Places › Denver, CO › September
Denver in September
One of the best months — score 89 of 100
Typical September days in Denver reach about 80°F with nights near 48°F.
Avg high
80°F
1991–2020 normal
Avg low
48°F
1991–2020 normal
Rain total
1.51 in
in a typical September
Rain days
6
days with at least 0.01 in
Daylight
12h 24m
at mid-September, computed
Snowfall
0.8 in
in a typical September
What to pack for Denver in September
- A warm jacket for evenings and early starts.
- Layers — afternoons run about 32° warmer than mornings.
- A compact rain layer — about 6 days see rain in a typical September.
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 Denver
JAN
46°F
Rain 5 days
Daylight 9h 38mFEB
48°F
Rain 6 days
Daylight 10h 38mMAR
56°F
Rain 6 days
Daylight 11h 49mAPR
62°F
Rain 8 days
Daylight 13h 12mMAY
72°F
Rain 11 days
Daylight 14h 20mJUN
84°F
Rain 8 days
Daylight 14h 58mJUL
90°F
Rain 9 days
Daylight 14h 43mAUG
88°F
Rain 9 days
Daylight 13h 44mSEP
80°F
Rain 6 days
Daylight 12h 24mOCT
67°F
★ Best
Rain 5 days
Daylight 11h 05mNOV
55°F
Rain 6 days
Daylight 9h 56mDEC
46°F
Rain 5 days
Daylight 9h 22m
46°F
Rain 5 days
Daylight 9h 38mFEB
48°F
Rain 6 days
Daylight 10h 38mMAR
56°F
Rain 6 days
Daylight 11h 49mAPR
62°F
Rain 8 days
Daylight 13h 12mMAY
72°F
Rain 11 days
Daylight 14h 20mJUN
84°F
Rain 8 days
Daylight 14h 58mJUL
90°F
Rain 9 days
Daylight 14h 43mAUG
88°F
Rain 9 days
Daylight 13h 44mSEP
80°F
Rain 6 days
Daylight 12h 24mOCT
67°F
★ Best
Rain 5 days
Daylight 11h 05mNOV
55°F
Rain 6 days
Daylight 9h 56mDEC
46°F
Rain 5 days
Daylight 9h 22m
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.