Currently: 56 °F. Passing clouds. (Weather station: Logan International Airport, USA). See more current weatherSeptember 2021 Weather in Boston — Graph
°F
Time
Wind
(mph)
(mph)
Temp
(°F)
(°F)
50
53
56
59
62
65
68
71
74
77
80
83
86
Wed, Sep 1
Lo:72
12 am
Hi:75
9
Lo:72
6 am
Hi:73
6
Lo:66
12 pm
Hi:72
4
Lo:63
6 pm
Hi:64
14
Thu, Sep 2
Lo:61
12 am
Hi:63
19
Lo:63
6 am
Hi:70
18
Lo:70
12 pm
Hi:75
10
Lo:64
6 pm
Hi:73
11
Fri, Sep 3
Lo:59
12 am
Hi:63
11
Lo:61
6 am
Hi:72
11
Lo:72
12 pm
Hi:75
11
Lo:66
6 pm
Hi:73
9
Sat, Sep 4
Lo:63
12 am
Hi:66
12
Lo:64
6 am
Hi:77
11
Lo:79
12 pm
Hi:81
11
Lo:68
6 pm
Hi:77
7
Sun, Sep 5
Lo:64
12 am
Hi:68
6
Lo:64
6 am
Hi:72
8
Lo:72
12 pm
Hi:73
12
Lo:70
6 pm
Hi:72
10
Mon, Sep 6
Lo:70
12 am
Hi:70
6
Lo:70
6 am
Hi:82
7
Lo:81
12 pm
Hi:84
14
Lo:72
6 pm
Hi:79
14
Tue, Sep 7
Lo:66
12 am
Hi:70
12
Lo:64
6 am
Hi:79
10
Lo:79
12 pm
Hi:81
11
Lo:68
6 pm
Hi:77
9
Wed, Sep 8
Lo:64
12 am
Hi:68
7
Lo:68
6 am
Hi:84
13
Lo:79
12 pm
Hi:84
20
Lo:75
6 pm
Hi:79
14
Thu, Sep 9
Lo:75
12 am
Hi:75
11
Lo:73
6 am
Hi:75
10
Lo:73
12 pm
Hi:75
7
Lo:70
6 pm
Hi:72
2
Fri, Sep 10
Lo:66
12 am
Hi:68
7
Lo:66
6 am
Hi:77
12
Lo:73
12 pm
Hi:77
15
Lo:64
6 pm
Hi:72
11
Sat, Sep 11
Lo:61
12 am
Hi:63
9
Lo:61
6 am
Hi:75
7
Lo:75
12 pm
Hi:79
16
Lo:66
6 pm
Hi:73
12
Sun, Sep 12
Lo:66
12 am
Hi:66
11
Lo:66
6 am
Hi:81
18
Lo:81
12 pm
Hi:82
20
Lo:75
6 pm
Hi:79
12
Mon, Sep 13
Lo:73
12 am
Hi:77
9
Lo:70
6 am
Hi:79
11
Lo:79
12 pm
Hi:82
9
Lo:70
6 pm
Hi:77
8
Tue, Sep 14
Lo:64
12 am
Hi:68
4
Lo:64
6 am
Hi:72
6
Lo:70
12 pm
Hi:72
14
Lo:68
6 pm
Hi:70
9
Wed, Sep 15
Lo:68
12 am
Hi:72
10
Lo:70
6 am
Hi:82
8
Lo:82
12 pm
Hi:84
17
Lo:75
6 pm
Hi:79
9
Thu, Sep 16
Lo:70
12 am
Hi:75
7
Lo:68
6 am
Hi:70
6
Lo:66
12 pm
Hi:72
11
Lo:64
6 pm
Hi:66
7
Fri, Sep 17
Lo:66
12 am
Hi:66
7
Lo:66
6 am
Hi:68
11
Lo:66
12 pm
Hi:70
9
Lo:66
6 pm
Hi:66
6
Sat, Sep 18
Lo:66
12 am
Hi:66
6
Lo:66
6 am
Hi:72
6
Lo:72
12 pm
Hi:73
6
Lo:70
6 pm
Hi:72
3
Sun, Sep 19
Lo:66
12 am
Hi:70
9
Lo:64
6 am
Hi:72
12
Lo:66
12 pm
Hi:72
9
Lo:63
6 pm
Hi:64
6
Mon, Sep 20
Lo:57
12 am
Hi:64
2
Lo:57
6 am
Hi:70
4
Lo:66
12 pm
Hi:72
12
Lo:61
6 pm
Hi:64
7
Tue, Sep 21
Lo:59
12 am
Hi:61
1
Lo:57
6 am
Hi:70
6
Lo:70
12 pm
Hi:72
11
Lo:68
6 pm
Hi:72
6
Wed, Sep 22
Lo:66
12 am
Hi:70
4
Lo:70
6 am
Hi:77
7
Lo:75
12 pm
Hi:81
12
Lo:70
6 pm
Hi:73
9
Thu, Sep 23
Lo:68
12 am
Hi:70
3
Lo:70
6 am
Hi:81
9
Lo:75
12 pm
Hi:81
11
Lo:68
6 pm
Hi:72
9
Fri, Sep 24
Lo:70
12 am
Hi:72
7
Lo:70
6 am
Hi:79
15
Lo:77
12 pm
Hi:79
15
Lo:72
6 pm
Hi:77
9
Sat, Sep 25
Lo:66
12 am
Hi:70
7
Lo:66
6 am
Hi:73
7
Lo:68
12 pm
Hi:73
7
Lo:64
6 pm
Hi:66
4
Sun, Sep 26
Lo:64
12 am
Hi:66
4
Lo:64
6 am
Hi:73
8
Lo:72
12 pm
Hi:75
14
Lo:64
6 pm
Hi:70
12
Mon, Sep 27
Lo:59
12 am
Hi:63
11
Lo:57
6 am
Hi:73
9
Lo:73
12 pm
Hi:75
13
Lo:72
6 pm
Hi:73
17
Tue, Sep 28
Lo:70
12 am
Hi:70
11
Lo:66
6 am
Hi:70
7
Lo:66
12 pm
Hi:70
7
Lo:61
6 pm
Hi:66
9
Wed, Sep 29
Lo:54
12 am
Hi:57
12
Lo:52
6 am
Hi:64
11
Lo:63
12 pm
Hi:64
8
Lo:57
6 pm
Hi:63
7
Thu, Sep 30
Lo:55
12 am
Hi:57
9
Lo:55
6 am
Hi:61
11
Lo:61
12 pm
Hi:63
11
Lo:54
6 pm
Hi:61
9
Wednesday, September 1, 2021, 12:00 am — 6:00 am
75 / 72 °F
Passing clouds.
Humidity: 65%
Barometer: 29.78 "Hg
W
Wind: 9.321 mph
High & Low Weather Summary for September 2021
| Temperature | Humidity | Pressure | |
|---|---|---|---|
| High | 85 °F (Sep 8, 2:54 pm) | 93% (Sep 2, 12:54 am) | 30.43 "Hg (Sep 2, 12:54 am) |
| Low | 52 °F (Sep 29, 6:54 am) | 32% (Sep 26, 4:54 pm) | 29.62 "Hg (Sep 2, 7:06 am) |
| Average | 70 °F | 70% | 29.99 "Hg |
| * Reported Sep 1 12:54 am — Sep 30 11:54 pm, Boston. Weather by CustomWeather, © 2025 | |||
Note: Actual official high and low records may vary slightly from our data, if they occured in-between our weather recording intervals... More about our weather records
Boston Weather History for September 1, 2021
Scroll right to see more
| Conditions | Comfort | |||||||
|---|---|---|---|---|---|---|---|---|
| Time | Temp | Weather | Wind | Humidity | Barometer | Visibility | ||
| 12:54 am Wed, Sep 1 |  | 75 °F | Passing clouds. | 10 mph | ↑ | 60% | 29.76 "Hg | 10 mi |
| 1:54 am | | 74 °F | Passing clouds. | 9 mph | ↑ | 62% | 29.77 "Hg | 10 mi |
| 2:54 am | | 72 °F | Passing clouds. | 10 mph | ↑ | 66% | 29.77 "Hg | 10 mi |
| 3:54 am | | 72 °F | Passing clouds. | 8 mph | ↑ | 66% | 29.78 "Hg | 10 mi |
| 4:54 am |  | 71 °F | Partly cloudy. | 9 mph | ↑ | 68% | 29.79 "Hg | 10 mi |
| 5:54 am | | 71 °F | Partly cloudy. | 9 mph | ↑ | 66% | 29.80 "Hg | 10 mi |
| 6:54 am |  | 71 °F | Mostly cloudy. | 6 mph | ↑ | 66% | 29.82 "Hg | 10 mi |
| 7:54 am | | 73 °F | Mostly cloudy. | 6 mph | ↑ | 57% | 29.83 "Hg | 10 mi |
| 8:54 am | | 74 °F | Mostly cloudy. | 5 mph | ↑ | 53% | 29.84 "Hg | 10 mi |
| 9:54 am | | 74 °F | Mostly cloudy. | 6 mph | ↑ | 57% | 29.86 "Hg | 10 mi |
| 10:54 am |  | 73 °F | Light rain. Overcast. | 6 mph | ↑ | 57% | 29.87 "Hg | 10 mi |
| 11:54 am | | 71 °F | Light rain. Overcast. | 7 mph | ↑ | 68% | 29.87 "Hg | 10 mi |
| 12:54 pm | | 72 °F | Light rain. Mostly cloudy. | 3 mph | ↑ | 68% | 29.86 "Hg | 10 mi |
| 1:54 pm | | 70 °F | Light rain. Cloudy. | 3 mph | ↑ | 71% | 29.87 "Hg | 7 mi |
| 2:54 pm | | 70 °F | Light rain. Mostly cloudy. | 6 mph | ↑ | 79% | 29.86 "Hg | 10 mi |
| 3:54 pm | | 70 °F | Light rain. Mostly cloudy. | 6 mph | ↑ | 79% | 29.86 "Hg | 10 mi |
| 4:54 pm |  | 69 °F | Rain. Mostly cloudy. | 6 mph | ↑ | 79% | 29.85 "Hg | 5 mi |
| 5:54 pm |  | 67 °F | Heavy rain. Fog. | 3 mph | ↑ | 87% | 29.84 "Hg | 4 mi |
| 7:06 pm | | 65 °F | Heavy rain. Mostly cloudy. | 13 mph | ↑ | 85% | 29.86 "Hg | 4 mi |
| 7:54 pm | | 65 °F | Heavy rain. Overcast. | 7 mph | ↑ | 85% | 29.86 "Hg | 4 mi |
| 8:54 pm |  | 65 °F | Low clouds. | 12 mph | ↑ | 87% | 29.87 "Hg | 10 mi |
| 9:54 pm | | 62 °F | Heavy rain. Fog. | 20 mph | ↑ | 86% | 29.82 "Hg | 4 mi |
| 10:54 pm |  | 63 °F | Light rain. Overcast. | 15 mph | ↑ | 84% | 29.80 "Hg | 6 mi |
| 11:29 pm | | 62 °F | Heavy rain. Fog. | 15 mph | ↑ | 90% | 29.81 "Hg | 2 mi |
| 11:54 pm | | 62 °F | Heavy rain. Fog. | 15 mph | ↑ | 90% | 29.77 "Hg | 2 mi |
| Weather by CustomWeather, © 2025 | ||||||||