Places › Phoenix, AZ › September
Phoenix in September
An off month — score 51 of 100
Typical September days in Phoenix reach about 100°F with nights near 78°F; rain is rare.
Avg high
100°F
1991–2020 normal
Avg low
78°F
1991–2020 normal
Rain total
0.57 in
in a typical September
Rain days
2
days with at least 0.01 in
Daylight
12h 20m
at mid-September, computed
What to pack for Phoenix in September
- Layers — afternoons run about 22° warmer than mornings.
- Breathable clothes, a hat, and sunscreen — typical afternoons reach about 100°F.
- Pace the midday hours — about 28 days in a typical September reach 90°F.
Every packing line is triggered by a number on this page — the rules are on How we pick.
September vs. the alternatives
The whole year in Phoenix
JAN
68°F
★ Best
Rain 4 days
Daylight 10h 09mFEB
71°F
★ Best
Rain 4 days
Daylight 10h 56mMAR
78°F
Rain 3 days
Daylight 11h 53mAPR
86°F
Rain 2 days
Daylight 12h 58mMAY
94°F
Rain 1 days
Daylight 13h 52mJUN
104°F
Rain 0 days
Daylight 14h 21mJUL
106°F
Rain 4 days
Daylight 14h 10mAUG
105°F
Rain 5 days
Daylight 13h 23mSEP
100°F
Rain 2 days
Daylight 12h 20mOCT
89°F
Rain 2 days
Daylight 11h 17mNOV
76°F
Rain 2 days
Daylight 10h 23mDEC
66°F
★ Best
Rain 4 days
Daylight 9h 57m
68°F
★ Best
Rain 4 days
Daylight 10h 09mFEB
71°F
★ Best
Rain 4 days
Daylight 10h 56mMAR
78°F
Rain 3 days
Daylight 11h 53mAPR
86°F
Rain 2 days
Daylight 12h 58mMAY
94°F
Rain 1 days
Daylight 13h 52mJUN
104°F
Rain 0 days
Daylight 14h 21mJUL
106°F
Rain 4 days
Daylight 14h 10mAUG
105°F
Rain 5 days
Daylight 13h 23mSEP
100°F
Rain 2 days
Daylight 12h 20mOCT
89°F
Rain 2 days
Daylight 11h 17mNOV
76°F
Rain 2 days
Daylight 10h 23mDEC
66°F
★ Best
Rain 4 days
Daylight 9h 57m
Averages are the 1991–2020 climate normals (NOAA National Centers for Environmental Information) for the station named on each page. Rain days = days with at least 0.01 in of precipitation. Daylight is computed for the middle of the month.