Portland, OregonSeptember 1999
North America Region, US
Complete daily temperature records for September 1999 with 30 days of comprehensive weather data.
Avg: 64.1°F
30 Days
30 Records
Monthly Average
64.1°F
September 1999
Highest Day
76.4°F
Lowest Day
52.5°F
Daily Range
23.9°F
Daily Temperature Progression
59°F
1
64°F
2
66°F
3
67°F
4
67°F
5
65°F
6
62°F
7
69°F
8
67°F
9
61°F
10
65°F
11
70°F
12
76°F
13
68°F
14
64°F
15
59°F
16
61°F
17
68°F
18
71°F
19
73°F
20
70°F
21
70°F
22
64°F
23
54°F
24
61°F
25
56°F
26
53°F
27
57°F
28
60°F
29
57°F
30
Weekday
Weekend
Daily Temperature Records
| Date | Day | Temperature | Deviation |
|---|---|---|---|
| 1999-09-01 | Wed | 59.0°F | -5.1°F |
| 1999-09-02 | Thu | 63.9°F | -0.2°F |
| 1999-09-03 | Fri | 66.0°F | +1.9°F |
| 1999-09-04 | Sat | 66.8°F | +2.7°F |
| 1999-09-05 | Sun | 66.5°F | +2.4°F |
| 1999-09-06 | Mon | 65.2°F | +1.1°F |
| 1999-09-07 | Tue | 62.3°F | -1.8°F |
| 1999-09-08 | Wed | 69.0°F | +4.9°F |
| 1999-09-09 | Thu | 66.9°F | +2.8°F |
| 1999-09-10 | Fri | 61.1°F | -3.0°F |
| 1999-09-11 | Sat | 65.3°F | +1.2°F |
| 1999-09-12 | Sun | 69.8°F | +5.7°F |
| 1999-09-13 | Mon | 76.4°F | +12.3°F |
| 1999-09-14 | Tue | 68.3°F | +4.2°F |
| 1999-09-15 | Wed | 64.2°F | +0.1°F |
| 1999-09-16 | Thu | 59.1°F | -5.0°F |
| 1999-09-17 | Fri | 60.9°F | -3.2°F |
| 1999-09-18 | Sat | 67.6°F | +3.5°F |
| 1999-09-19 | Sun | 70.9°F | +6.8°F |
| 1999-09-20 | Mon | 72.5°F | +8.4°F |
| 1999-09-21 | Tue | 70.0°F | +5.9°F |
| 1999-09-22 | Wed | 69.7°F | +5.6°F |
| 1999-09-23 | Thu | 64.4°F | +0.3°F |
| 1999-09-24 | Fri | 54.3°F | -9.8°F |
| 1999-09-25 | Sat | 61.1°F | -3.0°F |
| 1999-09-26 | Sun | 55.5°F | -8.6°F |
| 1999-09-27 | Mon | 52.5°F | -11.6°F |
| 1999-09-28 | Tue | 57.0°F | -7.1°F |
| 1999-09-29 | Wed | 60.0°F | -4.1°F |
| 1999-09-30 | Thu | 57.1°F | -7.0°F |