April is one of the cooler months of the year in Pittsburgh, with average highs near 15.9°C and lows around 3.2°C (mean 9.6°C). It is about average for rainfall, averaging 86 mm of rainfall and 78% relative humidity across the period.
April is one of the cooler months of the year in Pittsburgh. Across 45 years of records, the warmest April in Pittsburgh was 2017 — when the month averaged 12.6°C — while the coldest was 1982 at 6.3°C. Typical April days reach 15.9°C with nights near 3.2°C. The long-term trend is warming, about 0.4°C per decade.
April is about average for rainfall in Pittsburgh, averaging 86 mm of rainfall. The wettest April on record was 2024 with 194 mm, while the driest was 1982 at 35 mm.
Relative humidity in Pittsburgh during April averages 78%. The most humid April was 2011 at 85%, and the least humid was 2023 at 73%.
April receives about 4.6 kWh/m²/day of solar energy in Pittsburgh. The sunniest Aprils were 1985, 2006 and 2010 at 5.2 kWh/m²/day, and the cloudiest was 2011 at 3.5.
Average wind speed in Pittsburgh during April is 0.3 m/s. The windiest April was 1982 at 0.4 m/s, while the calmest were 2023, 2024 and 2025, among others at 0.3 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 8.8°C | 9.0°C | 10.1°C | 10.0°C | 10.0°C | +1.2°C |
| Avg High | 15.1°C | 15.3°C | 16.5°C | 16.4°C | 16.3°C | +1.2°C |
| Avg Low | 2.6°C | 2.7°C | 3.6°C | 3.6°C | 3.7°C | +1.1°C |
| Avg Rain | 83 mm | 86 mm | 79 mm | 88 mm | 100 mm | +18 mm |
April temperatures in Pittsburgh have risen by about 1.7°C between 1981–1985 and 2021–2025.
April has ranged from a record low of -10.7°C (1982) to a record high of 28.9°C (1990).
Rainfall in April is about average for rainfall, averaging 86 mm, with a wettest year of 194 mm.
A good time to visit Pittsburgh
April is a good time to visit Pittsburgh, with days averaging 15.9°C and nights around 3.2°C (mean 9.6°C, close to Pittsburgh's yearly average) and higher 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 | 17.5°C | 11.0°C | 4.5°C | 27.5°C | -4.6°C | 123 mm | 75% | 0.3 m/s | 4.6 |
| 2024 🌧️ | 17.9°C | 11.9°C | 5.9°C | 26.4°C | -2.3°C | 194 mm | 81% | 0.3 m/s | 4.3 |
| 2023 | 17.9°C | 11.0°C | 4.0°C | 27.0°C | -4.1°C | 52 mm | 73% | 0.3 m/s | 4.7 |
| 2022 | 14.4°C | 8.4°C | 2.3°C | 27.2°C | -4.6°C | 74 mm | 78% | 0.3 m/s | 4.3 |
| 2021 | 16.4°C | 10.1°C | 3.8°C | 26.3°C | -6.2°C | 45 mm | 74% | 0.3 m/s | 4.7 |
| 2020 | 13.7°C | 7.7°C | 1.7°C | 22.3°C | -4.4°C | 114 mm | 79% | 0.3 m/s | 4.4 |
| 2019 | 17.3°C | 11.3°C | 5.3°C | 24.2°C | -5.3°C | 90 mm | 81% | 0.3 m/s | 4.2 |
| 2018 | 12.4°C | 6.5°C | 0.5°C | 24.5°C | -5.1°C | 111 mm | 79% | 0.3 m/s | 4.4 |
| 2017 🔥 | 19.1°C | 12.6°C | 6.1°C | 27.9°C | -4.6°C | 82 mm | 80% | 0.3 m/s | 4.6 |
| 2016 | 15.7°C | 9.0°C | 2.4°C | 25.3°C | -6.6°C | 66 mm | 74% | 0.3 m/s | 4.8 |
| 2015 | 16.4°C | 10.0°C | 3.6°C | 23.8°C | -4.5°C | 104 mm | 78% | 0.3 m/s | 4.6 |
| 2014 | 16.6°C | 9.6°C | 2.6°C | 24.1°C | -6.4°C | 98 mm | 77% | 0.3 m/s | 4.5 |
| 2013 | 16.2°C | 9.8°C | 3.5°C | 25.3°C | -5.2°C | 64 mm | 78% | 0.3 m/s | 4.9 |
| 2012 | 15.9°C | 9.2°C | 2.5°C | 26.2°C | -3.8°C | 46 mm | 76% | 0.3 m/s | 5 |
| 2011 | 15.9°C | 10.3°C | 4.7°C | 24.9°C | -2.3°C | 166 mm | 85% | 0.3 m/s | 3.5 |
| 2010 | 18.9°C | 11.8°C | 4.6°C | 27.3°C | -1.6°C | 51 mm | 74% | 0.3 m/s | 5.2 |
| 2009 | 16.1°C | 9.8°C | 3.4°C | 27.6°C | -5.2°C | 79 mm | 78% | 0.3 m/s | 4.7 |
| 2008 | 17.7°C | 11.1°C | 4.5°C | 24.9°C | -3.6°C | 67 mm | 79% | 0.3 m/s | 4.8 |
| 2007 | 13.4°C | 8.0°C | 2.7°C | 24.0°C | -4.6°C | 88 mm | 80% | 0.3 m/s | 3.9 |
| 2006 | 18.2°C | 11.1°C | 4.1°C | 26.4°C | -4.1°C | 72 mm | 74% | 0.3 m/s | 5.2 |
| 2005 | 16.4°C | 10.0°C | 3.6°C | 24.4°C | -1.5°C | 79 mm | 79% | 0.3 m/s | 4.8 |
| 2004 | 15.3°C | 9.4°C | 3.5°C | 25.3°C | -5.3°C | 108 mm | 82% | 0.3 m/s | 4.4 |
| 2003 | 17.4°C | 10.3°C | 3.3°C | 25.6°C | -5.1°C | 55 mm | 78% | 0.3 m/s | 4.9 |
| 2002 | 16.6°C | 10.4°C | 4.2°C | 28.8°C | -4.9°C | 77 mm | 77% | 0.3 m/s | 4.4 |
| 2001 | 18.2°C | 11.2°C | 4.2°C | 26.2°C | -4.1°C | 83 mm | 76% | 0.3 m/s | 4.8 |
| 2000 | 16.1°C | 9.4°C | 2.7°C | 24.3°C | -4.1°C | 81 mm | 76% | 0.3 m/s | 4.4 |
| 1999 | 17.3°C | 10.6°C | 3.9°C | 24.5°C | -3.4°C | 102 mm | 76% | 0.3 m/s | 4.9 |
| 1998 | 16.4°C | 9.7°C | 3.1°C | 21.4°C | -4.8°C | 125 mm | 77% | 0.3 m/s | 4.8 |
| 1997 | 13.4°C | 6.9°C | 0.4°C | 22.2°C | -6.4°C | 41 mm | 75% | 0.3 m/s | 5.1 |
| 1996 | 14.3°C | 8.0°C | 1.7°C | 22.6°C | -5.3°C | 108 mm | 81% | 0.3 m/s | 4.3 |
| 1995 | 14.1°C | 7.6°C | 1.1°C | 21.3°C | -7.0°C | 78 mm | 77% | 0.3 m/s | 4.2 |
| 1994 | 16.7°C | 9.8°C | 2.9°C | 25.8°C | -5.2°C | 95 mm | 80% | 0.3 m/s | 4.9 |
| 1993 | 14.4°C | 8.2°C | 1.9°C | 24.0°C | -4.1°C | 88 mm | 80% | 0.3 m/s | 4 |
| 1992 | 14.8°C | 8.9°C | 3.0°C | 25.0°C | -6.1°C | 56 mm | 79% | 0.3 m/s | 4.4 |
| 1991 | 16.5°C | 10.9°C | 5.4°C | 25.3°C | -5.1°C | 83 mm | 82% | 0.3 m/s | 4.1 |
| 1990 | 15.2°C | 9.2°C | 3.3°C | 28.9°C | -5.0°C | 82 mm | 76% | 0.3 m/s | 4.5 |
| 1989 | 13.7°C | 7.4°C | 1.0°C | 22.1°C | -5.6°C | 47 mm | 77% | 0.3 m/s | 4.9 |
| 1988 | 15.1°C | 8.7°C | 2.3°C | 24.3°C | -4.0°C | 60 mm | 76% | 0.3 m/s | 4.7 |
| 1987 | 15.0°C | 9.1°C | 3.3°C | 27.6°C | -7.0°C | 119 mm | 81% | 0.3 m/s | 4.4 |
| 1986 | 16.4°C | 10.2°C | 3.9°C | 27.3°C | -4.4°C | 59 mm | 79% | 0.3 m/s | 5.1 |
| 1985 | 17.4°C | 11.3°C | 5.3°C | 28.7°C | -6.4°C | 42 mm | 78% | 0.3 m/s | 5.2 |
| 1984 | 14.2°C | 8.3°C | 2.3°C | 24.1°C | -4.4°C | 105 mm | 82% | 0.3 m/s | 4.1 |
| 1983 | 13.5°C | 8.0°C | 2.6°C | 23.7°C | -4.8°C | 132 mm | 80% | 0.3 m/s | — |
| 1982 ❄️ | 13.3°C | 6.3°C | -0.8°C | 23.0°C | -10.7°C | 35 mm | 74% | 0.4 m/s | — |
| 1981 | 17.1°C | 10.2°C | 3.3°C | 24.0°C | -6.1°C | 145 mm | 76% | 0.3 m/s | — |
Actual recorded April data for each year, 1981–2025 — sourced from NASA POWER.
The average high in April is around 15.9°C with lows near 3.2°C (mean 9.6°C), based on 45 years of NASA POWER data.
April averages 86 mm of rainfall in Pittsburgh, about average for rainfall. The wettest on record was 194 mm in 2024.
The hottest April reached 28.9°C in 1990. The coldest dipped to -10.7°C in 1982.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average April temperatures have risen by about 1.7°C. Daytime highs moved from 15.1°C to 16.8°C and overnight lows from 2.5°C to 4.1°C over the same span.
April is one of the cooler months of the year in Pittsburgh and about average for rainfall, so plan for around 15.9°C daytime highs and 3.2°C at night.
Not quite — April is the 6th coolest month in Pittsburgh, averaging 9.6°C.
For April in Pittsburgh, pack warm layers and a jacket for chilly mornings, with typical highs of 15.9°C and lows of 3.2°C. Bring an umbrella or light rain jacket too.
Relative humidity in April averages 78% — quite humid.
Average wind speed in April is 0.3 m/s. The windiest April on record averaged 0.4 m/s (1982).
The wettest April on record was 2024 with 194 mm. On average, April sees 86 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 Pittsburgh 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.
