Rochester weather by month
What a typical year looks like in Rochester, Indiana: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Rochester, 1 km from Rochester; records cover 1904–2026.
The year at a glance
- Precipitation a year
- 40.8 in1035 mm
- Snow a year
- 30 in76 cm
- Last spring freeze
- Apr 23
- First fall freeze
- Oct 16
- Heating degree days
- 6,169
- Cooling degree days
- 815
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −3°−19° (heating, 99%) and 92°33° (cooling, 1%).
Month by month
Rochester in January
Highs average 32°0° and lows 17°−8°, with 2.8 in72 mm of precipitation and 11 in27 cm of snow in a typical January.
- Record high
- 69°21° (1950)
- Record low
- −24°−31° (1985)
- Heating degree days
- 1252
- Cooling degree days
- 0
Rochester in February
Highs average 36°2° and lows 20°−7°, with 2.3 in58 mm of precipitation and 8 in20 cm of snow in a typical February.
- Record high
- 73°23° (2000)
- Record low
- −21°−29° (1905)
- Heating degree days
- 1043
- Cooling degree days
- 0
Rochester in March
Highs average 47°8° and lows 28°−2°, with 2.6 in67 mm of precipitation and 3 in8 cm of snow in a typical March.
- Record high
- 86°30° (2012)
- Record low
- −7°−22° (1980)
- Heating degree days
- 848
- Cooling degree days
- 2
Rochester in April
Highs average 60°16° and lows 39°4°, with 3.9 in98 mm of precipitation and 0.5 in1.3 cm of snow in a typical April.
- Record high
- 93°34° (1930)
- Record low
- 8°−13° (1982)
- Heating degree days
- 478
- Cooling degree days
- 7
Rochester in May
Highs average 71°22° and lows 50°10°, with 4.4 in112 mm of precipitation in a typical May.
- Record high
- 96°36° (1914)
- Record low
- 24°−4° (1926)
- Heating degree days
- 196
- Cooling degree days
- 60
Rochester in June
Highs average 80°27° and lows 60°16°, with 4.3 in108 mm of precipitation in a typical June.
- Record high
- 105°41° (1934)
- Record low
- 20°−7° (1926)
- Heating degree days
- 32
- Cooling degree days
- 183
Rochester in July
Highs average 83°28° and lows 63°17°, with 4.4 in113 mm of precipitation in a typical July.
- Record high
- 109°43° (1934)
- Record low
- 33°1° (1925)
- Heating degree days
- 5
- Cooling degree days
- 253
Rochester in August
Highs average 82°28° and lows 61°16°, with 4.1 in105 mm of precipitation in a typical August.
- Record high
- 102°39° (1916)
- Record low
- 35°2° (1965)
- Heating degree days
- 11
- Cooling degree days
- 205
Rochester in September
Highs average 76°24° and lows 53°12°, with 3.2 in81 mm of precipitation in a typical September.
- Record high
- 103°39° (1939)
- Record low
- 28°−2° (1951)
- Heating degree days
- 102
- Cooling degree days
- 91
Rochester in OctoberThis month
Highs average 64°18° and lows 43°6°, with 3.2 in81 mm of precipitation in a typical October.
- Record high
- 91°33° (1939)
- Record low
- 14°−10° (1925)
- Heating degree days
- 386
- Cooling degree days
- 14
Rochester in November
Highs average 49°9° and lows 32°0°, with 3.1 in78 mm of precipitation and 1.3 in3.3 cm of snow in a typical November.
- Record high
- 81°27° (1933)
- Record low
- −4°−20° (1950)
- Heating degree days
- 734
- Cooling degree days
- 0
Rochester in December
Highs average 37°3° and lows 23°−5°, with 2.4 in62 mm of precipitation and 6 in16 cm of snow in a typical December.
- Record high
- 70°21° (1982)
- Record low
- −30°−34° (1924)
- Heating degree days
- 1082
- Cooling degree days
- 0