April is close to Sylvan Lake's year-round average, with average highs near 9.7°C and lows around -2.2°C (mean 3.7°C). It is one of the drier months, averaging 35 mm of rainfall and 68% relative humidity across the period.
April is close to Sylvan Lake's year-round average. Across 45 years of records, the warmest April in Sylvan Lake was 2016 — when the month averaged 7.1°C — while the coldest was 1982 at -0.1°C. Typical April days reach 9.7°C with nights near -2.2°C. The long-term April temperature trend is broadly flat.
April is one of the drier months in Sylvan Lake, averaging 35 mm of rainfall. The wettest April on record was 2007 with 80 mm, while the driest was 1994 at 8 mm.
Relative humidity in Sylvan Lake during April averages 68%. The most humid April was 2017 at 79%, and the least humid was 1988 at 57%.
April receives about 4.6 kWh/m²/day of solar energy in Sylvan Lake. The sunniest April was 2020 at 5.1 kWh/m²/day, and the cloudiest was 2017 at 3.6.
Average wind speed in Sylvan Lake during April is 2.7 m/s. The windiest April was 2010 at 3.5 m/s, while the calmest were 1989 and 1993 at 2.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 3.8°C | 4.3°C | 3.4°C | 3.6°C | 3.4°C | -0.4°C |
| Avg High | 10.0°C | 10.3°C | 9.3°C | 9.4°C | 9.3°C | -0.7°C |
| Avg Low | -2.4°C | -1.7°C | -2.5°C | -2.2°C | -2.6°C | -0.2°C |
| Avg Rain | 30 mm | 32 mm | 38 mm | 42 mm | 35 mm | +6 mm |
April temperatures in Sylvan Lake have risen by about 0.5°C between 1981–1985 and 2021–2025.
April has ranged from a record low of -19.6°C (1982) to a record high of 26.3°C (1987).
Rainfall in April is one of the drier months, averaging 35 mm, with a wettest year of 80 mm.
A good time to visit Sylvan Lake
April is a good time to visit Sylvan Lake, with days averaging 9.7°C and nights around -2.2°C (mean 3.7°C, close to Sylvan Lake's yearly average) and moderate rainfall. August and July are marginally more temperate, but April still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 10.8°C | 4.6°C | -1.7°C | 19.1°C | -7.2°C | 50 mm | 68% | 2.4 m/s | 4.8 |
| 2024 | 10.0°C | 4.3°C | -1.4°C | 18.1°C | -6.8°C | 28 mm | 66% | 3 m/s | 4.5 |
| 2023 | 11.2°C | 4.6°C | -2.0°C | 23.2°C | -5.7°C | 23 mm | 63% | 2.5 m/s | 5 |
| 2022 | 6.4°C | 1.4°C | -3.6°C | 17.5°C | -10.8°C | 54 mm | 68% | 3 m/s | 4.9 |
| 2021 | 10.2°C | 3.7°C | -2.7°C | 21.3°C | -6.7°C | 29 mm | 62% | 2.5 m/s | 4.9 |
| 2020 | 7.1°C | 1.5°C | -4.2°C | 19.1°C | -16.1°C | 28 mm | 71% | 2.9 m/s | 5.1 |
| 2019 | 9.0°C | 3.5°C | -2.0°C | 17.0°C | -8.8°C | 47 mm | 70% | 2.4 m/s | 4.3 |
| 2018 | 7.7°C | 1.7°C | -4.3°C | 24.8°C | -15.9°C | 29 mm | 72% | 2.6 m/s | 5 |
| 2017 | 7.7°C | 2.9°C | -1.9°C | 15.5°C | -5.0°C | 67 mm | 79% | 2.4 m/s | 3.6 |
| 2016 🔥 | 14.1°C | 7.1°C | 0.2°C | 24.6°C | -5.1°C | 23 mm | 67% | 3 m/s | 4.8 |
| 2015 | 11.2°C | 4.9°C | -1.4°C | 25.4°C | -4.7°C | 22 mm | 63% | 2.9 m/s | 4.5 |
| 2014 | 9.6°C | 3.5°C | -2.6°C | 20.2°C | -10.2°C | 33 mm | 70% | 2.6 m/s | 4.8 |
| 2013 | 6.3°C | 1.0°C | -4.2°C | 19.9°C | -12.3°C | 42 mm | 71% | 3 m/s | 4.4 |
| 2012 | 9.6°C | 4.1°C | -1.5°C | 23.5°C | -6.1°C | 71 mm | 72% | 2.9 m/s | 4.2 |
| 2011 | 7.2°C | 2.1°C | -2.9°C | 14.3°C | -7.5°C | 35 mm | 68% | 2.4 m/s | 5 |
| 2010 | 11.4°C | 5.1°C | -1.2°C | 22.4°C | -6.4°C | 47 mm | 60% | 3.5 m/s | 4.6 |
| 2009 | 8.8°C | 3.1°C | -2.7°C | 20.4°C | -6.8°C | 20 mm | 66% | 2.3 m/s | 4.8 |
| 2008 | 6.4°C | 1.0°C | -4.4°C | 20.1°C | -10.6°C | 41 mm | 72% | 2.7 m/s | 4.5 |
| 2007 🌧️ | 6.8°C | 1.7°C | -3.3°C | 16.2°C | -12.4°C | 80 mm | 76% | 2.7 m/s | 4.1 |
| 2006 | 13.1°C | 6.5°C | -0.1°C | 22.4°C | -4.2°C | 25 mm | 67% | 2.7 m/s | 4.9 |
| 2005 | 11.4°C | 5.1°C | -1.1°C | 22.1°C | -6.5°C | 11 mm | 68% | 2.8 m/s | 5 |
| 2004 | 11.8°C | 5.4°C | -1.1°C | 24.4°C | -7.0°C | 28 mm | 64% | 2.7 m/s | 4.8 |
| 2003 | 8.8°C | 3.4°C | -2.0°C | 20.5°C | -11.3°C | 79 mm | 76% | 2.6 m/s | 4.1 |
| 2002 | 5.4°C | 0.2°C | -5.0°C | 16.8°C | -15.8°C | 46 mm | 71% | 2.8 m/s | 4.3 |
| 2001 | 10.6°C | 4.4°C | -1.8°C | 23.9°C | -6.2°C | 17 mm | 63% | 2.8 m/s | 4.5 |
| 2000 | 9.5°C | 3.2°C | -3.1°C | 19.9°C | -11.9°C | 33 mm | 65% | 2.7 m/s | 4.6 |
| 1999 | 10.8°C | 4.7°C | -1.3°C | 21.9°C | -5.5°C | 47 mm | 68% | 2.7 m/s | 4.5 |
| 1998 | 12.4°C | 5.9°C | -0.6°C | 21.1°C | -4.4°C | 35 mm | 66% | 2.3 m/s | 4.9 |
| 1997 | 7.3°C | 1.4°C | -4.5°C | 15.8°C | -13.9°C | 22 mm | 67% | 2.7 m/s | 5 |
| 1996 | 10.3°C | 4.4°C | -1.4°C | 19.6°C | -10.1°C | 36 mm | 72% | 2.6 m/s | 4.3 |
| 1995 | 8.5°C | 2.9°C | -2.6°C | 15.5°C | -9.4°C | 25 mm | 67% | 3 m/s | 4.1 |
| 1994 | 11.9°C | 5.2°C | -1.4°C | 21.9°C | -5.7°C | 8 mm | 64% | 2.6 m/s | 4.6 |
| 1993 | 10.3°C | 4.5°C | -1.3°C | 15.6°C | -3.9°C | 31 mm | 71% | 2.1 m/s | 4.5 |
| 1992 | 11.2°C | 5.2°C | -0.8°C | 23.1°C | -11.7°C | 27 mm | 69% | 2.5 m/s | 4.3 |
| 1991 | 10.9°C | 5.2°C | -0.5°C | 19.6°C | -3.5°C | 36 mm | 68% | 2.6 m/s | 4.7 |
| 1990 | 9.5°C | 3.6°C | -2.3°C | 19.8°C | -9.2°C | 51 mm | 72% | 2.7 m/s | 4.5 |
| 1989 | 10.2°C | 4.0°C | -2.2°C | 19.3°C | -9.6°C | 26 mm | 65% | 2.1 m/s | 5 |
| 1988 | 12.7°C | 5.6°C | -1.5°C | 22.2°C | -5.6°C | 9 mm | 57% | 2.9 m/s | 4.8 |
| 1987 | 13.4°C | 6.5°C | -0.3°C | 26.3°C | -4.6°C | 30 mm | 65% | 2.6 m/s | 4.9 |
| 1986 | 8.2°C | 2.6°C | -3.0°C | 21.7°C | -12.6°C | 34 mm | 69% | 2.8 m/s | 4.6 |
| 1985 | 9.5°C | 3.7°C | -2.1°C | 17.8°C | -6.6°C | 38 mm | 70% | 2.7 m/s | 4.7 |
| 1984 | 10.7°C | 4.5°C | -1.7°C | 24.7°C | -5.2°C | 20 mm | 66% | 2.4 m/s | 4.5 |
| 1983 | 9.7°C | 4.0°C | -1.7°C | 18.4°C | -8.2°C | 60 mm | 72% | 2.3 m/s | — |
| 1982 ❄️ | 6.0°C | -0.1°C | -6.3°C | 19.7°C | -19.6°C | 22 mm | 72% | 2.8 m/s | — |
| 1981 | 10.0°C | 3.8°C | -2.4°C | 20.5°C | -9.5°C | 26 mm | 66% | 2.8 m/s | — |
Actual recorded April data for each year, 1981–2025 — sourced from NASA POWER.
The average high in April is around 9.7°C with lows near -2.2°C (mean 3.7°C), based on 45 years of NASA POWER data.
April averages 35 mm of rainfall in Sylvan Lake, one of the drier months. The wettest on record was 80 mm in 2007.
The hottest April reached 26.3°C in 1987. The coldest dipped to -19.6°C in 1982.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average April temperatures have risen by about 0.5°C. Daytime highs moved from 9.2°C to 9.7°C and overnight lows from -2.8°C to -2.3°C over the same span.
April is close to Sylvan Lake's year-round average and one of the drier months, so plan for around 9.7°C daytime highs and -2.2°C at night.
Not quite — April is the 6th coolest month in Sylvan Lake, averaging 3.7°C.
For April in Sylvan Lake, pack warm layers and a jacket for chilly mornings, with typical highs of 9.7°C and lows of -2.2°C.
Relative humidity in April averages 68% — moderately humid.
Average wind speed in April is 2.7 m/s. The windiest April on record averaged 3.5 m/s (2010).
The wettest April on record was 2007 with 80 mm. On average, April sees 35 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 Sylvan Lake behaves each April, 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 April specifically, along with year-by-year records and how the month has changed over the decades.
