Duluth, MN 55803 Weather

St. Louis County3:05 PM CDT46.87°N, 92.09°W

Current conditions

Clear
70°
Clear
Feels like 70°
High 66°·Low 41°
WindCalm
Humidity43%
Dew point46°
Pressure30.15 inHg
Visibility10 mi
Cloud cover1%
UV index2 Low
Sunrise7:35 AM
Sunset6:12 PM

Observed at Duluth International Airport · 25 min ago

Forecast

10-day
  • This Afternoon

    Sunny. High near 66, with temperatures falling to around 64 in the afternoon. Northwest wind around 5 mph.

  • Tonight

    Mostly clear. Low around 41, with temperatures rising to around 43 overnight. Northeast wind around 5 mph.

  • Thursday

    Mostly sunny. High near 60, with temperatures falling to around 56 in the afternoon. East wind 5 to 10 mph.

National Weather Service forecast updated 1 hr ago.

  1. Now Sunny 65°
  2. 4 PM Sunny 66°
  3. 5 PM Sunny 64°
  4. 6 PM Clear 60°
  5. 7 PM Clear 57°
  6. 8 PM Mostly Clear 52°
  7. 9 PM Mostly Clear 51°
  8. 10 PM Mostly Clear 50°
  9. 11 PM Mostly Clear 49°
  10. Thu12 AM Mostly Clear 47°
  11. 1 AM Clear 46°
  12. 2 AM Clear 45°
  13. 3 AM Clear 44°
  14. 4 AM Mostly Clear 43°
  15. 5 AM Clear 43°
  16. 6 AM Sunny 43°
  17. 7 AM Sunny 43°
  18. 8 AM Mostly Sunny 42°
  19. 9 AM Mostly Sunny 45°
  20. 10 AM Mostly Sunny 49°
  21. 11 AM Sunny 53°
  22. 12 PM Mostly Sunny 55°
  23. 1 PM Mostly Sunny 58°
  24. 2 PM Mostly Sunny 58°

10-day forecast

Details
  1. TodayOct 21 Sunny Sunny41°66°
  2. ThuOct 22 Mostly Sunny Mostly Sunny42°60°
  3. FriOct 23 Partly Sunny Partly Sunny25%54°64°
  4. SatOct 24 Chance Rain Showers Chance Rain Showers31%43°69°
  5. SunOct 25 Mostly Cloudy Mostly Cloudy18%35°52°
  6. MonOct 26 Slight Chance Rain Showers Slight Chance Rain Showers18%32°45°
  7. TueOct 27 Slight Chance Rain Showers Slight Chance Rain Showers22%35°47°
  8. WedOct 28 Cloudy Cloudy43°55°
  9. ThuOct 29 Cloudy Cloudy35°43°
  10. FriOct 30 Partly cloudy Partly cloudy31°43°

Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.

Radar

Full map
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Weather news near Duluth

More weather news
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Air quality

48
Good
Fine particles (PM2.5)

Air quality is satisfactory, and air pollution poses little or no risk.

Forecast

  • WedGood (33)
  • ThuGood
  • FriGood

Duluth Area, MN reporting area · 2 hrs ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.

Sun & moon

Sunrise 7:35 AM
Sunset 6:12 PM
Daylight 10 h 36 min (−3 min 10 s tomorrow)
Waxing Gibbous · 79% lit
Moonrise 4:08 PM Moonset 2:17 AM
Full moon Oct 26 New moon Nov 9

Almanac

Monthly
Normal high / low50° / 34°
Record high80° (1901)
Record low14° (1913)
Wettest1.24 in (2019)
Yesterday63° / 38°
Month to date0.91 in (normal 2.01 in)

Duluth Area, records since 1874. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).

Nearby

Forecasters' discussion

From the National Weather Service office in DLH, issued 2 hrs ago

Key Messages

- Above normal temperatures through Saturday.

- Next chance of rain (20-40%) is Friday afternoon into Saturday.

- Near-normal temperatures return Sunday.

Discussion

Issued at 210 AM CDT Wed Oct 21 2026

Current Conditions/Today:

Low pressure is moving across northern Ontario this morning with a cold front trailing into northern MN. Radar returns show some weak echoes across northern MN but with the dry air in the low levels we don't anticipate much of this activity to make it to the surface, at best expecting a few sprinkles. The frontal boundary will march slowly across the Northland today with winds turning from southerly to northerly with its passage. High pressure will build in behind the boundary with cloud cover largely clearing out by mid day. This will allow ample time for temperatures to recover with another warm day expected as afternoon high temperatures climb into the 60s and low 70s. Overnight, radiational cooling paired with lightly mixed winds and low level moisture could lead to areas of fog developing. HREF and REFS suggest a 30-50% probability of fog occurrence across the Northland.

Tomorrow:

Transient surface high pressure will drift eastward across the region Thursday as an upper-level ridge builds over the northern Plains and Canadian Prairies. Temperatures will remain well above normal as winds turn southerly. Lows Thursday morning will range from the low 30s to around 40 degrees. Look for highs in the low 60s to low 70s, about 10-20 degrees above normal. Temps will be cooler for portions of the North Shore and Arrowhead due to on-shore flow. Those readings will be 5-10 degrees above normal with highs in the middle 50s to low 60s.

Friday through Sunday Night:

Aviation

Issued at 1230 PM CDT Wed Oct 21 2026

The center of high pressure will slide from west to east over the international border through Thursday morning then push farther into the Great Lakes during the day Thursday. Clear skies will prevail today through tomorrow across all TAF sites, with winds diminishing to under 5 kts this afternoon and continuing to drop to near calm this evening through Thursday morning. Clear skies with light winds will promote at least patchy fog development during the early morning hours, with the most susceptible sites being DLH-HIB-HYR while also possible at BRD. Have brought conditions down to 1-3sm at this point, but LIFR conditions cannot be ruled out. Once past sunrise and deeper mixing allows for slightly stronger surface winds and scouring out of the low level moisture, VFR conditions return by late Thursday morning.

Marine

Issued at 210 AM CDT Wed Oct 21 2026

Southwest winds through the day around 5 to 10 knots. A front will pass over the Lake switching winds to out of the northeast tonight. Winds will continue to be on the light side until late Friday when southerly winds ramp up and could lead to hazardous boating conditions for small vessels.

For the open water discussion, refer to the NWS Marquette Area Forecast Discussion at weather.gov/mqt.

Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Conservative index and reflects what the press published. Terms of use.