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St. Clair, MI Weather

Today: Sunny, high 70°F, low 50°F. Hourly and 10-day forecast from the National Weather Service. Times are local (EDT).

St. Clair, MI current weather

64°F

Sunny

Forecast for this hour. No recent report from a nearby station.

H 70° / L 50°

  • No rain expected in the next 12 hours

No recent station report. NWS hourly forecast updated 10/28/2026, 1:24 AM PT

Hourly forecast

NWS, updated 10/28/2026, 1:24 AM PT

  1. Now64°
  2. 1 PM67°
  3. 2 PM68°
  4. 3 PM69°
  5. 4 PM70°
  6. 5 PM69°
  7. 6 PM67°
  8. 7 PM64°
  9. 8 PM58°
  10. 9 PM56°
  11. 10 PM54°
  12. 11 PM52°
  13. 12 AM52°Thu
  14. 1 AM52°
  15. 2 AM51°
  16. 3 AM51°
  17. 4 AM51°
  18. 5 AM51°
  19. 6 AM51°
  20. 7 AM52°
  21. 8 AM52°
  22. 9 AM55°
  23. 10 AM59°
  24. 11 AM64°
  25. 12 PM67°
  26. 1 PM69°
  27. 2 PM72°48%
  28. 3 PM71°32%
  29. 4 PM71°23%
  30. 5 PM70°22%
  31. 6 PM68°13%
  32. 7 PM66°
  33. 8 PM62°
  34. 9 PM60°
  35. 10 PM58°
  36. 11 PM56°
  37. 12 AM53°Fri
  38. 1 AM51°
  39. 2 AM48°
  40. 3 AM46°
  41. 4 AM44°
  42. 5 AM42°
  43. 6 AM40°
  44. 7 AM39°
  45. 8 AM39°
  46. 9 AM43°
  47. 10 AM47°
  48. 11 AM52°

10-day forecast

Tap a day for details

  • Today10/28Low 50°High 70°

    This Afternoon: Sunny, with a high near 70. South southwest wind around 5 mph.

    Tonight: Mostly clear, with a low around 50. South wind around 6 mph.

    Sunny
  • Thu10/2948% chance of precipitationLow 39°High 72°

    Thursday: A chance of rain after 2pm. Mostly sunny. High near 72, with temperatures falling to around 70 in the afternoon. Southwest wind 7 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.

    Thursday Night: Partly cloudy, with a low around 39. West northwest wind 5 to 10 mph, with gusts as high as 20 mph. New rainfall amounts less than a tenth of an inch possible.

    Mostly Sunny then Chance Light Rain
  • Fri10/30Low 38°High 61°

    Friday: Sunny, with a high near 61. Northwest wind around 6 mph.

    Friday Night: Partly cloudy, with a low around 38.

    Sunny
  • Sat10/31Low 43°High 62°

    Saturday: Partly sunny, with a high near 62.

    Saturday Night: Mostly cloudy, with a low around 43.

    Partly Sunny
  • Sun11/120% chance of precipitationLow 46°High 65°

    Sunday: Mostly cloudy, with a high near 65.

    Sunday Night: A slight chance of rain after 7pm. Mostly cloudy, with a low around 46.

    Mostly Cloudy
  • Mon11/243% chance of precipitationLow 47°High 65°

    Monday: A slight chance of rain. Mostly cloudy, with a high near 65.

    Monday Night: A chance of rain. Mostly cloudy, with a low around 47.

    Slight Chance Light Rain
  • Tue11/349% chance of precipitationLow 46°High 63°

    Tuesday: A chance of rain. Mostly cloudy, with a high near 63.

    Tuesday Night: A chance of rain. Mostly cloudy, with a low around 46.

    Chance Light Rain
  • Wed11/4Model blend41% chance of precipitationLow 44°High 59°

    Wednesday: Chance of rain. High near 59°. Low that night near 44°.

    Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.

  • Thu11/5Model blend41% chance of precipitationLow 40°High 57°

    Thursday: Chance of rain. High near 57°. Low that night near 40°. About 0.07 in of precipitation.

    Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.

  • Fri11/6Model blend22% chance of precipitationLow High 55°

    Friday: Mostly cloudy, slight chance of rain. High near 55°. About 0.03 in of precipitation.

    Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.

Forecast for 42.832, -82.492 from the NWS DTX office, updated 10/28/2026, 1:24 AM PT · Official forecast on weather.gov

Days 8 to 10: NOAA National Blend of Models, station CYZR (Sarnia/Hadfield Arpt, 15 mi), model run 10/27/2026, 7:00 PM EDT

From the National Weather Service; may be delayed. Not for life-safety decisions. In an emergency, call 911.

Next 6 hours

NWS hourly forecast

  1. Now64°Sunny1%5 mph
  2. 1 PM67°Sunny2%5 mph
  3. 2 PM68°Sunny2%5 mph
  4. 3 PM69°Sunny1%5 mph
  5. 4 PM70°Sunny1%5 mph
  6. 5 PM69°Sunny1%5 mph

Hourly details

Next 7 days: temperature chart, feels like, rain and snow amounts, sky cover, wind and gustsShow

Radar and satellite

National radar

NEXRAD (last 50 min) and GOES

Latest

Frequently asked questions

What is the high temperature today in St. Clair, MI?
The National Weather Service forecast for this afternoon calls for a high near 70°F. Sunny.
Will it rain in St. Clair, MI in the next 24 hours?
The NWS hourly forecast does not show any hour with a 50% or higher chance of precipitation in the next 24 hours.
What is the 10-day forecast for St. Clair, MI?
The first 7 days come from the National Weather Service forecast. Days 8 to 10 (Nov 4 to Nov 6) come from the NOAA National Blend of Models, with highs of 55°F to 59°F and up to a 41% chance of precipitation. Model guidance this far out often changes.
What time is sunrise and sunset in St. Clair, MI today?
Sunrise is about 7:59 AM EDT and sunset is about 6:27 PM EDT (calculated for the center of the area, within a few minutes).
What is the normal October weather in St. Clair, MI?
At Port Huron, the 1991 to 2020 normal high in October is 61°F and the normal low is 46°F.

Nearby hazards

Michigan hazards

Severe storm and flash flood outlooks, expected rain, river flooding and wildfires near this area

  • Severe storm outlook today:No thunderstorm risk area over this locationOutlook map
  • Excessive rainfall outlook (flash flood risk):Could not check the Weather Prediction Center outlook right now.
  • River gauges within 40 miles at or above flood stage: None reported
  • Active wildfires within 50 miles: None reported

UV and air quality forecast

EPA and AirNow

AQI forecast today (Southeast)
ModeratePM2.5
AQI forecast tomorrow (Southeast)
ModeratePM2.5

UV index guide · Air quality

Drought

By county

St. Clair County, week of 10/20/2026

100% of the county is abnormally dry. No drought.

Beaches nearby

EPA BEACON beaches

Sun and moon

Local time, center of the area

Sunrise
7:59 AM
Sunset
6:27 PM
Daylight
10 hr 28 min
Moon
Waning Gibbous 93% lit
First light (civil dawn)
7:30 AM
Last light (civil dusk)
6:57 PM
Moonrise
7:46 PM
Moonset
11:09 AM

Normal October weather

Climate

Normal October high 61°, low 46°, precipitation 3.13 in for the month. 1991 to 2020 normals at Port Huron, 11 mi away.

Other places nearby

Data sources

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About this data

Weather and emergencies: Weather, air quality and hazard information on this page is delayed and may be incomplete. It is not a substitute for official warnings. Always follow the National Weather Service, local emergency management and public safety officials. In an emergency, call 911. For evacuation orders, use your local official alert system.

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