June is one of the warmer months of the year in Morristown, with average highs near 27.3°C and lows around 16.4°C (mean 21.9°C). It is about average for rainfall, averaging 108 mm of rainfall and 75% relative humidity across the period.
June is one of the warmer months of the year in Morristown. Across 45 years of records, the warmest June in Morristown was 2010 — when the month averaged 23.9°C — while the coldest was 1992 at 19.7°C. Typical June days reach 27.3°C with nights near 16.4°C. The long-term trend is warming, about 0.3°C per decade.
June is about average for rainfall in Morristown, averaging 108 mm of rainfall. The wettest June on record was 1989 with 239 mm, while the driest was 1988 at 41 mm.
Relative humidity in Morristown during June averages 75%. The most humid June was 1989 at 85%, and the least humid was 1988 at 51%.
June receives about 6.1 kWh/m²/day of solar energy in Morristown. The sunniest June was 2022 at 7.1 kWh/m²/day, and the cloudiest was 1992 at 5.
Average wind speed in Morristown during June is 0.5 m/s. The windiest Junes were 2016, 2022 and 2023, among others at 0.6 m/s, while the calmest was 1991 at 0.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 21.6°C | 21.2°C | 22.0°C | 22.5°C | 22.1°C | +0.5°C |
| Avg High | 27.3°C | 26.4°C | 27.7°C | 27.8°C | 27.6°C | +0.3°C |
| Avg Low | 16.0°C | 16.0°C | 16.3°C | 17.2°C | 16.6°C | +0.6°C |
| Avg Rain | 108 mm | 115 mm | 102 mm | 114 mm | 94 mm | -14 mm |
June temperatures in Morristown have risen by about 0.9°C between 1981–1985 and 2021–2025.
June has ranged from a record low of 5.4°C (2003) to a record high of 38.9°C (2012).
Rainfall in June is about average for rainfall, averaging 108 mm, with a wettest year of 239 mm.
One of the best times to visit Morristown
June is one of the best times to visit Morristown. Expect days averaging 27.3°C and nights around 16.4°C (mean 21.9°C) — warmer than Morristown's yearly average — with higher rainfall (108 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 | 28.8°C | 23.5°C | 18.2°C | 34.4°C | 13.8°C | 116 mm | 77% | 0.5 m/s | 6.5 |
| 2024 | 29.0°C | 23.1°C | 17.3°C | 34.0°C | 10.2°C | 75 mm | 73% | 0.5 m/s | 6.5 |
| 2023 | 25.9°C | 20.3°C | 14.7°C | 29.9°C | 10.5°C | 113 mm | 74% | 0.6 m/s | 5.8 |
| 2022 | 29.2°C | 22.9°C | 16.7°C | 34.6°C | 10.0°C | 51 mm | 69% | 0.6 m/s | 7.1 |
| 2021 | 27.3°C | 21.9°C | 16.6°C | 31.5°C | 10.7°C | 103 mm | 78% | 0.5 m/s | 6.4 |
| 2020 | 25.5°C | 20.9°C | 16.2°C | 30.8°C | 8.3°C | 107 mm | 83% | 0.5 m/s | 6.2 |
| 2019 | 26.0°C | 21.2°C | 16.5°C | 30.6°C | 9.0°C | 179 mm | 82% | 0.5 m/s | 5.9 |
| 2018 | 27.7°C | 22.8°C | 18.0°C | 32.0°C | 12.8°C | 108 mm | 81% | 0.5 m/s | 6.4 |
| 2017 | 26.5°C | 21.3°C | 16.1°C | 29.7°C | 11.4°C | 86 mm | 77% | 0.5 m/s | 6.4 |
| 2016 | 29.5°C | 23.4°C | 17.4°C | 34.2°C | 10.0°C | 79 mm | 69% | 0.6 m/s | 7 |
| 2015 | 29.0°C | 23.4°C | 17.8°C | 33.4°C | 12.4°C | 112 mm | 72% | 0.6 m/s | 6.3 |
| 2014 | 28.2°C | 22.8°C | 17.5°C | 31.4°C | 14.4°C | 102 mm | 75% | 0.5 m/s | 6 |
| 2013 | 26.0°C | 21.3°C | 16.6°C | 28.0°C | 12.6°C | 196 mm | 83% | 0.5 m/s | 6 |
| 2012 | 28.1°C | 21.8°C | 15.5°C | 38.9°C | 9.0°C | 45 mm | 68% | 0.5 m/s | 6.9 |
| 2011 | 27.7°C | 22.6°C | 17.5°C | 31.4°C | 12.6°C | 149 mm | 78% | 0.6 m/s | 6.3 |
| 2010 🔥 | 28.9°C | 23.9°C | 18.9°C | 33.0°C | 13.6°C | 87 mm | 78% | 0.5 m/s | 6.3 |
| 2009 | 26.6°C | 22.1°C | 17.5°C | 30.3°C | 13.1°C | 138 mm | 81% | 0.5 m/s | 6.1 |
| 2008 | 29.9°C | 23.5°C | 17.1°C | 33.4°C | 11.4°C | 58 mm | 63% | 0.6 m/s | 6.7 |
| 2007 | 30.4°C | 23.5°C | 16.6°C | 34.3°C | 12.9°C | 88 mm | 60% | 0.5 m/s | 6.3 |
| 2006 | 27.5°C | 21.6°C | 15.7°C | 34.2°C | 10.6°C | 87 mm | 70% | 0.6 m/s | 6.3 |
| 2005 | 26.7°C | 21.5°C | 16.3°C | 31.1°C | 11.6°C | 109 mm | 79% | 0.5 m/s | 6 |
| 2004 | 26.5°C | 21.7°C | 16.8°C | 29.8°C | 11.4°C | 125 mm | 80% | 0.5 m/s | 5.6 |
| 2003 | 24.8°C | 19.9°C | 14.9°C | 28.3°C | 5.4°C | 126 mm | 81% | 0.5 m/s | 5.8 |
| 2002 | 29.1°C | 22.7°C | 16.3°C | 33.6°C | 11.6°C | 62 mm | 68% | 0.5 m/s | 6.4 |
| 2001 | 27.3°C | 21.2°C | 15.2°C | 31.6°C | 10.2°C | 120 mm | 72% | 0.5 m/s | 6.1 |
| 2000 | 27.8°C | 22.0°C | 16.3°C | 31.9°C | 6.7°C | 108 mm | 71% | 0.6 m/s | 5.8 |
| 1999 | 27.4°C | 21.6°C | 15.8°C | 31.6°C | 9.2°C | 141 mm | 72% | 0.6 m/s | 5.8 |
| 1998 | 26.4°C | 21.9°C | 17.5°C | 31.2°C | 6.9°C | 159 mm | 84% | 0.6 m/s | 5.7 |
| 1997 | 24.5°C | 19.8°C | 15.2°C | 29.6°C | 8.7°C | 146 mm | 83% | 0.5 m/s | 5.3 |
| 1996 | 26.7°C | 21.4°C | 16.1°C | 32.7°C | 10.9°C | 96 mm | 77% | 0.5 m/s | 6.2 |
| 1995 | 26.4°C | 21.1°C | 15.7°C | 30.9°C | 9.5°C | 112 mm | 75% | 0.5 m/s | 5.6 |
| 1994 | 27.0°C | 22.1°C | 17.3°C | 30.6°C | 13.5°C | 141 mm | 81% | 0.5 m/s | 5.8 |
| 1993 | 28.3°C | 22.3°C | 16.2°C | 32.2°C | 8.0°C | 49 mm | 72% | 0.5 m/s | 6.2 |
| 1992 ❄️ | 25.0°C | 19.7°C | 14.4°C | 29.6°C | 6.6°C | 117 mm | 81% | 0.5 m/s | 5 |
| 1991 | 25.7°C | 21.1°C | 16.5°C | 30.1°C | 10.4°C | 137 mm | 82% | 0.4 m/s | 5.6 |
| 1990 | 26.3°C | 20.9°C | 15.5°C | 30.9°C | 9.7°C | 50 mm | 77% | 0.6 m/s | 6.3 |
| 1989 🌧️ | 24.6°C | 20.4°C | 16.2°C | 28.9°C | 11.9°C | 239 mm | 85% | 0.6 m/s | 5.2 |
| 1988 | 30.3°C | 22.5°C | 14.6°C | 36.7°C | 6.3°C | 41 mm | 51% | 0.6 m/s | 6.6 |
| 1987 | 26.9°C | 21.6°C | 16.4°C | 29.1°C | 9.8°C | 104 mm | 78% | 0.5 m/s | 6.2 |
| 1986 | 30.0°C | 23.4°C | 16.8°C | 33.2°C | 11.6°C | 49 mm | 64% | 0.6 m/s | 6.4 |
| 1985 | 27.8°C | 21.7°C | 15.6°C | 31.6°C | 7.6°C | 118 mm | 68% | 0.6 m/s | 6 |
| 1984 | 26.8°C | 21.7°C | 16.6°C | 30.9°C | 6.9°C | 109 mm | 78% | 0.5 m/s | 6.3 |
| 1983 | 25.7°C | 20.3°C | 15.0°C | 31.2°C | 8.7°C | 91 mm | 78% | 0.5 m/s | — |
| 1982 | 25.7°C | 20.6°C | 15.5°C | 28.4°C | 12.0°C | 96 mm | 79% | 0.5 m/s | — |
| 1981 | 28.0°C | 22.5°C | 17.0°C | 32.9°C | 12.3°C | 127 mm | 76% | 0.6 m/s | — |
Actual recorded June data for each year, 1981–2025 — sourced from NASA POWER.
The average high in June is around 27.3°C with lows near 16.4°C (mean 21.9°C), based on 45 years of NASA POWER data.
June averages 108 mm of rainfall in Morristown, about average for rainfall. The wettest on record was 239 mm in 1989.
The hottest June reached 38.9°C in 2012. The coldest dipped to 5.4°C in 2003.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average June temperatures have risen by about 0.9°C. Daytime highs moved from 26.8°C to 28°C and overnight lows from 15.9°C to 16.7°C over the same span.
June is one of the warmer months of the year in Morristown and about average for rainfall, so plan for around 27.3°C daytime highs and 16.4°C at night.
Not quite — June is the 10th coolest month in Morristown, averaging 21.9°C.
For June in Morristown, pack light layers you can adjust through the day, with typical highs of 27.3°C and lows of 16.4°C. Bring an umbrella or light rain jacket too.
Relative humidity in June averages 75% — quite humid.
Average wind speed in June is 0.5 m/s. The windiest June on record averaged 0.6 m/s (1981).
The wettest June on record was 1989 with 239 mm. On average, June sees 108 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 Morristown behaves each June, 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 June specifically, along with year-by-year records and how the month has changed over the decades.
