| Point Forecast: Rialto CA 34.11N 117.37W (Elev. 381 m) |
Last Update: 12:56 pm PDT May 18, 2024 |
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| Date | 05/18 | 05/19 | ||||||||||||||||||||||
| Hour (PDT) | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 |
| Temperature (°C) | 24 | 22 | 21 | 18 | 16 | 15 | 14 | 13 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 12 | 13 | 15 | 17 | 19 | 21 | 22 | 23 | 23 |
| Dewpoint (°C) | 10 | 10 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 10 | 11 | 11 | 11 | 11 | 11 | 10 | 10 | 9 | 9 | 9 | 9 |
| Heat Index (°C) | 24 | |||||||||||||||||||||||
| Surface Wind (mph) | 11 | 11 | 11 | 8 | 8 | 7 | 6 | 6 | 5 | 5 | 5 | 5 | 3 | 3 | 2 | 2 | 2 | 2 | 3 | 3 | 5 | 8 | 8 | 9 |
| Wind Dir | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | S | S | SW | SW | SW | SW | SW | SW | SW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 4 | 4 | 4 | 4 | 4 | 4 | 44 | 44 | 44 | 44 | 44 | 44 | 76 | 76 | 76 | 76 | 76 | 76 | 3 | 3 | 3 | 3 | 3 | 3 |
| 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 (%) | 40 | 45 | 53 | 63 | 72 | 76 | 80 | 85 | 89 | 89 | 93 | 92 | 93 | 95 | 94 | 88 | 82 | 73 | 64 | 55 | 49 | 44 | 41 | 41 |
| Rain | -- | -- | -- | -- | -- | -- | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 05/20 | |||||||||||||||||||||||
| Hour (PDT) | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 |
| Temperature (°C) | 23 | 22 | 20 | 17 | 16 | 14 | 14 | 13 | 13 | 12 | 13 | 12 | 12 | 13 | 13 | 12 | 14 | 14 | 14 | 18 | 19 | 18 | 20 | 20 |
| Dewpoint (°C) | 10 | 10 | 10 | 10 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 10 | 9 | 9 |
| Heat Index (°C) | ||||||||||||||||||||||||
| Surface Wind (mph) | 13 | 13 | 13 | 10 | 8 | 8 | 5 | 5 | 5 | 5 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 5 | 5 | 5 | 6 | 9 | 10 | 10 |
| Wind Dir | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | S | S | SW | SW | SW | SW | SW | SW | SW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 7 | 7 | 7 | 7 | 7 | 7 | 46 | 46 | 46 | 46 | 46 | 46 | 81 | 81 | 81 | 81 | 81 | 81 | 44 | 44 | 44 | 44 | 44 | 44 |
| 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 (%) | 43 | 46 | 53 | 63 | 70 | 78 | 84 | 86 | 89 | 94 | 91 | 92 | 94 | 89 | 88 | 95 | 85 | 80 | 82 | 64 | 57 | 60 | 51 | 50 |
| Rain | -- | -- | -- | -- | -- | -- | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
