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Boston

Massachusetts, United States · now 49°, clear

September 2025

Average
74° / 58°
Warmest
Sep 6, 82°
Coldest
Sep 21, 48°
Rain
2.11 in
Wet days
9 days (≥ 0.04 in)
Against normal
1° cooler than normal
Day's low to highNormal: 2015–2024 averageRain
  1. Mon 158°74°−3°
  2. Tue 257°76°−2°
  3. Wed 358°80°+2°
  4. Thu 457°79°+1°
  5. Fri 50.16 in65°81°+3°
  6. Sat 60.33 in65°82°+3°
  7. Sun 70.74 in60°65°−13°
  8. Mon 853°69°−8°
  9. Tue 953°67°−10°
  10. Wed 1057°67°−10°
  11. Thu 1153°77°±0°
  12. Fri 1257°68°−8°
  13. Sat 130.06 in54°74°−1°
  14. Sun 140.00 in59°77°+1°
  15. Mon 1559°72°−4°
  16. Tue 1656°70°−4°
  17. Wed 170.07 in55°69°−4°
  18. Thu 180.03 in62°75°+2°
  19. Fri 1960°78°+5°
  20. Sat 2053°67°−6°
  21. Sun 2148°65°−6°
  22. Mon 2249°70°−1°
  23. Tue 230.10 in60°80°+9°
  24. Wed 240.06 in63°69°−3°
  25. Thu 250.48 in64°73°+1°
  26. Fri 2665°78°+7°
  27. Sat 2761°74°+4°
  28. Sun 280.08 in63°81°+11°
  29. Mon 2958°76°+6°
  30. Tue 3057°71°+1°

2 September in past years, 2016–2025

  1. 2025 Tue57°76°
  2. 2024 Mon0.01 in60°78°
  3. 2023 Sat55°80°
  4. 2022 Fri55°71°
  5. 2021 Thu3.53 in60°73°
  6. 2020 Wed0.56 in62°71°
  7. 2019 Mon0.06 in59°75°
  8. 2018 Sun62°85°
  9. 2017 Sat49°72°
  10. 2016 Fri0.02 in63°75°

· Weather data by ECMWF (CC BY 4.0) via Open-Meteo · Historical weather: ERA5, Copernicus Climate Change Service, via Open-Meteo