April is one of the cooler months of the year in Tracy, with average highs near 21.1°C and lows around 7°C (mean 14.1°C). It is about average for rainfall, averaging 29 mm of rainfall and 70% relative humidity across the period.
April is one of the cooler months of the year in Tracy. Across 45 years of records, the warmest April in Tracy was 1987 — when the month averaged 16.8°C — while the coldest was 1983 at 10.6°C. Typical April days reach 21.1°C with nights near 7°C. The long-term trend is warming, about 0.2°C per decade.
April is about average for rainfall in Tracy, averaging 29 mm of rainfall. The wettest April on record was 2006 with 86 mm, while the driest was 2021 at 1 mm.
Relative humidity in Tracy during April averages 70%. The most humid April was 2006 at 83%, and the least humid was 1987 at 58%.
April receives about 6.3 kWh/m²/day of solar energy in Tracy. The sunniest April was 2021 at 7.1 kWh/m²/day, and the cloudiest was 2006 at 5.
Average wind speed in Tracy during April is 2.5 m/s. The windiest Aprils were 1984 and 1997 at 3.1 m/s, while the calmest was 1998 at 2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 14.0°C | 13.7°C | 13.6°C | 14.4°C | 14.7°C | +0.7°C |
| Avg High | 21.1°C | 20.5°C | 20.6°C | 21.4°C | 22.3°C | +1.2°C |
| Avg Low | 6.9°C | 7.0°C | 6.6°C | 7.4°C | 7.1°C | +0.2°C |
| Avg Rain | 29 mm | 27 mm | 31 mm | 36 mm | 20 mm | -9 mm |
April temperatures in Tracy have risen by about 1.6°C between 1981–1985 and 2021–2025.
April has ranged from a record low of -0.9°C (1999) to a record high of 35.2°C (2007).
Rainfall in April is about average for rainfall, averaging 29 mm, with a wettest year of 86 mm.
A good time to visit Tracy
April is a good time to visit Tracy, with days averaging 21.1°C and nights around 7°C (mean 14.1°C, cooler than Tracy's yearly average) and low rainfall. June and September 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 | 23.1°C | 15.3°C | 7.6°C | 30.2°C | 3.8°C | 15 mm | 69% | 2.3 m/s | 6.2 |
| 2024 | 21.0°C | 14.2°C | 7.5°C | 28.5°C | 2.9°C | 39 mm | 74% | 2.3 m/s | 6.3 |
| 2023 | 19.4°C | 12.7°C | 6.0°C | 28.4°C | 1.0°C | 2 mm | 77% | 2.4 m/s | 6.8 |
| 2022 | 23.1°C | 14.9°C | 6.8°C | 34.3°C | 2.0°C | 25 mm | 62% | 2.9 m/s | 6.6 |
| 2021 | 24.7°C | 15.7°C | 6.6°C | 33.3°C | 4.2°C | 1 mm | 60% | 2.6 m/s | 7.1 |
| 2020 | 22.6°C | 15.3°C | 8.0°C | 31.8°C | 2.8°C | 38 mm | 69% | 2.5 m/s | 6.2 |
| 2019 | 22.2°C | 15.6°C | 8.9°C | 31.9°C | 5.9°C | 9 mm | 75% | 2.2 m/s | 6.2 |
| 2018 | 21.8°C | 14.6°C | 7.4°C | 29.4°C | 3.5°C | 45 mm | 70% | 2.4 m/s | 6.2 |
| 2017 | 19.1°C | 13.2°C | 7.4°C | 25.3°C | 3.4°C | 53 mm | 79% | 2.4 m/s | 5.8 |
| 2016 | 21.6°C | 15.0°C | 8.5°C | 31.1°C | 5.3°C | 44 mm | 73% | 2.4 m/s | 6.2 |
| 2015 | 23.5°C | 15.4°C | 7.3°C | 32.5°C | 3.7°C | 26 mm | 62% | 2.6 m/s | 6.9 |
| 2014 | 23.8°C | 15.9°C | 8.1°C | 34.3°C | 4.1°C | 26 mm | 64% | 2.4 m/s | 6.6 |
| 2013 | 24.9°C | 16.5°C | 8.0°C | 33.2°C | 3.5°C | 11 mm | 59% | 2.9 m/s | 7 |
| 2012 | 21.8°C | 14.5°C | 7.2°C | 32.8°C | 1.3°C | 59 mm | 70% | 2.5 m/s | 6.4 |
| 2011 | 18.4°C | 12.1°C | 5.8°C | 26.3°C | 1.0°C | 7 mm | 78% | 2.6 m/s | 6.3 |
| 2010 | 17.2°C | 11.2°C | 5.2°C | 25.1°C | 1.4°C | 84 mm | 79% | 2.3 m/s | 5.6 |
| 2009 | 21.3°C | 13.9°C | 6.6°C | 34.1°C | 0.9°C | 12 mm | 65% | 2.7 m/s | 6.6 |
| 2008 | 21.7°C | 13.7°C | 5.7°C | 32.7°C | 0.2°C | 2 mm | 63% | 2.7 m/s | 6.9 |
| 2007 | 22.2°C | 14.7°C | 7.1°C | 35.2°C | 3.0°C | 26 mm | 64% | 2.6 m/s | 6.3 |
| 2006 🌧️ | 18.0°C | 12.5°C | 7.0°C | 26.3°C | 2.0°C | 86 mm | 83% | 2.1 m/s | 5 |
| 2005 | 18.9°C | 12.5°C | 6.1°C | 24.5°C | 2.3°C | 35 mm | 76% | 2.3 m/s | 6.2 |
| 2004 | 23.9°C | 15.9°C | 8.0°C | 34.7°C | 4.5°C | 4 mm | 62% | 2.5 m/s | 6.8 |
| 2003 | 17.1°C | 11.3°C | 5.6°C | 26.0°C | 2.3°C | 71 mm | 76% | 2.3 m/s | 5.2 |
| 2002 | 21.3°C | 14.3°C | 7.3°C | 30.2°C | 2.8°C | 8 mm | 71% | 2.5 m/s | 6 |
| 2001 | 19.1°C | 12.2°C | 5.2°C | 31.4°C | 0.5°C | 38 mm | 72% | 2.5 m/s | 6.3 |
| 2000 | 22.1°C | 14.7°C | 7.4°C | 28.5°C | 4.4°C | 29 mm | 71% | 2.5 m/s | 6.4 |
| 1999 | 19.0°C | 12.3°C | 5.7°C | 28.7°C | -0.9°C | 38 mm | 71% | 2.9 m/s | 6.3 |
| 1998 | 17.4°C | 11.7°C | 6.1°C | 28.1°C | 1.6°C | 46 mm | 81% | 2 m/s | 5.9 |
| 1997 | 22.2°C | 14.8°C | 7.3°C | 29.3°C | 2.4°C | 10 mm | 68% | 3.1 m/s | 6.5 |
| 1996 | 21.0°C | 14.4°C | 7.8°C | 30.0°C | 3.6°C | 39 mm | 75% | 2.5 m/s | 6.3 |
| 1995 | 17.7°C | 11.9°C | 6.1°C | 24.3°C | 2.1°C | 53 mm | 81% | 2.4 m/s | 5.7 |
| 1994 | 22.3°C | 14.8°C | 7.4°C | 30.4°C | 4.4°C | 36 mm | 67% | 2.5 m/s | 5.9 |
| 1993 | 18.8°C | 12.8°C | 6.8°C | 25.6°C | 2.6°C | 12 mm | 79% | 2.7 m/s | 6.3 |
| 1992 | 22.5°C | 15.4°C | 8.4°C | 29.8°C | 4.3°C | 8 mm | 72% | 2.4 m/s | 6.3 |
| 1991 | 19.3°C | 12.4°C | 5.6°C | 26.1°C | 2.4°C | 11 mm | 72% | 2.8 m/s | 6.5 |
| 1990 | 24.5°C | 16.6°C | 8.8°C | 30.1°C | 3.9°C | 12 mm | 63% | 2.7 m/s | 6.3 |
| 1989 | 23.6°C | 16.1°C | 8.7°C | 31.6°C | 4.7°C | 11 mm | 67% | 2.1 m/s | 6 |
| 1988 | 22.8°C | 15.3°C | 7.8°C | 33.3°C | 4.6°C | 47 mm | 60% | 2.3 m/s | 5.5 |
| 1987 🔥 | 25.4°C | 16.8°C | 8.2°C | 32.3°C | 3.6°C | 7 mm | 58% | 2.4 m/s | 6.5 |
| 1986 | 18.8°C | 12.4°C | 6.0°C | 27.2°C | 3.2°C | 20 mm | 76% | 2.3 m/s | 6 |
| 1985 | 24.1°C | 16.1°C | 8.2°C | 32.9°C | 4.5°C | 8 mm | 62% | 2.5 m/s | 6.5 |
| 1984 | 19.9°C | 12.8°C | 5.7°C | 31.7°C | 2.4°C | 14 mm | 66% | 3.1 m/s | 6.3 |
| 1983 ❄️ | 15.8°C | 10.6°C | 5.4°C | 21.9°C | 0.4°C | 81 mm | 80% | 2.2 m/s | — |
| 1982 | 17.3°C | 11.3°C | 5.3°C | 23.8°C | 0.9°C | 61 mm | 80% | 2.3 m/s | — |
| 1981 | 22.2°C | 14.4°C | 6.7°C | 34.9°C | 3.0°C | 17 mm | 67% | 2.4 m/s | — |
Actual recorded April data for each year, 1981–2025 — sourced from NASA POWER.
The average high in April is around 21.1°C with lows near 7°C (mean 14.1°C), based on 45 years of NASA POWER data.
April averages 29 mm of rainfall in Tracy, about average for rainfall. The wettest on record was 86 mm in 2006.
The hottest April reached 35.2°C in 2007. The coldest dipped to -0.9°C in 1999.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average April temperatures have risen by about 1.6°C. Daytime highs moved from 19.9°C to 22.3°C and overnight lows from 6.3°C to 6.9°C over the same span.
April is one of the cooler months of the year in Tracy and about average for rainfall, so plan for around 21.1°C daytime highs and 7°C at night.
Not quite — April is the 6th coolest month in Tracy, averaging 14.1°C.
For April in Tracy, pack warm layers and a jacket for chilly mornings, with typical highs of 21.1°C and lows of 7°C.
Relative humidity in April averages 70% — moderately humid.
Average wind speed in April is 2.5 m/s. The windiest April on record averaged 3.1 m/s (1984).
The wettest April on record was 2006 with 86 mm. On average, April sees 29 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 Tracy 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.
