| Monthly barometric pressures for PORTLAND | back | table | PDF plot | Text file | Statistics |
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| Statistics | Top |
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| Mean barometric pressure = 1016.7 (Average monthly means =1016.7) | |
| Maximum recorded pressure of 1040.9 Hpa at 100 hours 05/07/2024 | |
| Minimum recorded pressure of 978.0 Hpa at 2200 hours 29/09/1996 | |
| Standard deviation of the observations = 8.0 Hpa | |
| Skewness = -0.6 |