Winter 2026-27 in southeast Michigan: what NOAA’s outlook says, and how much to trust it

What does NOAA’s outlook say about winter 2026-27?

As of October 2026, the official outlooks are the set NOAA’s Climate Prediction Center (CPC) issued on September 17, 2026. For each three-month season, CPC gives the odds that average temperature and total precipitation will be above, near or below the 1991-2020 normal. For Macomb County:

As of October 2026: outlooks issued by CPC on September 17, 2026, read for Macomb County from CPC’s maps and GIS files. CPC replaces them on October 15 and November 19, 2026, and this page will be updated when it does. "Equal chances" means no lean either way.

CPC calls the Great Lakes lean toward dry weather "rather weak."

What is El Niño doing as of October 2026?

CPC’s ENSO diagnostic discussion of September 10, 2026 kept an El Niño Advisory in effect. Sea surface temperatures in the Niño-3.4 region of the equatorial Pacific ran 1.8°C above normal in August. CPC put the chance of a very strong El Niño this winter at greater than 90 percent, and gave a 75 percent chance that October-December beats every El Niño since 1950, at +2.5°C or more on its Relative Oceanic Niño Index (RONI). The next update is due October 8, 2026.

CPC says an event this strong raises the chances of typical El Niño effects without making them certain, and it flagged what is different this time. The three biggest El Niños since 1950, in 1982-83, 1997-98 and 2015-16, all came with a positive Pacific Decadal Oscillation (PDO). This year the PDO is fairly strongly negative (-1.11 in August), and CPC says that may dampen the usual El Niño effects in some areas.

What does El Niño usually mean for southeast Michigan?

Milder and drier, more often than not. NWS Detroit/Pontiac’s 2023-24 winter outlook explained that El Niño tends to steer storms across the southern U.S., away from this area, and that more than half of the 29 El Niño winters since 1940 brought below-average snowfall here. It also said El Niño does not rule out cold outbreaks or heavy snow.

Detroit’s record shows both halves of that. We matched NOAA’s daily snowfall for Detroit to CPC’s index for each winter since 1950:

A winter counts as El Niño or La Niña when CPC’s RONI table marks December-February as part of a warm or cold episode. Snowfall is the July-June season in Detroit’s official record, now kept at Detroit Metro Airport, from NOAA’s ACIS. 1995-96 is left out because 13 days of its record are missing.

Six of the 10 least snowy Detroit winters since 1950 were El Niño winters, among them 1982-83, 1997-98 and 2023-24. But El Niño winters also produced three of the 10 snowiest: 1977-78 (61.7 inches), 2002-03 (60.9) and 2004-05 (63.8). The long-run picture is in Macomb County snowfall averages.

What happened in the strongest El Niño winters?

Only four winters since 1950 reached +2.0°C or more on CPC’s index in December-February:

Visits modeled from Detroit Metro Airport daily snowfall and snow depth with the method in how many plowable snows per winter, where a typical winter needs about 10.

Together they averaged about 31 inches and 6 visits. Four winters is a small sample, though, and the negative PDO means this winter may not follow the pattern.

Why is a tilt in the odds not a forecast of totals?

• A lean is not a lock. A 50 to 60 percent chance of a warmer-than-normal winter leaves a 40 to 50 percent chance of a near-normal or colder one.
• The outlook covers averages, not storms. It describes average temperature and total precipitation over three months, not how many storms come, how big they are or when. NWS Detroit/Pontiac’s El Niño outlook said it plainly: "this is not a snowfall outlook."
• Plow visits follow storms, not totals. Last winter Detroit Metro got 39.5 inches, below the long-run average, yet needed an estimated 12 visits, as many as the 61-inch winter of 2017-18.

How good are CPC’s winter outlooks?

Better than chance, by a modest margin. CPC grades every outlook with a Heidke skill score, on which 0 means no better than chance and 100 means a perfect forecast. For the December-February outlooks it issues each November, the national scores over the 31 winters from 1995-96 through 2025-26 averaged about 16 for temperature and 10 for precipitation. The temperature outlook scored below zero, worse than chance, in 8 of those winters.

A strong El Niño helps, but not every time. In 2015-16 the winter temperature outlook scored 45 and the precipitation outlook -6. Today’s outlook was issued three months before December, and CPC will update it twice before winter starts.

How should you budget for winter 2026-27?

The same way as any winter: plan for a normal one. Seasonal outlooks are not reliable enough to buy against, and this one does not change that.

• Typical winter: about 10 visits at a 2-inch trigger, and 7 to 12 in most winters. Most one- and two-car driveways pay the $75 minimum for residential snow removal: about $750, or $525 to $900.
• Heavy winter: 2013-14 would have needed about 21 visits, or $1,575.
• Per-visit billing already rewards a mild winter: fewer storms, fewer visits, no bet required.
• A seasonal agreement buys a fixed cost, not a forecast. Decide on that basis; see seasonal vs per-push.
• Do the fall jobs anyway: stakes, stop notes and booking do not depend on El Niño.