Lakewood, CO weather in September
Lakewood is mild in September, with some rain: highs average 76°F and nights drop to about 49°F. Rain or snow falls on about 7 days. Snowfall averages about 1.0 in. A good month for most outdoor plans.
- Normal high
- 76°F
- Normal low
- 49°F
- Wet days
- 7
- 1.3 in total
- Snowfall
- 1.0 in
- normal snowfall
How September changes from start to finish
| September 1 | September 30 | |
|---|---|---|
| Normal high | 81°F | 70°F |
| Normal low | 54°F | 42°F |
| Chance of a wet day | 24% | 21% |
| Sunrise / sunset | 6:28 am / 7:32 pm | 6:55 am / 6:44 pm |
| Daylight | 13.1 h | 11.8 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Mountain Time).
A typical September day
- 6 am52°Fdew point 40°F
- 9 am65°Fdew point 40°F
- Noon74°Fdew point 36°F
- 3 pm76°Fdew point 35°F
- 6 pm68°Fdew point 39°F
- 9 pm60°Fdew point 41°F
NOAA hourly normals (local standard time) from Aurora Buckley Fld ANGB (18 mi away); average wind 8 mph; clear or few clouds in 46% of daytime hours, mostly cloudy or overcast in 35%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F12 of 30
- Hot dayshigh 90°F or more2 of 30
- Muggy daysdaily mean dew point 65°F or more0 of 30
- Wet daysat least 0.01 in of rain or melted snow7 of 30
- Notable rainat least 0.10 in4 of 30
- Freezing nightslow 32°F or below1 of 30
- Snow on the groundsnow depth 1 in or more0 of 30
Average days per September, counted from daily records for each year 1991-2020.
Rain and snow in September
Normal precipitation is 1.3 in; a dry September brings about 0.6 in and a wet one about 1.8 in (25th and 75th percentiles). About 1 day brings half an inch or more. Normal snowfall is 1.0 in.
How September varies from year to year
- Warmest September, 1991-20202010: average high 84°F
- Coolest September1999: average high 72°F
- Wettest September2013: 7.7 in
- Driest September1992: no measurable precipitation
- Highest reading96°F (September 6, 2020)
- Lowest reading23°F (September 29, 1999)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
September compared with August and October
| August | September | October | |
|---|---|---|---|
| Normal high | 84°F | 76°F | 63°F |
| Normal low | 58°F | 49°F | 37°F |
| Wet days | 8 | 7 | 6 |
| Comfortable days | 6 | 12 | 15 |
| Daylight | 13.7 h | 12.4 h | 11.2 h |
Highs change by -8°F from August and -13°F into October.
Nearby alternatives in September
- Warmer: Greeley, CO53 mi · high 82°F · 6 wet days
- Cooler: Estes Park, CO52 mi · high 70°F · 9 wet days
How Lakewood ranks in September
- Normal high252nd warmest of 378 cities; 10th of 17 in Colorado
- Wet days145th driest of 378
- Comfortable days130th most of 342
What to pack for Lakewood in September
- Layers – afternoons near 76°F but nights near 49°F
Heating and cooling
September has 138 heating degree days and 59 cooling degree days (base 65°F), 3% of the year's total heating and cooling demand.
Questions
How hot is Lakewood in September?
The normal high is 76°F and the normal low is 49°F. From 1991 to 2020 the hottest September reading was 96°F (most recently on September 6, 2020).
Does it rain a lot in Lakewood in September?
About 7 days in September have at least 0.01 in of precipitation, and the normal total is 1.3 in. The wettest September in 1991-2020 was in 2013 (7.7 in); the driest was in 1992, with no measurable precipitation.
Does it snow in Lakewood in September?
Yes. Normal snowfall in September is 1.0 in.
Is September a good time to visit Lakewood?
September ranks 5th of 12 months on our comfort score for Lakewood (65 out of 100). It has about 12 comfortable days and about 2 days at 90°F or hotter. The best month is May.
Where the numbers come from
- Temperature: Lakewood (USC00054762), 3.7 mi NW of the city center, 5,640 ft (120 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Rain, snowfall, snow depth and frost dates: Wheat Ridge 2 (USC00058995), 5.2 mi NNW of the city center, 5,398 ft (122 ft lower than the city). NOAA normals and daily records, 1991-2020.
- Humidity and wind by hour and cloud cover: Aurora Buckley Fld ANGB (USW00023036), 18 mi E of the city center, 5,663 ft (143 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Buckley Air Force Base (724695-23036), 18 mi E of the city center, 5,663 ft (143 ft higher than the city). Hourly observations, 1991-2020.