Santa Cruz weather in September: Santa Cruz, California: normal highs, lows, rain and records for September
Santa Cruz in September has a normal high of 77°F and a normal low of 53°F, a daily mean of 65°F, holding near 77°F all month. Measurable precipitation falls on 1 days in a normal September, 0.10 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 25°C and low of 12°C, 3 mm of precipitation in September.
- NOAA stationSanta Cruz
- Station IDUSC00047916
- Location36.99°N 122.00°W
- Elevation70 ft (21 m)
- From the center2 miles
- Population62,581
- Jan 63° 41°
- Feb 64° 43°
- Mar 67° 44°
- Apr 69° 46°
- May 71° 49°
- Jun 74° 52°
- Jul 74° 54°
- Aug 76° 55°
- Sep 77° 53°
- Oct 74° 50°
- Nov 67° 44°
- Dec 62° 41°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Santa Cruz in September?
The normal high is 77°F and the normal low 53°F, for a daily mean of 64.8°F. September is 0.4°F cooler than August and 3.1°F warmer than October. September is the 2nd warmest month of the year in Santa Cruz and the 10th wettest. Across the month the normal high falls 1°F, from 77°F on September 1 to 76°F on September 30. 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 63°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 6%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 77°F | 54°F | 3% | 1% |
| September 8 | 77°F | 54°F | 4% | 1% |
| September 15 | 77°F | 53°F | 4% | 1% |
| September 22 | 77°F | 53°F | 5% | 2% |
| September 30 | 76°F | 52°F | 6% | 3% |
Every day of September: normal high, low and chance of precipitation (warmest afternoon September 4, coldest night September 30)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| September 1 | 77°F | 54°F | 3% | 1% | 13 h |
| September 2 | 77°F | 54°F | 3% | 1% | 13 h |
| September 3 | 77°F | 54°F | 3% | 1% | 13 h |
| September 4 | 77°F | 54°F | 3% | 1% | 12 h 50 min |
| September 5 | 77°F | 54°F | 3% | 1% | 12 h 50 min |
| September 6 | 77°F | 54°F | 3% | 1% | 12 h 50 min |
| September 7 | 77°F | 54°F | 4% | 1% | 12 h 50 min |
| September 8 | 77°F | 54°F | 4% | 1% | 12 h 40 min |
| September 9 | 77°F | 53°F | 4% | 1% | 12 h 40 min |
| September 10 | 77°F | 53°F | 4% | 1% | 12 h 40 min |
| September 11 | 77°F | 53°F | 4% | 1% | 12 h 40 min |
| September 12 | 77°F | 53°F | 4% | 1% | 12 h 40 min |
| September 13 | 77°F | 53°F | 4% | 1% | 12 h 30 min |
| September 14 | 77°F | 53°F | 4% | 1% | 12 h 30 min |
| September 15 | 77°F | 53°F | 4% | 1% | 12 h 30 min |
| September 16 | 77°F | 53°F | 4% | 1% | 12 h 30 min |
| September 17 | 77°F | 53°F | 4% | 1% | 12 h 20 min |
| September 18 | 77°F | 53°F | 4% | 1% | 12 h 20 min |
| September 19 | 77°F | 53°F | 5% | 2% | 12 h 20 min |
| September 20 | 77°F | 53°F | 5% | 2% | 12 h 20 min |
| September 21 | 77°F | 53°F | 5% | 2% | 12 h 10 min |
| September 22 | 77°F | 53°F | 5% | 2% | 12 h 10 min |
| September 23 | 77°F | 52°F | 5% | 2% | 12 h 10 min |
| September 24 | 76°F | 52°F | 5% | 2% | 12 h 10 min |
| September 25 | 76°F | 52°F | 5% | 2% | 12 h 10 min |
| September 26 | 76°F | 52°F | 5% | 2% | 12 h |
| September 27 | 76°F | 52°F | 6% | 2% | 12 h |
| September 28 | 76°F | 52°F | 6% | 2% | 12 h |
| September 29 | 76°F | 52°F | 6% | 3% | 12 h |
| September 30 | 76°F | 52°F | 6% | 3% | 11 h 50 min |
- Normal high
- 77°FSeptember average
- Normal low
- 53°FSeptember average
- Precipitation
- 0.10 inmonth total
- Days with precipitation
- 10.01 inch or more
- Days at 90°F or more
- 2
- Daylight
- 13 h to 11 h 50 minSeptember 1 to September 30
- Days at 70°F or more
- 22
- Days at 80°F or more
- 8
- Sunshine
- 91%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00047916; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Santa Cruz in September?
On a given September day the chance of 0.01 inch or more is 4% on average, highest around September 30 (6%). In all, 0.10 in falls on 1 days of a normal September.
In a normal September in Santa Cruz, 2 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00047916.
What are the records for September in Santa Cruz?
The warmest September temperature on this station's record (since 1893) is 110°F, on September 3, 2017; the coldest is 30°F, on September 13, 1921. The wettest September brought 6.60 in (1918).
The September mean against the 1991-2020 normal of 64.8°F: 2021 65.2°F (+0.4). 1 of 1 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 65.2°F | +0.4°F | 0.00 in |
Source: records: ACIS, station USC00047916; recent months: ACIS, station USC00047916. Records and recent months use complete months only.
How does September in Santa Cruz 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 Cruz's is 77°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Santa Cruz in August76°F by day, 55°F at night
- Santa Cruz in October74°F by day, 50°F at night
- Santa Cruz 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