Rocky River weather by month
What a typical year looks like in Rocky River, Ohio: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Cleveland-Hopkins International Airport, 8 km from Rocky River; records cover 1871–2026.
The year at a glance
- Precipitation a year
- 41 in1042 mm
- Snow a year
- 64 in162 cm
- Last spring freeze
- Apr 24
- First fall freeze
- Oct 31
- Heating degree days
- 5,516
- Cooling degree days
- 947
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 2°−17° (heating, 99%) and 93°34° (cooling, 1%).
Month by month
Rocky River in January
Highs average 36°2° and lows 22°−5°, with 3 in76 mm of precipitation and 18 in47 cm of snow in a typical January.
- Record high
- 73°23° (1950)
- Record low
- −20°−29° (1994)
- Heating degree days
- 1114
- Cooling degree days
- 0
Rocky River in February
Highs average 39°4° and lows 24°−5°, with 2.5 in63 mm of precipitation and 15 in38 cm of snow in a typical February.
- Record high
- 77°25° (2017)
- Record low
- −17°−27° (2015)
- Heating degree days
- 949
- Cooling degree days
- 0
Rocky River in March
Highs average 47°8° and lows 31°−1°, with 3.1 in78 mm of precipitation and 11 in27 cm of snow in a typical March.
- Record high
- 83°28° (1910)
- Record low
- −5°−21° (1948)
- Heating degree days
- 811
- Cooling degree days
- 2
Rocky River in April
Highs average 60°16° and lows 41°5°, with 3.8 in95 mm of precipitation and 2.7 in6.9 cm of snow in a typical April.
- Record high
- 88°31° (1925)
- Record low
- 10°−12° (1964)
- Heating degree days
- 447
- Cooling degree days
- 10
Rocky River in May
Highs average 71°22° and lows 51°11°, with 3.8 in96 mm of precipitation in a typical May.
- Record high
- 93°34° (2018)
- Record low
- 25°−4° (1966)
- Heating degree days
- 182
- Cooling degree days
- 66
Rocky River in June
Highs average 80°27° and lows 61°16°, with 3.8 in97 mm of precipitation in a typical June.
- Record high
- 104°40° (1988)
- Record low
- 31°−1° (1972)
- Heating degree days
- 29
- Cooling degree days
- 193
Rocky River in July
Highs average 84°29° and lows 65°19°, with 3.7 in93 mm of precipitation in a typical July.
- Record high
- 103°39° (1941)
- Record low
- 41°5° (1968)
- Heating degree days
- 2
- Cooling degree days
- 296
Rocky River in August
Highs average 82°28° and lows 64°18°, with 3.6 in90 mm of precipitation in a typical August.
- Record high
- 102°39° (1948)
- Record low
- 38°3° (1982)
- Heating degree days
- 4
- Cooling degree days
- 251
Rocky River in September
Highs average 76°24° and lows 57°14°, with 3.9 in100 mm of precipitation in a typical September.
- Record high
- 101°38° (1953)
- Record low
- 32°0° (1942)
- Heating degree days
- 70
- Cooling degree days
- 110
Rocky River in OctoberThis month
Highs average 64°18° and lows 47°8°, with 3.6 in91 mm of precipitation and 0.1 in0.3 cm of snow in a typical October.
- Record high
- 93°34° (2019)
- Record low
- 19°−7° (1988)
- Heating degree days
- 325
- Cooling degree days
- 18
Rocky River in November
Highs average 51°11° and lows 37°3°, with 3.4 in86 mm of precipitation and 5 in11 cm of snow in a typical November.
- Record high
- 82°28° (1950)
- Record low
- 0°−18° (1880)
- Heating degree days
- 631
- Cooling degree days
- 1
Rocky River in December
Highs average 40°5° and lows 28°−2°, with 3 in76 mm of precipitation and 12 in31 cm of snow in a typical December.
- Record high
- 77°25° (1982)
- Record low
- −15°−26° (1989)
- Heating degree days
- 952
- Cooling degree days
- 0