Alpine weather by month
What a typical year looks like in Alpine, Arizona: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Alpine, 1 km from Alpine; records cover 1912–2026.
The year at a glance
- Precipitation a year
- 20.2 in512 mm
- Snow a year
- 45 in114 cm
- Last spring freeze
- Jun 18
- First fall freeze
- Sep 18
- Heating degree days
- 7,040
- Cooling degree days
- 23
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −2°−19° (heating, 99%) and 86°30° (cooling, 1%).
Month by month
Alpine in January
Highs average 46°8° and lows 15°−9°, with 1.3 in32 mm of precipitation and 11 in27 cm of snow in a typical January.
- Record high
- 72°22° (1967)
- Record low
- −32°−36° (1979)
- Heating degree days
- 1071
- Cooling degree days
- 0
Alpine in February
Highs average 48°9° and lows 18°−8°, with 1.1 in29 mm of precipitation and 10 in25 cm of snow in a typical February.
- Record high
- 72°22° (1967)
- Record low
- −28°−33° (1948)
- Heating degree days
- 890
- Cooling degree days
- 0
Alpine in March
Highs average 54°12° and lows 23°−5°, with 0.92 in23 mm of precipitation and 8 in21 cm of snow in a typical March.
- Record high
- 80°27° (2026)
- Record low
- −25°−32° (1948)
- Heating degree days
- 831
- Cooling degree days
- 0
Alpine in April
Highs average 61°16° and lows 26°−3°, with 0.53 in13 mm of precipitation and 1.7 in4.3 cm of snow in a typical April.
- Record high
- 79°26° (1925)
- Record low
- −6°−21° (1949)
- Heating degree days
- 648
- Cooling degree days
- 0
Alpine in May
Highs average 69°20° and lows 32°0°, with 0.71 in18 mm of precipitation and 0.5 in1.3 cm of snow in a typical May.
- Record high
- 92°33° (1983)
- Record low
- 8°−13° (1950)
- Heating degree days
- 461
- Cooling degree days
- 0
Alpine in June
Highs average 78°26° and lows 39°4°, with 0.83 in21 mm of precipitation in a typical June.
- Record high
- 94°34° (1973)
- Record low
- 13°−11° (1971)
- Heating degree days
- 203
- Cooling degree days
- 5
Alpine in July
Highs average 79°26° and lows 47°8°, with 3.9 in99 mm of precipitation in a typical July.
- Record high
- 94°34° (1979)
- Record low
- 27°−3° (1997)
- Heating degree days
- 86
- Cooling degree days
- 12
Alpine in August
Highs average 76°24° and lows 46°8°, with 4.3 in109 mm of precipitation in a typical August.
- Record high
- 89°32° (1985)
- Record low
- 29°−2° (1949)
- Heating degree days
- 125
- Cooling degree days
- 5
Alpine in September
Highs average 72°22° and lows 39°4°, with 2.3 in59 mm of precipitation in a typical September.
- Record high
- 87°31° (1948)
- Record low
- 17°−8° (1952)
- Heating degree days
- 284
- Cooling degree days
- 1
Alpine in OctoberThis month
Highs average 64°18° and lows 30°−1°, with 1.6 in41 mm of precipitation and 1.3 in3.3 cm of snow in a typical October.
- Record high
- 86°30° (1928)
- Record low
- −1°−18° (1929)
- Heating degree days
- 567
- Cooling degree days
- 0
Alpine in November
Highs average 54°12° and lows 22°−6°, with 1.2 in29 mm of precipitation and 5 in12 cm of snow in a typical November.
- Record high
- 77°25° (1927)
- Record low
- −18°−28° (1952)
- Heating degree days
- 818
- Cooling degree days
- 0
Alpine in December
Highs average 46°8° and lows 16°−9°, with 1.4 in37 mm of precipitation and 8 in20 cm of snow in a typical December.
- Record high
- 72°22° (1958)
- Record low
- −28°−33° (1949)
- Heating degree days
- 1056
- Cooling degree days
- 0