Sierra Vista weather by month
What a typical year looks like in Sierra Vista, Arizona: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Sierra Vista, 5 km from Sierra Vista; records cover 1982–2026.
The year at a glance
- Precipitation a year
- 13 in330 mm
- Snow a year
- 0.4 in1 cm
- Last spring freeze
- Mar 25
- First fall freeze
- Nov 17
- Heating degree days
- 2,667
- Cooling degree days
- 1,451
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 22°−6° (heating, 99%) and 101°38° (cooling, 1%).
Month by month
Sierra Vista in January
Highs average 61°16° and lows 30°−1°, with 0.78 in20 mm of precipitation and 0.4 in1 cm of snow in a typical January.
- Record high
- 81°27° (1999)
- Record low
- 12°−11° (1987)
- Heating degree days
- 608
- Cooling degree days
- 0
Sierra Vista in February
Highs average 64°18° and lows 33°0°, with 0.64 in16 mm of precipitation in a typical February.
- Record high
- 86°30° (2014)
- Record low
- 4°−16° (2011)
- Heating degree days
- 462
- Cooling degree days
- 0
Sierra Vista in March
Highs average 71°21° and lows 38°3°, with 0.48 in12 mm of precipitation in a typical March.
- Record high
- 95°35° (2026)
- Record low
- 22°−6° (2018)
- Heating degree days
- 342
- Cooling degree days
- 1
Sierra Vista in April
Highs average 78°25° and lows 43°6°, with 0.25 in6.4 mm of precipitation in a typical April.
- Record high
- 97°36° (1989)
- Record low
- 24°−4° (2023)
- Heating degree days
- 161
- Cooling degree days
- 15
Sierra Vista in May
Highs average 85°29° and lows 50°10°, with 0.2 in5.1 mm of precipitation in a typical May.
- Record high
- 102°39° (2002)
- Record low
- 35°2° (2017)
- Heating degree days
- 42
- Cooling degree days
- 126
Sierra Vista in June
Highs average 94°34° and lows 60°15°, with 0.54 in14 mm of precipitation in a typical June.
- Record high
- 110°43° (2017)
- Record low
- 43°6° (2023)
- Heating degree days
- 1
- Cooling degree days
- 353
Sierra Vista in July
Highs average 92°33° and lows 63°17°, with 3.5 in90 mm of precipitation in a typical July.
- Record high
- 108°42° (1989)
- Record low
- 51°11° (2009)
- Heating degree days
- 0
- Cooling degree days
- 372
Sierra Vista in August
Highs average 90°32° and lows 62°16°, with 3.3 in84 mm of precipitation in a typical August.
- Record high
- 105°41° (2023)
- Record low
- 53°12° (1987)
- Heating degree days
- 0
- Cooling degree days
- 326
Sierra Vista in September
Highs average 87°30° and lows 57°14°, with 1.3 in33 mm of precipitation in a typical September.
- Record high
- 103°39° (2023)
- Record low
- 43°6° (2000)
- Heating degree days
- 4
- Cooling degree days
- 207
Sierra Vista in OctoberThis month
Highs average 80°27° and lows 47°8°, with 0.59 in15 mm of precipitation in a typical October.
- Record high
- 96°36° (1983)
- Record low
- 26°−3° (2019)
- Heating degree days
- 94
- Cooling degree days
- 49
Sierra Vista in November
Highs average 70°21° and lows 37°3°, with 0.53 in13 mm of precipitation in a typical November.
- Record high
- 86°30° (2017)
- Record low
- 19°−7° (2004)
- Heating degree days
- 350
- Cooling degree days
- 2
Sierra Vista in December
Highs average 62°16° and lows 30°−1°, with 0.85 in22 mm of precipitation in a typical December.
- Record high
- 81°27° (2016)
- Record low
- 15°−9° (1987)
- Heating degree days
- 603
- Cooling degree days
- 0