November is one of the cooler months of the year in Sarnia, with average highs near 7.7°C and lows around 0.5°C (mean 4.1°C). It is about average for rainfall, averaging 67 mm of rainfall and 81% relative humidity across the period.
November is one of the cooler months of the year in Sarnia. Across 45 years of records, the warmest November in Sarnia was 2016 — when the month averaged 7.5°C — while the coldest was 1995 at 0.7°C. Typical November days reach 7.7°C with nights near 0.5°C. The long-term trend is warming, about 0.4°C per decade.
November is about average for rainfall in Sarnia, averaging 67 mm of rainfall. The wettest November on record was 1985 with 127 mm, while the driest was 2009 at 16 mm.
Relative humidity in Sarnia during November averages 81%. The most humid November was 1985 at 88%, and the least humid was 2025 at 76%.
November receives about 1.7 kWh/m²/day of solar energy in Sarnia. The sunniest November was 2015 at 2.2 kWh/m²/day, and the cloudiest was 1985 at 1.3.
Average wind speed in Sarnia during November is 4.2 m/s. The windiest November was 2005 at 5.3 m/s, while the calmest was 2006 at 3.3 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 3.3°C | 3.4°C | 4.9°C | 3.9°C | 5.2°C | +1.9°C |
| Avg High | 6.9°C | 7.0°C | 8.6°C | 7.5°C | 9.0°C | +2.1°C |
| Avg Low | -0.4°C | -0.1°C | 1.3°C | 0.4°C | 1.5°C | +1.9°C |
| Avg Rain | 85 mm | 60 mm | 62 mm | 70 mm | 52 mm | -33 mm |
November temperatures in Sarnia have risen by about 1.4°C between 1981–1985 and 2021–2025.
November has ranged from a record low of -12.6°C (2019) to a record high of 22.2°C (2024).
Rainfall in November is about average for rainfall, averaging 67 mm, with a wettest year of 127 mm.
A good time to visit Sarnia
November is a good time to visit Sarnia, with days averaging 7.7°C and nights around 0.5°C (mean 4.1°C, cooler than Sarnia's yearly average) and moderate rainfall. July and August are marginally more temperate, but November still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 7.8°C | 4.2°C | 0.6°C | 15.5°C | -4.3°C | 43 mm | 76% | 4.4 m/s | 1.7 |
| 2024 | 10.3°C | 7.0°C | 3.6°C | 22.2°C | -3.8°C | 71 mm | 80% | 4.1 m/s | 1.7 |
| 2023 | 8.1°C | 4.2°C | 0.3°C | 14.5°C | -6.9°C | 50 mm | 78% | 4.1 m/s | 1.9 |
| 2022 | 9.4°C | 5.5°C | 1.6°C | 20.6°C | -6.5°C | 50 mm | 77% | 4.3 m/s | 2 |
| 2021 | 7.4°C | 3.9°C | 0.3°C | 17.9°C | -5.3°C | 47 mm | 80% | 4 m/s | 2 |
| 2020 | 10.7°C | 6.5°C | 2.3°C | 22.0°C | -3.4°C | 49 mm | 78% | 4.5 m/s | 2 |
| 2019 | 4.2°C | 1.1°C | -2.1°C | 11.5°C | -12.6°C | 75 mm | 85% | 4 m/s | 1.6 |
| 2018 | 3.8°C | 1.3°C | -1.2°C | 12.4°C | -7.0°C | 109 mm | 84% | 4.2 m/s | 1.4 |
| 2017 | 7.0°C | 3.5°C | -0.1°C | 15.8°C | -5.4°C | 84 mm | 81% | 4.1 m/s | 1.7 |
| 2016 🔥 | 11.5°C | 7.5°C | 3.4°C | 21.6°C | -3.6°C | 61 mm | 84% | 4.2 m/s | 2.1 |
| 2015 | 11.0°C | 6.7°C | 2.5°C | 21.8°C | -7.5°C | 66 mm | 80% | 4.2 m/s | 2.2 |
| 2014 | 4.9°C | 1.6°C | -1.7°C | 16.4°C | -9.5°C | 56 mm | 79% | 5 m/s | 1.6 |
| 2013 | 6.0°C | 2.6°C | -0.7°C | 16.2°C | -7.5°C | 57 mm | 78% | 5.1 m/s | 1.7 |
| 2012 | 7.6°C | 4.0°C | 0.5°C | 15.5°C | -4.1°C | 21 mm | 79% | 3.4 m/s | 1.8 |
| 2011 | 9.8°C | 6.1°C | 2.4°C | 16.5°C | -4.7°C | 98 mm | 83% | 4.7 m/s | 1.9 |
| 2010 | 9.2°C | 5.0°C | 0.9°C | 15.0°C | -4.3°C | 72 mm | 79% | 4 m/s | 2 |
| 2009 | 10.4°C | 6.7°C | 3.1°C | 17.2°C | -0.5°C | 16 mm | 84% | 3.5 m/s | 1.9 |
| 2008 | 6.4°C | 3.4°C | 0.3°C | 18.7°C | -6.7°C | 88 mm | 83% | 4.3 m/s | 1.6 |
| 2007 | 7.0°C | 3.4°C | -0.2°C | 14.6°C | -8.6°C | 43 mm | 79% | 4.2 m/s | 1.7 |
| 2006 | 9.2°C | 5.6°C | 2.0°C | 17.6°C | -3.2°C | 58 mm | 84% | 3.3 m/s | 1.7 |
| 2005 | 9.8°C | 5.5°C | 1.1°C | 19.8°C | -8.6°C | 80 mm | 77% | 5.3 m/s | 1.8 |
| 2004 | 9.0°C | 5.4°C | 1.9°C | 15.2°C | -4.4°C | 57 mm | 79% | 3.8 m/s | 1.7 |
| 2003 | 9.2°C | 5.4°C | 1.7°C | 17.9°C | -5.0°C | 104 mm | 82% | 4.2 m/s | 1.6 |
| 2002 | 6.3°C | 3.0°C | -0.3°C | 17.4°C | -5.3°C | 57 mm | 80% | 4.3 m/s | 1.5 |
| 2001 | 11.1°C | 6.8°C | 2.6°C | 16.7°C | -2.2°C | 76 mm | 83% | 3.9 m/s | 2 |
| 2000 | 7.4°C | 4.2°C | 0.9°C | 18.0°C | -6.1°C | 45 mm | 81% | 4.1 m/s | 1.5 |
| 1999 | 10.4°C | 6.2°C | 2.0°C | 21.4°C | -3.7°C | 50 mm | 76% | 4.4 m/s | 1.9 |
| 1998 | 9.5°C | 5.8°C | 2.2°C | 17.2°C | -2.3°C | 43 mm | 78% | 4.5 m/s | 1.6 |
| 1997 | 6.1°C | 3.0°C | -0.1°C | 12.8°C | -5.5°C | 21 mm | 83% | 4 m/s | 1.7 |
| 1996 | 3.9°C | 0.9°C | -2.0°C | 13.8°C | -6.9°C | 48 mm | 82% | 3.8 m/s | 1.9 |
| 1995 ❄️ | 4.2°C | 0.7°C | -2.7°C | 17.5°C | -8.1°C | 91 mm | 81% | 4.2 m/s | 1.9 |
| 1994 | 9.5°C | 5.6°C | 1.6°C | 17.0°C | -5.6°C | 69 mm | 80% | 4.8 m/s | 1.6 |
| 1993 | 6.1°C | 2.4°C | -1.3°C | 13.0°C | -7.2°C | 35 mm | 83% | 3.8 m/s | 1.7 |
| 1992 | 5.8°C | 2.9°C | 0.0°C | 14.4°C | -4.3°C | 104 mm | 86% | 4 m/s | 1.5 |
| 1991 | 5.7°C | 2.2°C | -1.3°C | 16.3°C | -7.9°C | 66 mm | 79% | 4.2 m/s | 1.7 |
| 1990 | 9.0°C | 4.6°C | 0.2°C | 19.9°C | -5.1°C | 77 mm | 82% | 4.5 m/s | 1.7 |
| 1989 | 5.4°C | 1.9°C | -1.7°C | 15.9°C | -7.9°C | 75 mm | 77% | 4.8 m/s | 1.6 |
| 1988 | 7.9°C | 4.1°C | 0.3°C | 14.7°C | -4.4°C | 113 mm | 83% | 4.5 m/s | 1.4 |
| 1987 | 7.8°C | 4.0°C | 0.2°C | 19.4°C | -7.2°C | 80 mm | 82% | 4.2 m/s | 1.8 |
| 1986 | 5.0°C | 1.3°C | -2.3°C | 16.7°C | -10.8°C | 30 mm | 82% | 3.7 m/s | 1.9 |
| 1985 🌧️ | 6.8°C | 3.6°C | 0.4°C | 15.9°C | -6.4°C | 127 mm | 88% | 3.8 m/s | 1.3 |
| 1984 | 6.8°C | 3.0°C | -0.8°C | 17.2°C | -6.6°C | 89 mm | 81% | 4.2 m/s | 1.8 |
| 1983 | 7.3°C | 3.7°C | 0.1°C | 16.1°C | -6.5°C | 100 mm | 83% | 4.4 m/s | — |
| 1982 | 7.9°C | 4.2°C | 0.5°C | 19.9°C | -6.3°C | 109 mm | 82% | 3.9 m/s | — |
| 1981 | 7.6°C | 3.6°C | -0.3°C | 16.0°C | -6.2°C | 40 mm | 82% | 3.4 m/s | — |
Actual recorded November data for each year, 1981–2025 — sourced from NASA POWER.
The average high in November is around 7.7°C with lows near 0.5°C (mean 4.1°C), based on 45 years of NASA POWER data.
November averages 67 mm of rainfall in Sarnia, about average for rainfall. The wettest on record was 127 mm in 1985.
The hottest November reached 22.2°C in 2024. The coldest dipped to -12.6°C in 2019.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average November temperatures have risen by about 1.4°C. Daytime highs moved from 7.3°C to 8.6°C and overnight lows from 0°C to 1.3°C over the same span.
November is one of the cooler months of the year in Sarnia and about average for rainfall, so plan for around 7.7°C daytime highs and 0.5°C at night.
Not quite — November is the 5th coolest month in Sarnia, averaging 4.1°C.
For November in Sarnia, pack warm layers and a jacket for chilly mornings, with typical highs of 7.7°C and lows of 0.5°C. Bring an umbrella or light rain jacket too.
Relative humidity in November averages 81% — quite humid.
Average wind speed in November is 4.2 m/s. The windiest November on record averaged 5.3 m/s (2005).
The wettest November on record was 1985 with 127 mm. On average, November sees 67 mm.
All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.
Explore how the weather in Sarnia behaves each November, based on 45 years of NASA POWER climate data from 1981 to 2025. This page breaks down average temperatures, rainfall, humidity, wind and solar radiation for November specifically, along with year-by-year records and how the month has changed over the decades.
