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| Point Forecast: 3 Miles SSW South Haven MI 42.36N 86.28W (Elev. 184 m) |
Last Update: 4:04 pm EDT Sep 18, 2021 |
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| Date | 09/18 | 09/19 | ||||||||||||||||||||||
| Hour (EDT) | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 |
| Temperature (°C) | 24 | 24 | 23 | 23 | 22 | 21 | 19 | 18 | 18 | 18 | 18 | 17 | 17 | 16 | 16 | 16 | 16 | 18 | 21 | 24 | 26 | 27 | 28 | 29 |
| Dewpoint (°C) | 13 | 13 | 14 | 14 | 16 | 15 | 14 | 14 | 13 | 13 | 12 | 12 | 13 | 12 | 12 | 12 | 13 | 14 | 15 | 17 | 17 | 18 | 19 | 18 |
| Heat Index (°C) | 24 | 24 | 24 | 26 | 28 | 29 | 30 | |||||||||||||||||
| Surface Wind (mph) | 7 | 7 | 7 | 6 | 6 | 5 | 6 | 6 | 6 | 8 | 8 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 6 | 6 | 5 | 5 |
| Wind Dir | N | N | N | N | NNE | NNE | ENE | E | E | E | ESE | ESE | ESE | ESE | ESE | ESE | SE | SE | SE | SE | SSE | SSE | S | S |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 10 | 5 | 4 | 3 | 4 | 3 | 4 | 4 | 4 | 4 | 5 | 6 | 6 | 7 | 7 | 8 | 8 | 8 | 8 | 8 | 9 | 9 | 10 | 13 |
| Precipitation Potential (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
| Relative Humidity (%) | 50 | 52 | 55 | 60 | 66 | 70 | 75 | 75 | 75 | 73 | 70 | 72 | 78 | 78 | 81 | 78 | 81 | 75 | 68 | 64 | 58 | 56 | 57 | 53 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 09/20 | |||||||||||||||||||||||
| Hour (EDT) | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 |
| Temperature (°C) | 29 | 29 | 28 | 27 | 25 | 23 | 22 | 21 | 20 | 20 | 19 | 19 | 19 | 19 | 18 | 18 | 19 | 21 | 22 | 23 | 24 | 24 | 25 | 25 |
| Dewpoint (°C) | 19 | 19 | 19 | 19 | 19 | 18 | 18 | 17 | 17 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 17 | 18 | 19 | 20 | 21 | 21 | 21 | 21 |
| Heat Index (°C) | 30 | 30 | 29 | 28 | 25 | 24 | 24 | 25 | 25 | |||||||||||||||
| Surface Wind (mph) | 3 | 2 | 3 | 3 | 3 | 5 | 6 | 6 | 7 | 8 | 9 | 9 | 9 | 9 | 8 | 8 | 8 | 9 | 10 | 11 | 13 | 13 | 13 | 13 |
| Wind Dir | S | S | SSE | ESE | ESE | ESE | ESE | SE | SE | SE | SE | SE | SE | SE | SE | SSE | SSE | SSE | SSE | SSE | SSE | SSE | SSE | SSE |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 15 | 17 | 21 | 24 | 29 | 34 | 35 | 35 | 41 | 49 | 54 | 58 | 62 | 65 | 68 | 70 | 74 | 73 | 70 | 68 | 69 | 72 | 73 | 73 |
| Precipitation Potential (%) | 1 | 1 | 1 | 1 | 3 | 3 | 3 | 3 | 3 | 3 | 10 | 10 | 10 | 10 | 10 | 10 | 44 | 44 | 44 | 44 | 44 | 44 | 70 | 70 |
| Relative Humidity (%) | 55 | 55 | 58 | 62 | 69 | 74 | 76 | 78 | 81 | 78 | 78 | 78 | 84 | 84 | 87 | 87 | 84 | 81 | 81 | 82 | 82 | 79 | 76 | 76 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | Chc | Chc | Chc | Chc | Chc | Chc | Lkly | Lkly |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | Chc | Chc |
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