Santa Clarita, CA weather in September
In September, Santa Clarita sees highs around 94°F and lows around 59°F: hot and dry. There are about 1 day with rain. Plan outdoor time for mornings and evenings.
- Normal high
- 94°F
- Normal low
- 59°F
- Wet days
- 1
- 0.09 in total
- Muggy days
- 0
- dew point 65°F+
How September changes from start to finish
| September 1 | September 30 | |
|---|---|---|
| Normal high | 97°F | 90°F |
| Normal low | 60°F | 56°F |
| Chance of a wet day | 1% | 3% |
| Sunrise / sunset | 6:27 am / 7:20 pm | 6:48 am / 6:40 pm |
| Daylight | 12.9 h | 11.9 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 am64°Fdew point 53°F
- 9 am74°Fdew point 54°F
- Noon84°Fdew point 54°F
- 3 pm85°Fdew point 53°F
- 6 pm77°Fdew point 55°F
- 9 pm71°Fdew point 56°F
NOAA hourly normals (local standard time) from Burbank Glendale Pasadena Airport (17 mi away); average wind 5 mph; clear or few clouds in 87% of daytime hours, mostly cloudy or overcast in 11%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F3 of 30
- Hot dayshigh 90°F or more22 of 30
- Muggy daysdaily mean dew point 65°F or more0 of 30
- Wet daysat least 0.01 in of rain or melted snow1 of 30
- Notable rainat least 0.10 in0 of 30
- Freezing nightslow 32°F or below0 of 30
Average days per September, counted from daily records for each year 1991-2020.
Rain in September
Normal precipitation is 0.09 in; a dry September brings about 0.0 in and a wet one about 0.06 in (25th and 75th percentiles). Days with half an inch or more are rare.
How September varies from year to year
- Warmest September, 1991-20202020: average high 99°F
- Coolest September1998: average high 87°F
- Wettest September2007: 1.1 in
- Driest September1991: no measurable precipitation
- Highest reading120°F (September 6, 2020)
- Lowest reading44°F (September 21, 2007)
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 | 97°F | 94°F | 85°F |
| Normal low | 61°F | 59°F | 53°F |
| Wet days | 0 | 1 | 2 |
| Comfortable days | 0 | 3 | 9 |
| Daylight | 13.4 h | 12.4 h | 11.3 h |
Highs change by -3°F from August and -9°F into October.
Nearby alternatives in September
- Warmer: Palm Springs, CA121 mi · high 102°F · 1 wet day
- Cooler: Burbank, CA20 mi · high 87°F · 1 wet day
How Santa Clarita ranks in September
- Normal high16th warmest of 378 cities; 3rd of 60 in California
- Wet days10th driest of 378
- Comfortable days247th most of 342
What to pack for Santa Clarita in September
- Light, breathable clothing – highs near 94°F
- Layers – afternoons near 94°F but nights near 59°F
Heating and cooling
September has 2 heating degree days and 338 cooling degree days (base 65°F), 11% of the year's total heating and cooling demand.
Questions
How hot is Santa Clarita in September?
The normal high is 94°F and the normal low is 59°F. From 1991 to 2020 the hottest September reading was 120°F (September 6, 2020).
Does it rain a lot in Santa Clarita in September?
About 1 days in September have at least 0.01 in of precipitation, and the normal total is 0.09 in. The wettest September in 1991-2020 was in 2007 (1.1 in); the driest was in 1991, with no measurable precipitation.
Where the numbers come from
- Temperature and rain: Woodland Hills Pierce College (USC00049785), 15 mi S of the city center, 790 ft (423 ft lower than the city). NOAA normals and daily records, 1991-2020.
- Snowfall and snow depth: Pacoima Dam Fc33a-E (USC00046602), 9.2 mi ESE of the city center, 1,550 ft (337 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Frost dates: Newhall 5NW (USC00046161), 2.9 mi W of the city center, 1,765 ft (552 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Humidity and wind by hour and cloud cover: Burbank Glendale Pasadena Airport (USW00023152), 17 mi SE of the city center, 741 ft (472 ft lower than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Van Nuys Airport (722886-23130), 13 mi SSE of the city center, 785 ft (428 ft lower than the city). Hourly observations, 1991-2020.