Climateby Month

Phoenix vs Tucson weather

Phoenix, AZ and Tucson, AZ · 108 mi apart

July highs: 107°F in Phoenix, 100°F in Tucson (Phoenix is 7°F warmer). January highs: 68°F and 67°F (Phoenix is 1°F warmer). Phoenix has about 33 wet days a year, Tucson about 47. Muggy days: about 12 a year in Phoenix, about 10 in Tucson.

Phoenix, AZ

40°60°80°100°120° January: normal high 68°F (20°C), low 46°F (8°C) February: normal high 71°F (22°C), low 49°F (9°C) March: normal high 78°F (26°C), low 55°F (13°C) April: normal high 86°F (30°C), low 61°F (16°C) May: normal high 95°F (35°C), low 70°F (21°C) June: normal high 104°F (40°C), low 79°F (26°C) July: normal high 107°F (42°C), low 85°F (29°C) 107° 85° August: normal high 105°F (41°C), low 84°F (29°C) September: normal high 100°F (38°C), low 78°F (26°C) October: normal high 89°F (32°C), low 66°F (19°C) November: normal high 77°F (25°C), low 54°F (12°C) December: normal high 66°F (19°C), low 45°F (7°C) 66° 45° JFMAMJJASOND

Best months: January, February

Tucson, AZ

40°60°80°100°120° January: normal high 67°F (19°C), low 41°F (5°C) February: normal high 69°F (21°C), low 43°F (6°C) March: normal high 76°F (24°C), low 48°F (9°C) April: normal high 83°F (28°C), low 53°F (12°C) May: normal high 92°F (33°C), low 62°F (17°C) June: normal high 101°F (38°C), low 71°F (22°C) 101° 71° July: normal high 100°F (38°C), low 76°F (24°C) August: normal high 99°F (37°C), low 75°F (24°C) September: normal high 95°F (35°C), low 70°F (21°C) October: normal high 86°F (30°C), low 59°F (15°C) November: normal high 75°F (24°C), low 48°F (9°C) December: normal high 66°F (19°C), low 41°F (5°C) 66° 41° JFMAMJJASOND

Best months: January, February, March

Which city for what

  • Cooler summers: Tucson (July high 100°F vs July high 107°F)
  • Fewer wet days: Phoenix (33 a year vs 47 a year)

Listed only where the difference is at least 3°F in highs, 10 days a year or 3 in of snow.

Season by season

SeasonAvg high PhoenixAvg high TucsonWet days PhoenixWet days Tucson
Winter (Dec-Feb)68°F67°F1213
Spring (Mar-May)86°F84°F66
Summer (Jun-Aug)105°F100°F919
Fall (Sep-Nov)89°F86°F710

Side by side over a year

PhoenixTucson
Hot days (90°F+)173158
Freezing nights112
Muggy days1210
Comfortable days104103
Precipitation7.2 in10.6 in
Snowfall0.0 in0.1 in
Frost datesfrost in about 18% of yearslast Feb 5, first Dec 9
Daylight in June / December14.3 h / 10.0 h14.2 h / 10.1 h
Best monthsJanuary, FebruaryJanuary, February, March

Day counts from each city's daily records, 1991-2020. Comfortable days: highs 65-80°F and dew point under 60°F.

Month by month

MonthHigh PhoenixHigh TucsonWet days PhoenixWet days Tucson
January68°F67°F44
February71°F69°F44
March78°F76°F33
April86°F83°F22
May95°F92°F11
June104°F101°F12
July107°F100°F49
August105°F99°F59
September100°F95°F34
October89°F86°F23
November77°F75°F23
December66°F66°F44

Both charts use the same temperature scale.

Where the numbers come from

  • Phoenix, AZ: temperature from Phoenix Sky Harbor Intl Airport (USW00023183), 4.3 mi ESE of the city center; precipitation from Phoenix Sky Harbor Intl Airport (USW00023183). NOAA 1991-2020 normals and daily records.
  • Tucson, AZ: temperature from Tucson Intl Airport (USW00023160), 6.5 mi SSW of the city center; precipitation from Tucson Intl Airport (USW00023160). NOAA 1991-2020 normals and daily records.

Every station for each city, including humidity and frost, is listed on the city page. Methodology.