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| Point Forecast: Port Isabel-Cameron County Airport TX 26.17N 97.34W |
Last Update: 3:15 am CDT May 9, 2021 |
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| Date | 05/09 | 05/10 | ||||||||||||||||||||||
| Hour (CDT) | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 |
| Temperature (°F) | 76 | 76 | 76 | 76 | 76 | 77 | 79 | 82 | 84 | 86 | 87 | 88 | 89 | 89 | 90 | 89 | 88 | 86 | 83 | 82 | 81 | 80 | 79 | 78 |
| Dewpoint (°F) | 73 | 73 | 73 | 73 | 73 | 73 | 73 | 73 | 73 | 73 | 72 | 72 | 73 | 73 | 74 | 74 | 74 | 75 | 75 | 75 | 75 | 75 | 75 | 75 |
| Heat Index (°F) | 76 | 76 | 76 | 76 | 76 | 77 | 83 | 87 | 90 | 92 | 94 | 95 | 97 | 97 | 98 | 98 | 97 | 94 | 91 | 88 | 86 | 84 | 79 | 78 |
| Surface Wind (mph) | 20 | 18 | 17 | 18 | 17 | 21 | 24 | 28 | 29 | 28 | 26 | 26 | 25 | 25 | 23 | 22 | 20 | 20 | 18 | 18 | 18 | 17 | 17 | 16 |
| Wind Dir | SSE | SSE | SSE | SSE | SSE | SSE | SSE | SSE | SSE | S | S | S | S | SSE | SSE | SSE | SSE | SSE | SSE | SSE | SSE | SSE | SSE | SSE |
| Gust | 26 | 25 | 24 | 25 | 23 | 28 | 33 | 37 | 38 | 37 | 36 | 34 | 34 | 33 | 31 | 29 | 28 | 25 | 24 | 23 | 23 | 23 | 23 | 23 |
| Sky Cover (%) | 55 | 60 | 61 | 41 | 50 | 30 | 71 | 46 | 47 | 49 | 35 | 17 | 13 | 10 | 12 | 27 | 21 | 19 | 38 | 52 | 46 | 49 | 60 | 70 |
| Precipitation Potential (%) | 1 | 1 | 1 | 1 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 |
| Relative Humidity (%) | 91 | 91 | 91 | 92 | 92 | 87 | 81 | 75 | 70 | 66 | 63 | 60 | 59 | 59 | 59 | 60 | 64 | 69 | 76 | 80 | 83 | 86 | 88 | 89 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 05/11 | |||||||||||||||||||||||
| Hour (CDT) | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 |
| Temperature (°F) | 78 | 77 | 76 | 76 | 76 | 77 | 79 | 81 | 82 | 84 | 85 | 86 | 86 | 87 | 87 | 86 | 82 | 80 | 80 | 79 | 79 | 79 | 79 | 79 |
| Dewpoint (°F) | 74 | 74 | 74 | 74 | 74 | 74 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 74 | 76 | 76 | 76 | 76 | 76 | 76 | 76 | 76 |
| Heat Index (°F) | 78 | 77 | 77 | 76 | 76 | 77 | 83 | 87 | 89 | 92 | 93 | 95 | 96 | 96 | 96 | 95 | 89 | 86 | 84 | 84 | 83 | 83 | 79 | 79 |
| Surface Wind (mph) | 16 | 15 | 15 | 14 | 15 | 17 | 18 | 21 | 22 | 22 | 22 | 22 | 22 | 22 | 21 | 20 | 15 | 14 | 13 | 11 | 11 | 11 | 11 | 11 |
| Wind Dir | SSE | SSE | SSE | SSE | SSE | SSE | SSE | SSE | SSE | SSE | SSE | SSE | SE | SE | SE | SE | SE | SE | SE | SE | SE | SSE | SSE | SSE |
| Gust | 22 | 21 | 21 | 20 | 21 | 23 | 25 | 28 | 29 | 29 | 29 | 29 | 30 | 30 | 29 | 26 | 21 | |||||||
| Sky Cover (%) | 76 | 79 | 78 | 76 | 83 | 84 | 85 | 85 | 80 | 74 | 68 | 65 | 64 | 62 | 64 | 66 | 74 | 79 | 85 | 90 | 88 | 87 | 85 | 87 |
| Precipitation Potential (%) | 7 | 7 | 7 | 7 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
| Relative Humidity (%) | 89 | 91 | 92 | 93 | 94 | 91 | 86 | 82 | 78 | 75 | 73 | 71 | 70 | 69 | 68 | 67 | 83 | 86 | 88 | 88 | 89 | 90 | 90 | 90 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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