| Point Forecast: Guanica PR 17.97N 66.92W (Elev. 16 ft) |
Last Update: 4:30 pm AST Sep 16, 2026 |
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| Date | 09/17 | |||||||||||||||||||||||
| Hour (AST) | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
| Temperature (°F) | 76 | 75 | 75 | 74 | 74 | 74 | 77 | 80 | 82 | 84 | 86 | 87 | 88 | 88 | 88 | 87 | 86 | 83 | 82 | 81 | 80 | 79 | 79 | 78 |
| Dewpoint (°F) | 74 | 74 | 74 | 74 | 73 | 73 | 74 | 75 | 76 | 76 | 76 | 77 | 76 | 76 | 76 | 75 | 75 | 75 | 75 | 75 | 76 | 76 | 75 | 75 |
| Heat Index (°F) | 76 | 75 | 75 | 77 | 84 | 89 | 93 | 96 | 98 | 99 | 99 | 98 | 97 | 95 | 90 | 88 | 87 | 85 | 83 | 79 | 78 | |||
| Surface Wind (mph) | 10 | 10 | 10 | 10 | 11 | 11 | 13 | 14 | 15 | 16 | 17 | 18 | 18 | 18 | 17 | 17 | 16 | 15 | 14 | 14 | 13 | 13 | 11 | 11 |
| Wind Dir | E | E | E | E | E | E | E | E | E | E | ESE | ESE | ESE | ESE | ESE | ESE | E | E | E | E | E | E | E | E |
| Gust | 21 | 23 | 25 | 28 | 30 | 30 | 31 | 30 | 30 | 29 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | |||||||
| Sky Cover (%) | 50 | 50 | 50 | 50 | 50 | 50 | 80 | 80 | 80 | 70 | 70 | 70 | 60 | 60 | 60 | 50 | 50 | 50 | 50 | 50 | 50 | 40 | 40 | 40 |
| Precipitation Potential (%) | 30 | 30 | 30 | 30 | 30 | 30 | 60 | 60 | 60 | 50 | 50 | 50 | 40 | 40 | 40 | 30 | 30 | 30 | 30 | 30 | 30 | 20 | 20 | 20 |
| Relative Humidity (%) | 95 | 95 | 97 | 97 | 98 | 96 | 91 | 85 | 80 | 77 | 74 | 71 | 69 | 67 | 67 | 67 | 70 | 76 | 80 | 84 | 86 | 89 | 90 | 91 |
| Rain | Chc | Chc | Chc | Chc | Chc | Chc | Lkly | Lkly | Lkly | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | SChc | SChc | SChc |
| Thunder | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 09/18 | |||||||||||||||||||||||
| Hour (AST) | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
| Temperature (°F) | 78 | 77 | 77 | 76 | 76 | 76 | 79 | 82 | 85 | 87 | 89 | 90 | 91 | 92 | 92 | 91 | 89 | 85 | 83 | 81 | 80 | 79 | 79 | 78 |
| Dewpoint (°F) | 75 | 75 | 74 | 74 | 74 | 74 | 74 | 75 | 76 | 77 | 78 | 78 | 78 | 77 | 77 | 77 | 77 | 77 | 77 | 77 | 77 | 77 | 76 | 76 |
| Heat Index (°F) | 78 | 77 | 77 | 76 | 76 | 76 | 83 | 89 | 95 | 99 | 103 | 105 | 107 | 106 | 105 | 104 | 101 | 95 | 91 | 89 | 87 | 84 | 79 | 78 |
| Surface Wind (mph) | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 10 | 10 | 13 | 14 | 16 | 16 | 16 | 15 | 15 | 14 | 13 | 13 | 11 | 11 | 11 | 10 | 10 |
| Wind Dir | E | E | E | E | E | E | E | E | E | E | ESE | ESE | ESE | ESE | ESE | ESE | ESE | E | E | E | E | E | E | E |
| Gust | 21 | 24 | 26 | 26 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | |||||||||||||
| Sky Cover (%) | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 40 | 40 | 40 | 40 | 40 | 40 | 30 | 30 | 30 | 30 | 30 | 30 |
| Precipitation Potential (%) | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 20 | 20 | 20 | 20 | 20 | 20 | 10 | 10 | 10 | 10 | 10 | 10 |
| Relative Humidity (%) | 92 | 92 | 92 | 93 | 94 | 93 | 85 | 79 | 74 | 71 | 69 | 67 | 65 | 63 | 63 | 64 | 69 | 78 | 83 | 87 | 90 | 92 | 93 | 94 |
| Rain | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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