June is one of the warmer months of the year in Fort St. John, with average highs near 18.5°C and lows around 7.5°C (mean 13°C). It is a relatively wet time of year, averaging 87 mm of rainfall and 72% relative humidity across the period.
June is one of the warmer months of the year in Fort St. John. Across 45 years of records, the warmest June in Fort St. John was 2021 — when the month averaged 15.3°C — while the coldest was 1981 at 10.8°C. Typical June days reach 18.5°C with nights near 7.5°C. The long-term trend is warming, about 0.2°C per decade.
June is a relatively wet time of year in Fort St. John, averaging 87 mm of rainfall. The wettest June on record was 2011 with 161 mm, while the driest was 2010 at 17 mm.
Relative humidity in Fort St. John during June averages 72%. The most humid June was 2020 at 78%, and the least humid was 2006 at 59%.
June receives about 6.1 kWh/m²/day of solar energy in Fort St. John. The sunniest June was 2006 at 7 kWh/m²/day, and the cloudiest were 2001 and 2011 at 5.4.
Average wind speed in Fort St. John during June is 0.5 m/s. The windiest Junes were 1987, 2006 and 2012, among others at 0.6 m/s, while the calmest were 1983, 2004 and 2005 at 0.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 12.6°C | 12.8°C | 13.0°C | 13.2°C | 13.4°C | +0.8°C |
| Avg High | 18.2°C | 18.2°C | 18.7°C | 18.5°C | 18.7°C | +0.5°C |
| Avg Low | 6.9°C | 7.3°C | 7.3°C | 8.0°C | 8.1°C | +1.2°C |
| Avg Rain | 82 mm | 95 mm | 68 mm | 101 mm | 92 mm | +10 mm |
June temperatures in Fort St. John have risen by about 1.4°C between 1981–1985 and 2021–2025.
June has ranged from a record low of -1.3°C (2009) to a record high of 39.5°C (2021).
Rainfall in June is a relatively wet time of year, averaging 87 mm, with a wettest year of 161 mm.
One of the best times to visit Fort St. John
June is one of the best times to visit Fort St. John. Expect days averaging 18.5°C and nights around 7.5°C (mean 13°C) — warmer than Fort St. John's yearly average — with higher rainfall (87 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 | 18.4°C | 13.1°C | 7.8°C | 24.7°C | 3.6°C | 95 mm | 69% | 0.5 m/s | 5.8 |
| 2024 | 17.4°C | 12.1°C | 6.7°C | 26.3°C | 3.1°C | 133 mm | 72% | 0.5 m/s | 5.7 |
| 2023 | 20.5°C | 14.6°C | 8.7°C | 27.2°C | 1.6°C | 50 mm | 71% | 0.5 m/s | 6.4 |
| 2022 | 18.4°C | 13.2°C | 7.9°C | 24.7°C | 4.7°C | 78 mm | 77% | 0.5 m/s | 6 |
| 2021 🔥 | 21.0°C | 15.3°C | 9.6°C | 39.5°C | 3.1°C | 48 mm | 73% | 0.5 m/s | 6.5 |
| 2020 | 16.7°C | 12.2°C | 7.8°C | 24.7°C | 2.9°C | 148 mm | 78% | 0.5 m/s | 5.8 |
| 2019 | 17.9°C | 12.9°C | 7.9°C | 24.1°C | 2.1°C | 61 mm | 72% | 0.5 m/s | 5.5 |
| 2018 | 18.7°C | 13.6°C | 8.5°C | 31.0°C | 3.2°C | 125 mm | 75% | 0.5 m/s | 5.8 |
| 2017 | 18.3°C | 12.9°C | 7.4°C | 24.6°C | 1.4°C | 90 mm | 75% | 0.5 m/s | 6.3 |
| 2016 | 19.7°C | 14.5°C | 9.2°C | 26.9°C | 5.0°C | 145 mm | 73% | 0.5 m/s | 6.2 |
| 2015 | 19.3°C | 13.9°C | 8.6°C | 27.4°C | 2.8°C | 79 mm | 75% | 0.5 m/s | 6.2 |
| 2014 | 18.3°C | 12.8°C | 7.2°C | 23.1°C | 1.6°C | 114 mm | 74% | 0.5 m/s | 6.5 |
| 2013 | 18.6°C | 13.5°C | 8.5°C | 28.8°C | 4.0°C | 98 mm | 77% | 0.5 m/s | 5.9 |
| 2012 | 17.6°C | 12.8°C | 7.9°C | 22.5°C | 3.7°C | 121 mm | 75% | 0.6 m/s | 5.7 |
| 2011 🌧️ | 17.1°C | 12.1°C | 7.0°C | 21.2°C | 1.1°C | 161 mm | 77% | 0.5 m/s | 5.4 |
| 2010 | 19.0°C | 13.1°C | 7.3°C | 24.6°C | 1.8°C | 17 mm | 64% | 0.5 m/s | 6.7 |
| 2009 | 18.0°C | 11.8°C | 5.6°C | 24.9°C | -1.3°C | 63 mm | 69% | 0.5 m/s | 6.7 |
| 2008 | 18.8°C | 12.7°C | 6.6°C | 26.1°C | 1.2°C | 23 mm | 67% | 0.5 m/s | 6.6 |
| 2007 | 18.4°C | 13.1°C | 7.8°C | 24.5°C | 4.2°C | 66 mm | 73% | 0.5 m/s | 5.9 |
| 2006 | 21.4°C | 14.9°C | 8.4°C | 29.8°C | 3.8°C | 32 mm | 59% | 0.6 m/s | 7 |
| 2005 | 18.0°C | 12.7°C | 7.4°C | 22.5°C | 3.0°C | 68 mm | 74% | 0.4 m/s | 5.5 |
| 2004 | 20.6°C | 14.6°C | 8.6°C | 28.1°C | 2.7°C | 62 mm | 69% | 0.4 m/s | 6.1 |
| 2003 | 17.7°C | 12.2°C | 6.7°C | 23.2°C | 3.6°C | 96 mm | 73% | 0.5 m/s | 6.1 |
| 2002 | 19.7°C | 13.6°C | 7.6°C | 29.1°C | 2.1°C | 87 mm | 73% | 0.5 m/s | 6.6 |
| 2001 | 16.9°C | 11.7°C | 6.6°C | 23.0°C | 2.6°C | 106 mm | 76% | 0.5 m/s | 5.4 |
| 2000 | 17.8°C | 12.5°C | 7.3°C | 25.6°C | 3.0°C | 80 mm | 72% | 0.5 m/s | 5.8 |
| 1999 | 17.1°C | 11.7°C | 6.2°C | 24.0°C | 0.8°C | 85 mm | 72% | 0.5 m/s | 5.8 |
| 1998 | 20.2°C | 14.3°C | 8.4°C | 26.3°C | 2.6°C | 54 mm | 68% | 0.5 m/s | 6.2 |
| 1997 | 17.5°C | 12.4°C | 7.4°C | 20.9°C | 3.1°C | 108 mm | 76% | 0.5 m/s | 6.2 |
| 1996 | 16.2°C | 11.0°C | 5.8°C | 20.6°C | 0.4°C | 59 mm | 75% | 0.5 m/s | 6.2 |
| 1995 | 19.4°C | 13.5°C | 7.7°C | 26.0°C | 4.2°C | 90 mm | 73% | 0.5 m/s | 6.1 |
| 1994 | 18.3°C | 13.0°C | 7.7°C | 25.3°C | 0.5°C | 107 mm | 75% | 0.5 m/s | 5.9 |
| 1993 | 18.2°C | 12.6°C | 7.0°C | 23.0°C | 3.9°C | 156 mm | 71% | 0.5 m/s | 5.7 |
| 1992 | 19.9°C | 14.3°C | 8.6°C | 25.8°C | 4.3°C | 43 mm | 71% | 0.5 m/s | 6.5 |
| 1991 | 17.5°C | 12.3°C | 7.2°C | 24.1°C | 1.2°C | 104 mm | 73% | 0.5 m/s | 5.8 |
| 1990 | 18.2°C | 12.8°C | 7.4°C | 25.5°C | 0.9°C | 138 mm | 76% | 0.5 m/s | 6.1 |
| 1989 | 20.3°C | 14.3°C | 8.4°C | 28.7°C | 4.0°C | 73 mm | 69% | 0.5 m/s | 6.6 |
| 1988 | 18.3°C | 12.5°C | 6.7°C | 24.2°C | 2.1°C | 110 mm | 70% | 0.5 m/s | 6.3 |
| 1987 | 18.7°C | 13.0°C | 7.3°C | 23.3°C | 2.7°C | 119 mm | 71% | 0.6 m/s | 6.6 |
| 1986 | 17.5°C | 11.8°C | 6.0°C | 22.4°C | 0.6°C | 34 mm | 69% | 0.6 m/s | 6.8 |
| 1985 | 17.8°C | 11.6°C | 5.5°C | 26.0°C | 1.9°C | 62 mm | 64% | 0.5 m/s | 6.5 |
| 1984 | 16.8°C | 11.7°C | 6.5°C | 22.0°C | 1.5°C | 111 mm | 75% | 0.5 m/s | 5.9 |
| 1983 | 18.1°C | 12.7°C | 7.3°C | 23.3°C | 2.8°C | 144 mm | 75% | 0.4 m/s | — |
| 1982 | 20.9°C | 14.7°C | 8.6°C | 28.4°C | 1.2°C | 35 mm | 71% | 0.5 m/s | — |
| 1981 ❄️ | 15.8°C | 10.8°C | 5.7°C | 21.2°C | 2.0°C | 49 mm | 74% | 0.5 m/s | — |
Actual recorded June data for each year, 1981–2025 — sourced from NASA POWER.
The average high in June is around 18.5°C with lows near 7.5°C (mean 13°C), based on 45 years of NASA POWER data.
June averages 87 mm of rainfall in Fort St. John, a relatively wet time of year. The wettest on record was 161 mm in 2011.
The hottest June reached 39.5°C in 2021. The coldest dipped to -1.3°C in 2009.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average June temperatures have risen by about 1.4°C. Daytime highs moved from 17.9°C to 19.1°C and overnight lows from 6.7°C to 8.1°C over the same span.
June is one of the warmer months of the year in Fort St. John and a relatively wet time of year, so plan for around 18.5°C daytime highs and 7.5°C at night.
Not quite — June is the 10th coolest month in Fort St. John, averaging 13°C.
For June in Fort St. John, pack warm layers and a jacket for chilly mornings, with typical highs of 18.5°C and lows of 7.5°C. Bring an umbrella or light rain jacket too.
Relative humidity in June averages 72% — moderately humid.
Average wind speed in June is 0.5 m/s. The windiest June on record averaged 0.6 m/s (1986).
The wettest June on record was 2011 with 161 mm. On average, June sees 87 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 Fort St. John 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.
