Dense Fog Advisory
Ends in 3 h 35 min
When
Until 10 AM EDT this morning.
Where
Portions of northern Indiana, southwest Michigan, and northwest Ohio.
Issued for this forecast zone · National Weather Service Northern Indiana
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: Elkhart; Lagrange; Steuben; Noble; De Kalb; Whitley; Allen; Wabash; Huntington; Wells; Adams; Northern Kosciusko; Southern Kosciusko; St. Joseph; Branch; Hillsdale; Williams; Fulton; Defiance; Henry; Paulding; Putnam; Van Wert; Allen
See it on weather.gov (opens in a new tab)

Observed 5:55 AM EDT at KHAI

Mendon, MI weather

Foggy and 50°10°, 10°6° warmer than a typical Oct 24.

Mostly agree

Now 50°10°

Fog

Wind: 3 mph5 km/h; From the east-southeast. 35–5 mph8 km/h through 6 PM
Visibility: 0.8 mi1.3 km; Fog · under 1 mi1.6 km
Dew point: 46°8°; Comfortable
UV index: 0Low; Moderate 1–4 PM · peak 3
Air quality: 75Moderate; Main pollutant: PM2.5 (fine particles)
Pressure: 30.42 inHg1030 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

7°4° warmer than this time yesterday (43°6° then, 50°10° now)

Good hours for

Fog until 11 AM
Low 43°6° today at 8 AM
Above 60°16° today by 1 PM
High 68°20° today at 4 PM
Below 60°16° tonight after 8 PM

This morningUp to 54°12° by 11 AM · Mostly cloudy
This afternoonUp to 68°20° by 4 PM · Mostly cloudy
TonightDown to 45°7° by 5 AM · Partly cloudy
Tomorrow morningUp to 58°14° by 11 AM · Mostly cloudy
Tomorrow afternoonUp to 71°22° by 5 PM · Mostly cloudy
Tomorrow nightDown to 48°9° by 4 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 6a	Fog	47°8° (likely 45°7° to 47°8°)	46°8°	0%	5 mph8 km/h from SE, gusts 10 mph16 km/h	93%	68%	0
Sat 7a	Fog	45°7° (likely 45°7° to 47°8°)	44°7°	0%	5 mph8 km/h from SE, gusts 9 mph14 km/h	96%	76%	0
Sat 8a	Fog	43°6° (likely 43°6° to 47°8°)	41°5°	0%	5 mph8 km/h from SE, gusts 9 mph14 km/h	100%	77%	0
Sat 9a	Fog	45°7° (likely 45°7° to 48°9°)	44°7°	0%	5 mph8 km/h from SE, gusts 9 mph15 km/h	100%	82%	0
Sat 10a	Fog	50°10° (likely 48°9° to 52°11°)	49°9°	0%	5 mph8 km/h from SE, gusts 9 mph15 km/h	86%	88%	1
Sat 11a	Cloudy	54°12° (likely 51°11° to 56°13°)	54°12°	0%	5 mph8 km/h from SE, gusts 9 mph15 km/h	80%	86%	1
Sat 12p	Partly sunny	59°15° (likely 54°12° to 60°16°)	59°15°	0%	5 mph8 km/h from SE, gusts 9 mph14 km/h	67%	74%	2
Sat 1p	Partly sunny	63°17° (likely 56°13° to 63°17°)	63°17°	0%	5 mph8 km/h from S, gusts 8 mph13 km/h	58%	63%	3
Sat 2p	Partly sunny	65°18° (likely 60°16° to 65°18°)	65°18°	0%	5 mph8 km/h from S, gusts 7 mph11 km/h	54%	46%	3
Sat 3p	Partly sunny	67°19° (likely 62°17° to 67°19°)	67°19°	0%	5 mph8 km/h from S, gusts 6 mph10 km/h	49%	49%	3
Sat 4p	Partly sunny	68°20° (likely 63°17° to 68°20°)	68°20°	0%	5 mph8 km/h from S, gusts 6 mph10 km/h	45%	55%	2
Sat 5p	Cloudy	68°20° (likely 64°18° to 68°20°)	68°20°	0%	5 mph8 km/h from S, gusts 6 mph10 km/h	43%	78%	1
Sat 6p	Partly sunny	66°19° (likely 62°17° to 66°19°)	66°19°	0%	5 mph8 km/h from SE, gusts 7 mph11 km/h	47%	75%	0
Sat 7p	Partly cloudy	63°17° (likely 57°14° to 63°17°)	63°17°	0%	5 mph8 km/h from SE, gusts 6 mph10 km/h	54%	57%	0
Sat 8p	Partly cloudy	59°15° (likely 54°12° to 59°15°)	59°15°	0%	5 mph8 km/h from SE, gusts 7 mph11 km/h	62%	47%	0
Sat 9p	Clear	54°12° (likely 52°11° to 54°12°)	54°12°	0%	5 mph8 km/h from SE, gusts 9 mph14 km/h	74%	43%	0
Sat 10p	Clear	52°11° (likely 50°10° to 52°11°)	52°11°	0%	5 mph8 km/h from SE, gusts 10 mph16 km/h	80%	10%	0
Sat 11p	Clear	51°11° (likely 50°10° to 51°11°)	51°11°	0%	5 mph8 km/h from SE, gusts 9 mph14 km/h	83%	15%	0
Sun 12a	Clear	50°10° (likely 48°9° to 50°10°)	49°9°	0%	5 mph8 km/h from SE, gusts 8 mph14 km/h	83%	7%	0
Sun 1a	Partly cloudy	50°10° (likely 47°8° to 50°10°)	49°9°	0%	5 mph8 km/h from SE, gusts 9 mph15 km/h	83%	30%	0
Sun 2a	Clear	49°9° (likely 46°8° to 49°9°)	48°9°	0%	5 mph8 km/h from SE, gusts 12 mph19 km/h	86%	7%	0
Sun 3a	Clear	48°9° (likely 46°8° to 48°9°)	47°8°	0%	5 mph8 km/h from SE, gusts 11 mph18 km/h	86%	13%	0
Sun 4a	Clear	47°8° (likely 45°7° to 48°9°)	46°8°	0%	5 mph8 km/h from S, gusts 10 mph16 km/h	89%	18%	0
Sun 5a	Mostly clear	45°7° (likely 44°7° to 47°8°)	44°7°	0%	5 mph8 km/h from S, gusts 9 mph15 km/h	96%	28%	0
Sun 6a	Mostly clear	45°7° (likely 44°7° to 46°8°)	44°7°	0%	5 mph8 km/h from S, gusts 10 mph16 km/h	93%	57%	0
Sun 7a	Partly cloudy	45°7° (likely 43°6° to 45°7°)	44°7°	0%	5 mph8 km/h from S, gusts 8 mph13 km/h	93%	69%	0
Sun 8a	Partly sunny	43°6° (likely 43°6° to 46°8°)	41°5°	0%	5 mph8 km/h from S, gusts 8 mph13 km/h	100%	85%	0
Sun 9a	Cloudy	46°8° (likely 44°7° to 48°9°)	45°7°	0%	5 mph8 km/h from S, gusts 8 mph13 km/h	96%	86%	0
Sun 10a	Cloudy	52°11° (likely 50°10° to 53°12°)	52°11°	0%	5 mph8 km/h from S, gusts 10 mph16 km/h	83%	79%	1
Sun 11a	Cloudy	58°14° (likely 56°13° to 58°14°)	58°14°	0%	5 mph8 km/h from S, gusts 11 mph18 km/h	72%	80%	2
Sun 12p	Cloudy	62°17° (likely 61°16° to 63°17°)	62°17°	0%	5 mph8 km/h from S, gusts 11 mph17 km/h	62%	81%	3
Sun 1p	Cloudy	66°19° (likely 64°18° to 66°19°)	66°19°	0%	5 mph8 km/h from S, gusts 10 mph16 km/h	52%	80%	3
Sun 2p	Cloudy	68°20° (likely 66°19° to 68°20°)	68°20°	0%	5 mph8 km/h from S, gusts 10 mph15 km/h	49%	79%	4
Sun 3p	Cloudy	70°21° (likely 68°20° to 70°21°)	70°21°	0%	5 mph8 km/h from S, gusts 9 mph15 km/h	46%	70%	3
Sun 4p	Cloudy	70°21° (likely 68°20° to 70°21°)	70°21°	0%	5 mph8 km/h from S, gusts 9 mph14 km/h	44%	74%	2
Sun 5p	Mostly sunny	71°22° (likely 67°19° to 71°22°)	71°22°	0%	5 mph8 km/h from S, gusts 8 mph13 km/h	42%	56%	2
Sun 6p	Mostly sunny	69°21° (likely 64°18° to 69°21°)	69°21°	0%	5 mph8 km/h from S, gusts 7 mph12 km/h	45%	41%	1
Sun 7p	Partly cloudy	65°18° (likely 59°15° to 65°18°)	65°18°	0%	5 mph8 km/h from S, gusts 7 mph11 km/h	52%	60%	0
Sun 8p	Mostly cloudy	61°16° (likely 56°13° to 61°16°)	61°16°	0%	5 mph8 km/h from S, gusts 6 mph10 km/h	58%	52%	0
Sun 9p	Cloudy	56°13° (likely 54°12° to 57°14°)	56°13°	0%	0 mph0 km/h, gusts 5 mph8 km/h	69%	66%	0
Sun 10p	Partly cloudy	54°12° (likely 52°11° to 55°13°)	54°12°	0%	0 mph0 km/h, gusts 6 mph9 km/h	74%	74%	0
Sun 11p	Partly cloudy	53°12° (likely 50°10° to 53°12°)	53°12°	0%	0 mph0 km/h, gusts 6 mph9 km/h	77%	71%	0
Mon 12a	Partly cloudy	52°11° (likely 50°10° to 52°11°)	52°11°	0%	0 mph0 km/h, gusts 6 mph9 km/h	80%	73%	0
Mon 1a	Partly cloudy	51°11° (likely 50°10° to 52°11°)	51°11°	0%	0 mph0 km/h, gusts 5 mph8 km/h	80%	70%	0
Mon 2a	Partly cloudy	50°10° (likely 49°9° to 52°11°)	50°10°	0%	0 mph0 km/h, gusts 5 mph7 km/h	83%	75%	0
Mon 3a	Partly cloudy	49°9° (likely 48°9° to 54°12°)	49°9°	0%	0 mph0 km/h, gusts 3 mph6 km/h	86%	67%	0
Mon 4a	Partly cloudy	48°9° (likely 48°9° to 54°12°)	48°9°	0%	0 mph0 km/h, gusts 3 mph5 km/h	86%	61%	0
Mon 5a	Partly cloudy	48°9° (likely 48°9° to 53°12°)	48°9°	0%	0 mph0 km/h, gusts 3 mph5 km/h	86%	56%	0

Days ahead

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

Today, Oct 24. Fog. High 68°20°, low 43°6°. Typical 58°14° / 38°3°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Fog, 43°6°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 68°20°
  Dry
3. Evening
  6 PM–midnight
  Clear, 59°15°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 45°7°
  Dry
Official NWS forecast
Today: Widespread fog before 11am. Mostly sunny, with a high near 68. Southeast wind around 5 mph.
Tonight: Partly cloudy, with a low around 43. Southeast wind around 5 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
64°18°–68°20°
Low, likely
43°6°–45°7°
Typical high / low
58°14° / 38°3°
Wind
8 mph13 km/h, gusts 14 mph22 km/h
UV peak
4
Tomorrow, Oct 25. Cloudy. High 71°22°, low 46°8°. Typical 57°14° / 38°3°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Cloudy, 43°6°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 71°22°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 61°16°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 48°9°
  Dry
Official NWS forecast
Day: Mostly sunny, with a high near 71. South wind around 5 mph.
Night: Partly cloudy, with a low around 46. South wind 0 to 5 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
68°20°–71°22°
Low, likely
43°6°–46°8°
Typical high / low
57°14° / 38°3°
Wind
7 mph11 km/h, gusts 17 mph27 km/h
UV peak
4
Monday, Oct 26. Partly sunny. High 69°21°, low 45°7°. Typical 57°14° / 37°3°. Dry. Mostly agree. Best day outdoors this week.
1. Morning
  6 AM–noon
  Mostly sunny, 47°8°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 70°21°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 59°15°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 49°9°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 69. Northwest wind 0 to 5 mph.
Night: Mostly cloudy, with a low around 45.
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 69°21°).
High, likely
67°19°–71°22°
Low, likely
45°7°–50°10°
Typical high / low
57°14° / 37°3°
Wind
11 mph18 km/h, gusts 21 mph33 km/h
UV peak
4
Tuesday, Oct 27. Mostly cloudy. High 64°18°, low 45°7°. Typical 56°13° / 37°3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 47°8°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 57°14°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 51°11°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 64.
Night: Mostly cloudy, with a low around 45.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
60°16°–68°20°
Low, likely
45°7°–48°9°
Typical high / low
56°13° / 37°3°
Wind
12 mph19 km/h, gusts 23 mph37 km/h
UV peak
4
Wednesday, Oct 28. Cloudy. High 71°22°, low 51°11°. Typical 56°13° / 37°3°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Partly sunny, 51°10°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 70°21°
  Dry
3. Evening
  6 PM–midnight
  Clear, 61°16°
  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 71.
Night: Mostly clear, with a low around 51.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
69°21°–72°22°
Low, likely
48°9°–53°12°
Typical high / low
56°13° / 37°3°
Wind
10 mph17 km/h, gusts 22 mph35 km/h
UV peak
4
Thursday, Oct 29. Partly sunny. High 70°21°, low 45°7°. Typical 55°13° / 36°2°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Mostly sunny, 55°13°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 71°21°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 60°15°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 53°12°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 70.
Night: Partly cloudy, with a low around 45.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
67°19°–74°23°
Low, likely
45°7°–57°14°
Typical high / low
55°13° / 36°2°
Wind
14 mph22 km/h, gusts 29 mph47 km/h
UV peak
3
Friday, Oct 30. Partly sunny. High 68°20°, low 45°7°. Typical 55°13° / 36°2°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 53°12°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 68°20°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 60°15°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 53°11°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 68.
Night: A slight chance of rain showers after 2am. Partly cloudy, with a low around 45.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
65°18°–74°23°
Low, likely
44°7°–57°14°
Typical high / low
55°13° / 36°2°
Wind
10 mph16 km/h, gusts 24 mph39 km/h
UV peak
2
Saturday, Oct 31. Cloudy. High 71°22°, low 53°12°. Typical 54°12° / 36°2°. Rain 0.08 in2 mm, 20% chance. Mostly agree.
1. Morning
  6 AM–noon
  Drizzle, 51°11°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 71°21°
  Dry
3. Evening
  6 PM–midnight
  Drizzle, 65°18°
  20% chance · 0.01 in0.3 mm
4. Overnight
  midnight–6 AM
  Rain, 59°15°
  40% chance · 0.15 in3.7 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
68°20°–75°24°
Low, likely
51°11°–55°13°
Typical high / low
54°12° / 36°2°
Wind
13 mph21 km/h, gusts 25 mph41 km/h
UV peak
2
Sunday, Nov 1. Showers. High 66°19°, low 58°14°. Typical 54°12° / 35°2°. Rain 0.52 in13 mm, 50% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Drizzle, 59°15°
  50% chance · 0.04 in1 mm
2. Afternoon
  noon–6 PM
  Cloudy, 66°19°
  50% chance · 0.08 in1.9 mm
3. Evening
  6 PM–midnight
  Drizzle, 61°16°
  50% chance · 0.3 in7.5 mm
4. Overnight
  midnight–6 AM
  Drizzle, 59°15°
  50% chance · 0.03 in0.7 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°–70°21°
Low, likely
56°13°–61°16°
Typical high / low
54°12° / 35°2°
Wind
20 mph32 km/h, gusts 33 mph54 km/h
Monday, Nov 2. Cloudy. High 64°18°, low 56°13°. Typical 54°12° / 35°2°. Rain 0.26 in6.6 mm, 50% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 59°15°
  40% chance · 0.04 in1 mm
2. Afternoon
  noon–6 PM
  Drizzle, 64°18°
  30% chance · 0.2 in5.1 mm
3. Evening
  6 PM–midnight
  Drizzle, 59°15°
  30% chance · 0.28 in7.1 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
61°16°–68°20°
Low, likely
52°11°–61°16°
Typical high / low
54°12° / 35°2°
Wind
10 mph16 km/h, gusts 19 mph31 km/h
UV peak
3

10 days15 days30 days

The outlook

Today
Dry, high 68°, low 43°.
Tomorrow
Dry, high 71°, low 46°, warming up.
Monday
Dry, high 69°, low 45°.
Rest of week
Highs 64–71°; chance of precipitation on Sunday.

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

Spring Creek at Rambadt Road Near Centreville MI

4.8 mi

Level: 1.5 ft
Flow: under 1 cfs

Reading from Sat 4:45 AM · NWS gauge page

Prairie River (MI) near Nottawa

8.6 mi

Level: 3.4 ft
Flow: 63 cfs

Reading from Sat 5 AM · NWS gauge page

St. Joseph River (MI/IN) at Three Rivers

10 mi

Below flood stage

Level: 3.2 ft
Flow: 629 cfs

Reading from Sat 4:45 AM · NWS gauge page

Prairie River (MI) at US 12 Near Burr Oak MI

15 mi

Level: 15.3 ft

Reading from Sat 5 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 129

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 9
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 46°F).

Open the windows?

Today, 1:00 PM–7:00 PM

Good stretch to open the windows.

Is this typical?

Three Rivers · official normals 1991–2020 · records 1895–2026

Oct 24, today vs a typical year

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

Last 7 days vs normal

On average 2°1° warmer than normal (daily mean temperature).

−5°−3°SunOct 18
−1°MonOct 19
+2°+1°TueOct 20
+6°+3°WedOct 21
—ThuOct 22
+8°+4°FriOct 23
—SatOct 24

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

Sun & moon

Sun

Daylight: 10 h 41 min; Losing 2 min 35 s a day; shortest Dec 21, 1 h 35 min less
Golden hour: 6:07–7:04 PM; Morning 7:47–8:43 AM
Blue hour: 7:04–7:14 PM; Morning 7:36–7:47 AM; first light 7:36 AM

Stars tonight? Poor

Clouds most of the night (about 72% cover).

Moon

Waxing gibbous

96% lit · growing

Today: sets 6:17 AM · rises 5:44 PM
Full moon: Oct 26
New moon: Nov 9

Looking west from Mendon. The highest point on the skyline is about 1,600 ft, 19 mi away.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