July is one of the warmer months of the year in Newark, with average highs near 30.3°C and lows around 20.2°C (mean 25.3°C). It is a relatively wet time of year, averaging 116 mm of rainfall and 71% relative humidity across the period.
July is one of the warmer months of the year in Newark. Across 45 years of records, the warmest July in Newark was 2012 — when the month averaged 27.7°C — while the coldest was 1984 at 22°C. Typical July days reach 30.3°C with nights near 20.2°C. The long-term trend is warming, about 0.5°C per decade.
July is a relatively wet time of year in Newark, averaging 116 mm of rainfall. The wettest July on record was 1989 with 211 mm, while the driest was 1983 at 35 mm.
Relative humidity in Newark during July averages 71%. The most humid July was 1989 at 83%, and the least humid was 1999 at 57%.
July receives about 6 kWh/m²/day of solar energy in Newark. The sunniest July was 2019 at 6.7 kWh/m²/day, and the cloudiest was 1984 at 5.4.
Average wind speed in Newark during July is 2.1 m/s. The windiest Julys were 1999, 2001 and 2018, among others at 2.3 m/s, while the calmest were 2019 and 2025 at 1.7 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 24.5°C | 25.2°C | 24.4°C | 25.8°C | 26.7°C | +2.2°C |
| Avg High | 29.7°C | 30.4°C | 29.4°C | 30.7°C | 31.6°C | +1.9°C |
| Avg Low | 19.3°C | 19.9°C | 19.5°C | 20.9°C | 21.8°C | +2.5°C |
| Avg Rain | 115 mm | 102 mm | 106 mm | 127 mm | 139 mm | +24 mm |
July temperatures in Newark have risen by about 2.8°C between 1981–1985 and 2021–2025.
July has ranged from a record low of 10.5°C (1988) to a record high of 39.1°C (2012).
Rainfall in July is a relatively wet time of year, averaging 116 mm, with a wettest year of 211 mm.
One of the best times to visit Newark
July is one of the best times to visit Newark. Expect days averaging 30.3°C and nights around 20.2°C (mean 25.3°C) — warmer than Newark's yearly average — with higher rainfall (116 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 | 31.8°C | 27.0°C | 22.2°C | 36.5°C | 17.5°C | 167 mm | 74% | 1.7 m/s | 6.2 |
| 2024 | 32.1°C | 27.1°C | 22.1°C | 36.5°C | 16.6°C | 107 mm | 71% | 2 m/s | 6.1 |
| 2023 | 30.3°C | 25.8°C | 21.3°C | 33.7°C | 18.7°C | 172 mm | 77% | 1.8 m/s | 6.1 |
| 2022 | 32.1°C | 26.8°C | 21.6°C | 36.9°C | 17.6°C | 100 mm | 69% | 2.1 m/s | 6 |
| 2021 | 31.4°C | 26.2°C | 21.0°C | 35.0°C | 16.0°C | 116 mm | 70% | 2 m/s | 6.2 |
| 2020 | 32.0°C | 27.2°C | 22.3°C | 36.0°C | 20.0°C | 171 mm | 72% | 1.9 m/s | 6.4 |
| 2019 | 30.6°C | 25.8°C | 21.0°C | 34.4°C | 16.0°C | 133 mm | 76% | 1.7 m/s | 6.7 |
| 2018 | 29.8°C | 25.0°C | 20.2°C | 34.7°C | 14.2°C | 162 mm | 75% | 2.3 m/s | 6.3 |
| 2017 | 30.6°C | 25.7°C | 20.9°C | 36.0°C | 14.7°C | 188 mm | 73% | 2 m/s | 5.8 |
| 2016 | 31.6°C | 26.5°C | 21.5°C | 36.1°C | 16.6°C | 143 mm | 71% | 1.9 m/s | 6.3 |
| 2015 | 28.7°C | 24.3°C | 20.0°C | 32.2°C | 16.5°C | 104 mm | 78% | 1.8 m/s | 6.1 |
| 2014 | 29.0°C | 24.0°C | 19.0°C | 32.7°C | 14.1°C | 114 mm | 75% | 2.2 m/s | 6.3 |
| 2013 | 28.9°C | 25.1°C | 21.4°C | 33.1°C | 15.6°C | 136 mm | 83% | 2.1 m/s | 5.8 |
| 2012 🔥 | 33.1°C | 27.7°C | 22.3°C | 39.1°C | 18.6°C | 76 mm | 63% | 2 m/s | 6 |
| 2011 | 32.9°C | 27.4°C | 21.8°C | 38.3°C | 16.8°C | 83 mm | 65% | 2 m/s | 6.6 |
| 2010 | 32.0°C | 26.6°C | 21.1°C | 39.0°C | 14.2°C | 135 mm | 67% | 2 m/s | 6.5 |
| 2009 | 28.1°C | 23.2°C | 18.4°C | 31.7°C | 14.4°C | 86 mm | 74% | 2.1 m/s | 6.1 |
| 2008 | 30.7°C | 25.6°C | 20.6°C | 34.4°C | 17.0°C | 100 mm | 70% | 2 m/s | 6.3 |
| 2007 | 30.2°C | 25.0°C | 19.8°C | 35.0°C | 13.0°C | 68 mm | 66% | 2.1 m/s | 6.2 |
| 2006 | 29.4°C | 25.0°C | 20.7°C | 33.8°C | 15.4°C | 119 mm | 81% | 1.9 m/s | 6.1 |
| 2005 | 30.4°C | 25.5°C | 20.6°C | 35.7°C | 16.7°C | 125 mm | 74% | 1.9 m/s | 5.8 |
| 2004 | 28.6°C | 24.2°C | 19.8°C | 31.8°C | 16.8°C | 178 mm | 78% | 2.2 m/s | 5.6 |
| 2003 | 27.8°C | 23.7°C | 19.7°C | 31.1°C | 17.3°C | 114 mm | 82% | 2.2 m/s | 5.7 |
| 2002 | 32.2°C | 26.2°C | 20.2°C | 37.1°C | 14.6°C | 55 mm | 60% | 2.1 m/s | 6.2 |
| 2001 | 28.9°C | 23.3°C | 17.7°C | 34.2°C | 12.9°C | 81 mm | 65% | 2.3 m/s | 6.5 |
| 2000 | 27.6°C | 22.6°C | 17.6°C | 32.5°C | 12.9°C | 136 mm | 73% | 2 m/s | 5.6 |
| 1999 | 33.5°C | 27.3°C | 21.1°C | 38.0°C | 16.3°C | 46 mm | 57% | 2.3 m/s | 6.2 |
| 1998 | 30.0°C | 24.6°C | 19.1°C | 34.4°C | 14.0°C | 62 mm | 68% | 2 m/s | 6.1 |
| 1997 | 31.3°C | 25.1°C | 18.9°C | 36.8°C | 14.5°C | 72 mm | 60% | 2.2 m/s | 6.4 |
| 1996 | 26.7°C | 22.4°C | 18.1°C | 29.8°C | 13.2°C | 169 mm | 82% | 2.3 m/s | 5.5 |
| 1995 | 31.2°C | 25.9°C | 20.7°C | 36.8°C | 14.2°C | 94 mm | 68% | 2.1 m/s | 5.8 |
| 1994 | 29.9°C | 25.5°C | 21.0°C | 33.9°C | 17.4°C | 158 mm | 76% | 1.9 m/s | 5.6 |
| 1993 | 31.6°C | 26.0°C | 20.4°C | 36.2°C | 15.4°C | 71 mm | 64% | 2.2 m/s | 6 |
| 1992 | 29.6°C | 24.6°C | 19.6°C | 35.4°C | 15.2°C | 116 mm | 70% | 2.3 m/s | 5.8 |
| 1991 | 31.2°C | 25.8°C | 20.4°C | 37.7°C | 15.8°C | 116 mm | 66% | 2.1 m/s | 5.6 |
| 1990 | 29.1°C | 24.3°C | 19.5°C | 32.7°C | 15.9°C | 115 mm | 77% | 2.3 m/s | 5.6 |
| 1989 🌧️ | 27.2°C | 23.2°C | 19.2°C | 30.6°C | 15.0°C | 211 mm | 83% | 1.9 m/s | 5.6 |
| 1988 | 31.8°C | 26.1°C | 20.4°C | 36.7°C | 10.5°C | 143 mm | 66% | 2.1 m/s | 6 |
| 1987 | 31.5°C | 26.0°C | 20.4°C | 37.1°C | 14.5°C | 92 mm | 69% | 1.8 m/s | 6.5 |
| 1986 | 32.0°C | 26.1°C | 20.2°C | 36.5°C | 12.2°C | 92 mm | 64% | 2.2 m/s | 6 |
| 1985 | 30.1°C | 24.6°C | 19.1°C | 33.5°C | 15.0°C | 155 mm | 67% | 2.1 m/s | 6.1 |
| 1984 ❄️ | 26.3°C | 22.0°C | 17.8°C | 29.8°C | 12.3°C | 145 mm | 82% | 2.1 m/s | 5.4 |
| 1983 | 29.4°C | 24.0°C | 18.5°C | 34.0°C | 12.6°C | 35 mm | 72% | 2 m/s | — |
| 1982 | 28.8°C | 23.8°C | 18.8°C | 34.0°C | 11.5°C | 78 mm | 74% | 1.8 m/s | — |
| 1981 | 30.4°C | 24.7°C | 18.9°C | 34.5°C | 13.5°C | 86 mm | 66% | 2.3 m/s | — |
Actual recorded July data for each year, 1981–2025 — sourced from NASA POWER.
The average high in July is around 30.3°C with lows near 20.2°C (mean 25.3°C), based on 45 years of NASA POWER data.
July averages 116 mm of rainfall in Newark, a relatively wet time of year. The wettest on record was 211 mm in 1989.
The hottest July reached 39.1°C in 2012. The coldest dipped to 10.5°C in 1988.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average July temperatures have risen by about 2.8°C. Daytime highs moved from 29°C to 31.5°C and overnight lows from 18.6°C to 21.6°C over the same span.
July is one of the warmer months of the year in Newark and a relatively wet time of year, so plan for around 30.3°C daytime highs and 20.2°C at night.
Not quite — July is the 12th coolest month in Newark, averaging 25.3°C.
For July in Newark, pack light, breathable clothing and sun protection, with typical highs of 30.3°C and lows of 20.2°C. Bring an umbrella or light rain jacket too.
Relative humidity in July averages 71% — moderately humid.
Average wind speed in July is 2.1 m/s. The windiest July on record averaged 2.3 m/s (1981).
The wettest July on record was 1989 with 211 mm. On average, July sees 116 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 Newark 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.
