Port Huron, MI Weather

Saint Clair County7:43 AM EDT42.97°N, 82.42°WElevation 604 ft
Special Weather Statement until 8:15 AM Tue

Current conditions

Clear
36°
Clear
Feels like 36°
High 66°·Low 40°
WindWSW 1 mph
Humidity93%
Dew point34°
Pressure30.40 inHg
Visibility9.0 mi
Cloud cover51%
UV index0 Low
Sunrise7:50 AM
Sunset6:41 PM

Observed at St Clair County International Airport · 1 hr ago

Forecast

10-day

  • Today

    Sunny, with a high near 66. East northeast wind around 6 mph.

  • Tonight

    Mostly clear, with a low around 40. East wind around 6 mph.

  • Wednesday

    Sunny, with a high near 64. Southeast wind around 3 mph.

National Weather Service forecast updated 3 hrs ago.

Hourly

Hourly forecast
  1. Now Partly Sunny 46°
  2. 8 AM Partly Sunny 46°
  3. 9 AM Partly Sunny 49°
  4. 10 AM Mostly Sunny 53°
  5. 11 AM Sunny 57°
  6. 12 PM Sunny 60°
  7. 1 PM Sunny 62°
  8. 2 PM Sunny 64°
  9. 3 PM Sunny 66°
  10. 4 PM Sunny 66°
  11. 5 PM Sunny 66°
  12. 6 PM Mostly Clear 63°
  13. 7 PM Mostly Clear 59°
  14. 8 PM Mostly Clear 56°
  15. 9 PM Mostly Clear 55°
  16. 10 PM Mostly Clear 53°
  17. 11 PM Mostly Clear 51°
  18. Wed12 AM Mostly Clear 49°
  19. 1 AM Mostly Clear 46°
  20. 2 AM Mostly Clear 44°
  21. 3 AM Mostly Clear 43°
  22. 4 AM Mostly Clear 42°
  23. 5 AM Mostly Clear 40°
  24. 6 AM Sunny 40°

Daily forecast

Details
  1. TodayOct 20 Sunny Sunny40°66°
  2. WedOct 21 Sunny Sunny45°64°
  3. ThuOct 22 Sunny Sunny41°66°
  4. FriOct 23 Sunny Sunny40°59°
  5. SatOct 24 Sunny Sunny45°62°
  6. SunOct 25 Mostly Sunny Mostly Sunny48°66°
  7. MonOct 26 Mostly Sunny Mostly Sunny13%45°63°
  8. TueOct 27 Light rain Light rain0.09 in45°53°
  9. WedOct 28 Cloudy Cloudy39°48°

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 in Michigan

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Sun & moon

Sunrise 7:50 AM
Sunset 6:41 PM
Daylight 10 h 50 min (−2 min 47 s tomorrow)
Waxing Gibbous · 68% lit
Moonrise 4:03 PM Moonset 1:38 AM
Full moon Oct 26 New moon Nov 9

Almanac

Monthly
Normal high / low59° / 45°
Record high77° (1953)
Record low24° (1974)
Wettest1.24 in (2016)
Month to date1.85 in (normal 1.94 in)

Port Huron, records since 1931. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).

Nearby

Forecasters' discussion

From the National Weather Service office in DTX, issued 3 hrs ago

Key Messages

- Dry weather with mild afternoon highs and cool morning lows will persist into the weekend.

Dtw Threshold Probabilities

* None.

Prev Discussion

Issued at 300 AM EDT Tue Oct 20 2026

DISCUSSION...

An elongated sfc to mid level ridge axis extending across the Great Lakes region today through Wednesday will maintain the persistent dry pattern across the forecast area. A northern stream short wave forecast to track across northern Ontario Wednesday will drive a weakening sfc cold front into the Great Lakes region Wed night. This frontal boundary will essentially wash out as long wave ridge amplification takes hold across the central US Thurs into Friday, resulting in rebounding mid level heights across Lower Mi. This will strengthen the large low-mid level anticyclone across much of the eastern US, the influence of which will affect Se Mi through Saturday sustaining dry conditions with relatively little cloud cover.

The dry ambient airmass will continue to support relatively cool nights with ample afternoon sunshine today through Saturday. Forecast mixing depths and thermal profiles remain supportive of afternoon highs from the mid 60s to lower 70s today through Thursday. Sfc high pressure is forecast to strengthen to 1035mb across Quebec by Friday. This may drive a slightly cooler airmass across the eastern Great Lakes, warranting a little lower forecast highs on Friday. With the center of the sfc high pressure already centered across NE Ontario and Quebec, light easterly winds off the lakes will contribute to some enhanced fog potential. There are some indications in the hi res suite for some degree of fog expansion across the thumb this morning. A more notable moisture push tonight into Wed morning may allow a more expansive advective fog event off Lake Erie, with the stronger easterly flow possibly supporting the better fog chances farther west toward Adrian and Ann Arbor.

There is indication in Ecwmf and GFS ensemble members that a forecast deeper upper wave tracking across central Canada Sunday into early next week will break down the ridging across the Great Lakes, suggesting a possible pattern change for next week.

MARINE...

Dtx Watches

MI...None. Lake Huron...None. Lake St Clair...None. Michigan waters of Lake Erie...None.

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 4Search index and reflects what the press published. Terms of use.