Sarnia Weather in April
Average highs run from 9°C on April 1 to 15°C on April 30, and lows from -1°C to 4°C. Normal precipitation for the month is 75 mm over about 12 wet days.
April day by day
The normal high and low for each date, in °C.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
April at a glance
- Average high
- 12°C
- Average low
- 1°C
- Precipitation
- 75 mm
- Reanalysis high
- 25°CApr 15, 2003
- Reanalysis low
- -10°CApr 6, 2003
- Daylight
- 12 h 44 min to 14 h 05 min
- Cloud cover
- 69%
- Humidity
- 75%
- Dew point
- 2°C
- Wind
- 20.5 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 |
|---|---|---|---|---|---|
| Apr 1 | 9°C | -1°C | 22°C 2010 | -8°C 2019 | 40% |
| Apr 2 | 9°C | -1°C | 23°C 2010 | -6°C 2018 | 40% |
| Apr 3 | 9°C | -1°C | 22°C 1999 | -7°C 1993 | 40% |
| Apr 4 | 9°C | 0°C | 17°C 1997 | -7°C 2016 | 41% |
| Apr 5 | 10°C | 0°C | 20°C 2010 | -7°C 2003 | 42% |
| Apr 6 | 10°C | 0°C | 22°C 2005 | -10°C 2003 | 42% |
| Apr 7 | 10°C | 0°C | 23°C 1991 | -6°C 2018 | 41% |
| Apr 8 | 10°C | 0°C | 20°C 1991 | -6°C 2018 | 42% |
| Apr 9 | 11°C | 0°C | 20°C 1991 | -6°C 2003 | 42% |
| Apr 10 | 11°C | 0°C | 23°C 2011 | -5°C 2016 | 42% |
| Apr 11 | 11°C | 1°C | 20°C 2008 | -4°C 1991 | 41% |
| Apr 12 | 11°C | 1°C | 20°C 2001 | -4°C 1992 | 40% |
| Apr 13 | 12°C | 1°C | 21°C 2006 | -5°C 1992 | 42% |
| Apr 14 | 12°C | 1°C | 20°C 2003 | -3°C 2020 | 42% |
| Apr 15 | 12°C | 2°C | 25°C 2003 | -5°C 2014 | 42% |
| Apr 16 | 12°C | 2°C | 24°C 2002 | -6°C 2014 | 43% |
| Apr 17 | 13°C | 2°C | 22°C 2002 | -3°C 2018 | 43% |
| Apr 18 | 13°C | 2°C | 24°C 2004 | -5°C 2018 | 44% |
| Apr 19 | 13°C | 2°C | 25°C 2005 | -3°C 1997 | 45% |
| Apr 20 | 13°C | 2°C | 23°C 2006 | -3°C 2018 | 45% |
| Apr 21 | 13°C | 2°C | 22°C 2014 | -3°C 2020 | 44% |
| Apr 22 | 14°C | 3°C | 23°C 2007 | -4°C 2020 | 45% |
| Apr 23 | 14°C | 3°C | 23°C 2001 | -3°C 2002 | 45% |
| Apr 24 | 14°C | 3°C | 23°C 1994 | -4°C 1996 | 46% |
| Apr 25 | 14°C | 3°C | 24°C 1994 | -1°C 2013 | 47% |
| Apr 26 | 14°C | 3°C | 23°C 2009 | -3°C 1996 | 47% |
| Apr 27 | 14°C | 3°C | 23°C 2009 | -5°C 1996 | 47% |
| Apr 28 | 14°C | 4°C | 22°C 2003 | -2°C 1992 | 45% |
| Apr 29 | 15°C | 4°C | 22°C 2004 | -1°C 2018 | 44% |
| Apr 30 | 15°C | 4°C | 24°C 2010 | -1°C 2008 | 43% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (EDT).
- April 1
- sunrise 7:12 AM, sunset 7:56 PM
- April 30
- sunrise 6:25 AM, sunset 8:30 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.