| Point Forecast: Gaithersburg MD 39.15N 77.21W (Elev. 443 ft) |
Last Update: 7:30 pm EDT Jul 14, 2025 |
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| Date | 07/14 | 07/15 | ||||||||||||||||||||||
| Hour (EDT) | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 |
| Temperature (°F) | 75 | 74 | 74 | 74 | 73 | 73 | 73 | 72 | 72 | 72 | 75 | 77 | 79 | 81 | 82 | 84 | 85 | 85 | 84 | 83 | 83 | 81 | 80 | 79 |
| Dewpoint (°F) | 73 | 73 | 73 | 73 | 73 | 73 | 72 | 72 | 72 | 72 | 73 | 74 | 74 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 75 |
| Heat Index (°F) | 75 | 75 | 77 | 79 | 87 | 89 | 92 | 94 | 94 | 92 | 90 | 90 | 87 | 85 | 79 | |||||||||
| Surface Wind (mph) | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 2 | 2 | 2 | 2 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| Wind Dir | NE | S | SE | S | W | W | N | NE | E | N | N | N | N | N | NE | E | SE | SE | SE | SE | S | S | S | SE |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 82 | 79 | 62 | 65 | 68 | 53 | 62 | 71 | 71 | 55 | 52 | 60 | 60 | 53 | 54 | 49 | 62 | 57 | 61 | 73 | 67 | 65 | 65 | 55 |
| Precipitation Potential (%) | 42 | 34 | 24 | 22 | 21 | 13 | 11 | 10 | 7 | 8 | 11 | 12 | 13 | 13 | 16 | 21 | 33 | 35 | 36 | 59 | 51 | 47 | 22 | 22 |
| Relative Humidity (%) | 94 | 97 | 97 | 97 | 100 | 100 | 97 | 100 | 100 | 100 | 94 | 90 | 85 | 82 | 79 | 74 | 72 | 72 | 74 | 77 | 77 | 82 | 85 | 88 |
| Rain | Chc | Chc | SChc | SChc | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | Chc | Chc | Chc | Lkly | Chc | Chc | SChc | SChc |
| Thunder | Chc | Chc | SChc | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | Chc | Chc | Chc | Chc | Chc | Chc | SChc | SChc |
| Date | 07/16 | |||||||||||||||||||||||
| Hour (EDT) | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 |
| Temperature (°F) | 78 | 76 | 75 | 74 | 74 | 74 | 74 | 74 | 74 | 75 | 76 | 78 | 81 | 83 | 85 | 87 | 88 | 88 | 87 | 86 | 84 | 82 | 80 | 79 |
| Dewpoint (°F) | 75 | 75 | 74 | 74 | 73 | 73 | 73 | 73 | 73 | 74 | 74 | 75 | 75 | 76 | 76 | 76 | 76 | 76 | 75 | 75 | 75 | 75 | 75 | 75 |
| Heat Index (°F) | 78 | 76 | 75 | 75 | 76 | 78 | 87 | 91 | 94 | 98 | 99 | 99 | 96 | 95 | 92 | 89 | 85 | 79 | ||||||
| Surface Wind (mph) | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 5 | 5 | 6 | 6 | 6 | 6 | 6 | 7 | 7 | 7 | 6 | 6 | 6 |
| Wind Dir | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 51 | 47 | 50 | 54 | 57 | 61 | 65 | 69 | 69 | 69 | 69 | 64 | 58 | 53 | 61 | 70 | 78 | 78 | 78 | 78 | 78 | 78 | 75 | 74 |
| Precipitation Potential (%) | 22 | 22 | 22 | 22 | 18 | 18 | 18 | 18 | 18 | 18 | 20 | 20 | 20 | 20 | 20 | 20 | 66 | 66 | 66 | 66 | 66 | 66 | 26 | 26 |
| Relative Humidity (%) | 91 | 97 | 97 | 100 | 97 | 97 | 97 | 97 | 97 | 97 | 94 | 91 | 82 | 80 | 75 | 70 | 68 | 68 | 68 | 70 | 74 | 79 | 85 | 88 |
| Rain | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Chc | Chc |
| Thunder | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc |
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