Dense Fog Advisory
Ends in 1 h 38 min
When
Until 10 AM EDT this morning.
Where
Bay, Midland, and Saginaw Counties.
Issued for this forecast zone · National Weather Service Detroit/Pontiac MI
What, impacts and precautionsHide details
What
Visibility one quarter mile or less in dense fog.
Impacts
Low visibility could make driving conditions hazardous.
Precautionary actions
If driving, slow down, use your headlights, and leave plenty of distance ahead of you.
Areas: Midland; Bay; Saginaw
See it on weather.gov (opens in a new tab)

Observed 7:55 AM EDT at KHYX

Birch Run, MI weather

Foggy and 36°2°, 10°6° warmer than a typical Oct 24.

Forecasts agree

Now 36°2°

Fog

Wind: Calm; Up to 6 mph10 km/h through 8 PM
Visibility (notable): 0.2 mi0.3 km; Dense fog
Dew point: 36°2°; Comfortable · up to 46°8° by 10 AM
Humidity: 100%; Air 36°2°, dew point 36°2° · frost likely
UV index: 0Low; Moderate 1–4 PM · peak 3
Air quality: 58Moderate; Main pollutant: PM2.5 (fine particles)
Pressure: 30.46 inHg1031 hPa; Rising slowly · +0.02 inHg+0.8 hPa in 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

7°4° cooler than this time yesterday (43°6° then, 36°2° now)

Good hours for

Fog until 10 AM
Above 50°10° today by 11 AM
Fog tonight 4–6 AM
Fog tomorrow 7–8 AM
Fog tomorrow night from 3 AM

This morningUp to 54°12° by 11 AM · Partly cloudy
This afternoonUp to 67°19° by 4 PM · Clear
TonightDown to 43°6° by 5 AM · Clear
Tomorrow morningUp to 58°14° by 11 AM · Mostly cloudy
Tomorrow afternoonUp to 70°21° by 3 PM · Mostly cloudy
Tomorrow nightDown to 48°9° by 5 AM · Mostly cloudy

Hourly forecast, next 48 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Sat 8a	Fog	40°4° (likely 37°3° to 41°5°)	40°4°	0%	2 mph3 km/h from SE, gusts 5 mph8 km/h	98%	49%	0
Sat 9a	Fog	42°6° (likely 37°3° to 44°7°)	42°6°	0%	2 mph3 km/h from SE, gusts 5 mph8 km/h	100%	49%	0
Sat 10a	Mostly sunny	48°9° (likely 41°5° to 49°9°)	49°9°	0%	2 mph3 km/h from SSE, gusts 3 mph5 km/h	91%	37%	1
Sat 11a	Mostly sunny	54°12° (likely 46°8° to 55°13°)	54°12°	0%	3 mph5 km/h from SSE, gusts 5 mph7 km/h	80%	19%	1
Sat 12p	Sunny	59°15° (likely 52°11° to 59°15°)	59°15°	0%	3 mph5 km/h from SSE, gusts 6 mph9 km/h	66%	8%	2
Sat 1p	Sunny	63°17° (likely 56°13° to 63°17°)	63°17°	0%	3 mph5 km/h from SSE, gusts 6 mph9 km/h	55%	6%	3
Sat 2p	Sunny	65°18° (likely 60°16° to 65°18°)	65°18°	0%	5 mph8 km/h from SSE, gusts 6 mph10 km/h	49%	6%	3
Sat 3p	Sunny	66°19° (likely 63°17° to 66°19°)	66°19°	0%	5 mph8 km/h from SSE, gusts 6 mph10 km/h	46%	7%	3
Sat 4p	Sunny	67°19° (likely 64°18° to 67°19°)	67°19°	0%	5 mph8 km/h from SSE, gusts 5 mph8 km/h	44%	6%	2
Sat 5p	Mostly sunny	67°19° (likely 64°18° to 67°19°)	67°19°	0%	5 mph8 km/h from SSE, gusts 5 mph7 km/h	44%	43%	1
Sat 6p	Sunny	65°18° (likely 60°16° to 65°18°)	65°18°	0%	3 mph5 km/h from SSE, gusts 6 mph9 km/h	48%	8%	0
Sat 7p	Clear	61°16° (likely 56°13° to 61°16°)	61°16°	0%	5 mph8 km/h from SSE, gusts 5 mph8 km/h	54%	5%	0
Sat 8p	Clear	54°12° (likely 52°11° to 54°12°)	54°12°	0%	6 mph10 km/h from SSE, gusts 5 mph9 km/h	68%	8%	0
Sat 9p	Clear	52°11° (likely 50°10° to 52°11°)	52°11°	0%	6 mph10 km/h from SSE, gusts 9 mph15 km/h	75%	1%	0
Sat 10p	Clear	50°10° (likely 48°9° to 51°11°)	49°9°	0%	5 mph8 km/h from SSE, gusts 11 mph17 km/h	80%	1%	0
Sat 11p	Clear	49°9° (likely 47°8° to 50°10°)	47°8°	0%	6 mph10 km/h from S, gusts 11 mph18 km/h	84%	2%	0
Sun 12a	Clear	48°9° (likely 46°8° to 49°9°)	45°7°	0%	6 mph10 km/h from S, gusts 11 mph18 km/h	87%	4%	0
Sun 1a	Clear	47°8° (likely 46°8° to 48°9°)	45°7°	0%	5 mph8 km/h from S, gusts 11 mph18 km/h	90%	16%	0
Sun 2a	Clear	46°8° (likely 45°7° to 48°9°)	44°7°	0%	5 mph8 km/h from S, gusts 11 mph18 km/h	94%	0%	0
Sun 3a	Clear	45°7° (likely 45°7° to 47°8°)	42°6°	0%	5 mph8 km/h from S, gusts 11 mph17 km/h	97%	14%	0
Sun 4a	Fog	44°7° (likely 44°7° to 46°8°)	42°6°	0%	5 mph8 km/h from S, gusts 11 mph17 km/h	97%	35%	0
Sun 5a	Fog	43°6° (likely 43°6° to 46°8°)	40°4°	0%	5 mph8 km/h from S, gusts 10 mph17 km/h	100%	47%	0
Sun 6a	Cloudy	44°7° (likely 42°6° to 45°7°)	41°5°	0%	5 mph8 km/h from S, gusts 11 mph17 km/h	98%	74%	0
Sun 7a	Fog	44°7° (likely 42°6° to 45°7°)	41°5°	0%	5 mph8 km/h from S, gusts 11 mph17 km/h	97%	67%	0
Sun 8a	Mostly sunny	44°7° (likely 42°6° to 46°8°)	41°5°	0%	5 mph8 km/h from S, gusts 10 mph17 km/h	97%	62%	0
Sun 9a	Cloudy	47°8° (likely 44°7° to 48°9°)	44°7°	0%	6 mph10 km/h from SSW, gusts 10 mph16 km/h	90%	76%	0
Sun 10a	Cloudy	53°12° (likely 50°10° to 53°12°)	53°12°	0%	6 mph10 km/h from S, gusts 10 mph17 km/h	79%	75%	1
Sun 11a	Partly sunny	58°14° (likely 56°13° to 58°14°)	58°14°	0%	7 mph11 km/h from SSW, gusts 13 mph22 km/h	69%	63%	2
Sun 12p	Cloudy	63°17° (likely 60°16° to 64°18°)	63°17°	0%	8 mph13 km/h from SSW, gusts 13 mph21 km/h	60%	72%	3
Sun 1p	Cloudy	67°19° (likely 64°18° to 67°19°)	67°19°	0%	9 mph14 km/h from SSW, gusts 13 mph21 km/h	51%	80%	3
Sun 2p	Cloudy	69°21° (likely 67°19° to 69°21°)	69°21°	0%	9 mph14 km/h from SW, gusts 13 mph20 km/h	47%	83%	3
Sun 3p	Mostly cloudy	70°21° (likely 68°20° to 70°21°)	70°21°	0%	9 mph14 km/h from SW, gusts 13 mph21 km/h	45%	66%	3
Sun 4p	Cloudy	70°21° (likely 67°19° to 71°22°)	71°22°	0%	9 mph14 km/h from SSW, gusts 13 mph21 km/h	44%	93%	2
Sun 5p	Mostly cloudy	70°21° (likely 66°19° to 70°21°)	70°21°	0%	8 mph13 km/h from SSW, gusts 10 mph16 km/h	45%	38%	1
Sun 6p	Mostly cloudy	68°20° (likely 63°17° to 68°20°)	68°20°	0%	7 mph11 km/h from SSW, gusts 10 mph15 km/h	47%	29%	1
Sun 7p	Partly cloudy	64°18° (likely 59°15° to 64°18°)	65°18°	0%	7 mph11 km/h from SSW, gusts 9 mph15 km/h	53%	36%	0
Sun 8p	Mostly cloudy	59°15° (likely 57°14° to 60°16°)	59°15°	0%	6 mph10 km/h from SSW, gusts 10 mph16 km/h	65%	67%	0
Sun 9p	Mostly cloudy	56°13° (likely 55°13° to 58°14°)	56°13°	0%	5 mph8 km/h from SSW, gusts 9 mph15 km/h	71%	60%	0
Sun 10p	Partly cloudy	54°12° (likely 54°12° to 56°13°)	54°12°	0%	3 mph5 km/h from SSW, gusts 10 mph16 km/h	75%	74%	0
Sun 11p	Partly cloudy	54°12° (likely 53°12° to 58°14°)	54°12°	0%	3 mph5 km/h from SSW, gusts 10 mph16 km/h	77%	75%	0
Mon 12a	Partly cloudy	52°11° (likely 52°11° to 57°14°)	52°11°	0%	3 mph5 km/h from SW, gusts 9 mph14 km/h	80%	76%	0
Mon 1a	Cloudy	52°11° (likely 52°11° to 56°13°)	52°11°	0%	2 mph3 km/h from SW, gusts 8 mph13 km/h	83%	82%	0
Mon 2a	Cloudy	51°11° (likely 51°11° to 54°12°)	51°11°	0%	2 mph3 km/h from SW, gusts 10 mph16 km/h	86%	78%	0
Mon 3a	Fog	50°10° (likely 50°10° to 51°11°)	50°10°	0%	2 mph3 km/h from WSW, gusts 5 mph9 km/h	88%	55%	0
Mon 4a	Fog	49°9° (likely 49°9° to 50°10°)	49°9°	0%	2 mph3 km/h from W, gusts 4 mph7 km/h	90%	50%	0
Mon 5a	Fog	48°9° (likely 47°8° to 51°11°)	48°9°	0%	2 mph3 km/h from W, gusts 3 mph5 km/h	91%	39%	0
Mon 6a	Fog	47°8° (likely 46°8° to 52°11°)	47°8°	0%	2 mph3 km/h from WNW, gusts 4 mph6 km/h	93%	55%	0
Mon 7a	Fog	46°8° (likely 45°7° to 53°12°)	47°8°	0%	2 mph3 km/h from NNW, gusts 5 mph8 km/h	93%	67%	0

Days ahead

Shaded: typical range for these dates (1991–2020)

Today, Oct 24. Fog. High 67°19°, low 42°6°. Typical 57°14° / 35°2°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Mostly sunny, 40°4°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 67°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 54°12°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 43°6°
  Dry
Official NWS forecast
Today: Patchy fog before 10am. Sunny, with a high near 67. South southeast wind around 5 mph.
Tonight: Patchy fog after 2am. Partly cloudy, with a low around 42. South southeast wind around 6 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
64°18°–67°19°
Low, likely
37°3°–42°6°
Typical high / low
57°14° / 35°2°
Wind
8 mph12 km/h, gusts 15 mph25 km/h
UV peak
4
Tomorrow, Oct 25. Cloudy. High 71°22°, low 46°8°. Typical 56°13° / 35°2°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 44°7°
  Dry
2. Afternoon
  noon–6 PM
  Mostly cloudy, 70°21°
  Dry
3. Evening
  6 PM–midnight
  Mostly cloudy, 59°15°
  Dry
4. Overnight
  midnight–6 AM
  Fog, 48°9°
  Dry
Official NWS forecast
Day: Patchy fog before 9am. Partly sunny, with a high near 71. South southwest wind 5 to 9 mph.
Night: Patchy fog after 2am. Partly cloudy, with a low around 46. Southwest wind 2 to 7 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
68°20°–71°22°
Low, likely
42°6°–46°8°
Typical high / low
56°13° / 35°2°
Wind
9 mph15 km/h, gusts 17 mph27 km/h
UV peak
3
Monday, Oct 26. Cloudy. High 61°16°, low 39°4°. Typical 56°13° / 35°2°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 48°9°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 60°16°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 51°11°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 45°7°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Patchy fog before 9am. Partly sunny, with a high near 61. North wind 2 to 9 mph.
Night: Mostly cloudy, with a low around 39.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
58°14°–62°17°
Low, likely
39°4°–47°8°
Typical high / low
56°13° / 35°2°
Wind
13 mph20 km/h, gusts 18 mph29 km/h
UV peak
3
Tuesday, Oct 27. Cloudy. High 58°14°, low 41°5°. Typical 55°13° / 34°1°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 45°7°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 59°15°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 51°11°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 49°9°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly cloudy, with a high near 58.
Night: Mostly cloudy, with a low around 41.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
55°13°–64°18°
Low, likely
41°5°–47°8°
Typical high / low
55°13° / 34°1°
Wind
12 mph19 km/h, gusts 21 mph34 km/h
UV peak
3
Wednesday, Oct 28. Cloudy. High 68°20°, low 50°10°. Typical 55°13° / 34°1°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 48°9°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 69°21°
  Dry
3. Evening
  6 PM–midnight
  Clear, 60°15°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 55°13°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 68.
Night: A slight chance of rain after 8pm. Partly cloudy, with a low around 50.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
66°19°–72°22°
Low, likely
44°7°–52°11°
Typical high / low
55°13° / 34°1°
Wind
12 mph19 km/h, gusts 23 mph37 km/h
UV peak
3
Thursday, Oct 29. Rain. High 69°21°, low 43°6°. Typical 54°12° / 34°1°. Rain 0.03 in0.8 mm, 20% chance. Mostly agree.
1. Morning
  6 AM–noon
  Partly sunny, 56°13°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 71°22°
  Dry
3. Evening
  6 PM–midnight
  Clear, 60°16°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 48°9°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of rain before 8am. Mostly sunny, with a high near 69.
Night: Partly cloudy, with a low around 43.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
68°20°–74°23°
Low, likely
43°6°–56°13°
Typical high / low
54°12° / 34°1°
Wind
17 mph28 km/h, gusts 28 mph45 km/h
UV peak
3
Friday, Oct 30. Partly sunny. High 65°18°, low 43°6°. Typical 54°12° / 33°1°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 47°8°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 61°16°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 55°13°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 50°10°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 65.
Night: A slight chance of rain after 8pm. Mostly cloudy, with a low around 43.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
58°14°–72°22°
Low, likely
38°3°–54°12°
Typical high / low
54°12° / 33°1°
Wind
13 mph21 km/h
UV peak
3
Saturday, Oct 31. Cloudy. High 68°20°, low 51°11°. Typical 54°12° / 33°1°. Rain 0.02 in0.5 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 49°10°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 67°20°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 59°15°
  20% chance
4. Overnight
  midnight–6 AM
  Cloudy, 55°13°
  30% chance
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
56°13°–75°24°
Low, likely
37°3°–57°14°
Typical high / low
54°12° / 33°1°
Wind
11 mph18 km/h, gusts 22 mph35 km/h
UV peak
2
Sunday, Nov 1. Drizzle. High 68°20°, low 55°13°. Typical 53°12° / 33°1°. Rain 0.19 in4.8 mm, 50% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Partly sunny, 55°13°
  40% chance
2. Afternoon
  noon–6 PM
  Cloudy, 67°19°
  50% chance · 0.02 in0.5 mm
3. Evening
  6 PM–midnight
  Drizzle, 61°16°
  40% chance · 0.36 in9.2 mm
4. Overnight
  midnight–6 AM
  Drizzle, 59°15°
  40% chance · 0.2 in5.1 mm
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
60°16°–75°24°
Low, likely
44°7°–59°15°
Typical high / low
53°12° / 33°1°
Wind
23 mph37 km/h, gusts 36 mph58 km/h
Monday, Nov 2. Drizzle. High 62°17°, low 54°12°. Typical 53°12° / 32°0°. Rain 0.67 in17 mm, 40% chance. Mostly agree.
1. Morning
  6 AM–noon
  Drizzle, 58°15°
  40% chance · 0.04 in1.1 mm
2. Afternoon
  noon–6 PM
  Drizzle, 62°17°
  30% chance · 0.21 in5.4 mm
3. Evening
  6 PM–midnight
  Drizzle, 57°14°
  30% chance · 0.16 in4 mm
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
58°14°–64°18°
Low, likely
51°11°–57°14°
Typical high / low
53°12° / 32°0°
Wind
20 mph32 km/h, gusts 38 mph61 km/h

10 days15 days30 days

The outlook

Today
Dry, high 67°, low 42°.
Tomorrow
Dry, high 71°, low 46°, warming up.
Monday
Dry, high 61°, low 39°, cooling off.
Rest of week
Highs 58–69°; chance of precipitation on Sunday, Monday.

Want the meteorologists’ reasoning? Read the NWS forecast discussion (DTX) (opens in a new tab)

What changed since yesterday

No meaningful changes from yesterday’s forecast.

Radar

Radar data: NOAA MRMS, rendered by forecast.blue

Radar loads when scrolled into view

Full-screen radar

Rivers

NOAA river gauges within 25 mi

Cass River at Frankenmuth

5.8 mi

Below flood stage

Level: 3.5 ft
Flow: 64 cfs

Reading from Sat 6:45 AM · NWS gauge page

Flint River at Fosters

9.1 mi

Level: 4.5 ft
Flow: 124 cfs

Reading from Sat 7:30 AM · NWS gauge page

Saginaw River at Saginaw

14 mi

Below flood stage

Level: 12.9 ft
Flow: 1,060 cfs

Reading from Sat 5 AM · NWS gauge page

Flint River at Flint

15 mi

Below flood stage

Level: 3.2 ft
Flow: 138 cfs

Reading from Sat 7 AM · NWS gauge page

For your home

What this week’s weather means for heating, cooling, pipes and fresh air.

Heating this week

About 85% less heating than a typical week.

This week 21Typical 142

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 12
h below 17°F: 0
h below 5°F: 0

47, 17 and 5°F are the test points heat pumps are rated at. About 1 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 36°F).

Open the windows?

Today, 1:00 PM–7:00 PM

Good stretch to open the windows.

Is this typical?

Vassar · official normals 1991–2020 · records 1968–2026

Oct 24, today vs a typical year

Today’s expected high is 10°6° warmer than typical.

Last 7 days vs normal

—SunOct 18
—MonOct 19
—TueOct 20
—WedOct 21
—ThuOct 22
—FriOct 23
—SatOct 24

Birch Run weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 10 h 38 min; Losing 2 min 44 s a day; shortest Dec 21, 1 h 39 min less
Golden hour: 5:58–6:55 PM; Morning 7:42–8:39 AM
Blue hour: 6:55–7:07 PM; Morning 7:30–7:42 AM; first light 7:30 AM

Stars tonight? Fair

Mostly clear 7:07 PM–4 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

96% lit · growing

Today: sets 6:11 AM · rises 5:36 PM
Full moon: Oct 26
New moon: Nov 9

Looking west from Birch Run. A level horizon.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.

1 active weather alert

Dense Fog Advisory

Birch Run, MI weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Cass River at Frankenmuth

Flint River at Fosters

Saginaw River at Saginaw

Flint River at Flint

For your home

Heating this week

Heat-pump hours, next 7 days

Comfort

Open the windows?

Is this typical?

Oct 24, today vs a typical year

Last 7 days vs normal

Sun & moon

Sun

Stars tonight? Fair

Moon