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| Point Forecast: Port Isabel-Cameron County Airport TX 26.17N 97.34W |
Last Update: 2:45 pm CDT Sep 18, 2021 |
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| Date | 09/18 | 09/19 | ||||||||||||||||||||||
| Hour (CDT) | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 |
| Temperature (°F) | 90 | 90 | 88 | 87 | 85 | 84 | 83 | 81 | 81 | 80 | 80 | 79 | 78 | 77 | 77 | 76 | 76 | 78 | 83 | 86 | 88 | 89 | 90 | 90 |
| Dewpoint (°F) | 76 | 76 | 76 | 76 | 76 | 76 | 75 | 75 | 76 | 75 | 75 | 75 | 75 | 75 | 74 | 75 | 74 | 76 | 77 | 76 | 74 | 73 | 74 | 74 |
| Heat Index (°F) | 103 | 101 | 99 | 97 | 95 | 92 | 90 | 88 | 88 | 85 | 84 | 79 | 78 | 77 | 77 | 76 | 76 | 78 | 91 | 95 | 98 | 97 | 99 | 100 |
| Surface Wind (mph) | 11 | 13 | 11 | 11 | 10 | 7 | 6 | 6 | 5 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 5 | 6 | 6 | 9 | 10 |
| Wind Dir | ENE | ENE | ENE | E | E | E | ESE | SE | SE | SSE | S | S | SSW | SSW | SW | SW | WSW | WSW | SW | SW | S | ESE | E | E |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 27 | 27 | 27 | 27 | 7 | 13 | 15 | 14 | 15 | 16 | 16 | 12 | 8 | 11 | 13 | 18 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
| Precipitation Potential (%) | 7 | 7 | 7 | 7 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
| Relative Humidity (%) | 63 | 64 | 66 | 70 | 73 | 77 | 79 | 82 | 83 | 85 | 86 | 87 | 92 | 94 | 92 | 96 | 95 | 93 | 82 | 72 | 64 | 60 | 60 | 60 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 09/20 | |||||||||||||||||||||||
| Hour (CDT) | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 |
| Temperature (°F) | 90 | 90 | 89 | 87 | 85 | 83 | 83 | 82 | 81 | 80 | 80 | 80 | 79 | 78 | 77 | 76 | 77 | 80 | 84 | 87 | 89 | 91 | 91 | 92 |
| Dewpoint (°F) | 74 | 75 | 75 | 74 | 75 | 75 | 75 | 75 | 76 | 76 | 76 | 76 | 75 | 75 | 75 | 75 | 75 | 75 | 76 | 76 | 77 | 76 | 76 | 76 |
| Heat Index (°F) | 100 | 100 | 98 | 96 | 93 | 90 | 90 | 88 | 87 | 86 | 86 | 84 | 79 | 78 | 77 | 76 | 77 | 84 | 92 | 98 | 102 | 103 | 104 | 104 |
| Surface Wind (mph) | 11 | 13 | 13 | 13 | 11 | 10 | 8 | 8 | 8 | 8 | 7 | 7 | 6 | 6 | 6 | 6 | 7 | 8 | 10 | 11 | 13 | 15 | 16 | 17 |
| Wind Dir | E | E | ESE | ESE | SE | SE | SSE | SSE | S | S | S | S | S | S | S | S | S | S | S | S | S | SSE | SSE | SSE |
| Gust | 21 | 23 | 24 | |||||||||||||||||||||
| Sky Cover (%) | 25 | 25 | 25 | 25 | 11 | 21 | 18 | 12 | 13 | 12 | 25 | 25 | 25 | 25 | 25 | 25 | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 27 |
| Precipitation Potential (%) | 5 | 5 | 5 | 5 | 2 | 2 | 2 | 2 | 2 | 2 | 5 | 5 | 5 | 5 | 5 | 5 | 8 | 8 | 8 | 8 | 8 | 8 | 7 | 7 |
| Relative Humidity (%) | 60 | 61 | 64 | 66 | 71 | 76 | 78 | 80 | 84 | 86 | 87 | 88 | 88 | 91 | 94 | 98 | 94 | 87 | 78 | 71 | 66 | 63 | 61 | 59 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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