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| Point Forecast: 4 Miles NE Chicago IL 41.88N 87.65W |
Last Update: 3:15 am CDT Sep 22, 2021 |
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| Date | 09/22 | 09/23 | ||||||||||||||||||||||
| 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) | 61 | 61 | 61 | 60 | 60 | 61 | 61 | 61 | 62 | 62 | 63 | 63 | 63 | 62 | 62 | 62 | 62 | 62 | 62 | 62 | 61 | 60 | 60 | 59 |
| Dewpoint (°F) | 53 | 52 | 52 | 52 | 52 | 51 | 51 | 51 | 51 | 51 | 51 | 50 | 50 | 50 | 50 | 50 | 49 | 49 | 49 | 49 | 50 | 50 | 51 | 50 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 22 | 23 | 23 | 23 | 24 | 25 | 25 | 26 | 28 | 29 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 29 | 26 | 25 | 24 | 24 | 24 | 24 |
| Wind Dir | NNE | NNE | NNE | NNE | NNE | NNE | NNE | NNE | NNE | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N |
| Gust | 33 | 32 | 32 | 32 | 33 | 36 | 37 | 39 | 40 | 41 | 41 | 43 | 43 | 43 | 43 | 43 | 41 | 39 | 37 | 34 | 33 | 33 | 33 | 33 |
| Sky Cover (%) | 92 | 91 | 93 | 95 | 97 | 97 | 97 | 97 | 95 | 93 | 92 | 91 | 91 | 90 | 88 | 87 | 85 | 89 | 92 | 96 | 90 | 85 | 79 | 78 |
| Precipitation Potential (%) | 42 | 37 | 38 | 41 | 48 | 48 | 48 | 31 | 31 | 31 | 14 | 14 | 14 | 12 | 12 | 12 | 13 | 13 | 13 | 14 | 14 | 14 | 19 | 19 |
| Relative Humidity (%) | 75 | 72 | 72 | 75 | 75 | 70 | 70 | 70 | 67 | 67 | 65 | 62 | 62 | 65 | 65 | 65 | 62 | 62 | 62 | 62 | 67 | 69 | 72 | 72 |
| Rain | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 09/24 | |||||||||||||||||||||||
| 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) | 58 | 57 | 57 | 56 | 55 | 57 | 58 | 59 | 60 | 60 | 61 | 61 | 62 | 63 | 62 | 61 | 62 | 61 | 61 | 61 | 60 | 60 | 59 | 59 |
| Dewpoint (°F) | 50 | 50 | 49 | 49 | 49 | 49 | 50 | 50 | 49 | 49 | 48 | 47 | 47 | 46 | 46 | 46 | 45 | 46 | 46 | 46 | 46 | 46 | 46 | 46 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 25 | 25 | 25 | 25 | 25 | 25 | 24 | 24 | 24 | 24 | 24 | 24 | 23 | 21 | 18 | 17 | 15 | 13 | 11 | 10 | 9 | 9 | 9 | 9 |
| Wind Dir | N | N | N | N | N | N | N | NNW | NNW | NNW | NNW | NNW | NNW | NNW | NNW | NNW | NNW | NW | WNW | WNW | WNW | W | W | W |
| Gust | 34 | 34 | 34 | 34 | 34 | 34 | 33 | 33 | 33 | 33 | 33 | 32 | 31 | 29 | 28 | 26 | 24 | 21 | 17 | 14 | 14 | 14 | ||
| Sky Cover (%) | 77 | 77 | 81 | 86 | 91 | 92 | 93 | 94 | 94 | 94 | 93 | 91 | 89 | 87 | 81 | 74 | 28 | 28 | 27 | 26 | 21 | 12 | 7 | 7 |
| Precipitation Potential (%) | 19 | 18 | 18 | 18 | 49 | 49 | 49 | 49 | 49 | 49 | 34 | 34 | 34 | 34 | 34 | 34 | 13 | 13 | 13 | 13 | 13 | 13 | 2 | 2 |
| Relative Humidity (%) | 75 | 77 | 75 | 77 | 80 | 75 | 75 | 72 | 67 | 67 | 62 | 60 | 58 | 54 | 56 | 58 | 54 | 58 | 58 | 58 | 60 | 60 | 62 | 62 |
| Rain | SChc | SChc | SChc | SChc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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