Weather History for Portland, OR

Change the Weather History Date:

Month of April, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 82 °F 61 °F 48 °F
Mean Temperature 69 °F 54 °F 44 °F
Min Temperature 56 °F 46 °F 31 °F
Degree Days  
Heating Degree Days (base 65) 21 12 0 345
Cooling Degree Days (base 65) 4 0 0 5
Growing Degree Days (base 50) 18 4 0 123
Dew Point  
Dew Point 55 °F 42 °F 27 °F
Precipitation  
Precipitation 0.49 in 0.10 in 0.00 in 2.60 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 29 mph 7 mph 0 mph
Gust Wind 37 mph 21 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.33 in 30.01 in 29.64 in

Monthly Weather History Graph

Monthly Weather History Graph

Search for Another Location

Airport:

Trip Planner

Search our weather history database for the weather conditions in past years. The results will help you decide how hot, cold, wet, or windy it might be!

Date:

Astronomy

Apr. 09, 2012 Rise Set
Actual Time 6:34 AM PDT 7:49 PM PDT
Civil Twilight 6:04 AM PDT 8:20 PM PDT
Nautical Twilight 5:27 AM PDT 8:57 PM PDT
Astronomical Twilight 4:48 AM PDT 9:36 PM PDT
Moon No Moon Rise 8:15 AM PDT (4/9)
Length of Visible Light 14h 16m
Length of Day
13h 15m
Waning Gibbous, 87% of the Moon is Illuminated
Apr 9
Waning Gibbous
Apr 13
Last Quarter
Apr 21
New
Apr 29
First Quarter
May 5
Full

Weather History Calendar

Precipitation Actual month total 2.60 Normal Month Total: 2.73
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
Rain
Actual:
51 | 41 0.05
Average:
59 | 42 0.10
Partly Cloudy
Actual:
61 | 41 0.00
Average:
59 | 42 0.10
Rain
Actual:
52 | 44 0.24
Average:
59 | 42 0.11
Rain
Actual:
50 | 39 0.15
Average:
59 | 42 0.10
Rain
Actual:
48 | 39 0.26
Average:
60 | 42 0.10
Rain
Actual:
52 | 38 0.00
Average:
60 | 42 0.10
Fog
Actual:
63 | 31 0.00
Average:
60 | 42 0.09
Partly Cloudy
Actual:
68 | 50 0.00
Average:
60 | 42 0.10
Partly Cloudy
Actual:
67 | 44 0.00
Average:
60 | 42 0.09
Rain
Actual:
65 | 48 0.01
Average:
60 | 42 0.10
Rain
Actual:
55 | 50 0.38
Average:
60 | 43 0.09
Rain
Actual:
59 | 42 T
Average:
61 | 43 0.09
Rain
Actual:
63 | 39 0.00
Average:
61 | 43 0.10
Partly Cloudy
Actual:
63 | 41 0.00
Average:
61 | 43 0.09
Rain
Actual:
66 | 43 0.00
Average:
61 | 43 0.09
Rain
Actual:
61 | 51 0.41
Average:
61 | 43 0.09
Rain
Actual:
51 | 40 0.02
Average:
62 | 43 0.09
Rain
Actual:
59 | 47 0.05
Average:
62 | 43 0.09
Rain
Actual:
54 | 43 0.49
Average:
62 | 43 0.10
Rain
Actual:
58 | 50 0.03
Average:
62 | 44 0.09
Fog
Actual:
75 | 46 0.00
Average:
62 | 44 0.09
Fog
Actual:
82 | 49 0.00
Average:
63 | 44 0.09
Partly Cloudy
Actual:
82 | 55 T
Average:
63 | 44 0.08
Rain
Actual:
64 | 56 0.10
Average:
63 | 44 0.09
Rain
Actual:
67 | 56 0.03
Average:
63 | 44 0.08
Rain
Actual:
59 | 49 0.26
Average:
63 | 44 0.08
Rain
Actual:
57 | 42 0.01
Average:
64 | 45 0.08
Rain
Actual:
64 | 49 T
Average:
64 | 45 0.08
Rain
Actual:
65 | 53 0.00
Average:
64 | 45 0.07
Rain
Actual:
59 | 49 0.11
Average:
64 | 45 0.08
 

Calendar Legend

Sunny
Clear
Mostly Cloudy
Partly Sunny
Partly Cloudy
Mostly Sunny
Cloudy Rain Snow
Hail
Flurries
Thunderstorms Hazy
Fog
Sleet '?' denotes
'chance of'
Unknown

Daily Weather History & Observations

2012 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
Apr high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 51 46 41 40 37 35 83 70 56 30.27 30.05 29.69 10 10 7 29 14 35 0.05 Rain
2 61 51 41 40 38 35 89 66 42 30.30 30.15 29.94 10 10 10 21 10 24 0.00  
3 52 48 44 44 39 34 86 68 50 30.01 29.94 29.82 10 9 6 21 11 25 0.24 Rain
4 50 45 39 40 38 34 93 75 56 30.15 30.05 29.98 10 9 4 20 6 25 0.15 Rain
5 48 44 39 39 37 34 92 76 60 30.21 30.18 30.15 10 9 4 21 5 25 0.26 Rain
6 52 45 38 38 34 27 92 67 41 30.32 30.28 30.19 15 10 10 18 5 23 0.00 Rain
7 63 47 31 36 33 30 92 63 34 30.28 30.17 30.08 10 8 0 21 7 26 0.00 Fog
8 68 59 50 37 32 29 48 38 27 30.06 30.02 29.96 10 10 10 23 14 28 0.00  
9 67 56 44 44 39 34 76 54 31 30.00 29.92 29.80 10 10 10 10 4 14 0.00  
10 65 57 48 49 45 41 86 65 43 29.83 29.78 29.70 10 10 10 20 6 25 0.01 Rain
11 55 53 50 50 47 43 89 86 83 29.80 29.73 29.70 10 9 4 17 4 20 0.38 Rain
12 59 51 42 44 40 34 100 70 40 29.80 29.76 29.69 10 10 2 21 9 28 T Rain
13 63 51 39 42 39 36 93 65 36 29.91 29.81 29.77 10 9 1 22 4 28 0.00 Rain
14 63 52 41 42 40 38 93 68 43 30.21 30.09 29.93 10 10 9 12 3 15 0.00  
15 66 55 43 46 38 29 83 55 26 30.24 30.16 30.06 10 10 10 12 2 14 0.00 Rain
16 61 56 51 52 45 37 96 72 47 30.25 30.08 29.97 10 8 3 17 11 22 0.41 Rain
17 51 46 40 45 41 37 100 86 71 30.25 30.14 30.02 10 9 2 14 3 17 0.02 Rain
18 59 53 47 46 43 35 86 65 43 30.09 30.05 30.00 10 9 4 15 7 18 0.05 Rain
19 54 49 43 53 47 40 93 85 77 30.12 30.09 30.06 10 8 3 15 6 17 0.49 Rain
20 58 54 50 52 48 45 89 78 66 30.25 30.19 30.14 10 9 2 14 8 17 0.03 Rain
21 75 61 46 49 47 44 100 67 33 30.18 30.09 29.94 10 6 0 8 3 10 0.00 Fog
22 82 66 49 53 50 46 89 60 31 29.97 29.90 29.81 10 10 10 7 2 17 0.00 Fog
23 82 69 55 54 52 50 83 60 36 29.89 29.83 29.74 10 10 10 14 5 17 T  
24 64 60 56 55 50 48 84 72 60 29.99 29.92 29.86 10 10 10 17 8 21 0.10 Rain
25 67 62 56 55 51 48 80 68 56 29.88 29.75 29.65 10 10 10 16 10 23 0.03 Rain
26 59 54 49 49 43 36 89 72 55 30.13 29.80 29.64 10 9 5 29 8 37 0.26 Rain
27 57 50 42 45 42 39 89 70 51 30.33 30.29 30.17 10 10 10 17 7 20 0.01 Rain
28 64 57 49 49 46 44 93 71 48 30.31 30.26 30.19 10 9 2 10 4 13 T Rain
29 65 59 53 50 47 44 83 66 48 30.19 30.08 29.86 10 10 10 12 3 13 0.00 Rain
30 59 54 49 49 44 37 89 70 51 30.05 29.88 29.79 10 9 2 24 14 31 0.11 Rain