Portland weather by month

Check out Portland weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.

Temperature in Portland (°F)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
45°F maximum daytime temperature in January in Portland45
50°F maximum daytime temperature in February in Portland50
54°F maximum daytime temperature in March in Portland54
59°F maximum daytime temperature in April in Portland59
66°F maximum daytime temperature in May in Portland66
72°F maximum daytime temperature in June in Portland72
79°F maximum daytime temperature in July in Portland79
79°F maximum daytime temperature in August in Portland79
73°F maximum daytime temperature in September in Portland73
63°F maximum daytime temperature in October in Portland63
52°F maximum daytime temperature in November in Portland52
45°F maximum daytime temperature in December in Portland45
Min temperature (night-time)
32°F minimum night-time temperature in January in Portland32
34°F minimum night-time temperature in February in Portland34
37°F minimum night-time temperature in March in Portland37
39°F minimum night-time temperature in April in Portland39
45°F minimum night-time temperature in May in Portland45
50°F minimum night-time temperature in June in Portland50
54°F minimum night-time temperature in July in Portland54
54°F minimum night-time temperature in August in Portland54
48°F minimum night-time temperature in September in Portland48
43°F minimum night-time temperature in October in Portland43
37°F minimum night-time temperature in November in Portland37
34°F minimum night-time temperature in December in Portland34
Heat & Humidity
No heat & humidity in January in Portland0
No heat & humidity in February in Portland0
No heat & humidity in March in Portland0
No heat & humidity in April in Portland0
No heat & humidity in May in Portland0
No heat & humidity in June in Portland0
Low heat & humidity in July in PortlandL
Low heat & humidity in August in PortlandL
No heat & humidity in September in Portland0
No heat & humidity in October in Portland0
No heat & humidity in November in Portland0
No heat & humidity in December in Portland0

Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme

Sunshine & Daylight in Portland

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daily hours of sunshine
Daily hours of daylight
9 hours of daylight per day in January in Portland9
10 hours of daylight per day in February in Portland10
12 hours of daylight per day in March in Portland12
14 hours of daylight per day in April in Portland14
15 hours of daylight per day in May in Portland15
16 hours of daylight per day in June in Portland16
15 hours of daylight per day in July in Portland15
14 hours of daylight per day in August in Portland14
12 hours of daylight per day in September in Portland12
11 hours of daylight per day in October in Portland11
9 hours of daylight per day in November in Portland9
9 hours of daylight per day in December in Portland9
UV Index (Maximum)
UV (maximum) index 1 (Low) in January in Portland1
UV (maximum) index 2 (Low) in February in Portland2
UV (maximum) index 3 (Moderate) in March in Portland3
UV (maximum) index 5 (Moderate) in April in Portland5
UV (maximum) index 6 (High) in May in Portland6
UV (maximum) index 7 (High) in June in Portland7
UV (maximum) index 8 (Very High) in July in Portland8
UV (maximum) index 7 (High) in August in Portland7
UV (maximum) index 5 (Moderate) in September in Portland5
UV (maximum) index 3 (Moderate) in October in Portland3
UV (maximum) index 2 (Low) in November in Portland2
UV (maximum) index 1 (Low) in December in Portland1

Rainfall in Portland

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
17 days with some rainfall in January in Portland17
15 days with some rainfall in February in Portland15
16 days with some rainfall in March in Portland16
14 days with some rainfall in April in Portland14
11 days with some rainfall in May in Portland11
8 days with some rainfall in June in Portland8
4 days with some rainfall in July in Portland4
5 days with some rainfall in August in Portland5
8 days with some rainfall in September in Portland8
11 days with some rainfall in October in Portland11
18 days with some rainfall in November in Portland18
18 days with some rainfall in December in Portland18
Average monthly rainfall (inches)
6.4 inches monthly rainfall in January in Portland6.4
4.6 inches monthly rainfall in February in Portland4.6
4.2 inches monthly rainfall in March in Portland4.2
2.8 inches monthly rainfall in April in Portland2.8
2.2 inches monthly rainfall in May in Portland2.2
1.7 inches monthly rainfall in June in Portland1.7
0.7 inches monthly rainfall in July in Portland0.7
1.1 inches monthly rainfall in August in Portland1.1
1.9 inches monthly rainfall in September in Portland1.9
3.3 inches monthly rainfall in October in Portland3.3
6.1 inches monthly rainfall in November in Portland6.1
7.0 inches monthly rainfall in December in Portland7.0

More about Portland

Portland by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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The climate guide for Oregon (Portland) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

What's the climate like in Portland?

Portland has a temperate climate with warm dry summers.

Metric (°C)  |  Imperial (°F)

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More about the USA

Compare Portland with the USA

Below the Portland chart shows average maximum daytime temperature for Portland, Oregon, USA and the USA (Washington).

Maximum daytime temperature (°F)

Portland, Oregon, USA
USA (Washington)
45
41
50
45
54
55
59
66
66
75
72
84
79
88
79
86
73
79
63
68
52
57
45
46
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Metric (°C)  |  Imperial (°F)

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