Currently: 52 °F. Light rain. Fog. (Weather station: Portland International Airport, USA). See more current weatherMay 2018 Weather in Portland — Graph
°F
Time
Wind
(mph)
(mph)
Temp
(°F)
(°F)
41
46
51
56
61
66
71
76
81
86
91
Tue, May 1
Lo:52
12 am
Hi:52
6
Lo:52
6 am
Hi:54
7
Lo:54
12 pm
Hi:59
7
Lo:52
6 pm
Hi:59
5
Wed, May 2
Lo:43
12 am
Hi:52
4
Lo:48
6 am
Hi:61
4
Lo:63
12 pm
Hi:73
7
Lo:59
6 pm
Hi:73
4
Thu, May 3
Lo:52
12 am
Hi:55
2
Lo:50
6 am
Hi:68
6
Lo:70
12 pm
Hi:79
8
Lo:54
6 pm
Hi:64
4
Fri, May 4
Lo:54
12 am
Hi:55
5
Lo:54
6 am
Hi:59
6
Lo:63
12 pm
Hi:70
6
Lo:57
6 pm
Hi:66
6
Sat, May 5
Lo:54
12 am
Hi:55
2
Lo:54
6 am
Hi:64
6
Lo:66
12 pm
Hi:73
9
Lo:63
6 pm
Hi:72
6
Sun, May 6
Lo:55
12 am
Hi:63
5
Lo:55
6 am
Hi:72
6
Lo:72
12 pm
Hi:72
9
Lo:57
6 pm
Hi:70
6
Mon, May 7
Lo:55
12 am
Hi:57
4
Lo:55
6 am
Hi:66
3
Lo:68
12 pm
Hi:77
7
Lo:63
6 pm
Hi:75
6
Tue, May 8
Lo:54
12 am
Hi:61
3
Lo:55
6 am
Hi:70
4
Lo:72
12 pm
Hi:81
9
Lo:66
6 pm
Hi:73
4
Wed, May 9
Lo:55
12 am
Hi:61
6
Lo:55
6 am
Hi:64
10
Lo:64
12 pm
Hi:68
10
Lo:57
6 pm
Hi:66
9
Thu, May 10
Lo:54
12 am
Hi:55
2
Lo:52
6 am
Hi:61
5
Lo:59
12 pm
Hi:64
11
Lo:54
6 pm
Hi:59
12
Fri, May 11
Lo:48
12 am
Hi:52
6
Lo:50
6 am
Hi:59
6
Lo:61
12 pm
Hi:70
11
Lo:55
6 pm
Hi:66
9
Sat, May 12
Lo:52
12 am
Hi:55
3
Lo:54
6 am
Hi:61
4
Lo:66
12 pm
Hi:81
7
Lo:64
6 pm
Hi:77
8
Sun, May 13
Lo:54
12 am
Hi:61
1
Lo:55
6 am
Hi:73
1
Lo:79
12 pm
Hi:88
9
Lo:70
6 pm
Hi:88
6
Mon, May 14
Lo:57
12 am
Hi:70
1
Lo:59
6 am
Hi:73
3
Lo:75
12 pm
Hi:90
9
Lo:63
6 pm
Hi:88
7
Tue, May 15
Lo:55
12 am
Hi:61
3
Lo:57
6 am
Hi:63
3
Lo:64
12 pm
Hi:70
4
Lo:61
6 pm
Hi:70
5
Wed, May 16
Lo:55
12 am
Hi:59
4
Lo:55
6 am
Hi:61
4
Lo:61
12 pm
Hi:64
6
Lo:57
6 pm
Hi:64
5
Thu, May 17
Lo:55
12 am
Hi:57
4
Lo:55
6 am
Hi:61
2
Lo:61
12 pm
Hi:66
5
Lo:57
6 pm
Hi:63
7
Fri, May 18
Lo:55
12 am
Hi:55
5
Lo:55
6 am
Hi:63
4
Lo:64
12 pm
Hi:68
8
Lo:55
6 pm
Hi:68
7
Sat, May 19
Lo:55
12 am
Hi:55
1
Lo:55
6 am
Hi:63
1
Lo:64
12 pm
Hi:72
4
Lo:57
6 pm
Hi:70
4
Sun, May 20
Lo:55
12 am
Hi:57
2
Lo:57
6 am
Hi:63
5
Lo:64
12 pm
Hi:72
8
Lo:55
6 pm
Hi:70
9
Mon, May 21
Lo:52
12 am
Hi:54
4
Lo:52
6 am
Hi:61
4
Lo:63
12 pm
Hi:72
7
Lo:61
6 pm
Hi:72
8
Tue, May 22
Lo:54
12 am
Hi:59
2
Lo:55
6 am
Hi:72
4
Lo:75
12 pm
Hi:84
10
Lo:66
6 pm
Hi:82
8
Wed, May 23
Lo:57
12 am
Hi:63
2
Lo:61
6 am
Hi:72
4
Lo:73
12 pm
Hi:82
5
Lo:61
6 pm
Hi:79
6
Thu, May 24
Lo:59
12 am
Hi:61
3
Lo:59
6 am
Hi:66
2
Lo:68
12 pm
Hi:75
11
Lo:59
6 pm
Hi:75
8
Fri, May 25
Lo:54
12 am
Hi:57
7
Lo:54
6 am
Hi:64
7
Lo:66
12 pm
Hi:72
9
Lo:54
6 pm
Hi:68
14
Sat, May 26
Lo:50
12 am
Hi:54
6
Lo:55
6 am
Hi:59
5
Lo:63
12 pm
Hi:66
6
Lo:57
6 pm
Hi:64
5
Sun, May 27
Lo:54
12 am
Hi:55
7
Lo:55
6 am
Hi:66
2
Lo:70
12 pm
Hi:79
9
Lo:59
6 pm
Hi:77
8
Mon, May 28
Lo:54
12 am
Hi:57
7
Lo:55
6 am
Hi:66
9
Lo:68
12 pm
Hi:73
9
Lo:55
6 pm
Hi:70
10
Tue, May 29
Lo:50
12 am
Hi:54
11
Lo:52
6 am
Hi:59
7
Lo:59
12 pm
Hi:68
8
Lo:54
6 pm
Hi:64
14
Wed, May 30
Lo:46
12 am
Hi:52
2
Lo:50
6 am
Hi:57
4
Lo:61
12 pm
Hi:68
10
Lo:54
6 pm
Hi:66
11
Thu, May 31
Lo:52
12 am
Hi:54
5
Lo:54
6 am
Hi:59
2
Lo:57
12 pm
Hi:63
6
Lo:54
6 pm
Hi:59
6
Tuesday, May 1, 2018, 12:00 am — 6:00 am
52 / 52 °F
Mostly cloudy.
Humidity: 78%
Barometer: 30.11 "Hg
NW
Wind: 6.214 mph
High & Low Weather Summary for May 2018
| Temperature | Humidity | Pressure | |
|---|---|---|---|
| High | 89 °F (May 14, 5:53 pm) | 93% (May 2, 5:53 am) | 30.29 "Hg (May 2, 5:53 am) |
| Low | 43 °F (May 2, 5:53 am) | 21% (May 13, 4:53 pm) | 29.74 "Hg (May 22, 6:53 pm) |
| Average | 62 °F | 63% | 30.05 "Hg |
| * Reported May 1 12:53 am — May 31 11:53 pm, Portland. Weather by CustomWeather, © 2025 | |||
Note: Actual official high and low records may vary slightly from our data, if they occured in-between our weather recording intervals... More about our weather records
Portland Weather History for May 1, 2018
Scroll right to see more
| Conditions | Comfort | |||||||
|---|---|---|---|---|---|---|---|---|
| Time | Temp | Weather | Wind | Humidity | Barometer | Visibility | ||
| 12:53 am Tue, May 1 |  | 52 °F | Overcast. | 6 mph | ↑ | 75% | 30.14 "Hg | 10 mi |
| 1:53 am | | 52 °F | Mostly cloudy. | 7 mph | ↑ | 77% | 30.13 "Hg | 10 mi |
| 2:53 am |  | 51 °F | Partly cloudy. | 6 mph | ↑ | 80% | 30.11 "Hg | 10 mi |
| 3:53 am | | 51 °F | Overcast. | 7 mph | ↑ | 80% | 30.11 "Hg | 10 mi |
| 4:53 am | | 51 °F | Mostly cloudy. | 7 mph | ↑ | 77% | 30.10 "Hg | 10 mi |
| 5:26 am | | 51 °F | Mostly cloudy. | 7 mph | ↑ | 77% | 30.10 "Hg | 10 mi |
| 5:53 am | | 51 °F | Mostly cloudy. | 5 mph | ↑ | 77% | 30.10 "Hg | 10 mi |
| 6:53 am |  | 51 °F | Mostly cloudy. | 6 mph | ↑ | 77% | 30.11 "Hg | 10 mi |
| 7:53 am | | 52 °F | Mostly cloudy. | 5 mph | ↑ | 75% | 30.12 "Hg | 10 mi |
| 8:53 am |  | 53 °F | Overcast. | 7 mph | ↑ | 69% | 30.12 "Hg | 10 mi |
| 9:53 am | | 53 °F | Overcast. | 10 mph | ↑ | 66% | 30.12 "Hg | 10 mi |
| 10:53 am | | 53 °F | Overcast. | 9 mph | ↑ | 69% | 30.12 "Hg | 10 mi |
| 11:53 am | | 54 °F | Mostly cloudy. | 8 mph | ↑ | 64% | 30.12 "Hg | 10 mi |
| 12:14 pm | | 54 °F | More clouds than sun. | 8 mph | ↑ | 67% | 30.12 "Hg | 10 mi |
| 12:53 pm | | 55 °F | More clouds than sun. | 8 mph | ↑ | 64% | 30.11 "Hg | 10 mi |
| 1:53 pm | | 56 °F | Mostly cloudy. | 8 mph | ↑ | 60% | 30.11 "Hg | 10 mi |
| 2:53 pm | | 57 °F | Mostly cloudy. | 7 mph | ↑ | 60% | 30.10 "Hg | 10 mi |
| 3:53 pm | | 58 °F | Mostly cloudy. | 8 mph | ↑ | 58% | 30.09 "Hg | 10 mi |
| 4:53 pm | | 58 °F | Broken clouds. | 5 mph | ↑ | 56% | 30.07 "Hg | 10 mi |
| 5:53 pm | | 59 °F | Partly sunny. | 5 mph | ↑ | 56% | 30.07 "Hg | 10 mi |
| 6:53 pm | | 59 °F | Partly sunny. | 7 mph | ↑ | 56% | 30.07 "Hg | 10 mi |
| 7:53 pm | | 59 °F | Partly sunny. | 3 mph | ↑ | 58% | 30.08 "Hg | 10 mi |
| 8:53 pm |  | 58 °F | Passing clouds. | 3 mph | ↑ | 60% | 30.09 "Hg | 10 mi |
| 9:53 pm | | 56 °F | Passing clouds. | 3 mph | ↑ | 65% | 30.10 "Hg | 10 mi |
| 10:53 pm | | 54 °F | Passing clouds. | 7 mph | ↑ | 69% | 30.11 "Hg | 10 mi |
| 11:53 pm | | 52 °F | Partly cloudy. | 7 mph | ↑ | 77% | 30.11 "Hg | 10 mi |
| Weather by CustomWeather, © 2025 | ||||||||