Castelnau-le-Lez Weather in September
Average highs run from 27°C on September 1 to 23°C on September 30, and lows from 17°C to 13°C. Normal precipitation for the month is 75 mm over about 6 wet days.
September day by day
The normal high and low for each date, and the record, in °C.
- Normal low
- Normal high
- Record high
- Record low
September at a glance
- Average high
- 25°C
- Average low
- 15°C
- Precipitation
- 75 mm
- Record high
- 36°CSep 25, 1983
- Record low
- 4°CSep 21, 1977
- Daylight
- 13 h 12 min to 11 h 46 min
- Cloud cover
- 43%
- Humidity
- 67%
- Dew point
- 13°C
- Wind
- 15.1 km/h
Every day of the month
A wet day has at least 1 mm of precipitation in the reanalysis.
| Date | Normal high | Normal low | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| Sep 1 | 27°C | 17°C | 31°C 2013 | 11°C 1974 | 18% |
| Sep 2 | 27°C | 16°C | 34°C 1999 | 12°C 1986 | 18% |
| Sep 3 | 27°C | 16°C | 33°C 2019 | 11°C 1973 | 18% |
| Sep 4 | 26°C | 17°C | 32°C 2023 | 13°C 1996 | 18% |
| Sep 5 | 27°C | 16°C | 35°C 2016 | 9°C 1974 | 19% |
| Sep 6 | 27°C | 16°C | 35°C 2016 | 10°C 1976 | 20% |
| Sep 7 | 27°C | 17°C | 31°C 1990 | 9°C 1984 | 21% |
| Sep 8 | 27°C | 33°C 2011 | 9°C 1984 | 21% | |
| Sep 9 | 26°C | 15°C | 32°C 1978 | 10°C 1996 | 21% |
| Sep 10 | 26°C | 16°C | 31°C 2016 | 12°C 1996 | 22% |
| Sep 11 | 27°C | 16°C | 33°C 1973 | 6°C 1976 | 23% |
| Sep 12 | 26°C | 16°C | 33°C 2020 | 11°C 1984 | 24% |
| Sep 13 | 26°C | 16°C | 32°C 2011 | 9°C 1983 | 24% |
| Sep 14 | 26°C | 15°C | 31°C 2011 | 10°C 1988 | 24% |
| Sep 15 | 25°C | 14°C | 31°C 2022 | 9°C 1996 | 25% |
| Sep 16 | 25°C | 14°C | 31°C 2000 | 9°C 2024 | 25% |
| Sep 17 | 24°C | 31°C 1978 | 9°C 2008 | 26% | |
| Sep 18 | 25°C | 15°C | 32°C 1991 | 8°C 1977 | 26% |
| Sep 19 | 25°C | 14°C | 31°C 1991 | 7°C 1994 | 26% |
| Sep 20 | 25°C | 14°C | 31°C 2018 | 5°C 1977 | 25% |
| Sep 21 | 24°C | 15°C | 33°C 2018 | 4°C 1977 | 25% |
| Sep 22 | 24°C | 14°C | 30°C 1990 | 8°C 1977 | 25% |
| Sep 23 | 24°C | 14°C | 35°C 2018 | 7°C 1977 | 26% |
| Sep 24 | 24°C | 14°C | 31°C 2018 | 9°C 1973 | 26% |
| Sep 25 | 24°C | 14°C | 36°C 1983 | 8°C 2008 | 26% |
| Sep 26 | 24°C | 31°C 1987 | 8°C 2002 | 26% | |
| Sep 27 | 23°C | 13°C | 30°C 2011 | 7°C 1974 | 25% |
| Sep 28 | 24°C | 13°C | 28°C 2011 | 8°C 2010 | 26% |
| Sep 29 | 23°C | 12°C | 29°C 2023 | 6°C 2024 | 27% |
| Sep 30 | 23°C | 13°C | 31°C 2023 | 7°C 1974 | 26% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+2).
- September 1
- sunrise 7:08 AM, sunset 8:20 PM
- September 30
- sunrise 7:41 AM, sunset 7:27 PM
Other months
Sources
Records: NOAA GHCN-Daily, station FRM00007643, 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.