Oro Valley weather by month
What a typical year looks like in Oro Valley, Arizona: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Catalina State Park, 4 km from Oro Valley; records cover 2006–2026.
The year at a glance
- Precipitation a year
- 13.2 in335 mm
- Snow a year
- Rare
- Last spring freeze
- Apr 6
- First fall freeze
- Nov 10
- Heating degree days
- 2,180
- Cooling degree days
- 2,446
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 20°−7° (heating, 99%) and 108°42° (cooling, 1%).
Month by month
Oro Valley in January
Highs average 67°19° and lows 31°−1°, with 1.4 in34 mm of precipitation in a typical January.
- Record high
- 82°28° (2012)
- Record low
- 11°−12° (2007)
- Heating degree days
- 502
- Cooling degree days
- 0
Oro Valley in February
Highs average 68°20° and lows 32°0°, with 1.2 in31 mm of precipitation in a typical February.
- Record high
- 91°33° (2026)
- Record low
- 11°−12° (2011)
- Heating degree days
- 418
- Cooling degree days
- 0
Oro Valley in March
Highs average 75°24° and lows 36°2°, with 0.7 in18 mm of precipitation in a typical March.
- Record high
- 103°39° (2026)
- Record low
- 19°−7° (2021)
- Heating degree days
- 294
- Cooling degree days
- 3
Oro Valley in April
Highs average 82°28° and lows 43°6°, with 0.32 in8.1 mm of precipitation in a typical April.
- Record high
- 101°38° (2012)
- Record low
- 22°−6° (2023)
- Heating degree days
- 122
- Cooling degree days
- 42
Oro Valley in May
Highs average 91°33° and lows 51°10°, with 0.2 in5.1 mm of precipitation in a typical May.
- Record high
- 108°42° (2020)
- Record low
- 31°−1° (2010)
- Heating degree days
- 23
- Cooling degree days
- 198
Oro Valley in June
Highs average 101°38° and lows 60°15°, with 0.35 in8.9 mm of precipitation in a typical June.
- Record high
- 115°46° (2016)
- Record low
- 45°7° (2008)
- Heating degree days
- 0
- Cooling degree days
- 455
Oro Valley in July
Highs average 100°38° and lows 71°22°, with 2.6 in66 mm of precipitation in a typical July.
- Record high
- 112°44° (2020)
- Record low
- 51°11° (2012)
- Heating degree days
- 0
- Cooling degree days
- 626
Oro Valley in August
Highs average 98°37° and lows 69°20°, with 2.5 in65 mm of precipitation in a typical August.
- Record high
- 113°45° (2025)
- Record low
- 56°13° (2016)
- Heating degree days
- 0
- Cooling degree days
- 574
Oro Valley in September
Highs average 96°35° and lows 62°17°, with 1.2 in30 mm of precipitation in a typical September.
- Record high
- 109°43° (2023)
- Record low
- 43°6° (2017)
- Heating degree days
- 1
- Cooling degree days
- 410
Oro Valley in OctoberThis month
Highs average 87°30° and lows 48°9°, with 0.79 in20 mm of precipitation in a typical October.
- Record high
- 105°41° (2024)
- Record low
- 22°−6° (2009)
- Heating degree days
- 53
- Cooling degree days
- 129
Oro Valley in November
Highs average 76°24° and lows 38°3°, with 0.8 in20 mm of precipitation in a typical November.
- Record high
- 94°34° (2009)
- Record low
- 15°−9° (2010)
- Heating degree days
- 260
- Cooling degree days
- 9
Oro Valley in December
Highs average 66°19° and lows 31°−1°, with 1.2 in30 mm of precipitation in a typical December.
- Record high
- 86°30° (2025)
- Record low
- 14°−10° (2010)
- Heating degree days
- 507
- Cooling degree days
- 0