5-day weather forecast Boston 17-08-2026
Weather forecast Boston Monday, August 17 17.08.2026: patchy rain possible, temperature from 18 °C to 28 °C.
Precipitation probability 73%. Wind up to 3.89 m/s (gusts 6.72 m/s). Air humidity 55–99%, atmospheric pressure 756–759 mm Hg, UV index up to 6.8.
5 days at a glance — tap a day to open it
Sunrise 05:53
Sunset 19:42
Sunset 19:42
Waxing Crescent27% illuminated
Moonrise 11:35 · Moonset 21:51
Moonrise 11:35 · Moonset 21:51
Chart
Table
| Temperature | Rain chance | Cloud cover | Humidity | Pressure | Wind | UV Index | ||
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Light drizzle | 18 °C | 64% (0.36 mm/hr) | 100% | 97% | 758 mm Hg | SSE 161° 3.5 (5.17) m/s | 0 |
| 01:00 |  Light rain shower | 18 °C | 67% (0.53 mm/hr) | 100% | 98% | 758 mm Hg | SSE 151° 3.19 (4.75) m/s | 0 |
| 02:00 | Light drizzle | 19 °C | 73% (0.54 mm/hr) | 100% | 98% | 757 mm Hg | SE 131° 2.39 (3.58) m/s | 0 |
| 03:00 | Light drizzle | 19 °C | 61% (0.29 mm/hr) | 100% | 99% | 756 mm Hg | E 95° 1.69 (2.53) m/s | 0 |
| 04:00 | Light drizzle | 19 °C | 60% (0.26 mm/hr) | 100% | 99% | 756 mm Hg | NE 53° 1.39 (2.14) m/s | 0 |
| 05:00 | Light drizzle | 19 °C | 71% (0.47 mm/hr) | 100% | 99% | 756 mm Hg | NE 36° 1.39 (2.14) m/s | 0 |
| 06:00 |  Fog | 19 °C | 54% (0.11 mm/hr) | 100% | 99% | 756 mm Hg | NE 54° 1.39 (2.14) m/s | 0 |
| 07:00 | Fog | 20 °C | 45% (0.02 mm/hr) | 100% | 98% | 757 mm Hg | ENE 74° 1.5 (2.22) m/s | 0 |
| 08:00 |  Light rain shower | 20 °C | 48% (0.17 mm/hr) | 100% | 97% | 757 mm Hg | ENE 62° 1.39 (1.97) m/s | 0.2 |
| 09:00 |  Mist | 20 °C | 49% (0.1 mm/hr) | 96% | 96% | 757 mm Hg | NNE 23° 1.19 (1.67) m/s | 0.6 |
| 10:00 | Mist | 20 °C | 40% (0.05 mm/hr) | 89% | 95% | 757 mm Hg | N 353° 1.39 (1.89) m/s | 1.1 |
| 11:00 |  Patchy rain possible | 21 °C | 26% (0.02 mm/hr) | 78% | 89% | 757 mm Hg | NNW 345° 1.69 (2.17) m/s | 2.8 |
| 12:00 | Patchy rain possible | 24 °C | 18% (0.01 mm/hr) | 91% | 72% | 757 mm Hg | NNW 332° 2.39 (2.75) m/s | 6.5 |
| 13:00 |  Cloudy | 26 °C | 12% | 83% | 62% | 756 mm Hg | NNW 331° 2 (2.31) m/s | 6.8 |
| 14:00 | Patchy rain possible | 27 °C | 13% (0.02 mm/hr) | 93% | 57% | 756 mm Hg | NW 326° 2.19 (2.53) m/s | 6.2 |
| 15:00 | Patchy rain possible | 28 °C | 14% (0.02 mm/hr) | 100% | 55% | 756 mm Hg | NNW 336° 1.81 (2.17) m/s | 3.9 |
| 16:00 | Patchy rain possible | 26 °C | 10% (0.02 mm/hr) | 62% | 61% | 756 mm Hg | NE 50° 1.31 (1.75) m/s | 1.6 |
| 17:00 | Patchy rain possible | 24 °C | 19% (0.04 mm/hr) | 78% | 75% | 756 mm Hg | E 87° 2.11 (3.39) m/s | 0.4 |
| 18:00 | Patchy rain possible | 23 °C | 21% (0.05 mm/hr) | 71% | 80% | 757 mm Hg | E 99° 2.11 (3.47) m/s | 0.1 |
| 19:00 | Patchy rain possible | 22 °C | 23% (0.01 mm/hr) | 85% | 83% | 757 mm Hg | ESE 110° 1.31 (2.22) m/s | 0 |
| 20:00 |  Patchy rain possible | 22 °C | 25% (0.03 mm/hr) | 81% | 85% | 758 mm Hg | E 96° 0.61 (1.08) m/s | 0 |
| 21:00 |  Partly cloudy | 22 °C | 15% | 43% | 84% | 758 mm Hg | NW 312° 0.5 (0.97) m/s | 0 |
| 22:00 |  Clear | 22 °C | 8% | 21% | 74% | 758 mm Hg | NNW 332° 3.11 (5.42) m/s | 0 |
| 23:00 | Clear | 21 °C | 7% | 20% | 69% | 759 mm Hg | NNW 331° 3.89 (6.72) m/s | 0 |
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Data Sources & Methodology
Our weather forecasts are powered by a professional weather data provider that aggregates data from national weather services, satellite observations, radar networks, and over 80,000 weather stations worldwide. Forecast data is updated multiple times daily. We convert raw data into clear summaries — wind speed in m/s, pressure in mmHg — so you can plan your day with confidence.