Major Heat Wave to Bring Triple-Digit Heat, Break Records in New York, Other Northeast Cities

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The first major heat wave of the summer is tightening its grip on the Northeast and Mid-Atlantic, with daily high temperatures threatening to break centuries-old records. The scorching forecast follows on the heels of historic Saharan dust intrusions that blanketed much of the South in recent weeks, highlighting the growing intensity and unpredictability of summer weather.

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The persistent heat dome – fueled by a northward bulge in the jet stream – has settled over a wide stretch of the Eastern Seaboard, pushing temperatures into the triple digits across cities from Virginia to Massachusetts. Forecasts show highs well above normal, in some cases approaching or exceeding previous all-time records for late June. And with more than 50 million people under heat alerts, the heat dome could have serious health consequences.

The heat wave marks a dramatic shift from average conditions, with temperatures across parts of New England and the Mid-Atlantic projected to soar up to 10°F above historical records set over a century ago. While cities like Phoenix and Dallas are used to 100°F days, places like Worcester, Massachusetts, and Waterbury, Connecticut, are experiencing life-threatening heat this early in the year for the first time. A closer look at the data reveals the cities that will break heat records this week.

To determine the cities most likely to break heat records this week, Climate Crisis 247 reviewed 72-hour temperature forecasts and historical daily records from the NOAA. Cities were ranked based on the gap between forecast highs for June 23-26, 2025, and historical maximum temperatures for those dates. Gridded forecast data are from the National Digital Forecast Database, while historical temperatures are from the Global Historical Climatology Network daily program of the National Centers for Environmental Information. Weather stations were matched to places using nearest neighbor analysis and were limited to cities within 50 miles of the city centroid. Only cities with at least 20,000 residents were considered.

25. Hoboken, NJ

• Forecast high, June 23: 99.9°F (+6.9°F above 1910 record)
• Forecast high, June 24: 92.9°F (-4.1°F below 1923 record)
• Forecast high, June 25: 99.9°F (-0.1°F below 1923 record)
• Forecast high, June 26: 99.9°F (-0.1°F below 1952 record)
• Total population: 58,754

 

24. Reston, VA

• Forecast high, June 23: 98.0°F (+5.0°F above 2024 record)
• Forecast high, June 24: 98.0°F (+1.9°F above 2015 record)
• Forecast high, June 25: 98.0°F (+6.1°F above 2010 record)
• Forecast high, June 26: 98.0°F (+7.0°F above 1997 record)
• Total population: 62,339

 

23. Wheaton, MD

• Forecast high, June 23: 98.0°F (+7.0°F above 1911 record)
• Forecast high, June 24: 97.4°F (+2.4°F above 1948 record)
• Forecast high, June 25: 98.0°F (+3.0°F above 1904 record)
• Forecast high, June 26: 98.0°F (+1.9°F above 1904 record)
• Total population: 52,775

 

22. Scranton, PA

• Forecast high, June 23: 97.0°F (+7.0°F above 1957 record)
• Forecast high, June 24: 92.2°F (-1.7°F below 1965 record)
• Forecast high, June 25: 97.0°F (+2.0°F above 1943 record)
• Forecast high, June 26: 97.0°F (-1.1°F below 1952 record)
• Total population: 76,119

 

21. West Hartford, CT

• Forecast high, June 23: 101.0°F (+7.1°F above 1997 record)
• Forecast high, June 24: 94.5°F (+0.6°F above 2013 record)
• Forecast high, June 25: 101.0°F (+6.0°F above 1943 record)
• Forecast high, June 26: 101.0°F (+1.0°F above 1952 record)
• Total population: 64,088

 

20. Malden, MA

• Forecast high, June 23: 99.0°F (+5.1°F above 1894 record)
• Forecast high, June 24: 83.0°F (-10.0°F below 1914 record)
• Forecast high, June 25: 99.0°F (+5.1°F above 1909 record)
• Forecast high, June 26: 99.0°F (+7.1°F above 1904 record)
• Total population: 65,463

 

19. Waltham, MA

• Forecast high, June 23: 100.3°F (+7.3°F above 1965 record)
• Forecast high, June 24: 85.2°F (-6.7°F below 1957 record)
• Forecast high, June 25: 100.3°F (+6.4°F above 1943 record)
• Forecast high, June 26: 100.3°F (+2.2°F above 1952 record)
• Total population: 64,711

 

18. Silver Spring, MD

• Forecast high, June 23: 98.3°F (+7.3°F above 1911 record)
• Forecast high, June 24: 98.3°F (+3.3°F above 1948 record)
• Forecast high, June 25: 98.3°F (+3.3°F above 1904 record)
• Forecast high, June 26: 98.3°F (+2.2°F above 1904 record)
• Total population: 81,808

 

17. East Hartford, CT

• Forecast high, June 23: 101.3°F (+7.4°F above 1997 record)
• Forecast high, June 24: 93.9°F (+0.0°F below 2013 record)
• Forecast high, June 25: 101.3°F (+6.3°F above 1943 record)
• Forecast high, June 26: 101.3°F (+1.3°F above 1952 record)
• Total population: 50,942

 

16. Taunton, MA

• Forecast high, June 23: 100.5°F (+7.5°F above 1894 record)
• Forecast high, June 24: 86.9°F (-7.0°F below 1975 record)
• Forecast high, June 25: 100.5°F (+5.5°F above 1943 record)
• Forecast high, June 26: 100.5°F (+1.5°F above 1952 record)
• Total population: 59,436

 

15. Bristol, CT

• Forecast high, June 23: 99.5°F (+4.5°F above 2012 record)
• Forecast high, June 24: 93.2°F (+2.2°F above 1965 record)
• Forecast high, June 25: 99.5°F (+7.6°F above 2003 record)
• Forecast high, June 26: 99.5°F (+5.6°F above 1999 record)
• Total population: 61,052

 

14. Cranston, RI

• Forecast high, June 23: 99.6°F (+7.7°F above 1983 record)
• Forecast high, June 24: 89.4°F (-4.5°F below 1980 record)
• Forecast high, June 25: 99.6°F (+3.5°F above 1980 record)
• Forecast high, June 26: 99.6°F (+2.6°F above 1952 record)
• Total population: 82,691

 

13. Framingham, MA

• Forecast high, June 23: 100.8°F (+7.8°F above 1894 record)
• Forecast high, June 24: 87.5°F (-6.4°F below 1965 record)
• Forecast high, June 25: 100.8°F (+3.8°F above 1943 record)
• Forecast high, June 26: 100.8°F (+3.8°F above 1943 record)
• Total population: 71,805

 

12. Hartford, CT

• Forecast high, June 23: 101.8°F (+7.9°F above 1997 record)
• Forecast high, June 24: 94.8°F (+0.9°F above 2013 record)
• Forecast high, June 25: 101.8°F (+6.8°F above 1943 record)
• Forecast high, June 26: 101.8°F (+1.8°F above 1952 record)
• Total population: 121,057

 

11. Somerville, MA

• Forecast high, June 23: 99.9°F (+6.0°F above 1894 record)
• Forecast high, June 24: 83.9°F (-9.1°F below 1914 record)
• Forecast high, June 25: 99.9°F (+6.0°F above 1909 record)
• Forecast high, June 26: 99.9°F (+8.0°F above 1904 record)
• Total population: 80,464

 

10. Medford, MA

• Forecast high, June 23: 99.9°F (+6.0°F above 1894 record)
• Forecast high, June 24: 83.6°F (-9.4°F below 1914 record)
• Forecast high, June 25: 99.9°F (+6.0°F above 1909 record)
• Forecast high, June 26: 99.9°F (+8.0°F above 1904 record)
• Total population: 61,748

 

9. Fall River, MA

• Forecast high, June 23: 98.2°F (+8.2°F above 1965 record)
• Forecast high, June 24: 86.5°F (-2.6°F below 1921 record)
• Forecast high, June 25: 98.2°F (+1.2°F above 1943 record)
• Forecast high, June 26: 98.2°F (+0.1°F above 1952 record)
• Total population: 93,638

 

8. White Plains, NY

• Forecast high, June 23: 99.2°F (+8.2°F above 2024 record)
• Forecast high, June 24: 92.9°F (-1.0°F below 1975 record)
• Forecast high, June 25: 99.2°F (+7.3°F above 1966 record)
• Forecast high, June 26: 99.2°F (+3.1°F above 1952 record)
• Total population: 59,421

 

7. Providence, RI

• Forecast high, June 23: 100.2°F (+8.3°F above 1894 record)
• Forecast high, June 24: 90.1°F (-2.9°F below 1914 record)
• Forecast high, June 25: 100.2°F (+5.2°F above 1914 record)
• Forecast high, June 26: 100.2°F (+6.3°F above 1901 record)
• Total population: 189,715

 

6. Yonkers, NY

• Forecast high, June 23: 100.2°F (+8.3°F above 1901 record)
• Forecast high, June 24: 93.7°F (-0.2°F below 1908 record)
• Forecast high, June 25: 100.2°F (+1.2°F above 1914 record)
• Forecast high, June 26: 100.2°F (+2.1°F above 1904 record)
• Total population: 209,780

 

5. New Haven, CT

• Forecast high, June 23: 97.5°F (+8.4°F above 2010 record)
• Forecast high, June 24: 90.0°F (-1.9°F below 1966 record)
• Forecast high, June 25: 97.5°F (+4.5°F above 1952 record)
• Forecast high, June 26: 97.5°F (+5.6°F above 1949 record)
• Total population: 135,736

 

4. Cambridge, MA

• Forecast high, June 23: 100.3°F (+6.4°F above 1894 record)
• Forecast high, June 24: 84.3°F (-8.7°F below 1914 record)
• Forecast high, June 25: 100.3°F (+6.4°F above 1909 record)
• Forecast high, June 26: 100.3°F (+8.4°F above 1904 record)
• Total population: 117,962

 

3. Pawtucket, RI

• Forecast high, June 23: 100.5°F (+8.6°F above 1894 record)
• Forecast high, June 24: 89.2°F (-3.8°F below 1914 record)
• Forecast high, June 25: 100.5°F (+5.5°F above 1914 record)
• Forecast high, June 26: 100.5°F (+6.6°F above 1901 record)
• Total population: 75,176

 

2. Waterbury, CT

• Forecast high, June 23: 99.8°F (+9.8°F above 1927 record)
• Forecast high, June 24: 93.4°F (+0.4°F above 1938 record)
• Forecast high, June 25: 99.8°F (+2.8°F above 1943 record)
• Forecast high, June 26: 99.8°F (-0.2°F below 1952 record)
• Total population: 114,480

 

1. Worcester, MA

• Forecast high, June 23: 99.0°F (+9.9°F above 1894 record)
• Forecast high, June 24: 88.9°F (-2.1°F below 1914 record)
• Forecast high, June 25: 99.0°F (+7.1°F above 1907 record)
• Forecast high, June 26: 99.0°F (+4.0°F above 1952 record)
• Total population: 204,191

 

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