Stockton Weather in September
Average highs run from 88°F on September 1 to 78°F on September 30, and lows from 58°F to 47°F. Normal precipitation for the month is 2.29 in over about 5 wet days.
September day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
September at a glance
- Average high
- 84°F
- Average low
- 53°F
- Precipitation
- 2.29 in
- Record high
- 105°FSep 7, 1998
- Record low
- 32°FSep 25, 2000
- Chance of a freeze
- 17%
- Days of 90°F or more
- 9.5
- Daylight
- 13 h 02 min to 11 h 49 min
- Cloud cover
- 43%
- Humidity
- 57%
- Dew point
- 51°F
- Wind
- 11.2 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| Sep 1 | 88°F | 58°F | 97°F 1999 | 53°F 2005 | 18% | 0% |
| Sep 2 | 88°F | 58°F | 99°F 2002 | 51°F 2006 | 18% | 0% |
| Sep 3 | 88°F | 58°F | 103°F 2000 | 45°F 2006 | 18% | 0% |
| Sep 4 | 88°F | 57°F | 100°F 1998 | 43°F 2006 | 18% | 0% |
| Sep 5 | 87°F | 57°F | 98°F 2002 | 44°F 2006 | 18% | 0% |
| Sep 6 | 87°F | 57°F | 98°F 1998 | 47°F 2006 | 18% | 0% |
| Sep 7 | 87°F | 56°F | 105°F 1998 | 50°F 2008 | 18% | 0% |
| Sep 8 | 86°F | 56°F | 97°F 2002 | 49°F 2008 | 18% | 0% |
| Sep 9 | 86°F | 56°F | 98°F 2000 | 44°F 2001 | 18% | 0% |
| Sep 10 | 86°F | 55°F | 99°F 2000 | 44°F 2001 | 18% | 0% |
| Sep 11 | 85°F | 55°F | 98°F 2000 | 44°F 2007 | 18% | 0% |
| Sep 12 | 85°F | 55°F | 94°F 1998 | 49°F 2006 | 18% | 0% |
| Sep 13 | 85°F | 54°F | 98°F 2004 | 40°F 1999 | 18% | 0% |
| Sep 14 | 84°F | 54°F | 101°F 2000 | 40°F 1999 | 17% | 0% |
| Sep 15 | 84°F | 53°F | 98°F 2004 | 40°F 2008 | 17% | 0% |
| Sep 16 | 84°F | 53°F | 92°F 1997 | 40°F 2008 | 17% | 0% |
| Sep 17 | 83°F | 53°F | 90°F 2000 | 40°F 2008 | 17% | 0% |
| Sep 18 | 83°F | 52°F | 100°F 2003 | 42°F 2006 | 17% | 0% |
| Sep 19 | 83°F | 52°F | 102°F 2004 | 36°F 2006 | 17% | 0% |
| Sep 20 | 82°F | 51°F | 98°F 1998 | 38°F 2006 | 17% | 0% |
| Sep 21 | 82°F | 51°F | 90°F 2005 | 37°F 1999 | 17% | 0% |
| Sep 22 | 81°F | 51°F | 102°F 2005 | 37°F 1999 | 17% | 0% |
| Sep 23 | 81°F | 50°F | 91°F 2001 | 40°F 1999 | 16% | 0% |
| Sep 24 | 80°F | 50°F | 90°F 1999 | 41°F 2000 | 16% | 0% |
| Sep 25 | 80°F | 49°F | 92°F 2005 | 32°F 2000 | 16% | 0% |
| Sep 26 | 79°F | 49°F | 101°F 1998 | 33°F 2000 | 16% | 0% |
| Sep 27 | 79°F | 48°F | 94°F 1998 | 41°F 2000 | 16% | 0% |
| Sep 28 | 79°F | 48°F | 90°F 1997 | 37°F 2006 | 16% | 0% |
| Sep 29 | 78°F | 47°F | 93°F 2008 | 35°F 2005 | 15% | 0% |
| Sep 30 | 78°F | 47°F | 91°F 2000 | 36°F 1999 | 15% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (CDT).
- September 1
- sunrise 7:06 AM, sunset 8:08 PM
- September 30
- sunrise 7:32 AM, sunset 7:21 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00148648 (Webster Dam), public domain. Records: NOAA GHCN-Daily, station USC00146378, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.