St. Catharines Weather in October
Average highs run from 19°C on October 1 to 13°C on October 31, and lows from 12°C to 6°C.
October day by day
The normal high and low for each date, and the record, in °C.
- Normal low
- Normal high
- Record high
- Record low
October at a glance
- Average high
- 15°C
- Average low
- 9°C
- Record high
- 28°COct 1, 2019
- Record low
- 0°COct 31, 2020
- Daylight
- 11 h 44 min to 10 h 19 min
- Cloud cover
- 71%
- Humidity
- 77%
- Dew point
- 6°C
- Wind
- 13.0 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 |
|---|---|---|---|---|---|
| Oct 1 | 19°C | 12°C | 28°C 2019 | 6°C 2003 | 50% |
| Oct 2 | 18°C | 12°C | 26°C 2002 | 4°C 2003 | 50% |
| Oct 3 | 19°C | 12°C | 27°C 2023 | 4°C 2003 | 49% |
| Oct 4 | 19°C | 12°C | 28°C 2005 | 7°C 2014 | 48% |
| Oct 5 | 17°C | 11°C | 28°C 2025 | 6°C 1999 | 47% |
| Oct 6 | 18°C | 11°C | 28°C 2025 | 6°C 1999 | 46% |
| Oct 7 | 17°C | 11°C | 27°C 2017 | 5°C 1999 | 45% |
| Oct 8 | 18°C | 10°C | 27°C 2007 | 5°C 2001 | 46% |
| Oct 9 | 18°C | 11°C | 28°C 2018 | 5°C 2000 | 46% |
| Oct 10 | 17°C | 11°C | 28°C 2018 | 5°C 2000 | 47% |
| Oct 11 | 17°C | 10°C | 25°C 2018 | 4°C 2009 | 46% |
| Oct 12 | 16°C | 9°C | 25°C 2021 | 2°C 2006 | 45% |
| Oct 13 | 19°C | 10°C | 26°C 1997 | 2°C 2006 | 46% |
| Oct 14 | 17°C | 10°C | 26°C 2014 | 3°C 2009 | 48% |
| Oct 15 | 16°C | 9°C | 25°C 2017 | 3°C 2009 | 47% |
| Oct 16 | 15°C | 9°C | 24°C 2016 | 3°C 2009 | 48% |
| Oct 17 | 15°C | 9°C | 24°C 2016 | 4°C 2022 | 50% |
| Oct 18 | 15°C | 8°C | 25°C 2016 | 3°C 2015 | 51% |
| Oct 19 | 14°C | 9°C | 24°C 2025 | 3°C 2015 | 52% |
| Oct 20 | 15°C | 9°C | 22°C 2017 | 4°C 2022 | 53% |
| Oct 21 | 14°C | 8°C | 24°C 2007 | 4°C 2018 | 53% |
| Oct 22 | 13°C | 7°C | 25°C 2017 | 2°C 1997 | 52% |
| Oct 23 | 14°C | 7°C | 25°C 2020 | 3°C 2002 | 51% |
| Oct 24 | 13°C | 8°C | 21°C 2001 | 3°C 2002 | 50% |
| Oct 25 | 13°C | 8°C | 21°C 2023 | 2°C 2002 | 50% |
| Oct 26 | 12°C | 7°C | 24°C 2010 | 3°C 2016 | 51% |
| Oct 27 | 12°C | 7°C | 21°C 1998 | 2°C 2016 | 51% |
| Oct 28 | 12°C | 6°C | 22°C 2014 | 2°C 2011 | 49% |
| Oct 29 | 11°C | 6°C | 19°C 2016 | 3°C 2008 | 48% |
| Oct 30 | 12°C | 6°C | 22°C 1999 | 1°C 2002 | 48% |
| Oct 31 | 13°C | 6°C | 20°C 2003 | 0°C 2020 | 46% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (EDT).
- October 1
- sunrise 7:14 AM, sunset 6:58 PM
- October 31
- sunrise 7:51 AM, sunset 6:10 PM
Other months
Sources
Records: NOAA GHCN-Daily, station CA006136699, 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.