Imperial Beach Weather in September
Average highs run from 76°F on September 1 to 74°F on September 30, and lows from 65°F to 60°F. Normal precipitation for the month is 0.14 in.
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
- 75°F
- Average low
- 62°F
- Precipitation
- 0.14 in
- Record high
- 95°FSep 10, 2008
- Record low
- 48°FSep 30, 2013
- Chance of a freeze
- 0%
- Daylight
- 12 h 50 min to 11 h 52 min
- Cloud cover
- 23%
- Humidity
- 58%
- Dew point
- 53°F
- Wind
- 5.8 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation.
| Date | Normal high | Normal low | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| Sep 1 | 76°F | 65°F | 86°F 2017 | 52°F 2010 | |
| Sep 2 | 76°F | 65°F | 90°F 2017 | 57°F 1964 | |
| Sep 3 | 76°F | 64°F | 90°F 2017 | 54°F 1971 | |
| Sep 4 | 76°F | 64°F | 90°F 2022 | 52°F 1971 | |
| Sep 5 | 76°F | 64°F | 85°F 2012 | 56°F 1971 | |
| Sep 6 | 76°F | 64°F | 91°F 2011 | 55°F 1970 | |
| Sep 7 | 76°F | 64°F | 91°F 1958 | 56°F 1973 | |
| Sep 8 | 76°F | 64°F | 89°F 2022 | 55°F 1965 | |
| Sep 9 | 75°F | 64°F | 90°F 2022 | 51°F 2010 | |
| Sep 10 | 75°F | 64°F | 95°F 2008 | 50°F 2010 | |
| Sep 11 | 75°F | 63°F | 89°F 2015 | 56°F 1957 | |
| Sep 12 | 75°F | 63°F | 89°F 2015 | 54°F 1985 | |
| Sep 13 | 75°F | 63°F | 84°F 2015 | 55°F 1966 | |
| Sep 14 | 75°F | 63°F | 85°F 2015 | 52°F 1966 | |
| Sep 15 | 75°F | 63°F | 84°F 1979 | 52°F 2010 | |
| Sep 16 | 75°F | 63°F | 86°F 2014 | 51°F 2010 | |
| Sep 17 | 75°F | 62°F | 84°F 1979 | 51°F 2010 | |
| Sep 18 | 75°F | 62°F | 87°F 1979 | 49°F 2010 | |
| Sep 19 | 75°F | 62°F | 83°F 1979 | 51°F 2010 | |
| Sep 20 | 75°F | 62°F | 91°F 2015 | 52°F 1970 | |
| Sep 21 | 75°F | 62°F | 82°F 1978 | 52°F 2007 | |
| Sep 22 | 75°F | 61°F | 86°F 1978 | 50°F 2010 | |
| Sep 23 | 75°F | 61°F | 88°F 1978 | 51°F 1970 | |
| Sep 24 | 75°F | 61°F | 94°F 1997 | 51°F 2007 | |
| Sep 25 | 74°F | 61°F | 93°F 1978 | 53°F 1945 | |
| Sep 26 | 74°F | 60°F | 86°F 2010 | 51°F 1945 | |
| Sep 27 | 74°F | 60°F | 95°F 1970 | 49°F 2013 | |
| Sep 28 | 74°F | 60°F | 92°F 1970 | 51°F 1945 | |
| Sep 29 | 74°F | 60°F | 85°F 1945 | 52°F 1965 | |
| Sep 30 | 74°F | 60°F | 86°F 1945 | 48°F 2013 |
Chance of rain
Sunrise and sunset
Times for 2026, local time (PDT).
- September 1
- sunrise 6:23 AM, sunset 7:13 PM
- September 30
- sunrise 6:42 AM, sunset 6:34 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00093115 (Imperial Beach Ream Fld Nas), public domain. Records: NOAA GHCN-Daily, station USW00093115, 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.