Boston

September 1991

Average

21° / 13°

Warmest

Sep 17, 31°

Coldest

Sep 30, 4°

Rain

171.5 mm

Wet days

9 days (≥ 1 mm)

Against normal

1° cooler than normal

1. Sun 113°19°−4°
2. Mon 211°22°−2°
3. Tue 314°26°+2°
4. Wed 40.8 mm17°29°+5°
5. Thu 525.8 mm15°21°−3°
6. Fri 60.7 mm14°20°−4°
7. Sat 714°24°+1°
8. Sun 816°26°+2°
9. Mon 915°24°±0°
10. Tue 1017°28°+4°
11. Wed 1113°22°−2°
12. Thu 1211°21°−3°
13. Fri 1310°21°−2°
14. Sat 142.5 mm14°18°−4°
15. Sun 1513.1 mm15°20°−1°
16. Mon 163.2 mm20°29°+9°
17. Tue 170.6 mm22°31°+10°
18. Wed 180.7 mm18°24°+4°
19. Thu 1915.1 mm14°26°+5°
20. Fri 2016.3 mm10°16°−5°
21. Sat 218°14°−7°
22. Sun 227°18°−3°
23. Mon 233.0 mm11°21°±0°
24. Tue 240.4 mm14°21°±0°
25. Wed 2537.7 mm14°21°±0°
26. Thu 2651.6 mm12°16°−5°
27. Fri 279°17°−3°
28. Sat 287°15°−5°
29. Sun 296°19°−1°
30. Mon 304°13°−7°