Pima weather by month
What a typical year looks like in Pima, Arizona: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Safford Agricultural Center, 18 km from Pima; records cover 1948–2026.
The year at a glance
- Precipitation a year
- 8.8 in223 mm
- Snow a year
- 0.2 in0.5 cm
- Last spring freeze
- Mar 31
- First fall freeze
- Nov 6
- Heating degree days
- 2,346
- Cooling degree days
- 2,416
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 107°41° (cooling, 1%).
Month by month
Pima in January
Highs average 62°17° and lows 30°−1°, with 0.71 in18 mm of precipitation and 0.2 in0.5 cm of snow in a typical January.
- Record high
- 79°26° (1971)
- Record low
- 9°−13° (1950)
- Heating degree days
- 584
- Cooling degree days
- 0
Pima in February
Highs average 67°19° and lows 34°1°, with 0.66 in17 mm of precipitation in a typical February.
- Record high
- 89°32° (2026)
- Record low
- 5°−15° (2011)
- Heating degree days
- 410
- Cooling degree days
- 0
Pima in March
Highs average 74°24° and lows 39°4°, with 0.45 in11 mm of precipitation in a typical March.
- Record high
- 101°38° (2026)
- Record low
- 16°−9° (1965)
- Heating degree days
- 260
- Cooling degree days
- 6
Pima in April
Highs average 83°28° and lows 46°8°, with 0.21 in5.3 mm of precipitation in a typical April.
- Record high
- 100°38° (2000)
- Record low
- 24°−4° (2023)
- Heating degree days
- 94
- Cooling degree days
- 64
Pima in May
Highs average 91°33° and lows 54°12°, with 0.18 in4.6 mm of precipitation in a typical May.
- Record high
- 108°42° (2000)
- Record low
- 28°−2° (1967)
- Heating degree days
- 14
- Cooling degree days
- 246
Pima in June
Highs average 100°38° and lows 63°17°, with 0.27 in6.9 mm of precipitation in a typical June.
- Record high
- 114°46° (1994)
- Record low
- 39°4° (1955)
- Heating degree days
- 0
- Cooling degree days
- 489
Pima in July
Highs average 99°37° and lows 69°21°, with 1.4 in34 mm of precipitation in a typical July.
- Record high
- 113°45° (1995)
- Record low
- 48°9° (1954)
- Heating degree days
- 0
- Cooling degree days
- 595
Pima in August
Highs average 97°36° and lows 68°20°, with 1.8 in47 mm of precipitation in a typical August.
- Record high
- 113°45° (2025)
- Record low
- 47°8° (1956)
- Heating degree days
- 0
- Cooling degree days
- 541
Pima in September
Highs average 93°34° and lows 61°16°, with 1.1 in27 mm of precipitation in a typical September.
- Record high
- 108°42° (2023)
- Record low
- 37°3° (1965)
- Heating degree days
- 1
- Cooling degree days
- 364
Pima in OctoberThis month
Highs average 84°29° and lows 48°9°, with 0.75 in19 mm of precipitation in a typical October.
- Record high
- 101°38° (2024)
- Record low
- 23°−5° (1971)
- Heating degree days
- 63
- Cooling degree days
- 105
Pima in November
Highs average 72°22° and lows 37°3°, with 0.51 in13 mm of precipitation in a typical November.
- Record high
- 91°33° (2020)
- Record low
- 14°−10° (2010)
- Heating degree days
- 320
- Cooling degree days
- 6
Pima in December
Highs average 61°16° and lows 30°−1°, with 0.77 in20 mm of precipitation in a typical December.
- Record high
- 81°27° (2025)
- Record low
- 7°−14° (1974)
- Heating degree days
- 600
- Cooling degree days
- 0