- Heating degree days
- 0
- Cooling degree days
- 564
Rio in August
Highs average 91°33° and lows 76°24°, with 8.5 in216 mm of precipitation in a typical August.
- Record high
- 99°37° (1944)
- Record low
- 59°15° (2008)
- Heating degree days
- 0
- Cooling degree days
- 564
Rio in September
Highs average 89°32° and lows 75°24°, with 8.3 in210 mm of precipitation in a typical September.
- Record high
- 102°39° (1992)
- Record low
- 58°14° (2008)
- Heating degree days
- 0
- Cooling degree days
- 510
Rio in OctoberThis month
Highs average 85°30° and lows 72°22°, with 6.5 in164 mm of precipitation in a typical October.
- Record high
- 97°36° (1941)
- Record low
- 42°6° (1989)
- Heating degree days
- 2
- Cooling degree days
- 418
Rio in November
Highs average 80°27° and lows 65°18°, with 4.2 in106 mm of precipitation in a typical November.
- Record high
- 100°38° (1998)
- Record low
- 31°−1° (1950)
- Heating degree days
- 16
- Cooling degree days
- 238
Rio in December
Highs average 76°24° and lows 60°16°, with 3.2 in82 mm of precipitation in a typical December.
- Record high
- 99°37° (2002)
- Record low
- 26°−3° (1962)
- Heating degree days
- 59
- Cooling degree days
- 155