June is one of the warmer months of the year in Fredericton, with average highs near 20.7°C and lows around 10°C (mean 15.4°C). It is about average for rainfall, averaging 101 mm of rainfall and 82% relative humidity across the period.
June is one of the warmer months of the year in Fredericton. Across 45 years of records, the warmest June in Fredericton was 2021 — when the month averaged 17.8°C — while the coldest was 1986 at 13.1°C. Typical June days reach 20.7°C with nights near 10°C. The long-term trend is warming, about 0.2°C per decade.
June is about average for rainfall in Fredericton, averaging 101 mm of rainfall. The wettest June on record was 1984 with 186 mm, while the driest was 1983 at 32 mm.
Relative humidity in Fredericton during June averages 82%. The most humid June was 2023 at 87%, and the least humid was 1986 at 79%.
June receives about 5.5 kWh/m²/day of solar energy in Fredericton. The sunniest June was 1988 at 6.4 kWh/m²/day, and the cloudiest was 2023 at 4.3.
Average wind speed in Fredericton during June is 0.1 m/s. The windiest Junes were 1994, 1999 and 2000, among others at 0.2 m/s, while the calmest were 2023, 2024 and 2025, 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 | 14.8°C | 15.8°C | 15.4°C | 14.9°C | 16.3°C | +1.5°C |
| Avg High | 20.0°C | 21.4°C | 20.8°C | 20.1°C | 21.7°C | +1.7°C |
| Avg Low | 9.5°C | 10.2°C | 10.1°C | 9.7°C | 11.0°C | +1.5°C |
| Avg Rain | 100 mm | 94 mm | 96 mm | 124 mm | 84 mm | -16 mm |
June temperatures in Fredericton have risen by about 1.5°C between 1981–1985 and 2021–2025.
June has ranged from a record low of 0.9°C (2020) to a record high of 32.2°C (2025).
Rainfall in June is about average for rainfall, averaging 101 mm, with a wettest year of 186 mm.
One of the best times to visit Fredericton
June is one of the best times to visit Fredericton. Expect days averaging 20.7°C and nights around 10°C (mean 15.4°C) — warmer than Fredericton'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 | 21.7°C | 16.3°C | 10.9°C | 32.2°C | 6.7°C | 89 mm | 81% | 0.1 m/s | 5.6 |
| 2024 | 22.7°C | 17.3°C | 11.9°C | 31.8°C | 5.2°C | 83 mm | 83% | 0.1 m/s | 5.7 |
| 2023 | 19.5°C | 14.7°C | 10.0°C | 31.6°C | 2.4°C | 142 mm | 87% | 0.1 m/s | 4.3 |
| 2022 | 20.8°C | 15.3°C | 9.9°C | 28.0°C | 3.6°C | 92 mm | 83% | 0.1 m/s | 5.7 |
| 2021 🔥 | 23.2°C | 17.8°C | 12.5°C | 31.0°C | 5.2°C | 57 mm | 81% | 0.1 m/s | 6.1 |
| 2020 | 22.4°C | 16.5°C | 10.7°C | 31.0°C | 0.9°C | 40 mm | 81% | 0.1 m/s | 6.2 |
| 2019 | 20.4°C | 14.9°C | 9.5°C | 24.2°C | 4.5°C | 115 mm | 82% | 0.1 m/s | 5.8 |
| 2018 | 19.5°C | 13.7°C | 7.9°C | 27.9°C | 1.1°C | 124 mm | 80% | 0.1 m/s | 6.1 |
| 2017 | 21.1°C | 15.9°C | 10.7°C | 28.2°C | 3.2°C | 73 mm | 83% | 0.1 m/s | 5.6 |
| 2016 | 20.4°C | 15.0°C | 9.6°C | 26.7°C | 4.8°C | 89 mm | 82% | 0.1 m/s | 5.6 |
| 2015 | 18.4°C | 13.4°C | 8.4°C | 24.0°C | 2.8°C | 146 mm | 83% | 0.1 m/s | 5.5 |
| 2014 | 21.2°C | 15.9°C | 10.6°C | 28.1°C | 3.8°C | 146 mm | 82% | 0.1 m/s | 5.6 |
| 2013 | 20.2°C | 15.3°C | 10.5°C | 28.7°C | 5.7°C | 136 mm | 84% | 0.1 m/s | 5 |
| 2012 | 20.0°C | 15.0°C | 9.9°C | 27.4°C | 5.5°C | 132 mm | 84% | 0.1 m/s | 5.4 |
| 2011 | 19.7°C | 14.6°C | 9.6°C | 26.3°C | 4.0°C | 104 mm | 84% | 0.1 m/s | 5.2 |
| 2010 | 20.2°C | 15.4°C | 10.6°C | 27.1°C | 6.3°C | 178 mm | 84% | 0.1 m/s | 5.1 |
| 2009 | 19.9°C | 15.2°C | 10.6°C | 26.1°C | 3.4°C | 136 mm | 84% | 0.1 m/s | 4.9 |
| 2008 | 21.1°C | 15.8°C | 10.6°C | 27.1°C | 6.3°C | 113 mm | 85% | 0.1 m/s | 5 |
| 2007 | 21.3°C | 15.5°C | 9.8°C | 26.7°C | 4.9°C | 67 mm | 81% | 0.1 m/s | 5.9 |
| 2006 | 21.3°C | 16.6°C | 11.9°C | 26.5°C | 6.9°C | 169 mm | 86% | 0.1 m/s | 4.4 |
| 2005 | 21.9°C | 16.1°C | 10.4°C | 30.0°C | 5.4°C | 77 mm | 84% | 0.1 m/s | 5.4 |
| 2004 | 18.4°C | 13.3°C | 8.2°C | 27.7°C | 3.9°C | 78 mm | 82% | 0.1 m/s | 5.5 |
| 2003 | 21.6°C | 16.0°C | 10.3°C | 31.7°C | 3.3°C | 86 mm | 81% | 0.1 m/s | 6 |
| 2002 | 19.5°C | 14.1°C | 8.7°C | 26.9°C | 1.5°C | 66 mm | 80% | 0.1 m/s | 5.6 |
| 2001 | 22.6°C | 17.0°C | 11.5°C | 31.1°C | 6.4°C | 89 mm | 81% | 0.1 m/s | 5.9 |
| 2000 | 20.3°C | 14.7°C | 9.2°C | 28.4°C | 1.7°C | 75 mm | 79% | 0.2 m/s | 5.4 |
| 1999 | 23.3°C | 17.5°C | 11.6°C | 30.4°C | 5.9°C | 64 mm | 79% | 0.2 m/s | 6.3 |
| 1998 | 20.3°C | 15.2°C | 10.1°C | 26.7°C | 2.8°C | 103 mm | 84% | 0.1 m/s | 4.8 |
| 1997 | 21.0°C | 15.3°C | 9.6°C | 29.0°C | 3.8°C | 83 mm | 81% | 0.1 m/s | 6 |
| 1996 | 20.8°C | 15.2°C | 9.6°C | 27.7°C | 4.0°C | 89 mm | 84% | 0.1 m/s | 5.5 |
| 1995 | 22.6°C | 16.7°C | 10.7°C | 29.3°C | 5.2°C | 68 mm | 81% | 0.1 m/s | 5.9 |
| 1994 | 22.0°C | 16.7°C | 11.4°C | 31.3°C | 4.4°C | 110 mm | 83% | 0.2 m/s | 5.6 |
| 1993 | 20.3°C | 14.9°C | 9.5°C | 27.7°C | 4.0°C | 145 mm | 83% | 0.1 m/s | 5.5 |
| 1992 | 20.5°C | 15.1°C | 9.7°C | 25.7°C | 4.4°C | 141 mm | 84% | 0.1 m/s | 5.7 |
| 1991 | 21.4°C | 15.7°C | 10.0°C | 27.9°C | 5.2°C | 67 mm | 79% | 0.1 m/s | 6 |
| 1990 | 21.5°C | 15.9°C | 10.3°C | 26.0°C | 3.9°C | 71 mm | 83% | 0.1 m/s | 5.6 |
| 1989 | 20.7°C | 15.7°C | 10.6°C | 28.1°C | 5.2°C | 65 mm | 83% | 0.1 m/s | 5.2 |
| 1988 | 19.9°C | 14.4°C | 8.8°C | 29.6°C | 1.2°C | 65 mm | 79% | 0.1 m/s | 6.4 |
| 1987 | 20.6°C | 15.4°C | 10.1°C | 27.1°C | 5.8°C | 114 mm | 81% | 0.1 m/s | 5.7 |
| 1986 ❄️ | 18.7°C | 13.1°C | 7.6°C | 25.3°C | 1.6°C | 58 mm | 79% | 0.2 m/s | 5.9 |
| 1985 | 19.1°C | 14.1°C | 9.0°C | 23.2°C | 3.6°C | 142 mm | 83% | 0.1 m/s | 5 |
| 1984 🌧️ | 19.6°C | 14.7°C | 9.8°C | 28.8°C | 3.9°C | 186 mm | 84% | 0.1 m/s | 5 |
| 1983 | 21.7°C | 16.0°C | 10.3°C | 29.5°C | 3.9°C | 32 mm | 81% | 0.1 m/s | — |
| 1982 | 19.2°C | 14.2°C | 9.1°C | 24.0°C | 3.5°C | 117 mm | 81% | 0.1 m/s | — |
| 1981 | 20.4°C | 15.2°C | 9.9°C | 27.7°C | 3.9°C | 120 mm | 83% | 0.1 m/s | — |
Actual recorded June data for each year, 1981–2025 — sourced from NASA POWER.
The average high in June is around 20.7°C with lows near 10°C (mean 15.4°C), based on 45 years of NASA POWER data.
June averages 101 mm of rainfall in Fredericton, about average for rainfall. The wettest on record was 186 mm in 1984.
The hottest June reached 32.2°C in 2025. The coldest dipped to 0.9°C in 2020.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average June temperatures have risen by about 1.5°C. Daytime highs moved from 20°C to 21.6°C and overnight lows from 9.6°C to 11°C over the same span.
June is one of the warmer months of the year in Fredericton and about average for rainfall, so plan for around 20.7°C daytime highs and 10°C at night.
Not quite — June is the 10th coolest month in Fredericton, averaging 15.4°C.
For June in Fredericton, pack light layers you can adjust through the day, with typical highs of 20.7°C and lows of 10°C. Bring an umbrella or light rain jacket too.
Relative humidity in June averages 82% — quite humid.
Average wind speed in June is 0.1 m/s. The windiest June on record averaged 0.2 m/s (1986).
The wettest June on record was 1984 with 186 mm. On average, June 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 Fredericton 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.
