Sacramento, CA weather in September
Sacramento is hot and dry in September: highs average 89°F and nights drop to about 59°F. There are about 1 day with rain.
- Normal high
- 89°F
- Normal low
- 59°F
- Wet days
- 1
- 0.1 in total
- Muggy days
- 0
- dew point 65°F+
How September changes from start to finish
| September 1 | September 30 | |
|---|---|---|
| Normal high | 92°F | 85°F |
| Normal low | 60°F | 57°F |
| Chance of a wet day | 2% | 5% |
| Sunrise / sunset | 6:35 am / 7:36 pm | 7:01 am / 6:50 pm |
| Daylight | 13.0 h | 11.8 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 am57°Fdew point 51°F
- 9 am69°Fdew point 52°F
- Noon81°Fdew point 51°F
- 3 pm87°Fdew point 48°F
- 6 pm79°Fdew point 51°F
- 9 pm67°Fdew point 52°F
NOAA hourly normals (local standard time) from Sacramento Executive Airport (5 mi away); average wind 6 mph; clear or few clouds in 93% of daytime hours, mostly cloudy or overcast in 5%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F4 of 30
- Hot dayshigh 90°F or more16 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 0.1 in; a dry September brings about 0.0 in and a wet one about 0.1 in (25th and 75th percentiles). Days with half an inch or more are rare.
How September varies from year to year
- Warmest September, 1991-20201991: average high 93°F
- Coolest September2007: average high 83°F
- Wettest September2004: 1.9 in
- Driest September1992: no measurable precipitation
- Highest reading109°F (September 6, 2020)
- Lowest reading46°F (September 29, 2019)
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 | 94°F | 89°F | 79°F |
| Normal low | 61°F | 59°F | 53°F |
| Wet days | 0 | 1 | 3 |
| Comfortable days | 1 | 4 | 16 |
| Daylight | 13.6 h | 12.4 h | 11.2 h |
Highs change by -5°F from August and -10°F into October.
Nearby alternatives in September
- Cooler: Concord, CA51 mi · high 84°F · 1 wet day
How Sacramento ranks in September
- Normal high65th warmest of 378 cities; 22nd of 60 in California
- Wet days34th driest of 378
- Comfortable days216th most of 342
What to pack for Sacramento in September
- Light, breathable clothing – highs near 89°F
- Layers – afternoons near 89°F but nights near 59°F
Heating and cooling
September has 3 heating degree days and 275 cooling degree days (base 65°F), 7% of the year's total heating and cooling demand.
Questions
How hot is Sacramento in September?
The normal high is 89°F and the normal low is 59°F. From 1991 to 2020 the hottest September reading was 109°F (September 6, 2020).
Does it rain a lot in Sacramento in September?
About 1 days in September have at least 0.01 in of precipitation, and the normal total is 0.2 in. The wettest September in 1991-2020 was in 2004 (1.9 in); the driest was in 1992, with no measurable precipitation.
Is September a good time to visit Sacramento?
September ranks 8th of 12 months on our comfort score for Sacramento (48 out of 100). It has about 4 comfortable days and about 16 days at 90°F or hotter. The best month is April.
Where the numbers come from
- Temperature, rain, snowfall and frost dates: Sacramento 5 Ese (USW00023271), 4.6 mi ESE of the city center, 38 ft . NOAA normals and daily records, 1991-2020.
- Snow depth: Nicolaus #2 (USC00046194), 24 mi N of the city center, 43 ft . NOAA normals and daily records, 1991-2020.
- Humidity and wind by hour and cloud cover: Sacramento Executive Airport (USW00023232), 5.2 mi S of the city center, 15 ft . NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Sacramento Executive Airport (724830-23232), 5.2 mi S of the city center, 19 ft . Hourly observations, 1991-2020.