| Point Forecast: Crystal Lake IL 42.23N 88.36W |
Last Update: 10:51 am CDT Jun 17, 2026 |
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| Date | 06/17 | 06/18 | ||||||||||||||||||||||
| Hour (CDT) | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 |
| Temperature (°F) | 60 | 58 | 58 | 60 | 61 | 62 | 63 | 65 | 66 | 65 | 64 | 64 | 63 | 62 | 61 | 59 | 58 | 58 | 57 | 57 | 57 | 58 | 61 | 63 |
| Dewpoint (°F) | 55 | 55 | 57 | 59 | 60 | 60 | 61 | 62 | 62 | 62 | 61 | 60 | 60 | 59 | 57 | 56 | 56 | 55 | 55 | 54 | 54 | 54 | 56 | 57 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 17 | 18 | 21 | 16 | 15 | 15 | 11 | 9 | 9 | 10 | 10 | 13 | 14 | 16 | 17 | 17 | 17 | 17 | 17 | 17 | 16 | 14 | 15 | 14 |
| Wind Dir | SSE | SE | SSE | SSE | ENE | E | ESE | SSW | WSW | WSW | WSW | W | WSW | W | W | W | W | W | W | WNW | WNW | WNW | WNW | WNW |
| Gust | 29 | 31 | 30 | 24 | 23 | 23 | 18 | 14 | 23 | 26 | 28 | 28 | 26 | 28 | 26 | 22 | 20 | |||||||
| Sky Cover (%) | 100 | 100 | 100 | 100 | 95 | 81 | 70 | 63 | 61 | 54 | 56 | 53 | 38 | 40 | 32 | 24 | 51 | 52 | 75 | 82 | 89 | 78 | 76 | 77 |
| Precipitation Potential (%) | 91 | 100 | 93 | 92 | 91 | 68 | 54 | 36 | 31 | 33 | 27 | 14 | 11 | 9 | 4 | 3 | 4 | 5 | 7 | 7 | 3 | 2 | 0 | 0 |
| Relative Humidity (%) | 86 | 87 | 93 | 96 | 98 | 93 | 93 | 89 | 88 | 91 | 89 | 89 | 90 | 89 | 88 | 90 | 90 | 90 | 91 | 91 | 90 | 87 | 82 | 80 |
| Rain | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Lkly | Chc | Chc | Chc | Chc | Chc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | SChc | SChc | Chc | Chc | Chc | Lkly | Chc | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 06/19 | |||||||||||||||||||||||
| Hour (CDT) | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 |
| Temperature (°F) | 65 | 68 | 69 | 71 | 72 | 72 | 72 | 72 | 71 | 67 | 64 | 61 | 59 | 58 | 57 | 56 | 54 | 53 | 53 | 54 | 56 | 59 | 63 | 66 |
| Dewpoint (°F) | 58 | 58 | 58 | 58 | 58 | 58 | 58 | 58 | 58 | 58 | 57 | 56 | 55 | 54 | 54 | 53 | 52 | 52 | 52 | 52 | 53 | 54 | 54 | 55 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 14 | 14 | 13 | 13 | 13 | 11 | 10 | 9 | 9 | 7 | 6 | 6 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 6 | 7 | 9 |
| Wind Dir | WNW | WNW | WNW | WNW | WNW | WNW | W | W | WNW | WNW | WNW | W | W | WNW | WNW | WNW | WNW | WNW | WNW | WNW | WNW | WNW | WNW | WNW |
| Gust | 21 | 21 | 21 | 20 | 20 | 18 | 15 | 14 | 11 | 13 | 14 | |||||||||||||
| Sky Cover (%) | 78 | 70 | 45 | 27 | 48 | 22 | 50 | 59 | 39 | 39 | 23 | 7 | 6 | 4 | 3 | 3 | 3 | 3 | 3 | 4 | 4 | 4 | 3 | 3 |
| Precipitation Potential (%) | 0 | 0 | 0 | 7 | 1 | 0 | 0 | 0 | 4 | 4 | 4 | 4 | 4 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Relative Humidity (%) | 76 | 72 | 67 | 63 | 61 | 60 | 59 | 61 | 63 | 71 | 78 | 82 | 86 | 87 | 89 | 90 | 92 | 94 | 95 | 94 | 90 | 82 | 73 | 66 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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