Boston, MA 14-Day Forecast
Massachusetts, United States 🇺🇸
64°
Clear right now
Today: high 79°, low 63°
Updated 9 min ago
Boston weather for the next 14 days
Friday, September 18
Overcast High 76° Low 63°Precipitation
57%
· 0.06 in
Max wind
12 mph
Humidity
65%
UV index
6 - Moderate
Sunrise / sunset
06:27 AM / 06:49 PM
Saturday, September 19
Sunny High 61° Low 50°Precipitation
4%
· 0.0 in
Max wind
11 mph
Humidity
51%
UV index
6 - Moderate
Sunrise / sunset
06:28 AM / 06:47 PM
Sunday, September 20
Light rain shower High 61° Low 50°Precipitation
89%
· 0.87 in
Max wind
16 mph
Humidity
85%
UV index
1 - Low
Sunrise / sunset
06:29 AM / 06:45 PM
Monday, September 21
Overcast High 62° Low 51°Precipitation
10%
· 0.0 in
Max wind
14 mph
Humidity
70%
UV index
5 - Moderate
Sunrise / sunset
06:30 AM / 06:43 PM
Tuesday, September 22
Sunny High 59° Low 53°Precipitation
8%
· 0.0 in
Max wind
10 mph
Humidity
63%
UV index
5 - Moderate
Sunrise / sunset
06:31 AM / 06:42 PM
Wednesday, September 23
Sunny High 64° Low 52°Precipitation
7%
· 0.0 in
Max wind
9 mph
Humidity
64%
UV index
5 - Moderate
Sunrise / sunset
06:32 AM / 06:40 PM
Thursday, September 24
Sunny High 71° Low 55°Precipitation
12%
· 0.0 in
Max wind
6 mph
Humidity
75%
UV index
6 - High
Sunrise / sunset
06:33 AM / 06:38 PM
Friday, September 25
Sunny High 75° Low 56°Precipitation
3%
· 0.0 in
Max wind
14 mph
Humidity
58%
UV index
6 - High
Sunrise / sunset
06:34 AM / 06:36 PM
Saturday, September 26
Sunny High 61° Low 49°Precipitation
2%
· 0.0 in
Max wind
14 mph
Humidity
49%
UV index
5 - Moderate
Sunrise / sunset
06:36 AM / 06:35 PM
Sunday, September 27
Sunny High 64° Low 48°Precipitation
2%
· 0.0 in
Max wind
10 mph
Humidity
49%
UV index
5 - Moderate
Sunrise / sunset
06:37 AM / 06:33 PM
Monday, September 28
Sunny High 71° Low 51°Precipitation
1%
· 0.0 in
Max wind
11 mph
Humidity
46%
UV index
6 - High
Sunrise / sunset
06:38 AM / 06:31 PM
Tuesday, September 29
Sunny High 76° Low 55°Precipitation
5%
· 0.0 in
Max wind
10 mph
Humidity
57%
UV index
6 - High
Sunrise / sunset
06:39 AM / 06:29 PM
Wednesday, September 30
Sunny High 77° Low 59°Precipitation
6%
· 0.0 in
Max wind
11 mph
Humidity
65%
UV index
6 - High
Sunrise / sunset
06:40 AM / 06:28 PM
Boston 14-day outlook: the story
The warmest day of Boston's 14-day outlook is Thursday, September 17 with a high near 79°F (26°C); the coolest night comes Sunday, September 27, dipping to 48°F (9°C). The trend points warmer: week two runs about 5°F above week one. Highs over the next two weeks average 66°F (19°C), about 8°F (4°C) below the typical September high of 74°F (23°C).
Precipitation is most likely on Thursday 17, Friday 18, Sunday 20; the wettest day looks like Sunday, September 20 with about 0.87 in (22.2 mm) expected. For the weekend, expect Saturday 61°F (16°C) and sunny / Sunday 61°F (16°C) and light rain shower.
For typical conditions month by month, see the Boston climate & average temperatures guide.
Boston forecast questions
Will it rain in Boston this week?
The forecast currently shows meaningful precipitation chances on 3 of the next 14 days, peaking around Sunday, September 20.
What will be the warmest day in Boston over the next 14 days?
Thursday, September 17, with a forecast high near 79°F (26°C).
How accurate is a 14-day forecast for Boston?
Days 1-3 are highly reliable, days 4-7 capture the overall pattern well, and days 8-14 indicate trends rather than exact figures - check back as the date approaches; this page refreshes throughout the day.
Average temperatures in Boston by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 37° | 23° | 10 | 4.2 in | 6.0 h/day | 67% |
| February | 40° | 22° | 10 | 3.5 in | 6.7 h/day | 69% |
| March | 46° | 29° | 12 | 4.3 in | 7.9 h/day | 67% |
| April | 56° | 39° | 12 | 4.2 in | 8.4 h/day | 69% |
| May | 67° | 49° | 11 | 3.1 in | 10.2 h/day | 70% |
| June | 77° | 59° | 11 | 3.4 in | 11.2 h/day | 71% |
| July | 83° | 66° | 12 | 4.3 in | 11.4 h/day | 72% |
| August | 82° | 65° | 11 | 2.9 in | 10.9 h/day | 73% |
| September | 74° | 59° | 9 | 4.3 in | 8.9 h/day | 75% |
| October | 63° | 48° | 10 | 4.7 in | 7.5 h/day | 76% |
| November | 51° | 36° | 8 | 3.3 in | 6.6 h/day | 71% |
| December | 42° | 28° | 11 | 4.7 in | 5.7 h/day | 73% |