July is one of the warmer months of the year in Ithaca, with average highs near 26.7°C and lows around 15.3°C (mean 21°C). It is a relatively wet time of year, averaging 101 mm of rainfall and 73% relative humidity across the period.
July is one of the warmer months of the year in Ithaca. Across 45 years of records, the warmest July in Ithaca was 2020 — when the month averaged 23.6°C — while the coldest was 2000 at 18.3°C. Typical July days reach 26.7°C with nights near 15.3°C. The long-term trend is warming, about 0.4°C per decade.
July is a relatively wet time of year in Ithaca, averaging 101 mm of rainfall. The wettest July on record was 2004 with 212 mm, while the driest was 2002 at 35 mm.
Relative humidity in Ithaca during July averages 73%. The most humid July was 2004 at 83%, and the least humid was 1999 at 62%.
July receives about 5.8 kWh/m²/day of solar energy in Ithaca. The sunniest Julys were 2011 and 2020 at 6.5 kWh/m²/day, and the cloudiest was 2004 at 4.8.
Average wind speed in Ithaca during July is 0.2 m/s. The windiest Julys were 2023, 2024 and 2025, among others at 0.2 m/s, while the calmest were 1994, 1995 and 2004, among others at 0.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 20.6°C | 20.6°C | 20.3°C | 21.7°C | 22.2°C | +1.6°C |
| Avg High | 26.6°C | 26.4°C | 25.7°C | 27.3°C | 27.8°C | +1.2°C |
| Avg Low | 14.6°C | 14.9°C | 14.8°C | 16.0°C | 16.5°C | +1.9°C |
| Avg Rain | 98 mm | 89 mm | 109 mm | 104 mm | 111 mm | +14 mm |
July temperatures in Ithaca have risen by about 1.9°C between 1981–1985 and 2021–2025.
July has ranged from a record low of 6.1°C (1982) to a record high of 38.6°C (2011).
Rainfall in July is a relatively wet time of year, averaging 101 mm, with a wettest year of 212 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.3°C per decade while lows rose 0.5°C per decade, narrowing the gap between day and night.
One of the best times to visit Ithaca
July is one of the best times to visit Ithaca. Expect days averaging 26.7°C and nights around 15.3°C (mean 21°C) — warmer than Ithaca's yearly average — with higher rainfall (101 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 | 28.4°C | 22.7°C | 16.9°C | 34.2°C | 10.2°C | 83 mm | 75% | 0.2 m/s | 6.2 |
| 2024 | 28.5°C | 22.6°C | 16.7°C | 32.4°C | 10.8°C | 89 mm | 72% | 0.2 m/s | 6.2 |
| 2023 | 27.2°C | 21.8°C | 16.5°C | 32.1°C | 12.6°C | 136 mm | 77% | 0.2 m/s | 5.5 |
| 2022 | 28.3°C | 22.0°C | 15.7°C | 33.4°C | 9.7°C | 65 mm | 66% | 0.2 m/s | 6.4 |
| 2021 | 25.1°C | 20.3°C | 15.5°C | 28.8°C | 8.5°C | 192 mm | 83% | 0.2 m/s | 5.2 |
| 2020 🔥 | 29.3°C | 23.6°C | 17.9°C | 33.2°C | 14.3°C | 102 mm | 73% | 0.2 m/s | 6.5 |
| 2019 | 27.5°C | 22.2°C | 17.0°C | 30.8°C | 12.2°C | 92 mm | 79% | 0.2 m/s | 6 |
| 2018 | 27.5°C | 21.9°C | 16.2°C | 34.7°C | 9.3°C | 155 mm | 73% | 0.2 m/s | 6.4 |
| 2017 | 25.6°C | 20.5°C | 15.5°C | 30.3°C | 10.9°C | 141 mm | 80% | 0.2 m/s | 5.5 |
| 2016 | 29.0°C | 22.8°C | 16.6°C | 33.5°C | 11.3°C | 74 mm | 64% | 0.2 m/s | 6 |
| 2015 | 25.8°C | 20.2°C | 14.5°C | 32.2°C | 9.0°C | 103 mm | 74% | 0.2 m/s | 6.2 |
| 2014 | 25.3°C | 19.7°C | 14.0°C | 30.6°C | 10.4°C | 111 mm | 76% | 0.2 m/s | 5.7 |
| 2013 | 26.3°C | 21.6°C | 16.9°C | 32.3°C | 8.3°C | 140 mm | 81% | 0.2 m/s | 5.7 |
| 2012 | 29.4°C | 23.1°C | 16.8°C | 35.1°C | 14.0°C | 83 mm | 66% | 0.2 m/s | 6.1 |
| 2011 | 27.6°C | 21.9°C | 16.2°C | 38.6°C | 9.7°C | 45 mm | 75% | 0.2 m/s | 6.5 |
| 2010 | 29.0°C | 22.6°C | 16.3°C | 35.5°C | 8.3°C | 97 mm | 67% | 0.2 m/s | 6.4 |
| 2009 | 23.7°C | 18.7°C | 13.6°C | 28.4°C | 8.6°C | 112 mm | 77% | 0.2 m/s | 5.5 |
| 2008 | 26.3°C | 21.0°C | 15.7°C | 30.3°C | 11.6°C | 124 mm | 77% | 0.2 m/s | 5.5 |
| 2007 | 25.7°C | 20.1°C | 14.4°C | 32.3°C | 7.7°C | 113 mm | 71% | 0.2 m/s | 5.7 |
| 2006 | 26.1°C | 21.4°C | 16.6°C | 30.2°C | 11.3°C | 157 mm | 81% | 0.2 m/s | 5.9 |
| 2005 | 28.2°C | 22.4°C | 16.6°C | 34.4°C | 10.3°C | 69 mm | 71% | 0.2 m/s | 5.9 |
| 2004 🌧️ | 24.4°C | 19.6°C | 14.9°C | 27.9°C | 10.8°C | 212 mm | 83% | 0.1 m/s | 4.8 |
| 2003 | 25.5°C | 20.2°C | 14.9°C | 29.4°C | 9.8°C | 124 mm | 76% | 0.2 m/s | 5.7 |
| 2002 | 27.9°C | 21.7°C | 15.5°C | 32.6°C | 10.1°C | 35 mm | 68% | 0.2 m/s | 6.2 |
| 2001 | 26.0°C | 19.6°C | 13.1°C | 34.1°C | 7.6°C | 52 mm | 62% | 0.2 m/s | 6 |
| 2000 ❄️ | 23.6°C | 18.3°C | 12.9°C | 27.9°C | 9.0°C | 88 mm | 77% | 0.2 m/s | 5.5 |
| 1999 | 29.8°C | 23.2°C | 16.5°C | 34.4°C | 11.3°C | 61 mm | 62% | 0.2 m/s | 6.1 |
| 1998 | 24.7°C | 19.5°C | 14.4°C | 28.0°C | 10.7°C | 77 mm | 77% | 0.2 m/s | 5.9 |
| 1997 | 26.0°C | 19.9°C | 13.8°C | 32.9°C | 8.4°C | 65 mm | 69% | 0.2 m/s | 6 |
| 1996 | 23.9°C | 18.7°C | 13.5°C | 28.6°C | 8.2°C | 108 mm | 78% | 0.2 m/s | 5.8 |
| 1995 | 28.9°C | 22.7°C | 16.5°C | 35.5°C | 8.7°C | 61 mm | 67% | 0.1 m/s | 5.4 |
| 1994 | 26.4°C | 21.2°C | 16.0°C | 32.8°C | 11.2°C | 92 mm | 79% | 0.1 m/s | 5.5 |
| 1993 | 27.0°C | 21.1°C | 15.3°C | 31.4°C | 10.6°C | 56 mm | 72% | 0.1 m/s | 5.9 |
| 1992 | 23.7°C | 18.6°C | 13.5°C | 28.0°C | 9.4°C | 203 mm | 80% | 0.1 m/s | 5.2 |
| 1991 | 27.6°C | 21.2°C | 14.8°C | 34.1°C | 10.5°C | 77 mm | 66% | 0.2 m/s | 6 |
| 1990 | 25.5°C | 19.9°C | 14.4°C | 31.0°C | 8.5°C | 90 mm | 77% | 0.2 m/s | 5.4 |
| 1989 | 25.7°C | 20.5°C | 15.2°C | 33.2°C | 10.7°C | 81 mm | 76% | 0.2 m/s | 5.7 |
| 1988 | 29.9°C | 23.1°C | 16.2°C | 35.6°C | 8.1°C | 127 mm | 64% | 0.2 m/s | 5.7 |
| 1987 | 27.7°C | 21.8°C | 15.9°C | 33.7°C | 9.6°C | 107 mm | 73% | 0.2 m/s | 6 |
| 1986 | 25.7°C | 20.1°C | 14.6°C | 29.9°C | 6.5°C | 153 mm | 77% | 0.2 m/s | 5.4 |
| 1985 | 26.2°C | 19.7°C | 13.2°C | 30.5°C | 8.0°C | 95 mm | 68% | 0.2 m/s | 5.8 |
| 1984 | 24.2°C | 18.8°C | 13.3°C | 28.4°C | 8.1°C | 111 mm | 78% | 0.2 m/s | 5 |
| 1983 | 27.2°C | 21.0°C | 14.8°C | 31.4°C | 7.6°C | 50 mm | 69% | 0.2 m/s | — |
| 1982 | 26.4°C | 20.1°C | 13.9°C | 31.7°C | 6.1°C | 68 mm | 72% | 0.2 m/s | — |
| 1981 | 26.2°C | 20.2°C | 14.3°C | 32.6°C | 8.1°C | 86 mm | 70% | 0.2 m/s | — |
Actual recorded July data for each year, 1981–2025 — sourced from NASA POWER.
The average high in July is around 26.7°C with lows near 15.3°C (mean 21°C), based on 45 years of NASA POWER data.
July averages 101 mm of rainfall in Ithaca, a relatively wet time of year. The wettest on record was 212 mm in 2004.
The hottest July reached 38.6°C in 2011. The coldest dipped to 6.1°C in 1982.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average July temperatures have risen by about 1.9°C. Daytime highs moved from 26°C to 27.5°C and overnight lows from 13.9°C to 16.3°C over the same span.
July is one of the warmer months of the year in Ithaca and a relatively wet time of year, so plan for around 26.7°C daytime highs and 15.3°C at night.
Not quite — July is the 12th coolest month in Ithaca, averaging 21°C.
For July in Ithaca, pack light layers you can adjust through the day, with typical highs of 26.7°C and lows of 15.3°C. Bring an umbrella or light rain jacket too.
Relative humidity in July averages 73% — moderately humid.
Average wind speed in July is 0.2 m/s. The windiest July on record averaged 0.2 m/s (1981).
The wettest July on record was 2004 with 212 mm. On average, July sees 101 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 July, 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 July specifically, along with year-by-year records and how the month has changed over the decades.
