Historic Weather

June 2024

Temperature

  • Average high: Around 20 °C (68 °F)

  • Average low: About 8–11 °C (46–52 °F)

  • Early-month extremes:

    • Daily low dipped to ~3.4 °C on June 1 at YQM Moncton (nearby proxy)

    • June 20: A record-breaking spike with 34.5 °C recorded at Saint John Airport — the highest June temperature on record locally

Local reports from June 21–22 confirmed mid-30s°C readings, with Reddit users noting:

 

🌧️ Precipitation & Humidity

  • Total rainfall: Approximately 96 mm — close to normal for June

  • Rainy days: Around 12–13 days with measurable precipitation

  • Humidity: Mean relative humidity hovered between 70–82%

☀️ Sunshine, Sea & Daylight

  • Average sunshine: About 7–8 hours/day

  • Sea temperature: Cold, averaging 6–9 °C (43–49 °F) — chilly for swimming

  • Daylight: Long summer days with ~15½ hours, sunrise ~5:40 am, sunset ~9:10 pm local time

⚠️ Notable Events

  • Heat dome from June 18–20 pushed highs past 30°C for several days

  • Severe thunderstorms and even tiny tornadoes (EF‑0) touched down in central and northern NB on June 30

✅ June 2024 Summary: Saint John, NB

  • Temperatures: Normals around 20 °C (range 8–11 °C), but experienced an exceptional heatwave hitting a record 34.5 °C.

  • Rainfall: Near-normal, ~96 mm spread over ~13 days.

  • Sunshine & daylight: Warm and long sunny days, but coastal sea temp remained brisk (~6–9 °C).

  • Severe weather: Heat dome and late-month storms with minor tornadic activity.