Santa Maria, CA weather in September
Expect mild, dry weather in Santa Maria in September, with highs near 75°F and lows near 54°F. Rain falls on about 1 day. Great for outdoor plans.
- Normal high
- 75°F
- Normal low
- 54°F
- Wet days
- 1
- 0.07 in total
- Muggy days
- 0
- dew point 65°F+
How September changes from start to finish
| September 1 | September 30 | |
|---|---|---|
| Normal high | 75°F | 75°F |
| Normal low | 55°F | 52°F |
| Chance of a wet day | 2% | 4% |
| Sunrise / sunset | 6:34 am / 7:28 pm | 6:55 am / 6:47 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 am55°Fdew point 52°F
- 9 am64°Fdew point 53°F
- Noon73°Fdew point 55°F
- 3 pm71°Fdew point 55°F
- 6 pm62°Fdew point 54°F
- 9 pm58°Fdew point 54°F
NOAA hourly normals (local standard time) from Santa Maria Public Airport (4 mi away); average wind 6 mph; clear or few clouds in 69% of daytime hours, mostly cloudy or overcast in 21%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F24 of 30
- Hot dayshigh 90°F or more1 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 0.07 in; a dry September brings about 0.0 in and a wet one about 0.03 in (25th and 75th percentiles). Days with half an inch or more are rare.
How September varies from year to year
- Warmest September, 1991-20202015: average high 84°F
- Coolest September1999: average high 71°F
- Wettest September1997: 0.7 in
- Driest September1991: no measurable precipitation
- Highest reading106°F (September 2, 2017)
- Lowest reading42°F (September 30, 2009)
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 | 74°F | 75°F | 75°F |
| Normal low | 55°F | 54°F | 50°F |
| Wet days | 0 | 1 | 3 |
| Comfortable days | 28 | 24 | 21 |
| Daylight | 13.4 h | 12.4 h | 11.3 h |
Highs change by +1°F from August and 0°F into October.
Nearby alternatives in September
- Warmer: Solvang, CA30 mi · high 91°F · 1 wet day
How Santa Maria ranks in September
- Normal high283rd warmest of 378 cities; 50th of 60 in California
- Wet days22nd driest of 378
- Comfortable days2nd most of 342
Heating and cooling
September has 59 heating degree days and 40 cooling degree days (base 65°F), 4% of the year's total heating and cooling demand.
Questions
How hot is Santa Maria in September?
The normal high is 75°F and the normal low is 54°F. From 1991 to 2020 the hottest September reading was 106°F (September 2, 2017).
Does it rain a lot in Santa Maria in September?
About 1 days in September have at least 0.01 in of precipitation, and the normal total is 0.07 in. The wettest September in 1991-2020 was in 1997 (0.7 in); the driest was in 1991, with no measurable precipitation.
Is September a good time to visit Santa Maria?
September ranks 5th of 12 months on our comfort score for Santa Maria (84 out of 100). It has about 24 comfortable days and about 1 day at 90°F or hotter. The best months are June, July and August.
Where the numbers come from
- Temperature, rain, frost dates and humidity and wind by hour: Santa Maria Public Airport (USW00023273), 3.8 mi S of the city center, 242 ft . NOAA normals and daily records, 1991-2020.
- Snowfall and snow depth: Lompoc (USC00045064), 21 mi S of the city center, 75 ft (143 ft lower than the city). NOAA normals and daily records, 1991-2020.
- Cloud cover: Santa Barbara Muni Airport (USW00023190), 50 mi SE of the city center, 9 ft (209 ft lower than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Santa Maria Pub/Capt G A Hancock Airport (723940-23273), 4.2 mi SSW of the city center, 243 ft . Hourly observations, 1991-2020.