Sarnia Weather in January
Average highs run from -1°C on January 1 to -2°C on January 31, and lows from -6°C to -9°C. Normal precipitation for the month is 56 mm over about 12 wet days.
January day by day
The normal high and low for each date, in °C.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
January at a glance
- Average high
- -2°C
- Average low
- -8°C
- Precipitation
- 56 mm
- Reanalysis high
- 13°CJan 8, 2008
- Reanalysis low
- -27°CJan 19, 1994
- Daylight
- 9 h 05 min to 9 h 55 min
- Cloud cover
- 77%
- Humidity
- 88%
- Dew point
- -7°C
- Wind
- 22.3 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 | Reanalysis high | Reanalysis low | Chance wet |
|---|---|---|---|---|---|
| Jan 1 | -1°C | -6°C | 7°C 2007 | -20°C 2018 | 41% |
| Jan 2 | -1°C | -7°C | 10°C 2000 | -17°C 2018 | 41% |
| Jan 3 | -1°C | -7°C | 9°C 2004 | -17°C 2018 | 42% |
| Jan 4 | -1°C | -7°C | 11°C 1997 | -18°C 2018 | 42% |
| Jan 5 | -1°C | -7°C | 10°C 1997 | -22°C 2018 | 43% |
| Jan 6 | -1°C | -7°C | 9°C 1998 | -23°C 2018 | 44% |
| Jan 7 | -1°C | -7°C | 13°C 2008 | -25°C 2018 | 44% |
| Jan 8 | -1°C | -7°C | 13°C 2008 | -18°C 2014 | 43% |
| Jan 9 | -1°C | -7°C | 11°C 2008 | -20°C 2014 | 43% |
| Jan 10 | -1°C | -8°C | 6°C 2000 | -21°C 1999 | 42% |
| Jan 11 | -1°C | -8°C | 9°C 2020 | -19°C 1999 | 41% |
| Jan 12 | -2°C | -8°C | 8°C 2005 | -14°C 1999 | 40% |
| Jan 13 | -2°C | -8°C | 12°C 2005 | -21°C 1999 | 38% |
| Jan 14 | -2°C | -8°C | 11°C 1995 | -22°C 1999 | 38% |
| Jan 15 | -2°C | -8°C | 7°C 1995 | -20°C 1994 | 39% |
| Jan 16 | -2°C | -8°C | 3°C 2012 | -23°C 1994 | 38% |
| Jan 17 | -2°C | -9°C | 6°C 2012 | -20°C 2009 | 38% |
| Jan 18 | -2°C | -9°C | 10°C 1996 | -26°C 1994 | 37% |
| Jan 19 | -2°C | -9°C | 8°C 1996 | -27°C 1994 | 36% |
| Jan 20 | -2°C | -9°C | 6°C 2006 | -21°C 1994 | 35% |
| Jan 21 | -2°C | -9°C | 8°C 2017 | -19°C 2014 | 34% |
| Jan 22 | -2°C | -9°C | 8°C 2017 | -22°C 2014 | 33% |
| Jan 23 | -2°C | -9°C | 10°C 1999 | -22°C 2014 | 33% |
| Jan 24 | -2°C | -9°C | 4°C 2010 | -24°C 2014 | 32% |
| Jan 25 | -2°C | -9°C | 5°C 2017 | -20°C 2014 | 31% |
| Jan 26 | -2°C | -9°C | 7°C 2002 | -20°C 2014 | 32% |
| Jan 27 | -2°C | -9°C | 9°C 2002 | -23°C 2014 | 32% |
| Jan 28 | -2°C | -9°C | 9°C 2002 | -23°C 2014 | 33% |
| Jan 29 | -2°C | -9°C | 9°C 2006 | -19°C 2014 | 33% |
| Jan 30 | -2°C | -9°C | 11°C 2013 | -21°C 2019 | 32% |
| Jan 31 | -2°C | -9°C | 7°C 2016 | -21°C 2019 | 32% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (EST).
- January 1
- sunrise 8:01 AM, sunset 5:06 PM
- January 31
- sunrise 7:46 AM, sunset 5:41 PM
Other months
Sources
Cloud, humidity, wind and sunshine, and temperature and precipitation: 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.