June is one of the warmer months of the year in Hartford, with average highs near 24.5°C and lows around 13.2°C (mean 18.9°C). It is about average for rainfall, averaging 105 mm of rainfall and 77% relative humidity across the period.
June is one of the warmer months of the year in Hartford. Across 45 years of records, the warmest June in Hartford was 1999 — when the month averaged 21.3°C — while the coldest was 1982 at 16.3°C. Typical June days reach 24.5°C with nights near 13.2°C. The long-term trend is warming, about 0.4°C per decade.
June is about average for rainfall in Hartford, averaging 105 mm of rainfall. The wettest June on record was 1982 with 285 mm, while the driest was 1988 at 32 mm.
Relative humidity in Hartford during June averages 77%. The most humid June was 2006 at 85%, and the least humid was 1999 at 62%.
June receives about 6 kWh/m²/day of solar energy in Hartford. The sunniest Junes were 1988 and 2016 at 6.8 kWh/m²/day, and the cloudiest was 2009 at 4.8.
Average wind speed in Hartford during June is 0.1 m/s. The windiest Junes were 2019, 2022 and 2023, among others at 0.1 m/s, while the calmest were 2021, 2024 and 2025, among others at 0 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 17.9°C | 18.9°C | 19.0°C | 19.0°C | 19.9°C | +2°C |
| Avg High | 23.6°C | 24.7°C | 24.5°C | 24.5°C | 25.6°C | +2°C |
| Avg Low | 12.3°C | 13.0°C | 13.5°C | 13.5°C | 14.1°C | +1.8°C |
| Avg Rain | 116 mm | 77 mm | 120 mm | 122 mm | 78 mm | -38 mm |
June temperatures in Hartford have risen by about 1.9°C between 1981–1985 and 2021–2025.
June has ranged from a record low of 2.6°C (2000) to a record high of 35.8°C (1999).
Rainfall in June is about average for rainfall, averaging 105 mm, with a wettest year of 285 mm.
One of the best times to visit Hartford
June is one of the best times to visit Hartford. Expect days averaging 24.5°C and nights around 13.2°C (mean 18.9°C) — warmer than Hartford's yearly average — with higher rainfall (105 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 | 25.6°C | 20.2°C | 14.8°C | 34.1°C | 6.7°C | 56 mm | 80% | 0 m/s | 5.6 |
| 2024 | 26.0°C | 20.4°C | 14.7°C | 34.0°C | 9.6°C | 116 mm | 80% | 0 m/s | 6.6 |
| 2023 | 23.6°C | 18.3°C | 12.9°C | 32.6°C | 6.8°C | 89 mm | 80% | 0.1 m/s | 5.4 |
| 2022 | 25.3°C | 19.2°C | 13.2°C | 33.3°C | 8.0°C | 77 mm | 72% | 0.1 m/s | 6.2 |
| 2021 | 26.7°C | 20.9°C | 15.1°C | 35.8°C | 8.4°C | 61 mm | 76% | 0 m/s | 6.4 |
| 2020 | 26.4°C | 20.3°C | 14.1°C | 31.6°C | 4.4°C | 67 mm | 74% | 0 m/s | 6.4 |
| 2019 | 24.1°C | 18.9°C | 13.6°C | 30.8°C | 5.8°C | 111 mm | 79% | 0.1 m/s | 5.9 |
| 2018 | 24.1°C | 18.5°C | 12.9°C | 31.1°C | 8.0°C | 109 mm | 77% | 0.1 m/s | 6 |
| 2017 | 24.0°C | 18.7°C | 13.3°C | 30.9°C | 7.3°C | 104 mm | 79% | 0.1 m/s | 6 |
| 2016 | 26.0°C | 19.7°C | 13.4°C | 32.5°C | 8.3°C | 48 mm | 67% | 0.1 m/s | 6.8 |
| 2015 | 23.8°C | 18.4°C | 13.1°C | 28.5°C | 6.2°C | 156 mm | 79% | 0.1 m/s | 5.4 |
| 2014 | 24.8°C | 19.1°C | 13.5°C | 29.2°C | 7.3°C | 71 mm | 78% | 0 m/s | 6.3 |
| 2013 | 24.3°C | 19.3°C | 14.2°C | 29.8°C | 8.9°C | 255 mm | 82% | 0.1 m/s | 6 |
| 2012 | 24.5°C | 18.7°C | 12.8°C | 33.0°C | 7.8°C | 108 mm | 76% | 0.1 m/s | 6.2 |
| 2011 | 23.7°C | 18.6°C | 13.5°C | 29.3°C | 8.2°C | 160 mm | 82% | 0.1 m/s | 5.9 |
| 2010 | 25.7°C | 20.2°C | 14.6°C | 31.5°C | 8.5°C | 95 mm | 78% | 0.1 m/s | 5.9 |
| 2009 | 22.4°C | 17.7°C | 13.0°C | 26.8°C | 3.2°C | 165 mm | 83% | 0.1 m/s | 4.8 |
| 2008 | 25.3°C | 19.9°C | 14.6°C | 33.8°C | 9.9°C | 122 mm | 81% | 0 m/s | 6 |
| 2007 | 24.4°C | 18.8°C | 13.1°C | 32.5°C | 6.3°C | 85 mm | 78% | 0 m/s | 6.2 |
| 2006 | 23.3°C | 19.0°C | 14.6°C | 30.0°C | 8.4°C | 218 mm | 85% | 0 m/s | 5 |
| 2005 | 26.4°C | 20.6°C | 14.8°C | 34.3°C | 8.7°C | 68 mm | 80% | 0 m/s | 6 |
| 2004 | 24.1°C | 18.2°C | 12.4°C | 30.2°C | 7.4°C | 53 mm | 75% | 0.1 m/s | 6.2 |
| 2003 | 23.3°C | 18.1°C | 12.9°C | 35.4°C | 7.7°C | 127 mm | 82% | 0.1 m/s | 5.1 |
| 2002 | 25.6°C | 19.1°C | 12.6°C | 34.0°C | 6.4°C | 89 mm | 73% | 0.1 m/s | 6.2 |
| 2001 | 26.6°C | 20.4°C | 14.3°C | 32.1°C | 4.1°C | 125 mm | 74% | 0.1 m/s | 6.4 |
| 2000 | 23.9°C | 18.4°C | 12.9°C | 29.4°C | 2.6°C | 144 mm | 81% | 0.1 m/s | 5.4 |
| 1999 🔥 | 28.2°C | 21.3°C | 14.3°C | 35.8°C | 8.5°C | 33 mm | 62% | 0.1 m/s | 6.5 |
| 1998 | 22.8°C | 17.9°C | 13.0°C | 29.0°C | 5.1°C | 198 mm | 81% | 0 m/s | 5.3 |
| 1997 | 24.6°C | 18.4°C | 12.2°C | 31.7°C | 5.4°C | 35 mm | 75% | 0.1 m/s | 6.3 |
| 1996 | 23.7°C | 18.6°C | 13.5°C | 27.6°C | 6.9°C | 83 mm | 82% | 0 m/s | 5.6 |
| 1995 | 25.9°C | 19.4°C | 12.9°C | 32.7°C | 6.6°C | 48 mm | 70% | 0.1 m/s | 5.9 |
| 1994 | 25.5°C | 19.8°C | 14.1°C | 32.5°C | 6.6°C | 79 mm | 78% | 0 m/s | 5.7 |
| 1993 | 24.4°C | 18.4°C | 12.4°C | 29.2°C | 5.0°C | 52 mm | 74% | 0.1 m/s | 6.4 |
| 1992 | 23.3°C | 17.2°C | 11.2°C | 27.7°C | 7.1°C | 134 mm | 79% | 0 m/s | 6.5 |
| 1991 | 25.4°C | 19.3°C | 13.3°C | 33.7°C | 7.6°C | 50 mm | 73% | 0.1 m/s | 6.3 |
| 1990 | 23.5°C | 18.2°C | 12.9°C | 27.2°C | 6.3°C | 62 mm | 82% | 0 m/s | 6 |
| 1989 | 23.6°C | 18.6°C | 13.6°C | 29.0°C | 9.8°C | 156 mm | 84% | 0 m/s | 5.4 |
| 1988 | 24.1°C | 17.8°C | 11.6°C | 32.4°C | 6.0°C | 32 mm | 70% | 0.1 m/s | 6.8 |
| 1987 | 24.0°C | 18.5°C | 13.1°C | 27.9°C | 5.9°C | 81 mm | 80% | 0 m/s | 6 |
| 1986 | 22.8°C | 16.9°C | 11.0°C | 27.4°C | 3.4°C | 149 mm | 77% | 0 m/s | 6.3 |
| 1985 | 22.7°C | 16.9°C | 11.1°C | 27.3°C | 7.1°C | 104 mm | 73% | 0.1 m/s | 5.4 |
| 1984 | 24.2°C | 18.8°C | 13.4°C | 30.8°C | 6.1°C | 78 mm | 83% | 0 m/s | 5.8 |
| 1983 | 24.6°C | 18.8°C | 13.0°C | 32.2°C | 4.7°C | 77 mm | 79% | 0.1 m/s | — |
| 1982 ❄️ 🌧️ | 21.3°C | 16.3°C | 11.2°C | 26.6°C | 7.5°C | 285 mm | 83% | 0.1 m/s | — |
| 1981 | 25.3°C | 18.9°C | 12.6°C | 32.5°C | 6.5°C | 83 mm | 73% | 0.1 m/s | — |
Actual recorded June data for each year, 1981–2025 — sourced from NASA POWER.
The average high in June is around 24.5°C with lows near 13.2°C (mean 18.9°C), based on 45 years of NASA POWER data.
June averages 105 mm of rainfall in Hartford, about average for rainfall. The wettest on record was 285 mm in 1982.
The hottest June reached 35.8°C in 1999. The coldest dipped to 2.6°C in 2000.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average June temperatures have risen by about 1.9°C. Daytime highs moved from 23.6°C to 25.4°C and overnight lows from 12.3°C to 14.1°C over the same span.
June is one of the warmer months of the year in Hartford and about average for rainfall, so plan for around 24.5°C daytime highs and 13.2°C at night.
Not quite — June is the 10th coolest month in Hartford, averaging 18.9°C.
For June in Hartford, pack light layers you can adjust through the day, with typical highs of 24.5°C and lows of 13.2°C. Bring an umbrella or light rain jacket too.
Relative humidity in June averages 77% — quite humid.
Average wind speed in June is 0.1 m/s. The windiest June on record averaged 0.1 m/s (1981).
The wettest June on record was 1982 with 285 mm. On average, June sees 105 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 Hartford 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.
