Dense Fog Advisory
Ends in 1 h 53 min
When
Until 10 AM EDT this morning.
Where
Portions of central, south central, and southwest Michigan.
Issued for this forecast zone · National Weather Service Grand Rapids 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: Osceola; Clare; Mecosta; Isabella; Montcalm; Gratiot; Kent; Ionia; Clinton; Barry; Eaton; Ingham; Kalamazoo; Calhoun; Jackson
See it on weather.gov (opens in a new tab)

Observed 7:45 AM EDT at KMBS

Riverdale, MI weather

Foggy and 37°3°, 11°6° warmer than a typical Oct 24.

Forecasts agree

Now 37°3°

Fog · Feels like 34°1°

Wind: 5 mph7 km/h; From the east-northeast. 35–7 mph11 km/h through 8 PM
Visibility (notable): 0.2 mi0.3 km; Dense fog
Dew point: 37°3°; Comfortable · up to 48°9° by 10 AM
Humidity: 100%; Air 37°3°, dew point 37°3° · fog or dew likely
UV index: 0Low; Moderate 1–3 PM · peak 3
Air quality: 60Moderate; Main pollutant: PM2.5 (fine particles)
Pressure: 30.47 inHg1032 hPa; Rising slowly · +0.02 inHg+0.7 hPa in 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

Good hours for

Fog until noon
Above 50°10° today by 11 AM
High 67°19° today at 4 PM
Below 60°16° tonight after 8 PM

This morningUp to 53°12° by 11 AM · Mostly cloudy
This afternoonUp to 67°19° by 4 PM · Partly cloudy
TonightDown to 46°8° by 4 AM · Partly cloudy
Tomorrow morningUp to 58°14° by 11 AM · Cloudy
Tomorrow afternoonUp to 71°22° by 4 PM · Mostly cloudy
Tomorrow nightDown to 49°9° by 3 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	42°6° (likely 42°6° to 44°7°)	42°6°	0%	2 mph3 km/h from S, gusts 6 mph9 km/h	100%	74%	0
Sat 9a	Fog	43°6° (likely 43°6° to 46°8°)	41°5°	0%	3 mph5 km/h from SSE, gusts 6 mph10 km/h	100%	77%	0
Sat 10a	Fog	48°9° (likely 46°8° to 49°9°)	47°8°	0%	3 mph5 km/h from S, gusts 9 mph14 km/h	100%	75%	1
Sat 11a	Fog	53°12° (likely 49°9° to 54°12°)	53°12°	0%	5 mph8 km/h from S, gusts 8 mph14 km/h	89%	63%	1
Sat 12p	Partly sunny	58°14° (likely 53°12° to 58°14°)	58°14°	0%	5 mph8 km/h from SSE, gusts 9 mph14 km/h	75%	53%	2
Sat 1p	Partly sunny	62°17° (likely 58°14° to 63°17°)	62°17°	0%	6 mph10 km/h from SSE, gusts 9 mph15 km/h	62%	34%	3
Sat 2p	Partly sunny	65°18° (likely 61°16° to 65°18°)	65°18°	0%	7 mph11 km/h from S, gusts 10 mph16 km/h	54%	23%	3
Sat 3p	Partly sunny	66°19° (likely 63°17° to 66°19°)	66°19°	0%	7 mph11 km/h from SSE, gusts 10 mph16 km/h	52%	33%	2
Sat 4p	Partly sunny	67°19° (likely 64°18° to 67°19°)	67°19°	0%	6 mph10 km/h from S, gusts 9 mph15 km/h	49%	49%	2
Sat 5p	Partly sunny	67°19° (likely 64°18° to 67°19°)	67°19°	0%	6 mph10 km/h from SSE, gusts 9 mph15 km/h	47%	61%	1
Sat 6p	Mostly sunny	65°18° (likely 61°16° to 65°18°)	65°18°	0%	5 mph8 km/h from SSE, gusts 9 mph14 km/h	50%	57%	0
Sat 7p	Mostly cloudy	61°16° (likely 55°13° to 61°16°)	61°16°	0%	5 mph8 km/h from SSE, gusts 7 mph12 km/h	56%	32%	0
Sat 8p	Clear	57°14° (likely 52°11° to 57°14°)	57°14°	0%	3 mph5 km/h from SSE, gusts 8 mph12 km/h	64%	11%	0
Sat 9p	Clear	53°12° (likely 50°10° to 53°12°)	53°12°	0%	3 mph5 km/h from SSE, gusts 9 mph15 km/h	74%	4%	0
Sat 10p	Clear	51°11° (likely 48°9° to 51°11°)	51°11°	0%	2 mph3 km/h from S, gusts 11 mph18 km/h	80%	10%	0
Sat 11p	Clear	50°10° (likely 45°7° to 51°11°)	49°9°	0%	3 mph5 km/h from S, gusts 11 mph17 km/h	80%	17%	0
Sun 12a	Clear	49°9° (likely 45°7° to 50°10°)	48°9°	0%	3 mph5 km/h from S, gusts 10 mph16 km/h	83%	7%	0
Sun 1a	Clear	48°9° (likely 44°7° to 49°9°)	47°8°	0%	3 mph5 km/h from S, gusts 10 mph15 km/h	86%	9%	0
Sun 2a	Clear	47°8° (likely 43°6° to 49°9°)	45°7°	0%	5 mph8 km/h from S, gusts 10 mph17 km/h	89%	10%	0
Sun 3a	Mostly cloudy	47°8° (likely 43°6° to 48°9°)	45°7°	0%	5 mph8 km/h from S, gusts 11 mph18 km/h	89%	32%	0
Sun 4a	Partly cloudy	46°8° (likely 44°7° to 47°8°)	44°7°	0%	5 mph8 km/h from SSW, gusts 11 mph18 km/h	93%	72%	0
Sun 5a	Cloudy	46°8° (likely 44°7° to 46°8°)	44°7°	0%	5 mph8 km/h from SSW, gusts 10 mph17 km/h	89%	81%	0
Sun 6a	Cloudy	45°7° (likely 43°6° to 46°8°)	43°6°	0%	5 mph8 km/h from SSW, gusts 9 mph15 km/h	93%	81%	0
Sun 7a	Cloudy	44°7° (likely 43°6° to 45°7°)	41°5°	0%	5 mph8 km/h from SSW, gusts 10 mph16 km/h	96%	82%	0
Sun 8a	Cloudy	45°7° (likely 43°6° to 46°8°)	43°6°	0%	5 mph8 km/h from SSW, gusts 9 mph15 km/h	93%	90%	0
Sun 9a	Cloudy	47°8° (likely 46°8° to 48°9°)	44°7°	0%	6 mph10 km/h from SSW, gusts 10 mph16 km/h	93%	92%	0
Sun 10a	Cloudy	53°12° (likely 51°11° to 53°12°)	53°12°	0%	6 mph10 km/h from SSW, gusts 12 mph19 km/h	83%	91%	1
Sun 11a	Cloudy	58°14° (likely 56°13° to 58°14°)	58°14°	0%	7 mph11 km/h from SSW, gusts 15 mph23 km/h	72%	80%	2
Sun 12p	Cloudy	62°17° (likely 60°16° to 63°17°)	62°17°	0%	8 mph13 km/h from SSW, gusts 16 mph26 km/h	62%	79%	2
Sun 1p	Cloudy	67°19° (likely 63°17° to 67°19°)	67°19°	0%	9 mph14 km/h from SSW, gusts 16 mph26 km/h	50%	80%	3
Sun 2p	Cloudy	69°21° (likely 66°19° to 69°21°)	69°21°	0%	9 mph14 km/h from SW, gusts 14 mph23 km/h	47%	68%	3
Sun 3p	Mostly cloudy	69°21° (likely 67°19° to 70°21°)	69°21°	0%	9 mph14 km/h from SW, gusts 14 mph22 km/h	47%	42%	3
Sun 4p	Partly sunny	71°22° (likely 68°20° to 71°22°)	71°22°	0%	9 mph14 km/h from SW, gusts 14 mph22 km/h	44%	65%	2
Sun 5p	Partly sunny	70°21° (likely 67°19° to 70°21°)	70°21°	0%	8 mph13 km/h from SW, gusts 14 mph22 km/h	44%	29%	1
Sun 6p	Partly sunny	68°20° (likely 64°18° to 68°20°)	68°20°	0%	7 mph11 km/h from SW, gusts 11 mph18 km/h	47%	33%	1
Sun 7p	Partly cloudy	64°18° (likely 60°16° to 64°18°)	64°18°	0%	6 mph10 km/h from SW, gusts 9 mph15 km/h	56%	41%	0
Sun 8p	Cloudy	58°14° (likely 56°13° to 59°15°)	58°14°	0%	5 mph8 km/h from SW, gusts 9 mph14 km/h	69%	77%	0
Sun 9p	Cloudy	56°13° (likely 54°12° to 57°14°)	56°13°	0%	3 mph5 km/h from SW, gusts 10 mph16 km/h	74%	79%	0
Sun 10p	Partly cloudy	54°12° (likely 53°12° to 57°14°)	54°12°	0%	3 mph5 km/h from WSW, gusts 9 mph15 km/h	80%	76%	0
Sun 11p	Cloudy	53°12° (likely 51°11° to 57°14°)	53°12°	0%	3 mph5 km/h from WSW, gusts 9 mph14 km/h	80%	78%	0
Mon 12a	Partly cloudy	52°11° (likely 50°10° to 57°14°)	52°11°	0%	3 mph5 km/h from WSW, gusts 8 mph14 km/h	83%	70%	0
Mon 1a	Cloudy	51°11° (likely 50°10° to 56°13°)	51°11°	0%	2 mph3 km/h from W, gusts 10 mph15 km/h	86%	70%	0
Mon 2a	Cloudy	50°10° (likely 50°10° to 55°13°)	50°10°	0%	2 mph3 km/h from W, gusts 10 mph15 km/h	89%	63%	0
Mon 3a	Mostly clear	49°9° (likely 49°9° to 53°12°)	49°9°	0%	2 mph3 km/h from WNW, gusts 5 mph8 km/h	93%	47%	0
Mon 4a	Mostly cloudy	49°9° (likely 48°9° to 54°12°)	49°9°	0%	2 mph3 km/h from NW, gusts 5 mph8 km/h	89%	50%	0
Mon 5a	Mostly cloudy	49°9° (likely 46°8° to 55°13°)	49°9°	0%	2 mph3 km/h from NNW, gusts 6 mph10 km/h	89%	67%	0
Mon 6a	Mostly cloudy	48°9° (likely 46°8° to 55°13°)	48°9°	0%	2 mph3 km/h from NNW, gusts 7 mph12 km/h	93%	70%	0
Mon 7a	Mostly cloudy	47°8° (likely 46°8° to 54°12°)	47°8°	0%	2 mph3 km/h from N, gusts 9 mph14 km/h	93%	66%	0

Days ahead

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

Today, Oct 24. Fog. High 67°19°, low 44°7°. Typical 56°13° / 37°3°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Fog, 42°6°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 67°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 57°14°
  Dry
4. Overnight
  midnight–6 AM
  Mostly cloudy, 46°8°
  Dry
Official NWS forecast
Today: Areas of fog before 11am. Mostly sunny, with a high near 67. South southeast wind 2 to 7 mph.
Tonight: Partly cloudy. Low around 44, with temperatures rising to around 46 overnight. South wind around 5 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
64°18°–67°19°
Low, likely
37°3°–44°7°
Typical high / low
56°13° / 37°3°
Wind
7 mph11 km/h, gusts 17 mph28 km/h
UV peak
4
Tomorrow, Oct 25. Cloudy. High 71°22°, low 47°8°. Typical 56°13° / 37°3°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 45°7°
  Dry
2. Afternoon
  noon–6 PM
  Mostly cloudy, 71°22°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 58°14°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 49°9°
  Dry
Official NWS forecast
Day: Partly sunny, with a high near 71. South southwest wind 5 to 9 mph, with gusts as high as 18 mph.
Night: Partly cloudy, with a low around 47. West wind 2 to 7 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
68°20°–71°22°
Low, likely
43°6°–47°8°
Typical high / low
56°13° / 37°3°
Wind
9 mph15 km/h, gusts 18 mph29 km/h
UV peak
3
Monday, Oct 26. Mostly cloudy. High 61°16°, low 39°4°. Typical 55°13° / 36°2°. Dry. Mostly agree. Best day outdoors this week.
1. Morning
  6 AM–noon
  Cloudy, 48°9°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 60°16°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 53°12°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 43°6°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 61. North northeast wind 2 to 7 mph.
Night: Mostly cloudy, with a low around 39.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Best day outdoors this week: the one dry, mild day the forecasts agree on (high 61°16°).
High, likely
58°14°–62°17°
Low, likely
39°4°–48°9°
Typical high / low
55°13° / 36°2°
Wind
11 mph18 km/h, gusts 18 mph29 km/h
UV peak
3
Tuesday, Oct 27. Cloudy. High 57°14°, low 42°6°. Typical 55°13° / 36°2°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 42°6°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 59°15°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 52°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 57.
Night: Mostly cloudy, with a low around 42.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
55°13°–63°17°
Low, likely
38°3°–46°8°
Typical high / low
55°13° / 36°2°
Wind
12 mph19 km/h, gusts 22 mph35 km/h
UV peak
3
Wednesday, Oct 28. Cloudy. High 69°21°, low 50°10°. Typical 54°12° / 36°2°. Dry. Mostly agree.
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, 56°13°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 69.
Night: A slight chance of rain showers after 8pm. Partly cloudy, with a low around 50.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
67°19°–71°22°
Low, likely
43°6°–52°11°
Typical high / low
54°12° / 36°2°
Wind
13 mph20 km/h, gusts 24 mph38 km/h
UV peak
3
Thursday, Oct 29. Partly sunny. High 67°19°, low 43°6°. Typical 54°12° / 35°2°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 55°13°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 67°20°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 58°14°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 46°8°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of rain showers before 8am. Mostly sunny, with a high near 67.
Night: A slight chance of rain showers after 2am. Partly cloudy, with a low around 43.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
65°18°–71°22°
Low, likely
43°6°–54°12°
Typical high / low
54°12° / 35°2°
Wind
18 mph28 km/h, gusts 30 mph47 km/h
UV peak
3
Friday, Oct 30. Partly sunny. High 65°18°, low 43°6°. Typical 54°12° / 35°2°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 45°7°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 62°17°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 54°12°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 48°9°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of rain showers before 8am. Mostly sunny, with a high near 65.
Night: A slight chance of rain showers after 2am. Mostly cloudy, with a low around 43.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
56°13°–72°22°
Low, likely
37°3°–53°12°
Typical high / low
54°12° / 35°2°
Wind
11 mph18 km/h, gusts 22 mph35 km/h
UV peak
3
Saturday, Oct 31. Cloudy. High 67°19°, low 49°9°. Typical 53°12° / 35°2°. Rain 0.03 in0.8 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 48°9°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 66°19°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 59°15°
  30% chance
4. Overnight
  midnight–6 AM
  Drizzle, 55°13°
  40% 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
57°14°–73°23°
Low, likely
38°3°–54°12°
Typical high / low
53°12° / 35°2°
Wind
13 mph20 km/h, gusts 21 mph34 km/h
UV peak
2
Sunday, Nov 1. Rain. High 66°19°, low 55°13°. Typical 53°12° / 34°1°. Rain 0.36 in9.1 mm, 50% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Drizzle, 55°13°
  50% chance · 0.04 in1 mm
2. Afternoon
  noon–6 PM
  Cloudy, 65°18°
  40% chance · 0.04 in1.1 mm
3. Evening
  6 PM–midnight
  Rain, 60°16°
  40% chance · 0.4 in10 mm
4. Overnight
  midnight–6 AM
  Rain, 57°14°
  40% chance · 0.2 in5 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
56°13°–73°23°
Low, likely
47°8°–62°17°
Typical high / low
53°12° / 34°1°
Wind
21 mph34 km/h, gusts 34 mph54 km/h
Monday, Nov 2. Rain. High 61°16°, low 52°11°. Typical 52°11° / 34°1°. Rain 0.52 in13 mm, 40% chance. Mostly agree.
1. Morning
  6 AM–noon
  Drizzle, 58°14°
  40% chance · 0.03 in0.8 mm
2. Afternoon
  noon–6 PM
  Drizzle, 61°16°
  30% chance · 0.1 in2.5 mm
3. Evening
  6 PM–midnight
  Drizzle, 54°12°
  20% chance · 0.12 in3.1 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.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
57°14°–64°18°
Low, likely
45°7°–58°14°
Typical high / low
52°11° / 34°1°
Wind
20 mph33 km/h, gusts 37 mph59 km/h

10 days15 days30 days

The outlook

Today
Dry, high 67°, low 44°.
Tomorrow
Dry, high 71°, low 47°, warming up.
Monday
Dry, high 61°, low 39°, cooling off.
Rest of week
Highs 57–69°; chance of precipitation on Sunday, Monday.

Want the meteorologists’ reasoning? Read the NWS forecast discussion (GRR) (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

Fish Creek near Crystal

12 mi

Below flood stage

Level: 2.3 ft

Reading from Sat 6 AM · NWS gauge page

Chippewa River below Mt. Pleasant

18 mi

Below flood stage

Level: 3.5 ft
Flow: 232 cfs

Reading from Sat 6:15 AM · NWS gauge page

Maple River at Maple Rapids

20 mi

Below flood stage

Level: 2.7 ft
Flow: 35 cfs

Reading from Sat 6:15 AM · NWS gauge page

Chippewa River near Drew

22 mi

Level: 4.8 ft
Flow: 58 cfs

Reading from Sat 5:30 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 20Typical 137

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 10
h below 17°F: 0
h below 5°F: 0

47, 17 and 5°F are the test points heat pumps are rated at.

Comfort

Dry air outside (dew point 37°F).

Open the windows?

Today, 1:00 PM–7:00 PM

Good stretch to open the windows.

Is this typical?

Alma · official normals 1991–2020 · records 1887–2026

Oct 24, today vs a typical year

Today’s expected high is 11°6° warmer than typical.

Last 7 days vs normal

On average 3°2° warmer than normal (daily mean temperature).

−6°−4°SunOct 18
+2°+1°MonOct 19
+6°+3°TueOct 20
+4°+2°WedOct 21
+6°+3°ThuOct 22
+9°+5°FriOct 23
—SatOct 24

Riverdale weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 10 h 37 min; Losing 2 min 44 s a day; shortest Dec 21, 1 h 40 min less
Golden hour: 6:02–6:59 PM; Morning 7:46–8:44 AM
Blue hour: 6:59–7:11 PM; Morning 7:35–7:46 AM; first light 7:35 AM

Stars tonight? Fair

Mostly clear 8 PM–3 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

96% lit · growing

Today: sets 6:15 AM · rises 5:40 PM
Full moon: Oct 26
New moon: Nov 9

Looking west from Riverdale. 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

Riverdale, MI weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Fish Creek near Crystal

Chippewa River below Mt. Pleasant

Maple River at Maple Rapids

Chippewa River near Drew

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