March Was World 2nd Warmest, Possibly Signaling New Hot Push, U.S., As Expected Shattered March Heat Records

March, 2026 was tied for the second warmest on
record on Earth. With an El Nino coming,
the month's temperatures could be a signal
that unprecedented hot times could
be on their way.

 The global temperatures in March were back to their old tricks, going back to second hottest on record after several months of "cooler" months that were only in third place in the hottest months list.

Even hotter, more dangerous times might be ahead in the coming months or year or two. 

Actually this March barely squeaked into second place. It was virtually tied with March, 2024. The National Centers for Environmental Information continues: 

"All March global temperature departures ranking in the top 10 during the period 1850-2026 have occurred since 2015. This month marked the 50th consecutive March with a global temperature departure above the 20th century average."

The March, 2026 global temperatures might represent an ominous reversal in ever-so-slightly cooler trends we saw over the past year or so.  La Nina, which tends to cool the global climate, put a stop to a month after month stretch of almost continuous record global heat in 2023 and 2024.

Starting last June, most months were the third warmest on record. That's scary enough, since La Nina could barely put the most unnoticeable dent in the effects of climate change. The effects of La Nina might have peaked this past winter. December, January and February were all the world's fifth warmest, respectively. 

La Nina has faded and it loos like El Nino - which generally warms the global atmosphere - might be developing. It could be a strong one, and that could send the world's temperatures skyrocketing to new, dangerous heights by next year. 

The higher the global temperatures, the higher the risk of killer heat waves, worst droughts, increasingly torrential floods and more intense, less predictable storms. 

THE DETAILS

As always in this age of climate change, cold spots were hard to find in March.  However, there was a notable very cold area in Alaska and the Yukon Territory of Canada. That area was much colder relative to average than we usually see in these monthly reports. 

The only other slightly chilly areas I could find on the NCEI maps were small areas in northwest Africa, Antarctica, the extreme southeastern Pacific ocean and northwestern Siberia.  And what is now almost a perennial area of coolness hovered over an area of the North Atlantic a little south of Greenland. 

Also, although March as a whole in Australia wasn't cold, a sharp frigid snap at the end of the month shattered decades-old March temperature records in many cities, NCEI reports. Two Australian cities reported all-time record lows. 

The most wild hot spot relative to average was the contiguous United States. I'll have more on that below. Other really notable hot spots relative to average were in the entire Arctic (north of that Alaskan cold spot), northern and eastern Europe, large areas of Asia and spots across Africa and Antarctica.

Year to date, the first three months of 2026 is so far the fourth warmest year on record. It's almost certain this year will be among the top 10 warmest on record and likely among the top five. 

As is usually the case for March, Arctic sea ice extent reached its maximum extent of the year on the 15th. It wasn't that extensive. The ice covered 5.52 million square miles, statistically tied with last year for the smallest maximum in the 48 years satellite have been keeping track, according to the National Snow and Ice Data Center. 

UNITED STATES

The contiguous United States was exceptionally 
warm in March, breaking records from 
coast to coast. We'll see if it's a harbinger
 of a torrid summer. 

As we have been reporting, March, 2026 was ridiculously, insanely hot in the Lower 48. Now we have the final receipts.  

NCEI tells us: 

"The average temperature over the contiguous US (CONUS), in March was 50.85 degree F, 9.35 degrees F above average, ranking as the warmest March in the 132-year record. This marks the first time any month's average temperature has exceeded 9 degrees F above its 20th-century baseline. It also includes the warmest 12-month period on record for the CONUS (April, 2025-March 2026)"

Even more remarkably, the nations average high temperature during March was 64.4 degrees, an incredible 11.4 degrees above the 20th century average. That super warm March average daily maximum was actually 0.9 degrees warmer than the average April high. 

 Ten states had their warmest March on record. They were all large states in the southwestern United States, so those made up about a quarter on the United States. Included those ten, 35 states had one of their top 10 warmest Marches on record. 

Put another way, more than 500 counties, covering more than one quarter of the Lower 48 and affecting about 79 million people, recorded their warmest March on record, NCEI tell us. 

The "coldest" state was Maine, but even they were well above normal.  Maine had their 33rd warmest March out of the past 132 years. Vermont was one of a handful of other very warm but not super warm states. The Green Mountain State had its 19th warmest March. 

Mostly because of the continuing record high temperatures in the Southwest and Rockies all year so far, January-March is also the hottest on record. 

There was one particular cold spot in the United States: Alaska. The state had its fourth coldest March out the past 102 years. The last time Alaska had a March that cold was in 1972.

The heat, relative to average, diminished a little in the United States in April, so I'm guessing we'll get a break in the month after month reports of record warmth. 

The United States also had its eight driest March on record. In general, the states that were the warmest in March were also the driest. California had its driest March on record. Eight other states in the Southwest and Southeast had one of their top ten driest Marches.

The only really wet areas was around the eastern Great Lakes. Michigan had its third wettest March. Here in Vermont, March precipitation was right around average.  

It'll be an interesting to see whether March was a prelude to an extraordinarily hot summer, or just another month that really went off the rails.