| Point Forecast: Arlington Heights IL 42.09N 87.98W |
Last Update: 4:12 pm CDT Jul 13, 2025 |
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| Date | 07/13 | 07/14 | ||||||||||||||||||||||
| 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 (°F) | 82 | 82 | 81 | 79 | 77 | 74 | 72 | 71 | 70 | 69 | 68 | 67 | 66 | 66 | 65 | 68 | 73 | 77 | 80 | 82 | 84 | 86 | 87 | 87 |
| Dewpoint (°F) | 56 | 57 | 57 | 58 | 59 | 59 | 60 | 61 | 62 | 62 | 62 | 62 | 62 | 62 | 62 | 63 | 64 | 64 | 63 | 62 | 62 | 61 | 61 | 61 |
| Heat Index (°F) | 82 | 82 | 81 | 80 | 77 | 77 | 82 | 83 | 85 | 86 | 87 | 87 | ||||||||||||
| Surface Wind (mph) | 8 | 8 | 7 | 6 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 5 | 5 | 5 | 5 | 6 | 6 | 6 |
| Wind Dir | W | W | W | WNW | WNW | WNW | W | SW | SSW | SW | WSW | W | W | W | W | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 66 | 61 | 53 | 45 | 37 | 35 | 35 | 30 | 25 | 20 | 20 | 17 | 15 | 12 | 11 | 10 | 9 | 5 | 3 | 2 | 3 | 4 | 4 | 4 |
| Precipitation Potential (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Relative Humidity (%) | 42 | 42 | 44 | 47 | 54 | 60 | 65 | 71 | 75 | 80 | 82 | 84 | 88 | 88 | 91 | 85 | 73 | 63 | 55 | 51 | 47 | 44 | 42 | 42 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 07/15 | |||||||||||||||||||||||
| 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 (°F) | 88 | 87 | 86 | 84 | 82 | 78 | 75 | 73 | 72 | 71 | 70 | 69 | 68 | 68 | 68 | 70 | 75 | 80 | 83 | 85 | 87 | 88 | 89 | 90 |
| Dewpoint (°F) | 62 | 62 | 63 | 64 | 64 | 64 | 63 | 63 | 63 | 63 | 63 | 63 | 62 | 63 | 63 | 64 | 65 | 66 | 67 | 67 | 67 | 67 | 67 | 67 |
| Heat Index (°F) | 88 | 87 | 87 | 85 | 83 | 78 | 75 | 75 | 82 | 85 | 88 | 90 | 91 | 92 | 93 | |||||||||
| Surface Wind (mph) | 6 | 5 | 5 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 5 | 5 | 6 | 7 | 7 | 7 | 7 |
| Wind Dir | WSW | WSW | W | SW | SSE | SE | SE | SE | SSE | SSE | S | S | S | S | S | S | S | S | S | S | S | S | S | S |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 5 | 6 | 6 | 7 | 7 | 5 | 6 | 6 | 6 | 7 | 7 | 8 | 10 | 10 | 11 | 11 | 11 | 11 | 11 | 16 | 21 | 27 | 31 | 35 |
| Precipitation Potential (%) | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | 5 | 5 | 5 | 5 | 5 | 5 | 15 | 15 | 15 |
| Relative Humidity (%) | 42 | 44 | 47 | 50 | 56 | 62 | 67 | 71 | 74 | 77 | 78 | 80 | 81 | 83 | 85 | 80 | 70 | 63 | 58 | 54 | 52 | 50 | 49 | 47 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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