South Lake Tahoe, CA weather in September
September in South Lake Tahoe: mild and dry. Highs 73°F, lows 35°F, about 2 days with rain. A great month for outdoor plans.
- Normal high
- 73°F
- Normal low
- 35°F
- Wet days
- 2
- 0.5 in total
- Muggy days
- 0
- dew point 65°F+
How September changes from start to finish
| September 1 | September 30 | |
|---|---|---|
| Normal high | 77°F | 68°F |
| Normal low | 38°F | 32°F |
| Chance of a wet day | 6% | 10% |
| Sunrise / sunset | 6:28 am / 7:30 pm | 6:55 am / 6:44 pm |
| Daylight | 13.0 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 (Pacific Time).
A typical September day
- 6 am59°Fdew point 32°F
- 9 am66°Fdew point 34°F
- Noon70°Fdew point 35°F
- 3 pm70°Fdew point 37°F
- 6 pm65°Fdew point 38°F
- 9 pm61°Fdew point 37°F
NOAA hourly normals (local standard time) from Blue Canyon Airport (46 mi away); average wind 5 mph.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F21 of 30
- Hot dayshigh 90°F or more0 of 30
- Muggy daysdaily mean dew point 65°F or more0 of 30
- Wet daysat least 0.01 in of rain or melted snow2 of 30
- Notable rainat least 0.10 in2 of 30
- Freezing nightslow 32°F or below10 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 0.5 in; a dry September brings about 0.02 in and a wet one about 0.7 in (25th and 75th percentiles). Days with half an inch or more are rare. Normal snowfall is 0.1 in.
How September varies from year to year
- Warmest September, 1991-20202020: average high 78°F
- Coolest September2005: average high 69°F
- Wettest September1998: 2.4 in
- Driest September1993: no measurable precipitation
- Highest reading92°F (September 4, 2020)
- Lowest reading22°F (September 16, 2006)
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 | 80°F | 73°F | 62°F |
| Normal low | 41°F | 35°F | 29°F |
| Wet days | 2 | 2 | 4 |
| Comfortable days | 14 | 21 | 15 |
| Daylight | 13.7 h | 12.4 h | 11.2 h |
Highs change by -7°F from August and -11°F into October.
Nearby alternatives in September
- Warmer: Reno, NV42 mi · high 84°F · 2 wet days
How South Lake Tahoe ranks in September
- Normal high312th warmest of 378 cities; 55th of 60 in California
- Wet days65th driest of 378
- Comfortable days15th most of 342
What to pack for South Lake Tahoe in September
- A warm jacket – lows near 35°F, highs near 73°F
- Layers – afternoons near 73°F but nights near 35°F
Heating and cooling
September has 319 heating degree days and 1 cooling degree days (base 65°F), 4% of the year's total heating and cooling demand.
Questions
How hot is South Lake Tahoe in September?
The normal high is 73°F and the normal low is 35°F. From 1991 to 2020 the hottest September reading was 92°F (September 4, 2020).
Does it rain a lot in South Lake Tahoe in September?
About 2 days in September have at least 0.01 in of precipitation, and the normal total is 0.5 in. The wettest September in 1991-2020 was in 1998 (2.4 in); the driest was in 1993, with no measurable precipitation.
Does it snow in South Lake Tahoe in September?
Yes. Normal snowfall in September is 0.1 in.
Is September a good time to visit South Lake Tahoe?
September ranks 2nd of 12 months on our comfort score for South Lake Tahoe (79 out of 100). It has about 21 comfortable days. The best month is June.
Where the numbers come from
- Temperature: South Lake Tahoe Airport (USW00093230), 2.5 mi SSW of the city center, 6,314 ft (76 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Rain: Fallen Leaf (USS0020L10S), 3.5 mi W of the city center, 6,236 ft . NOAA normals and daily records, 1991-2020.
- Snowfall and snow depth: Tahoe City (USC00048758), 18 mi NNW of the city center, 6,230 ft . NOAA normals and daily records, 1991-2020.
- Frost dates: Glenbrook (USC00263205), 10 mi NNE of the city center, 6,350 ft (112 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Humidity and wind by hour: Blue Canyon Airport (USW00023225), 46 mi WNW of the city center, 5,276 ft (962 ft lower than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Lake Tahoe Airport (725847-93230), 2.5 mi SSW of the city center, 6,257 ft . Hourly observations, 1991-2020.
- Not available for this location: cloud cover (no station close enough or similar enough in elevation).