An illustration of the jet stream pattern causing record warmth from the Upper Midwest to the Northeast (National Weather Service)

Chicago: Hit 85 degrees as of 4 p.m. (CT) setting (or tying) a new record high for the 7th straight day there - the second most records in a row in any season of the year (since 1871). Chicago has hit 80 six times in the last 7 days whereas it only averages one day of 80s in April per year. Only once in 140 years of observations has April produced as many 80+ days as this March. Today’s high of 85 is third warmest March temperature on record, only topped by 88 (3/29/1986) and 87 (3/31/81). More info from Chicago’s National Weather Service (NWS) office: Historic and Unprecedented March Warmth Continues

Chicago’s record-tying high temperature of 78 Monday was much warmer than Phoenix (62), Las Vegas (55), San Diego (58) and Los Angeles (57). (Source: ChicagoWeatherCenter)

Detroit: Soared to at least 84 today, the warmest March day on record. More info from Detroit’s NWS office: Unprecedented Warm March Weather Continues

Milwaukee: Set an all-time March high of 83 today, its earliest 80+ day on record. More info from Milwaukee’s NWS office: Record Setting Warmth

Traverse City: Set an all-time March high of 83 Monday (source: Climate Central) only to be broken today when it has climbed to 85.

Pellston, MI: Rose to 80 the last 4 days - the first 80 F days in March in its history. The high of 82 Monday broke the previous record (56, 1976) by an incredible 26 degrees. (Source: Jeff Masters) Today, it has reached at least 83, setting another new March record.

Minneapolis: Has set record highs in 8 of the last 10 days. The Twin Cities also set records for dew point, a measure of humidity, in each of the last five days. More info from the Minneapolis NWS office: Record Setting Weather For Temperatures and Moisture

Rochester and International Falls, MN: Amazingly, in both of these towns, the morning low temperatures tied or broke record highs in recent days! In Rochester Sunday, the low dropped to 62, two degrees above the record high of 60. In International Falls, the low Monday morning of 60 tied the record high for the date. (Sources: Wild Wild Science blog and Jeff Masters)

Bangor and Caribou, Maine: Bangor soared to 76 on Monday, its earliest 70F day on record. On Monday, Caribou hit 64, its earliest 60F day on record. But today, it did 7 degrees better (at least), reaching 73 - its earliest 70F day on record (and breaking its daily record by 23 degrees). More info from the NWS: Record shattering warmth

Other select records so far today: Columbus, OH (82) Toledo, Ohio (81), Lansing, MI (80), Saginaw, MI (80), Madison, WI (77), Indianapolis (80), Hatteras, NC (75), Buffalo (75), Knoxville (83), Albany (75), Cincinnati (81), Cleveland (80), Duluth (60), South Bend (81), Green Bay (77), Pittsburgh (77). More records:

Related blog posts:

Midwest, Great Lakes basking in unprecedented warm weather for March

Historic record warm weather brings summer to central and eastern U.S.

Greenhouse gases and global warming activate the steroid era of our atmosphere

Back door cold fronts kick heat out of mid-Atlantic, Great Lakes (from Friday)