Portland, MaineSeptember 1999
North America Region, US
Complete daily temperature records for September 1999 with 30 days of comprehensive weather data.
Avg: 63.6°F
30 Days
30 Records
Monthly Average
63.6°F
September 1999
Highest Day
72.9°F
Lowest Day
52.6°F
Daily Range
20.3°F
Daily Temperature Progression
66°F
1
69°F
2
73°F
3
68°F
4
68°F
5
67°F
6
71°F
7
73°F
8
72°F
9
70°F
10
70°F
11
64°F
12
63°F
13
63°F
14
66°F
15
62°F
16
60°F
17
61°F
18
54°F
19
56°F
20
61°F
21
62°F
22
61°F
23
62°F
24
63°F
25
54°F
26
53°F
27
55°F
28
60°F
29
62°F
30
Weekday
Weekend
Daily Temperature Records
| Date | Day | Temperature | Deviation |
|---|---|---|---|
| 1999-09-01 | Wed | 65.5°F | +1.9°F |
| 1999-09-02 | Thu | 69.0°F | +5.4°F |
| 1999-09-03 | Fri | 72.9°F | +9.3°F |
| 1999-09-04 | Sat | 68.1°F | +4.5°F |
| 1999-09-05 | Sun | 68.2°F | +4.6°F |
| 1999-09-06 | Mon | 66.8°F | +3.2°F |
| 1999-09-07 | Tue | 71.1°F | +7.5°F |
| 1999-09-08 | Wed | 72.6°F | +9.0°F |
| 1999-09-09 | Thu | 71.8°F | +8.2°F |
| 1999-09-10 | Fri | 69.9°F | +6.3°F |
| 1999-09-11 | Sat | 70.1°F | +6.5°F |
| 1999-09-12 | Sun | 64.0°F | +0.4°F |
| 1999-09-13 | Mon | 63.4°F | -0.2°F |
| 1999-09-14 | Tue | 63.0°F | -0.6°F |
| 1999-09-15 | Wed | 66.0°F | +2.4°F |
| 1999-09-16 | Thu | 61.5°F | -2.1°F |
| 1999-09-17 | Fri | 60.4°F | -3.2°F |
| 1999-09-18 | Sat | 60.9°F | -2.7°F |
| 1999-09-19 | Sun | 54.1°F | -9.5°F |
| 1999-09-20 | Mon | 56.0°F | -7.6°F |
| 1999-09-21 | Tue | 60.8°F | -2.8°F |
| 1999-09-22 | Wed | 61.7°F | -1.9°F |
| 1999-09-23 | Thu | 60.5°F | -3.1°F |
| 1999-09-24 | Fri | 62.3°F | -1.3°F |
| 1999-09-25 | Sat | 63.2°F | -0.4°F |
| 1999-09-26 | Sun | 53.7°F | -9.9°F |
| 1999-09-27 | Mon | 52.6°F | -11.0°F |
| 1999-09-28 | Tue | 54.9°F | -8.7°F |
| 1999-09-29 | Wed | 60.2°F | -3.4°F |
| 1999-09-30 | Thu | 62.2°F | -1.4°F |