| Point Forecast: Mount Prospect IL 42.06N 87.93W |
Last Update: 3:21 pm CDT May 12, 2026 |
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| Date | 05/12 | 05/13 | ||||||||||||||||||||||
| Hour (CDT) | 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) | 23 | 22 | 21 | 21 | 19 | 19 | 18 | 16 | 16 | 16 | 14 | 13 | 12 | 12 | 11 | 11 | 11 | 12 | 13 | 14 | 15 | 16 | 16 | 16 |
| Dewpoint (°C) | 8 | 8 | 8 | 8 | 9 | 10 | 10 | 9 | 8 | 8 | 7 | 7 | 7 | 6 | 6 | 4 | 4 | 4 | 3 | 3 | 3 | 3 | 3 | 3 |
| Heat Index (°C) | ||||||||||||||||||||||||
| Surface Wind (mph) | 18 | 17 | 16 | 13 | 11 | 13 | 11 | 11 | 11 | 11 | 11 | 11 | 10 | 11 | 11 | 14 | 16 | 17 | 17 | 17 | 17 | 17 | 16 | 16 |
| Wind Dir | WSW | WSW | WSW | SW | SW | SW | WSW | W | WNW | WNW | WNW | NW | NW | NW | NW | NW | NNW | NNW | NNW | NNW | NNW | NNW | NNW | N |
| Gust | 36 | 36 | 31 | 22 | 21 | 22 | 22 | 22 | 21 | 22 | 22 | 22 | 21 | 22 | 24 | 26 | 26 | 26 | 25 | 26 | 25 | 25 | 25 | 25 |
| Sky Cover (%) | 84 | 81 | 78 | 78 | 80 | 62 | 31 | 15 | 6 | 11 | 15 | 20 | 24 | 34 | 48 | 47 | 60 | 64 | 55 | 57 | 55 | 50 | 50 | 52 |
| Precipitation Potential (%) | 45 | 16 | 14 | 11 | 30 | 9 | 0 | 0 | 0 | 0 | 0 | 1 | 7 | 7 | 7 | 13 | 13 | 13 | 12 | 12 | 12 | 11 | 11 | 11 |
| Relative Humidity (%) | 38 | 40 | 42 | 44 | 50 | 55 | 61 | 61 | 61 | 58 | 60 | 64 | 67 | 69 | 70 | 68 | 62 | 57 | 51 | 48 | 45 | 43 | 42 | 42 |
| Rain | Chc | SChc | -- | -- | Chc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | SChc | SChc | -- | -- | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 05/14 | |||||||||||||||||||||||
| Hour (CDT) | 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) | 16 | 16 | 16 | 14 | 13 | 11 | 10 | 9 | 8 | 7 | 7 | 6 | 6 | 6 | 6 | 7 | 9 | 13 | 15 | 17 | 18 | 18 | 19 | 19 |
| Dewpoint (°C) | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 2 |
| Heat Index (°C) | ||||||||||||||||||||||||
| Surface Wind (mph) | 16 | 15 | 14 | 11 | 7 | 5 | 3 | 2 | 2 | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 5 | 5 | 6 | 7 | 7 |
| Wind Dir | N | NNE | NNE | NE | NNE | N | N | N | NNW | NNW | NNW | NNW | NNW | NNW | NNW | NNW | N | NNE | NNE | NE | ENE | ENE | ENE | E |
| Gust | 24 | 23 | 22 | |||||||||||||||||||||
| Sky Cover (%) | 55 | 56 | 54 | 43 | 33 | 21 | 17 | 18 | 6 | 5 | 5 | 4 | 4 | 4 | 6 | 5 | 0 | 2 | 4 | 4 | 5 | 5 | 7 | 10 |
| Precipitation Potential (%) | 9 | 9 | 9 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Relative Humidity (%) | 41 | 42 | 43 | 45 | 51 | 57 | 62 | 66 | 70 | 72 | 75 | 77 | 79 | 80 | 80 | 75 | 64 | 52 | 43 | 38 | 35 | 33 | 32 | 31 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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