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Saint John, New Brunswick Climate & Temperature

  • Saint John, New Brunswick, Canada is at 4519'N, 6553'W, 109 m (357 ft). See map.
  • Saint John, New Brunswick has a humid continental climate with severe winters, no dry season, warm summers and strong seasonality (Kppen-Geiger classification: Dfb).
  • According to the Holdridge life zones system of bioclimatic classification Saint John, New Brunswick is situated in or near the cool temperate wet forest biome.
  • The mean annual temperature is 4.9 degrees Celsius (40.8 degrees Fahrenheit). See the temperatures page for a monthly breakdown and the fixed scale graph.
  • Average monthly temperatures vary by 25.1 °C (45.2°F). This indicates that the continentality type is continental, subtype subcontinental. Saint John, New Brunswick Climate Graph
  • In the winter time records indicate temperatures by day reach -1.8°C (28.8°F) on average falling to -12.3°C (9.9°F) overnight.
  • In spring time temperatures climb reaching 8.1°C (46.6°F) generally in the afternoon with overnight lows of -1.8°C (28.8°F).
  • During summer average high temperatures are 21°C (69.9°F) and average low temperatures are 10.5°C (50.9°F).
  • Come autumn/ fall temperatures decrease achieving average highs of 11.9°C (53.4°F) during the day and lows of 2.9°C (37.2°F) generally shortly after sunrise.
  • Total annual Precipitation averages 1432.7 mm (56.4 inches) which is equivalent to 1432.7 Litres/m (35.14 Gallons/ft).
  • On average there are 1891 hours of sunshine per year. Visit the sunshine and daylight section to check monthly details including how high in the sky the sun reaches each month.
  • Were you to burrow down through the centre of the Earth from Saint John, New Brunswick you would pop up nearest to the climate station at Albany, Western Australia, Australia where you would find a Mediterranean climate.

Saint John, New Brunswick Climate Table

  Climate Variable Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
 
Average Max Temperature °C ( °F) -3 (27) -2 (28) 2 (36) 8 (46) 14 (58) 19 (67) 22 (72) 22 (71) 18 (64) 12 (54) 6 (43) 0 (32) 10 (50)
 
Average Temperature °C ( °F) -8 (17) -8 (18) -3 (27) 3 (38) 9 (48) 14 (57) 17 (62) 17 (62) 13 (55) 8 (46) 2 (36) -5 (23) 5 (41)
 
Average Min Temperature °C ( °F) -14 (8) -13 (8) -8 (19) -2 (29) 4 (39) 8 (47) 12 (53) 12 (53) 8 (46) 3 (37) -2 (29) -10 (14) 0 (32)
 
Average Precipitation mm (in) 128 (5) 103 (4) 110 (4) 110 (4) 123 (5) 105 (4) 104 (4) 103 (4) 111 (4) 123 (5) 146 (6) 168 (7) 1433 (56)
Number of Wet Days (probability of rain on a day %) 15 (48) 13 (46) 14 (45) 14 (47) 14 (45) 14 (47) 13 (42) 13 (42) 13 (43) 13 (42) 15 (50) 15 (48) 166 (45)
Average Sunlight Hours/ Day 3h 25' 4h 21' 4h 54' 5h 18' 6h 30' 6h 40' 7h 13' 6h 58' 5h 32' 4h 48' 3h 08' 3h 13' 5h 10'
Average Daylight Hours/ Day 9h 09' 10h 19' 11h 51' 13h 28' 14h 52' 15h 35' 15h 16' 14h 03' 12h 29' 10h 51' 9h 28' 8h 47' 12h 00'
Percentage of Sunny (Cloudy) Daylight Hours 38 (62) 43 (57) 42 (58) 40 (60) 44 (56) 43 (57) 48 (52) 50 (50) 45 (55) 45 (55) 34 (66) 38 (62) 43 (57)
Sun altitude at solar noon on the 21st day (). 24.9 34.2 45.1 56.7 64.9 68.1 65 56.7 45.2 33.8 24.6 21.3 45

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