5-day weather forecast Boston 27-05-2026

Weather forecast Boston Wednesday, May 27 27.05.2026: sunny, temperature from 16 °C to 27 °C.

Precipitation probability 72%. Wind up to 4.31 m/s (gusts 8.19 m/s). Air humidity 37–74%, atmospheric pressure 757–760 mm Hg, UV index up to 8.3.

Sunrise 05:14
Sunset 20:07

First Quarter65% illuminated
Moonrise 13:27 · Moonset 01:48

Chart

Table

← Tue, May 26

Wed, May 27, 2026

Thu, May 28 →

Forecast from 16 °C to 27 °C and precipitation

Temperature & Precipitation
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Temperature (°C)	17	17	17	16	16	16	17	19	21	23	24	25	26	27	27	27	25	24	22	21	20	20	19	19
Precipitation (mm/hr)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0.01	0	0

Cloud cover and precipitation probability

Cloud cover & Rain chance
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Cloud cover (%)	3	5	10	17	11	10	11	8	16	5	4	13	45	29	23	23	25	43	43	47	74	96	99	75
Rain chance (%)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	72	0	0

Wind speed and direction

Wind & Wind gust
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Wind (m/s)	4.31	4.11	3.89	3.89	3.39	3.31	3.11	3.11	3.89	3.89	4.19	4.31	3.69	3.69	3.89	2.69	2.81	2.39	1.11	1.11	1	0.61	0.61	1.5
Wind gust (m/s)	8.06	7.94	8.19	8.19	7.14	6.92	6.5	5.47	5.5	5	5.25	5.25	4.53	4.61	5	3.81	3.83	3.69	2	2.03	1.92	1.19	1.11	2.69
Wind direction (°)	SW 232°	SW 236°	WSW 241°	WSW 242°	WSW 250°	WSW 249°	WSW 251°	WSW 253°	W 268°	W 279°	WNW 291°	WNW 300°	WNW 301°	NW 305°	NW 309°	NW 317°	NNW 335°	N 1°	NNE 21°	NE 42°	ENE 60°	NNW 344°	NW 313°	NNW 334°

Air humidity

Humidity
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Humidity (%)	72	73	73	73	73	74	73	70	64	60	55	49	43	39	37	40	42	50	57	60	62	65	62	60

Atmospheric pressure

Pressure
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Pressure (mm Hg)	760	760	759	759	759	759	759	759	759	758	758	758	758	758	757	757	757	757	757	757	757	758	758	758

Ultraviolet index

UV Index
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
UV Index	0	0	0	0	0	0	0.1	0.6	1.5	3.1	5	6.8	8.1	8.3	7.4	4.3	3.4	1.4	0.2	0.1	0	0	0	0

← Tue, May 26

Wed, May 27, 2026

Thu, May 28 →

Boston on the map

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.

Learn more about our methodology →