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St. John, New Brunswick Climate Averages

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St. John Monthly Climate Averages

January
February
March
April
May
June
July
August
September
October
November
December
Hi 28°F Lo 16°F Hi 29°F Lo 17°F Hi 35°F Lo 24°F Hi 45°F Lo 34°F Hi 55°F Lo 42°F Hi 63°F Lo 50°F Hi 70°F Lo 56°F Hi 71°F Lo 57°F Hi 65°F Lo 52°F Hi 55°F Lo 44°F Hi 44°F Lo 34°F Hi 34°F Lo 25°F
12 mph 12 mph 12 mph 10 mph 9 mph 8 mph 8 mph 7 mph 9 mph 10 mph 11 mph 12 mph
7.2 in 6.7 in 5.7 in 5.8 in 5.7 in 5.3 in 3.3 in 3.2 in 4.4 in 5.8 in 7.2 in 9 in
85% 86% 83% 81% 81% 82% 83% 82% 81% 80% 80% 82%
61% 64% 59% 58% 52% 47% 42% 37% 39% 45% 51% 59%
29.9 in 29.9 in 30.0 in 29.9 in 30.0 in 29.9 in 29.9 in 30.0 in 30.0 in 30.0 in 30.0 in 30.0 in
4 3 7 12 21 23 26 27 25 22 14 6
8 7 9 11 9 7 5 4 5 8 9 10
20 19 17 7 1 0 0 0 0 1 7 15
1 1 1 2 3 5 7 6 3 1 0 0
1 1 2 2 4 4 5 5 4 2 2 1
202 163 205 217 250 261 293 315 283 265 226 199
January
February
March
April
May
June
July
August
September
October
November
December
Hi -2°C Lo -9°C Hi -2°C Lo -8°C Hi 2°C Lo -5°C Hi 7°C Lo 1°C Hi 13°C Lo 6°C Hi 17°C Lo 10°C Hi 21°C Lo 14°C Hi 22°C Lo 14°C Hi 18°C Lo 11°C Hi 13°C Lo 6°C Hi 7°C Lo 1°C Hi 1°C Lo -4°C
19 km/h 19 km/h 19 km/h 17 km/h 14 km/h 13 km/h 12 km/h 12 km/h 14 km/h 17 km/h 18 km/h 19 km/h
183 mm 170 mm 144 mm 147 mm 145 mm 135 mm 83 mm 81 mm 111 mm 147 mm 183 mm 230 mm
85% 86% 83% 81% 81% 82% 83% 82% 81% 80% 80% 82%
61% 64% 59% 58% 52% 47% 42% 37% 39% 45% 51% 59%
1013 mb 1014 mb 1015 mb 1014 mb 1016 mb 1013 mb 1013 mb 1014 mb 1017 mb 1016 mb 1016 mb 1015 mb
4 3 7 12 21 23 26 27 25 22 14 6
8 7 9 11 9 7 5 4 5 8 9 10
20 19 17 7 1 0 0 0 0 1 7 15
1 1 1 2 3 5 7 6 3 1 0 0
1 1 2 2 4 4 5 5 4 2 2 1
202 163 205 217 250 261 293 315 283 265 226 199
Month
Avg. Temperatures
Avg. Wind Speed
Avg. Precipitation
Average Humidity
Avg. Cloud Cover
Pressure Average
Average Dry Days
Avg. Precip. Days
Avg. Snow Days
Average Fog Days
Average UV Index
Avg. Hours of Sun
Averages are based on historical weather data from the past 10 years.

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