Morgan Hill weather by month
What a typical year looks like in Morgan Hill, California: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Mount Hamilton, 24 km from Morgan Hill; records cover 1948–2026.
The year at a glance
- Precipitation a year
- 27.3 in694 mm
- Snow a year
- 18 in46 cm
- Last spring freeze
- Apr 30
- First fall freeze
- Nov 20
- Heating degree days
- 4,386
- Cooling degree days
- 797
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 24°−4° (heating, 99%) and 89°32° (cooling, 1%).
Month by month
Morgan Hill in January
Highs average 50°10° and lows 39°4°, with 5 in128 mm of precipitation and 4 in11 cm of snow in a typical January.
- Record high
- 74°23° (2021)
- Record low
- 10°−12° (1949)
- Heating degree days
- 640
- Cooling degree days
- 0
Morgan Hill in February
Highs average 49°9° and lows 38°3°, with 4.8 in122 mm of precipitation and 5 in13 cm of snow in a typical February.
- Record high
- 73°23° (2016)
- Record low
- 12°−11° (1949)
- Heating degree days
- 609
- Cooling degree days
- 0
Morgan Hill in March
Highs average 51°11° and lows 39°4°, with 4.4 in112 mm of precipitation and 4 in10 cm of snow in a typical March.
- Record high
- 81°27° (2026)
- Record low
- 17°−8° (1953)
- Heating degree days
- 619
- Cooling degree days
- 0
Morgan Hill in April
Highs average 55°13° and lows 41°5°, with 2.2 in56 mm of precipitation and 1.8 in4.6 cm of snow in a typical April.
- Record high
- 84°29° (1989)
- Record low
- 19°−7° (1953)
- Heating degree days
- 514
- Cooling degree days
- 3
Morgan Hill in May
Highs average 62°17° and lows 47°9°, with 1.3 in33 mm of precipitation in a typical May.
- Record high
- 91°33° (1984)
- Record low
- 25°−4° (1953)
- Heating degree days
- 342
- Cooling degree days
- 27
Morgan Hill in June
Highs average 71°22° and lows 56°13°, with 0.28 in7.1 mm of precipitation in a typical June.
- Record high
- 94°34° (1961)
- Record low
- 28°−2° (1953)
- Heating degree days
- 142
- Cooling degree days
- 97
Morgan Hill in July
Highs average 79°26° and lows 65°18°, with 0 in0 mm of precipitation in a typical July.
- Record high
- 100°38° (1972)
- Record low
- 34°1° (1955)
- Heating degree days
- 22
- Cooling degree days
- 236
Morgan Hill in August
Highs average 79°26° and lows 65°18°, with 0.05 in1.3 mm of precipitation in a typical August.
- Record high
- 103°39° (1978)
- Record low
- 38°3° (1964)
- Heating degree days
- 21
- Cooling degree days
- 224
Morgan Hill in September
Highs average 75°24° and lows 60°16°, with 0.17 in4.3 mm of precipitation in a typical September.
- Record high
- 99°37° (2022)
- Record low
- 35°2° (1948)
- Heating degree days
- 82
- Cooling degree days
- 154
Morgan Hill in OctoberThis month
Highs average 66°19° and lows 52°11°, with 1.3 in34 mm of precipitation in a typical October.
- Record high
- 93°34° (1980)
- Record low
- 20°−7° (1971)
- Heating degree days
- 239
- Cooling degree days
- 51
Morgan Hill in November
Highs average 55°13° and lows 43°6°, with 3 in76 mm of precipitation and 0.9 in2.3 cm of snow in a typical November.
- Record high
- 81°27° (1976)
- Record low
- 18°−8° (1958)
- Heating degree days
- 484
- Cooling degree days
- 5
Morgan Hill in December
Highs average 49°9° and lows 38°3°, with 4.7 in120 mm of precipitation and 2.1 in5.3 cm of snow in a typical December.
- Record high
- 76°24° (1980)
- Record low
- 7°−14° (1990)
- Heating degree days
- 672
- Cooling degree days
- 0