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Portland, Oregon Climate Averages

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Portland Monthly Climate Averages

January
February
March
April
May
June
July
August
September
October
November
December
Hi 47°F Lo 36°F Hi 48°F Lo 36°F Hi 53°F Lo 39°F Hi 59°F Lo 41°F Hi 67°F Lo 45°F Hi 74°F Lo 50°F Hi 83°F Lo 55°F Hi 84°F Lo 57°F Hi 76°F Lo 54°F Hi 64°F Lo 48°F Hi 52°F Lo 41°F Hi 45°F Lo 36°F
6 mph 6 mph 5 mph 5 mph 4 mph 4 mph 4 mph 4 mph 4 mph 5 mph 5 mph 5 mph
9.3 in 6.9 in 7.7 in 5.7 in 3.9 in 3 in 0.6 in 0.7 in 3.3 in 6.6 in 8 in 8.7 in
82% 82% 80% 76% 72% 69% 63% 62% 66% 72% 81% 82%
56% 57% 55% 52% 45% 39% 23% 21% 29% 40% 54% 56%
30.1 in 30.1 in 30.0 in 30.1 in 30.0 in 30.0 in 30.0 in 30.0 in 30.0 in 30.0 in 30.1 in 30.1 in
17 14 17 21 24 26 30 30 26 23 18 17
13 11 12 9 7 4 1 1 4 8 12 12
2 3 2 1 0 0 0 0 0 0 0 2
4 3 3 5 6 7 7 6 3 3 3 3
2 2 3 4 5 6 7 5 4 3 2 2
121 99 110 122 170 194 285 293 233 189 124 121
January
February
March
April
May
June
July
August
September
October
November
December
Hi 8°C Lo 2°C Hi 9°C Lo 2°C Hi 12°C Lo 4°C Hi 15°C Lo 5°C Hi 20°C Lo 7°C Hi 23°C Lo 10°C Hi 28°C Lo 13°C Hi 29°C Lo 14°C Hi 25°C Lo 12°C Hi 18°C Lo 9°C Hi 11°C Lo 5°C Hi 7°C Lo 2°C
9 km/h 9 km/h 8 km/h 8 km/h 7 km/h 7 km/h 7 km/h 6 km/h 6 km/h 7 km/h 9 km/h 9 km/h
235 mm 176 mm 196 mm 143 mm 98 mm 75 mm 15 mm 18 mm 83 mm 167 mm 203 mm 221 mm
82% 82% 80% 76% 72% 69% 63% 62% 66% 72% 81% 82%
56% 57% 55% 52% 45% 39% 23% 21% 29% 40% 54% 56%
1020 mb 1019 mb 1017 mb 1018 mb 1017 mb 1017 mb 1017 mb 1016 mb 1016 mb 1018 mb 1018 mb 1019 mb
17 14 17 21 24 26 30 30 26 23 18 17
13 11 12 9 7 4 1 1 4 8 12 12
2 3 2 1 0 0 0 0 0 0 0 2
4 3 3 5 6 7 7 6 3 3 3 3
2 2 3 4 5 6 7 5 4 3 2 2
121 99 110 122 170 194 285 293 233 189 124 121
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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