April is one of the cooler months of the year in Glendale, with average highs near 29.6°C and lows around 12.8°C (mean 21.2°C). It is one of the drier months, averaging 7 mm of rainfall and 29% relative humidity across the period.
April is one of the cooler months of the year in Glendale. Across 45 years of records, the warmest April in Glendale was 1989 — when the month averaged 24.8°C — while the coldest was 1983 at 16.6°C. Typical April days reach 29.6°C with nights near 12.8°C. The long-term trend is warming, about 0.5°C per decade.
April is one of the drier months in Glendale, averaging 7 mm of rainfall. The wettest April on record was 1988 with 38 mm, while the driest were 2018, 2022 and 2023, among others at 0 mm.
Relative humidity in Glendale during April averages 29%. The most humid April was 1983 at 43%, and the least humid were 2018 and 2022 at 17%.
April receives about 7.2 kWh/m²/day of solar energy in Glendale. The sunniest April was 2008 at 7.8 kWh/m²/day, and the cloudiest was 1988 at 6.2.
Average wind speed in Glendale during April is 2.4 m/s. The windiest April was 2011 at 2.8 m/s, while the calmest was 1992 at 1.9 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 21.1°C | 20.0°C | 20.8°C | 22.2°C | 22.2°C | +1.1°C |
| Avg High | 29.7°C | 28.4°C | 29.2°C | 30.3°C | 30.6°C | +0.9°C |
| Avg Low | 12.5°C | 11.6°C | 12.5°C | 14.0°C | 13.8°C | +1.3°C |
| Avg Rain | 9 mm | 9 mm | 8 mm | 4 mm | 3 mm | -6 mm |
April temperatures in Glendale have risen by about 2.1°C between 1981–1985 and 2021–2025.
April has ranged from a record low of 2.2°C (1999) to a record high of 40.5°C (2012).
Rainfall in April is one of the drier months, averaging 7 mm, with a wettest year of 38 mm.
One of the best times to visit Glendale
April is one of the best times to visit Glendale. Expect days averaging 29.6°C and nights around 12.8°C (mean 21.2°C) — cooler than Glendale's yearly average — with low rainfall (7 mm), so conditions are generally comfortable for sightseeing and outdoor plans.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 29.9°C | 21.7°C | 13.5°C | 37.7°C | 6.6°C | 3 mm | 24% | 2.1 m/s | 7.2 |
| 2024 | 29.3°C | 21.2°C | 13.1°C | 36.1°C | 5.7°C | 13 mm | 32% | 2.2 m/s | 7.4 |
| 2023 | 30.2°C | 21.6°C | 12.9°C | 39.1°C | 2.7°C | 0 mm | 27% | 2.3 m/s | 7.4 |
| 2022 | 32.3°C | 23.4°C | 14.6°C | 36.8°C | 6.5°C | 0 mm | 17% | 2.6 m/s | 7.6 |
| 2021 | 32.4°C | 23.8°C | 15.2°C | 37.1°C | 11.7°C | 1 mm | 19% | 2.6 m/s | 7.4 |
| 2020 | 29.6°C | 21.5°C | 13.5°C | 39.6°C | 8.4°C | 2 mm | 37% | 2.2 m/s | 7.4 |
| 2019 | 30.5°C | 22.6°C | 14.8°C | 38.0°C | 10.0°C | 4 mm | 31% | 2.4 m/s | 7.1 |
| 2018 | 32.5°C | 24.4°C | 16.3°C | 38.0°C | 9.0°C | 0 mm | 17% | 2.5 m/s | 7.2 |
| 2017 | 31.2°C | 22.7°C | 14.1°C | 36.7°C | 7.7°C | 0 mm | 25% | 2.4 m/s | 7.3 |
| 2016 | 29.8°C | 22.1°C | 14.5°C | 36.6°C | 10.4°C | 12 mm | 26% | 2.5 m/s | 7.1 |
| 2015 | 30.1°C | 21.9°C | 13.7°C | 37.2°C | 8.4°C | 5 mm | 22% | 2.3 m/s | 7.3 |
| 2014 | 30.6°C | 22.3°C | 14.0°C | 36.7°C | 7.4°C | 1 mm | 19% | 2.5 m/s | 7.3 |
| 2013 | 30.8°C | 22.3°C | 13.8°C | 39.8°C | 7.5°C | 1 mm | 22% | 2.6 m/s | 7.5 |
| 2012 | 30.8°C | 22.7°C | 14.5°C | 40.5°C | 7.4°C | 3 mm | 21% | 2.3 m/s | 7.2 |
| 2011 | 30.0°C | 21.6°C | 13.2°C | 36.7°C | 3.1°C | 9 mm | 26% | 2.8 m/s | 7.3 |
| 2010 | 27.0°C | 19.0°C | 11.0°C | 34.2°C | 5.5°C | 0 mm | 35% | 2.4 m/s | 7.2 |
| 2009 | 28.6°C | 20.2°C | 11.8°C | 37.8°C | 4.6°C | 11 mm | 25% | 2.6 m/s | 7.3 |
| 2008 | 29.9°C | 20.8°C | 11.8°C | 36.4°C | 7.3°C | 0 mm | 21% | 2.7 m/s | 7.8 |
| 2007 | 29.5°C | 21.1°C | 12.8°C | 38.0°C | 7.5°C | 4 mm | 28% | 2.3 m/s | 7.2 |
| 2006 | 28.8°C | 20.6°C | 12.4°C | 35.7°C | 6.5°C | 1 mm | 26% | 2.1 m/s | 7.2 |
| 2005 | 28.3°C | 19.9°C | 11.5°C | 34.1°C | 7.2°C | 6 mm | 37% | 2.4 m/s | 7.4 |
| 2004 | 28.9°C | 21.0°C | 13.1°C | 36.8°C | 8.3°C | 33 mm | 34% | 2.5 m/s | 7.2 |
| 2003 | 26.9°C | 18.9°C | 10.9°C | 32.8°C | 5.2°C | 3 mm | 33% | 2.5 m/s | 7.4 |
| 2002 | 31.5°C | 23.3°C | 15.1°C | 37.4°C | 9.2°C | 2 mm | 21% | 2.5 m/s | 7.2 |
| 2001 | 27.9°C | 19.9°C | 11.8°C | 37.2°C | 4.1°C | 15 mm | 35% | 2.3 m/s | 6.9 |
| 2000 | 31.8°C | 22.7°C | 13.7°C | 39.6°C | 6.7°C | 2 mm | 26% | 2.3 m/s | 7.7 |
| 1999 | 25.2°C | 17.2°C | 9.2°C | 35.6°C | 2.2°C | 31 mm | 36% | 2.7 m/s | 6.9 |
| 1998 | 25.3°C | 17.1°C | 8.8°C | 35.4°C | 3.8°C | 10 mm | 42% | 2.5 m/s | 7.3 |
| 1997 | 28.3°C | 20.2°C | 12.0°C | 35.8°C | 6.3°C | 13 mm | 29% | 2.6 m/s | 7 |
| 1996 | 31.4°C | 22.3°C | 13.3°C | 39.3°C | 9.8°C | 0 mm | 18% | 2.6 m/s | 7.6 |
| 1995 | 27.0°C | 18.7°C | 10.3°C | 33.3°C | 4.5°C | 11 mm | 37% | 2.4 m/s | 6.7 |
| 1994 | 29.2°C | 20.8°C | 12.5°C | 37.9°C | 7.3°C | 5 mm | 29% | 2.5 m/s | 7 |
| 1993 | 29.2°C | 20.4°C | 11.7°C | 35.7°C | 6.3°C | 0 mm | 41% | 2.3 m/s | 7.4 |
| 1992 | 30.6°C | 22.1°C | 13.6°C | 38.6°C | 8.4°C | 10 mm | 40% | 1.9 m/s | 7.3 |
| 1991 | 28.0°C | 19.2°C | 10.3°C | 33.9°C | 4.0°C | 0 mm | 33% | 2.5 m/s | 7.4 |
| 1990 | 30.1°C | 22.1°C | 14.1°C | 36.7°C | 9.4°C | 6 mm | 31% | 2.3 m/s | 6.4 |
| 1989 🔥 | 34.1°C | 24.8°C | 15.6°C | 40.0°C | 9.8°C | 0 mm | 20% | 2.3 m/s | 7.2 |
| 1988 🌧️ | 28.5°C | 20.3°C | 12.1°C | 36.6°C | 5.9°C | 38 mm | 35% | 2.4 m/s | 6.2 |
| 1987 | 31.7°C | 22.9°C | 14.2°C | 36.9°C | 6.7°C | 2 mm | 27% | 2.6 m/s | 6.9 |
| 1986 | 29.6°C | 21.0°C | 12.4°C | 35.7°C | 7.2°C | 2 mm | 28% | 2.5 m/s | 7 |
| 1985 | 31.0°C | 22.4°C | 13.8°C | 36.8°C | 7.9°C | 7 mm | 33% | 2.3 m/s | 6.8 |
| 1984 | 28.0°C | 19.2°C | 10.5°C | 38.1°C | 4.8°C | 18 mm | 27% | 2.7 m/s | 6.4 |
| 1983 ❄️ | 24.6°C | 16.6°C | 8.7°C | 31.5°C | 3.4°C | 9 mm | 43% | 2.4 m/s | — |
| 1982 | 28.8°C | 20.3°C | 11.9°C | 34.7°C | 5.0°C | 1 mm | 32% | 2.2 m/s | — |
| 1981 | 31.2°C | 22.3°C | 13.3°C | 36.9°C | 5.2°C | 7 mm | 29% | 2.3 m/s | — |
Actual recorded April data for each year, 1981–2025 — sourced from NASA POWER.
The average high in April is around 29.6°C with lows near 12.8°C (mean 21.2°C), based on 45 years of NASA POWER data.
April averages 7 mm of rainfall in Glendale, one of the drier months. The wettest on record was 38 mm in 1988.
The hottest April reached 40.5°C in 2012. The coldest dipped to 2.2°C in 1999.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average April temperatures have risen by about 2.1°C. Daytime highs moved from 28.7°C to 30.8°C and overnight lows from 11.6°C to 13.9°C over the same span.
April is one of the cooler months of the year in Glendale and one of the drier months, so plan for around 29.6°C daytime highs and 12.8°C at night.
Not quite — April is the 6th coolest month in Glendale, averaging 21.2°C.
For April in Glendale, pack light layers you can adjust through the day, with typical highs of 29.6°C and lows of 12.8°C.
Relative humidity in April averages 29% — relatively dry.
Average wind speed in April is 2.4 m/s. The windiest April on record averaged 2.8 m/s (2011).
The wettest April on record was 1988 with 38 mm. On average, April sees 7 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 Glendale 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.
