Sacramento weather in September: Sacramento, California: normal highs, lows, rain and records for September
Sacramento in September has a normal high of 89°F and a normal low of 57°F, a daily mean of 73°F, falling from 91°F on the 1st to 85°F by the 30th. Measurable precipitation falls on 1 days in a normal September, 0.09 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 31°C and low of 14°C, 2 mm of precipitation in September.
- NOAA stationSacramento Airport Asos
- Station IDUSW00023232
- Location38.51°N 121.50°W
- Elevation15 ft (5 m)
- From the center4 miles
- Population535,798
- Jan 56° 39°
- Feb 61° 42°
- Mar 66° 45°
- Apr 72° 47°
- May 80° 52°
- Jun 88° 57°
- Jul 93° 59°
- Aug 92° 59°
- Sep 89° 57°
- Oct 79° 50°
- Nov 65° 43°
- Dec 56° 39°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Sacramento in September?
The normal high is 89°F and the normal low 57°F, for a daily mean of 72.5°F. September is 2.8°F cooler than August and 8.0°F warmer than October. September is the 3rd warmest month of the year in Sacramento and the 10th wettest. Across the month the normal high falls 6°F, from 91°F on September 1 to 85°F on September 30. From one year to the next September's mean temperature typically moves about 1.7°F either way (NOAA's standard deviation), so roughly two Septembers in three average between 71°F and 74°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 5%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 91°F | 58°F | 1% | 1% |
| September 8 | 90°F | 58°F | 2% | 1% |
| September 15 | 89°F | 57°F | 3% | 1% |
| September 22 | 87°F | 56°F | 4% | 2% |
| September 30 | 85°F | 54°F | 5% | 3% |
Every day of September: normal high, low and chance of precipitation (warmest afternoon September 1, coldest night September 30)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| September 1 | 91°F | 58°F | 1% | 1% | 13 h |
| September 2 | 91°F | 58°F | 1% | 1% | 13 h |
| September 3 | 91°F | 58°F | 1% | 1% | 13 h |
| September 4 | 91°F | 58°F | 1% | 1% | 13 h |
| September 5 | 91°F | 58°F | 2% | 1% | 12 h 50 min |
| September 6 | 90°F | 58°F | 2% | 1% | 12 h 50 min |
| September 7 | 90°F | 58°F | 2% | 1% | 12 h 50 min |
| September 8 | 90°F | 58°F | 2% | 1% | 12 h 50 min |
| September 9 | 90°F | 57°F | 2% | 1% | 12 h 40 min |
| September 10 | 90°F | 57°F | 2% | 1% | 12 h 40 min |
| September 11 | 90°F | 57°F | 2% | 1% | 12 h 40 min |
| September 12 | 90°F | 57°F | 2% | 1% | 12 h 40 min |
| September 13 | 89°F | 57°F | 2% | 1% | 12 h 30 min |
| September 14 | 89°F | 57°F | 3% | 1% | 12 h 30 min |
| September 15 | 89°F | 57°F | 3% | 1% | 12 h 30 min |
| September 16 | 89°F | 57°F | 3% | 1% | 12 h 30 min |
| September 17 | 89°F | 57°F | 3% | 1% | 12 h 20 min |
| September 18 | 88°F | 56°F | 3% | 1% | 12 h 20 min |
| September 19 | 88°F | 56°F | 3% | 1% | 12 h 20 min |
| September 20 | 88°F | 56°F | 4% | 1% | 12 h 20 min |
| September 21 | 88°F | 56°F | 4% | 2% | 12 h 20 min |
| September 22 | 87°F | 56°F | 4% | 2% | 12 h 10 min |
| September 23 | 87°F | 56°F | 4% | 2% | 12 h 10 min |
| September 24 | 87°F | 55°F | 4% | 2% | 12 h 10 min |
| September 25 | 87°F | 55°F | 4% | 2% | 12 h 10 min |
| September 26 | 86°F | 55°F | 5% | 2% | 12 h |
| September 27 | 86°F | 55°F | 5% | 2% | 12 h |
| September 28 | 86°F | 55°F | 5% | 2% | 12 h |
| September 29 | 85°F | 54°F | 5% | 2% | 12 h |
| September 30 | 85°F | 54°F | 5% | 3% | 11 h 50 min |
- Normal high
- 89°FSeptember average
- Normal low
- 57°FSeptember average
- Precipitation
- 0.09 inmonth total
- Days with precipitation
- 10.01 inch or more
- Days at 90°F or more
- 14
- Daylight
- 13 h to 11 h 50 minSeptember 1 to September 30
- Days at 70°F or more
- 30
- Days at 80°F or more
- 26
- Sunshine
- 96%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00023232; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Sacramento in September?
On a given September day the chance of 0.01 inch or more is 3% on average, highest around September 30 (5%). In all, 0.09 in falls on 1 days of a normal September.
In a normal September in Sacramento, 14 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00023232.
How humid and windy is Sacramento in September?
At 3 p.m. the normal temperature is 83°F with 28% relative humidity and a dew point of 46°F; at 6 a.m. it is 55°F with 80% humidity. The wind averages 5.3 mph, most often from the west in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 55°F | 49°F | 80% | 3.3 mph | 91% |
| 9 a.m. | 67°F | 50°F | 54% | 5.4 mph | 89% |
| noon | 78°F | 48°F | 35% | 7.1 mph | 88% |
| 3 p.m. | 83°F | 46°F | 28% | 7.5 mph | 90% |
| 6 p.m. | 75°F | 49°F | 41% | 5.8 mph | 92% |
| 9 p.m. | 65°F | 50°F | 60% | 4.8 mph | 94% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00023232. 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 Sacramento?
The warmest September temperature on Sacramento's official record (since 1877) is 114°F, on September 6, 2022; the coldest is 42°F, on September 30, 2007. The wettest September brought 3.62 in (1904).
The September mean against the 1991-2020 normal of 72.5°F: 2021 73.5°F (+1.0), 2022 76.4°F (+3.9), 2023 70.9°F (−1.6), 2024 73.7°F (+1.2), 2025 74.2°F (+1.7), 2026 71.3°F (−1.2). 4 of 6 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 73.5°F | +1.0°F | 0.05 in |
| 2022 | 76.4°F | +3.9°F | 0.28 in |
| 2023 | 70.9°F | −1.6°F | 0.08 in |
| 2024 | 73.7°F | +1.2°F | 0.00 in |
| 2025 | 74.2°F | +1.7°F | 0.02 in |
| 2026 | 71.3°F | −1.2°F | 0.01 in |
Source: records: ACIS, NWS threaded record SACthr; recent months: ACIS, station USW00023232. Records and recent months use complete months only.
How does September in Sacramento 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; Sacramento's is 89°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Sacramento in August92°F by day, 59°F at night
- Sacramento in October79°F by day, 50°F at night
- Sacramento 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