| Point Forecast: 4 Miles NE Chicago IL 41.88N 87.65W |
Last Update: 11:51 pm CDT Sep 13, 2026 |
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| Date | 09/14 | 09/15 | ||||||||||||||||||||||
| Hour (CDT) | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 |
| Temperature (°F) | 60 | 60 | 58 | 58 | 58 | 58 | 58 | 61 | 64 | 66 | 68 | 69 | 70 | 71 | 71 | 72 | 71 | 71 | 70 | 69 | 68 | 68 | 67 | 67 |
| Dewpoint (°F) | 52 | 52 | 52 | 52 | 52 | 52 | 52 | 54 | 54 | 53 | 52 | 52 | 52 | 52 | 52 | 52 | 53 | 53 | 54 | 54 | 54 | 53 | 54 | 54 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 6 | 6 | 5 | 5 | 5 | 5 | 3 | 6 | 8 | 9 | 10 | 11 | 11 | 13 | 14 | 14 | 15 | 16 | 17 | 18 | 20 | 20 | 20 | 18 |
| Wind Dir | NNW | NNW | NNW | NNW | NNW | N | N | NE | ESE | SE | SE | SE | SE | SE | SE | SE | SE | SSE | SSE | SSE | SSE | SSE | SSE | S |
| Gust | 14 | 15 | 16 | 17 | 18 | 20 | 21 | 22 | 23 | 25 | 26 | 28 | 26 | 28 | 26 | |||||||||
| Sky Cover (%) | 10 | 8 | 14 | 28 | 45 | 48 | 52 | 47 | 29 | 23 | 25 | 45 | 54 | 52 | 54 | 63 | 69 | 61 | 61 | 60 | 50 | 45 | 44 | 51 |
| Precipitation Potential (%) | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 7 | 10 | 13 | 14 | 12 | 8 | 4 | 1 | 3 |
| Relative Humidity (%) | 76 | 76 | 79 | 80 | 80 | 81 | 80 | 77 | 70 | 63 | 58 | 55 | 52 | 52 | 51 | 49 | 52 | 53 | 55 | 59 | 59 | 60 | 62 | 63 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 09/16 | |||||||||||||||||||||||
| Hour (CDT) | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 |
| Temperature (°F) | 67 | 68 | 68 | 68 | 68 | 68 | 69 | 72 | 74 | 76 | 79 | 82 | 84 | 84 | 85 | 84 | 83 | 80 | 78 | 75 | 74 | 72 | 70 | 70 |
| Dewpoint (°F) | 54 | 55 | 56 | 57 | 58 | 60 | 62 | 64 | 66 | 68 | 69 | 70 | 69 | 70 | 71 | 71 | 70 | 70 | 70 | 69 | 68 | 67 | 66 | 65 |
| Heat Index (°F) | 76 | 79 | 85 | 87 | 89 | 90 | 89 | 87 | 83 | 78 | 75 | |||||||||||||
| Surface Wind (mph) | 18 | 18 | 20 | 18 | 18 | 16 | 16 | 15 | 14 | 14 | 14 | 13 | 13 | 11 | 10 | 9 | 8 | 8 | 7 | 7 | 6 | 6 | 6 | 7 |
| Wind Dir | S | S | S | S | S | SSW | SSW | SSW | SSW | SSW | SSW | SW | SW | SW | WSW | WSW | W | WNW | NW | NNW | NNW | N | N | N |
| Gust | 26 | 26 | 28 | 28 | 26 | 24 | 23 | 22 | 21 | 21 | 21 | 21 | 21 | 20 | 18 | 16 | 14 | |||||||
| Sky Cover (%) | 59 | 60 | 67 | 74 | 76 | 74 | 71 | 71 | 74 | 76 | 73 | 67 | 60 | 65 | 70 | 75 | 79 | 83 | 87 | 84 | 80 | 77 | 80 | 82 |
| Precipitation Potential (%) | 6 | 9 | 15 | 24 | 31 | 41 | 47 | 47 | 47 | 47 | 47 | 47 | 60 | 60 | 60 | 60 | 60 | 60 | 65 | 65 | 65 | 65 | 65 | 65 |
| Relative Humidity (%) | 64 | 64 | 65 | 67 | 70 | 73 | 77 | 77 | 77 | 75 | 72 | 69 | 62 | 63 | 62 | 64 | 67 | 73 | 77 | 80 | 82 | 84 | 87 | 87 |
| Rain | -- | -- | SChc | SChc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly |
| Thunder | -- | -- | SChc | SChc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc |
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