Santa Maria weather in September: Santa Maria, California: normal highs, lows, rain and records for September
Santa Maria in September has a normal high of 75°F and a normal low of 54°F, a daily mean of 64°F, holding near 75°F all month. Measurable precipitation falls on 1 days in a normal September, 0.07 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 24°C and low of 12°C, 2 mm of precipitation in September.
- NOAA stationSanta Maria Public Airport
- Station IDUSW00023273
- Location34.90°N 120.45°W
- Elevation242 ft (74 m)
- Population111,346
- Jan 65° 41°
- Feb 65° 43°
- Mar 66° 44°
- Apr 68° 45°
- May 69° 49°
- Jun 71° 52°
- Jul 73° 55°
- Aug 74° 55°
- Sep 75° 54°
- Oct 75° 50°
- Nov 70° 44°
- Dec 64° 40°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Santa Maria in September?
The normal high is 75°F and the normal low 54°F, for a daily mean of 64.3°F. September is 0.2°F cooler than August and 2.1°F warmer than October. September is the 2nd warmest month of the year in Santa Maria and the 9th wettest. From one year to the next September's mean temperature typically moves about 2.3°F either way (NOAA's standard deviation), so roughly two Septembers in three average between 62°F and 67°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 4%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 75°F | 55°F | 2% | 0% |
| September 8 | 75°F | 54°F | 2% | 1% |
| September 15 | 75°F | 54°F | 3% | 1% |
| September 22 | 75°F | 53°F | 3% | 1% |
| September 30 | 75°F | 52°F | 4% | 2% |
Every day of September: normal high, low and chance of precipitation (warmest afternoon September 20, coldest night September 30)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| September 1 | 75°F | 55°F | 2% | 0% | 13 h |
| September 2 | 75°F | 55°F | 2% | 1% | 12 h 50 min |
| September 3 | 75°F | 55°F | 2% | 1% | 12 h 50 min |
| September 4 | 75°F | 55°F | 2% | 1% | 12 h 50 min |
| September 5 | 75°F | 55°F | 2% | 1% | 12 h 50 min |
| September 6 | 75°F | 54°F | 2% | 1% | 12 h 50 min |
| September 7 | 75°F | 54°F | 2% | 1% | 12 h 40 min |
| September 8 | 75°F | 54°F | 2% | 1% | 12 h 40 min |
| September 9 | 75°F | 54°F | 2% | 1% | 12 h 40 min |
| September 10 | 75°F | 54°F | 2% | 1% | 12 h 40 min |
| September 11 | 75°F | 54°F | 2% | 1% | 12 h 40 min |
| September 12 | 75°F | 54°F | 2% | 1% | 12 h 30 min |
| September 13 | 75°F | 54°F | 2% | 1% | 12 h 30 min |
| September 14 | 75°F | 54°F | 2% | 1% | 12 h 30 min |
| September 15 | 75°F | 54°F | 3% | 1% | 12 h 30 min |
| September 16 | 75°F | 54°F | 3% | 1% | 12 h 20 min |
| September 17 | 75°F | 54°F | 3% | 1% | 12 h 20 min |
| September 18 | 75°F | 54°F | 3% | 1% | 12 h 20 min |
| September 19 | 75°F | 54°F | 3% | 1% | 12 h 20 min |
| September 20 | 75°F | 54°F | 3% | 1% | 12 h 20 min |
| September 21 | 75°F | 53°F | 3% | 1% | 12 h 10 min |
| September 22 | 75°F | 53°F | 3% | 1% | 12 h 10 min |
| September 23 | 75°F | 53°F | 3% | 1% | 12 h 10 min |
| September 24 | 75°F | 53°F | 4% | 1% | 12 h 10 min |
| September 25 | 75°F | 53°F | 4% | 1% | 12 h 10 min |
| September 26 | 75°F | 53°F | 4% | 1% | 12 h |
| September 27 | 75°F | 53°F | 4% | 1% | 12 h |
| September 28 | 75°F | 53°F | 4% | 1% | 12 h |
| September 29 | 75°F | 52°F | 4% | 1% | 12 h |
| September 30 | 75°F | 52°F | 4% | 2% | 11 h 50 min |
- Normal high
- 75°FSeptember average
- Normal low
- 54°FSeptember average
- Precipitation
- 0.07 inmonth total
- Days with precipitation
- 10.01 inch or more
- Days at 90°F or more
- 1
- Daylight
- 13 h to 11 h 50 minSeptember 1 to September 30
- Days at 70°F or more
- 25
- Days at 80°F or more
- 6
- Sunshine
- 83%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00023273; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Santa Maria in September?
On a given September day the chance of 0.01 inch or more is 3% on average, highest around September 30 (4%). In all, 0.07 in falls on 1 days of a normal September.
In a normal September in Santa Maria, 1 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00023273.
How humid and windy is Santa Maria in September?
At 3 p.m. the normal temperature is 71°F with 53% relative humidity and a dew point of 53°F; at 6 a.m. it is 54°F with 85% humidity. The wind averages 5.9 mph, most often from the west-northwest in the afternoon.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 54°F | 50°F | 85% | 2.6 mph | – |
| 9 a.m. | 65°F | 51°F | 59% | 4.0 mph | 58% |
| noon | 74°F | 52°F | 46% | 11.1 mph | 74% |
| 3 p.m. | 71°F | 53°F | 53% | 14.1 mph | 78% |
| 6 p.m. | 62°F | 53°F | 72% | 7.6 mph | 68% |
| 9 p.m. | 58°F | 52°F | 81% | 2.8 mph | 72% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00023273. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for September in Santa Maria?
The warmest September temperature on Santa Maria's official record (since 1906) is 106°F, on September 22, 1939; the coldest is 32°F, on September 22, 1918. The wettest September brought 3.05 in (1976).
The September mean against the 1991-2020 normal of 64.3°F: 2021 63.4°F (−0.9), 2022 67.5°F (+3.2), 2023 63.6°F (−0.7), 2024 63.4°F (−0.9), 2025 66.6°F (+2.3), 2026 66.5°F (+2.2). 3 of 6 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 63.4°F | −0.9°F | 0.01 in |
| 2022 | 67.5°F | +3.2°F | 1.84 in |
| 2023 | 63.6°F | −0.7°F | 0.12 in |
| 2024 | 63.4°F | −0.9°F | 0.04 in |
| 2025 | 66.6°F | +2.3°F | 0.73 in |
| 2026 | 66.5°F | +2.2°F | 0.00 in |
Source: records: ACIS, NWS threaded record SMXthr; recent months: ACIS, station USW00023273. Records and recent months use complete months only.
How does September in Santa Maria compare across California?
Across the 219 places PlainClimate covers in California, September normal highs run from 64°F in Eureka to 104°F in Brawley; Santa Maria's is 75°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Santa Maria in August74°F by day, 55°F at night
- Santa Maria in October75°F by day, 50°F at night
- Santa Maria through the yearEvery month, frost dates, records and recent years
- California in SeptemberThe statewide normal and the warmest and coolest places
- Brawley: California's warmest Septembernormal high 104°F