Prévisions météo à 5 jours Boston 25 sept. 2026
15°Prévisions météo Boston demain 25 sept. 2026 : couvert, température de 12 °C à 15 °C.
Probabilité de précipitations 85%. Vent jusqu'à 9 m/s (rafales 18 m/s). Humidité de l'air 63–93%, pression atmosphérique 761–769 mm Hg, indice UV jusqu'à 2.4.
Alertes météo
Small Craft Advisory issued September 23 at 3:58PM EDT until September 25 at 8:00AM EDT by NWS Boston/Norton MA
Small Craft Advisory
* WHAT...For the Small Craft Advisory, northeast winds 15 to 25
kt with gusts up to 30 kt and waves 2 to 3 feet. For the Gale
Warning, north winds 20 to 30 kt with gusts up to 45 kt and
waves 2 to 4 feet expected.
* WHERE...Boston Harbor.
* WHEN...For the Small Craft Advisory, until 8 AM EDT Friday.
For the Gale Warning, from 8 AM Friday to 8 PM EDT Saturday.
* IMPACTS...Strong winds will cause hazardous waves which could
capsize or damage vessels and reduce visibility.
Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for hazardous conditions.
Gale Warning issued September 23 at 3:58PM EDT until September 26 at 8:00PM EDT by NWS Boston/Norton MA
Gale Warning
* WHAT...For the Small Craft Advisory, northeast winds 15 to 25
kt with gusts up to 30 kt and waves 2 to 3 feet. For the Gale
Warning, north winds 20 to 30 kt with gusts up to 45 kt and
waves 2 to 4 feet expected.
* WHERE...Boston Harbor.
* WHEN...For the Small Craft Advisory, until 8 AM EDT Friday.
For the Gale Warning, from 8 AM Friday to 8 PM EDT Saturday.
* IMPACTS...Strong winds will cause hazardous waves which could
capsize or damage vessels and reduce visibility.
Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for hazardous conditions.
Small Craft Advisory issued September 24 at 2:05AM EDT until September 25 at 8:00AM EDT by NWS Boston/Norton MA
Small Craft Advisory
* WHAT...For the Small Craft Advisory, northeast winds 15 to 25
kt with gusts up to 30 kt and waves 2 to 4 feet. For the Gale
Warning, north winds 20 to 30 kt with gusts up to 40 kt and
waves 2 to 4 feet expected.
* WHERE...Boston Harbor.
* WHEN...For the Small Craft Advisory, until 8 AM EDT Friday.
For the Gale Warning, from 8 AM Friday to 8 PM EDT Saturday.
* IMPACTS...Strong winds will cause hazardous waves which could
capsize or damage vessels and reduce visibility.
Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for hazardous conditions.
Gale Warning issued September 24 at 2:05AM EDT until September 26 at 8:00PM EDT by NWS Boston/Norton MA
Gale Warning
* WHAT...For the Small Craft Advisory, northeast winds 15 to 25
kt with gusts up to 30 kt and waves 2 to 4 feet. For the Gale
Warning, north winds 20 to 30 kt with gusts up to 40 kt and
waves 2 to 4 feet expected.
* WHERE...Boston Harbor.
* WHEN...For the Small Craft Advisory, until 8 AM EDT Friday.
For the Gale Warning, from 8 AM Friday to 8 PM EDT Saturday.
* IMPACTS...Strong winds will cause hazardous waves which could
capsize or damage vessels and reduce visibility.
Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for hazardous conditions.
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Graphique
Tableau
| Heure | Météo | Température | Risque de pluie | Couverture nuageuse | Humidité | Pression | Vent | Indice UV |
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Couvert | 14 °C | 16% | 100% | 64% | 769 mm Hg | NNE 31° 5.31 (10.81) m/s | 0 |
| 01:00 |  Nuageux | 14 °C | 14% | 85% | 66% | 769 mm Hg | NNE 24° 5.69 (11.22) m/s | 0 |
| 02:00 |  Partiellement nuageux | 14 °C | 9% | 57% | 65% | 767 mm Hg | NNE 22° 6.31 (12.31) m/s | 0 |
| 03:00 | Couvert | 13 °C | 18% | 100% | 68% | 767 mm Hg | NNE 22° 6.39 (12.22) m/s | 0 |
| 04:00 | Couvert | 13 °C | 19% | 100% | 70% | 767 mm Hg | NNE 21° 6.89 (13.03) m/s | 0 |
| 05:00 | Couvert | 13 °C | 18% | 100% | 69% | 767 mm Hg | NNE 18° 6.69 (12.72) m/s | 0 |
| 06:00 | Couvert | 13 °C | 17% | 100% | 67% | 767 mm Hg | NNE 23° 7.19 (13.53) m/s | 0 |
| 07:00 | Couvert | 14 °C | 17% | 100% | 67% | 766 mm Hg | NNE 22° 7.39 (13.69) m/s | 0 |
| 08:00 | Couvert | 14 °C | 17% | 100% | 67% | 766 mm Hg | NNE 22° 7.89 (13.92) m/s | 0.3 |
| 09:00 | Couvert | 14 °C | 17% | 100% | 67% | 766 mm Hg | NNE 19° 7.81 (14.11) m/s | 0.9 |
| 10:00 | Couvert | 14 °C | 17% | 100% | 66% | 766 mm Hg | NNE 25° 8 (14.39) m/s | 1.6 |
| 11:00 | Couvert | 14 °C | 17% | 100% | 67% | 765 mm Hg | NNE 25° 8.81 (15.36) m/s | 2 |
| 12:00 | Couvert | 15 °C | 16% | 100% | 63% | 764 mm Hg | NNE 30° 8.89 (15.14) m/s | 2.3 |
| 13:00 | Couvert | 15 °C | 16% | 100% | 64% | 765 mm Hg | NE 34° 8.31 (14.42) m/s | 2.4 |
| 14:00 | Couvert | 15 °C | 16% | 100% | 65% | 764 mm Hg | NE 39° 8.19 (14.03) m/s | 2.4 |
| 15:00 |  Pluie éparse possible | 15 °C | 18% (0.02 mm/h) | 100% | 65% | 764 mm Hg | NE 39° 8.39 (14.53) m/s | 1.5 |
| 16:00 | Pluie éparse possible | 15 °C | 22% (0.07 mm/h) | 100% | 65% | 763 mm Hg | NE 34° 8.19 (15.11) m/s | 0.9 |
| 17:00 | Pluie éparse possible | 14 °C | 29% (0.12 mm/h) | 100% | 71% | 763 mm Hg | NE 40° 8.19 (15.42) m/s | 0.2 |
| 18:00 |  Pluie modérée | 13 °C | 80% (2.55 mm/h) | 100% | 83% | 764 mm Hg | NE 47° 8.69 (16) m/s | 0.1 |
| 19:00 |  Pluie légère | 12 °C | 75% (1.13 mm/h) | 100% | 90% | 763 mm Hg | NE 40° 9 (17.31) m/s | 0 |
| 20:00 | Pluie légère | 12 °C | 81% (2.23 mm/h) | 100% | 89% | 763 mm Hg | NNE 25° 8.5 (18) m/s | 0 |
| 21:00 |  Pluie modérée | 12 °C | 85% (2.94 mm/h) | 100% | 92% | 762 mm Hg | NNE 16° 7.61 (17.11) m/s | 0 |
| 22:00 | Pluie modérée | 13 °C | 85% (2.74 mm/h) | 100% | 93% | 761 mm Hg | NNE 12° 6.61 (15) m/s | 0 |
| 23:00 | Pluie légère | 13 °C | 83% (2.34 mm/h) | 100% | 92% | 761 mm Hg | NNE 26° 6.61 (15.33) m/s | 0 |
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Sources de données et méthodologie
Nos prévisions météo sont alimentées par un fournisseur professionnel de données météorologiques qui agrège les données des services météorologiques nationaux, des observations satellites, des réseaux radar et de plus de 80 000 stations météorologiques dans le monde. Les données de prévision sont mises à jour plusieurs fois par jour. Nous convertissons les données brutes en résumés clairs — vitesse du vent en m/s, pression en mm Hg — afin que vous puissiez planifier votre journée en toute confiance.