April is one of the cooler months of the year in Ithaca, with average highs near 11.8°C and lows around 0.7°C (mean 6.3°C). It is about average for rainfall, averaging 90 mm of rainfall and 80% relative humidity across the period.
April is one of the cooler months of the year in Ithaca. Across 45 years of records, the warmest April in Ithaca was 2017 — when the month averaged 9.4°C — while the coldest was 2018 at 3.1°C. Typical April days reach 11.8°C with nights near 0.7°C. The long-term trend is warming, about 0.2°C per decade.
April is about average for rainfall in Ithaca, averaging 90 mm of rainfall. The wettest April on record was 2011 with 201 mm, while the driest was 2001 at 27 mm.
Relative humidity in Ithaca during April averages 80%. The most humid April was 2011 at 86%, and the least humid was 2010 at 75%.
April receives about 4.4 kWh/m²/day of solar energy in Ithaca. The sunniest April was 2008 at 5.3 kWh/m²/day, and the cloudiest were 1993 and 2011 at 3.5.
Average wind speed in Ithaca during April is 0.4 m/s. The windiest April was 1982 at 0.5 m/s, while the calmest were 2022, 2023 and 2024, 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 | 5.9°C | 5.9°C | 6.6°C | 6.4°C | 6.8°C | +0.9°C |
| Avg High | 11.4°C | 11.3°C | 12.3°C | 12.0°C | 12.4°C | +1°C |
| Avg Low | 0.4°C | 0.5°C | 0.9°C | 0.8°C | 1.3°C | +0.9°C |
| Avg Rain | 83 mm | 93 mm | 83 mm | 92 mm | 101 mm | +17 mm |
April temperatures in Ithaca have risen by about 1.4°C between 1981–1985 and 2021–2025.
April has ranged from a record low of -13.1°C (1982) to a record high of 29.1°C (2009).
Rainfall in April is about average for rainfall, averaging 90 mm, with a wettest year of 201 mm.
A good time to visit Ithaca
April is a good time to visit Ithaca, with days averaging 11.8°C and nights around 0.7°C (mean 6.3°C, cooler than Ithaca's yearly average) and higher rainfall. July and August 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 | 12.8°C | 7.0°C | 1.2°C | 25.0°C | -5.5°C | 86 mm | 77% | 0.4 m/s | 4.4 |
| 2024 | 13.3°C | 7.9°C | 2.5°C | 23.7°C | -4.9°C | 112 mm | 83% | 0.3 m/s | 4 |
| 2023 | 15.0°C | 8.9°C | 2.8°C | 28.4°C | -4.9°C | 116 mm | 78% | 0.3 m/s | 4.7 |
| 2022 | 10.8°C | 5.4°C | 0.0°C | 25.7°C | -3.8°C | 101 mm | 82% | 0.3 m/s | 4.3 |
| 2021 | 12.5°C | 7.0°C | 1.5°C | 23.9°C | -6.7°C | 86 mm | 78% | 0.3 m/s | 4.5 |
| 2020 | 9.8°C | 4.6°C | -0.5°C | 19.4°C | -5.5°C | 104 mm | 80% | 0.4 m/s | 4.1 |
| 2019 | 12.9°C | 7.4°C | 1.9°C | 20.7°C | -5.1°C | 97 mm | 83% | 0.4 m/s | 4 |
| 2018 ❄️ | 7.8°C | 3.1°C | -1.6°C | 17.7°C | -7.4°C | 69 mm | 82% | 0.4 m/s | 3.9 |
| 2017 🔥 | 15.0°C | 9.4°C | 3.8°C | 23.5°C | -3.0°C | 120 mm | 82% | 0.3 m/s | 4.5 |
| 2016 | 10.6°C | 4.6°C | -1.5°C | 21.5°C | -11.2°C | 61 mm | 76% | 0.4 m/s | 4.7 |
| 2015 | 11.9°C | 6.2°C | 0.4°C | 20.5°C | -4.8°C | 93 mm | 79% | 0.3 m/s | 4.5 |
| 2014 | 11.5°C | 5.6°C | -0.3°C | 21.6°C | -6.9°C | 80 mm | 81% | 0.4 m/s | 4.3 |
| 2013 | 11.9°C | 6.0°C | 0.1°C | 19.5°C | -8.5°C | 80 mm | 78% | 0.4 m/s | 4.6 |
| 2012 | 11.3°C | 5.8°C | 0.2°C | 25.6°C | -3.7°C | 66 mm | 76% | 0.4 m/s | 4.9 |
| 2011 🌧️ | 11.9°C | 6.8°C | 1.8°C | 22.8°C | -3.2°C | 201 mm | 86% | 0.3 m/s | 3.5 |
| 2010 | 15.5°C | 9.2°C | 3.0°C | 23.5°C | -1.5°C | 53 mm | 75% | 0.4 m/s | 5.1 |
| 2009 | 13.3°C | 7.5°C | 1.7°C | 29.1°C | -4.9°C | 63 mm | 78% | 0.4 m/s | 4.8 |
| 2008 | 14.7°C | 8.6°C | 2.5°C | 26.1°C | -4.8°C | 65 mm | 80% | 0.4 m/s | 5.3 |
| 2007 | 9.1°C | 4.6°C | 0.0°C | 21.9°C | -8.4°C | 97 mm | 83% | 0.4 m/s | 3.9 |
| 2006 | 12.7°C | 6.7°C | 0.7°C | 19.7°C | -5.1°C | 72 mm | 80% | 0.4 m/s | 5 |
| 2005 | 13.7°C | 7.2°C | 0.7°C | 22.7°C | -4.1°C | 129 mm | 80% | 0.3 m/s | 5.1 |
| 2004 | 11.8°C | 6.5°C | 1.2°C | 23.6°C | -6.8°C | 99 mm | 82% | 0.3 m/s | 4.2 |
| 2003 | 10.6°C | 5.1°C | -0.3°C | 22.7°C | -8.7°C | 61 mm | 82% | 0.3 m/s | 4.2 |
| 2002 | 12.9°C | 7.3°C | 1.7°C | 28.0°C | -6.9°C | 92 mm | 79% | 0.3 m/s | 4.2 |
| 2001 | 13.1°C | 7.0°C | 0.8°C | 25.9°C | -4.6°C | 27 mm | 78% | 0.4 m/s | 5 |
| 2000 | 10.8°C | 5.5°C | 0.1°C | 20.9°C | -6.5°C | 125 mm | 83% | 0.4 m/s | 3.8 |
| 1999 | 12.0°C | 6.1°C | 0.2°C | 19.4°C | -5.0°C | 63 mm | 78% | 0.4 m/s | 4.9 |
| 1998 | 12.4°C | 6.9°C | 1.3°C | 20.2°C | -3.8°C | 92 mm | 80% | 0.4 m/s | 4.4 |
| 1997 | 9.8°C | 4.5°C | -0.8°C | 19.9°C | -7.7°C | 38 mm | 79% | 0.4 m/s | 4.9 |
| 1996 | 9.6°C | 4.6°C | -0.4°C | 20.8°C | -4.7°C | 136 mm | 84% | 0.3 m/s | 3.8 |
| 1995 | 9.7°C | 4.0°C | -1.6°C | 19.0°C | -8.9°C | 59 mm | 76% | 0.4 m/s | 4.6 |
| 1994 | 12.5°C | 6.6°C | 0.8°C | 24.4°C | -5.9°C | 89 mm | 83% | 0.4 m/s | 4.8 |
| 1993 | 11.5°C | 6.2°C | 0.9°C | 21.7°C | -4.3°C | 182 mm | 85% | 0.3 m/s | 3.5 |
| 1992 | 10.2°C | 5.1°C | 0.1°C | 20.0°C | -6.1°C | 80 mm | 82% | 0.3 m/s | 4.1 |
| 1991 | 13.5°C | 8.2°C | 2.8°C | 23.1°C | -4.5°C | 104 mm | 84% | 0.3 m/s | 4.1 |
| 1990 | 12.1°C | 7.0°C | 1.8°C | 26.6°C | -4.2°C | 90 mm | 82% | 0.3 m/s | 4.1 |
| 1989 | 9.9°C | 4.2°C | -1.4°C | 20.5°C | -4.9°C | 40 mm | 77% | 0.3 m/s | 4.7 |
| 1988 | 11.1°C | 5.7°C | 0.3°C | 18.3°C | -5.2°C | 65 mm | 81% | 0.3 m/s | 4.2 |
| 1987 | 12.6°C | 7.6°C | 2.6°C | 24.0°C | -5.2°C | 100 mm | 84% | 0.3 m/s | 4.3 |
| 1986 | 12.2°C | 6.7°C | 1.2°C | 22.6°C | -3.8°C | 80 mm | 83% | 0.3 m/s | 4.8 |
| 1985 | 13.8°C | 7.8°C | 1.8°C | 26.3°C | -6.8°C | 35 mm | 78% | 0.4 m/s | 4.8 |
| 1984 | 10.8°C | 5.9°C | 1.0°C | 20.8°C | -6.0°C | 110 mm | 86% | 0.3 m/s | 4.4 |
| 1983 | 9.3°C | 4.7°C | 0.0°C | 21.5°C | -5.4°C | 186 mm | 86% | 0.3 m/s | — |
| 1982 | 9.7°C | 3.8°C | -2.2°C | 21.5°C | -13.1°C | 55 mm | 78% | 0.5 m/s | — |
| 1981 | 13.1°C | 6.8°C | 0.4°C | 20.3°C | -5.9°C | 80 mm | 77% | 0.4 m/s | — |
Actual recorded April data for each year, 1981–2025 — sourced from NASA POWER.
The average high in April is around 11.8°C with lows near 0.7°C (mean 6.3°C), based on 45 years of NASA POWER data.
April averages 90 mm of rainfall in Ithaca, about average for rainfall. The wettest on record was 201 mm in 2011.
The hottest April reached 29.1°C in 2009. The coldest dipped to -13.1°C in 1982.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average April temperatures have risen by about 1.4°C. Daytime highs moved from 11.3°C to 12.9°C and overnight lows from 0.2°C to 1.6°C over the same span.
April is one of the cooler months of the year in Ithaca and about average for rainfall, so plan for around 11.8°C daytime highs and 0.7°C at night.
Not quite — April is the 6th coolest month in Ithaca, averaging 6.3°C.
For April in Ithaca, pack warm layers and a jacket for chilly mornings, with typical highs of 11.8°C and lows of 0.7°C. Bring an umbrella or light rain jacket too.
Relative humidity in April averages 80% — quite humid.
Average wind speed in April is 0.4 m/s. The windiest April on record averaged 0.5 m/s (1982).
The wettest April on record was 2011 with 201 mm. On average, April sees 90 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 Ithaca 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.
