Dense Fog Advisory
Ends in 2 h 15 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 7:20 AM EDT at KFWA

Petroleum, IN weather

Foggy and 46°8°, 10°6° warmer than a typical Oct 24.

Mostly agree

Now 46°8°

Fog

Wind: 5 mph7 km/h; From the east. Light through 7 PM
Visibility (notable): 0.1 mi0.2 km; Dense fog
Dew point: 46°8°; Comfortable
Humidity: 100%; Air 46°8°, dew point 46°8° · fog or dew likely
UV index: 0Low; Moderate 12–4 PM · peak 4
Air quality: 69Moderate; Main pollutant: PM2.5 (fine particles)
Pressure: 30.43 inHg1030 hPa; Rising slowly · +0.03 inHg+1.1 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 60°16° today by noon
High 70°21° today at 5 PM
Below 60°16° tonight after 9 PM

This morningUp to 55°13° by 11 AM · Mostly cloudy
This afternoonUp to 70°21° by 5 PM · Mostly cloudy
TonightDown to 45°7° by 5 AM · Clear
Tomorrow morningUp to 59°15° by 11 AM · Partly cloudy
Tomorrow afternoonUp to 73°23° by 5 PM · Mostly cloudy
Tomorrow nightDown to 47°8° by 5 AM · Partly 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 7a	Fog	41°5° (likely 41°5° to 43°6°)	41°5°	0%	0 mph0 km/h, gusts 7 mph11 km/h	99%	65%	0
Sat 8a	Fog	41°5° (likely 41°5° to 44°7°)	41°5°	0%	0 mph0 km/h, gusts 6 mph9 km/h	100%	71%	0
Sat 9a	Fog	43°6° (likely 43°6° to 46°8°)	43°6°	0%	0 mph0 km/h, gusts 6 mph10 km/h	100%	73%	0
Sat 10a	Fog	50°10° (likely 47°8° to 52°11°)	50°10°	0%	0 mph0 km/h, gusts 6 mph9 km/h	83%	66%	1
Sat 11a	Fog	55°13° (likely 51°11° to 58°14°)	55°13°	0%	0 mph0 km/h, gusts 6 mph9 km/h	74%	49%	2
Sat 12p	Partly sunny	61°16° (likely 56°13° to 62°17°)	61°16°	0%	0 mph0 km/h, gusts 6 mph9 km/h	60%	53%	3
Sat 1p	Cloudy	66°19° (likely 61°16° to 67°19°)	66°19°	0%	0 mph0 km/h, gusts 7 mph11 km/h	50%	66%	4
Sat 2p	Cloudy	68°20° (likely 65°18° to 69°21°)	68°20°	0%	0 mph0 km/h, gusts 6 mph10 km/h	47%	61%	4
Sat 3p	Cloudy	69°21° (likely 66°19° to 70°21°)	69°21°	0%	0 mph0 km/h, gusts 6 mph10 km/h	44%	65%	3
Sat 4p	Cloudy	69°21° (likely 66°19° to 70°21°)	69°21°	0%	0 mph0 km/h, gusts 8 mph13 km/h	42%	64%	2
Sat 5p	Cloudy	70°21° (likely 65°18° to 70°21°)	70°21°	0%	0 mph0 km/h, gusts 8 mph13 km/h	41%	62%	1
Sat 6p	Partly sunny	68°20° (likely 63°17° to 68°20°)	68°20°	0%	0 mph0 km/h, gusts 9 mph14 km/h	43%	65%	0
Sat 7p	Mostly clear	64°18° (likely 57°14° to 64°18°)	64°18°	0%	0 mph0 km/h, gusts 8 mph13 km/h	52%	41%	0
Sat 8p	Clear	60°16° (likely 54°12° to 60°16°)	60°16°	0%	0 mph0 km/h, gusts 10 mph16 km/h	60%	25%	0
Sat 9p	Clear	54°12° (likely 52°11° to 55°13°)	54°12°	0%	0 mph0 km/h, gusts 10 mph16 km/h	74%	19%	0
Sat 10p	Mostly clear	52°11° (likely 50°10° to 53°12°)	52°11°	0%	0 mph0 km/h, gusts 10 mph17 km/h	80%	17%	0
Sat 11p	Clear	51°11° (likely 48°9° to 52°11°)	51°11°	0%	0 mph0 km/h, gusts 10 mph17 km/h	80%	15%	0
Sun 12a	Clear	50°10° (likely 47°8° to 51°11°)	50°10°	0%	0 mph0 km/h, gusts 9 mph14 km/h	83%	10%	0
Sun 1a	Clear	49°9° (likely 47°8° to 50°10°)	49°9°	0%	0 mph0 km/h, gusts 9 mph14 km/h	83%	44%	0
Sun 2a	Clear	48°9° (likely 46°8° to 49°9°)	48°9°	0%	0 mph0 km/h, gusts 9 mph15 km/h	83%	23%	0
Sun 3a	Clear	47°8° (likely 44°7° to 48°9°)	47°8°	0%	0 mph0 km/h, gusts 10 mph16 km/h	86%	2%	0
Sun 4a	Clear	46°8° (likely 43°6° to 48°9°)	46°8°	0%	0 mph0 km/h, gusts 10 mph17 km/h	86%	4%	0
Sun 5a	Clear	45°7° (likely 42°6° to 47°8°)	45°7°	0%	0 mph0 km/h, gusts 11 mph18 km/h	86%	11%	0
Sun 6a	Mostly clear	44°7° (likely 42°6° to 46°8°)	44°7°	0%	0 mph0 km/h, gusts 10 mph17 km/h	89%	29%	0
Sun 7a	Clear	43°6° (likely 41°5° to 44°7°)	43°6°	0%	0 mph0 km/h, gusts 9 mph14 km/h	93%	3%	0
Sun 8a	Sunny	43°6° (likely 40°4° to 44°7°)	43°6°	0%	0 mph0 km/h, gusts 8 mph13 km/h	93%	4%	0
Sun 9a	Sunny	46°8° (likely 43°6° to 48°9°)	46°8°	0%	0 mph0 km/h, gusts 8 mph14 km/h	96%	42%	0
Sun 10a	Mostly sunny	53°12° (likely 50°10° to 53°12°)	53°12°	0%	0 mph0 km/h, gusts 8 mph13 km/h	83%	56%	1
Sun 11a	Mostly sunny	59°15° (likely 58°14° to 59°15°)	59°15°	0%	0 mph0 km/h, gusts 9 mph14 km/h	69%	66%	2
Sun 12p	Mostly sunny	64°18° (likely 63°17° to 66°19°)	64°18°	0%	0 mph0 km/h, gusts 7 mph11 km/h	56%	57%	3
Sun 1p	Partly sunny	68°20° (likely 67°19° to 70°21°)	68°20°	0%	0 mph0 km/h, gusts 5 mph8 km/h	47%	63%	4
Sun 2p	Cloudy	70°21° (likely 69°21° to 71°22°)	70°21°	0%	0 mph0 km/h, gusts 5 mph8 km/h	42%	79%	4
Sun 3p	Cloudy	71°22° (likely 70°21° to 72°22°)	71°22°	0%	0 mph0 km/h, gusts 6 mph9 km/h	41%	80%	4
Sun 4p	Cloudy	72°22° (likely 70°21° to 73°23°)	72°22°	0%	0 mph0 km/h, gusts 6 mph9 km/h	38%	66%	3
Sun 5p	Cloudy	73°23° (likely 69°21° to 73°23°)	73°23°	0%	0 mph0 km/h, gusts 6 mph10 km/h	35%	70%	2
Sun 6p	Partly sunny	71°22° (likely 66°19° to 71°22°)	71°22°	0%	0 mph0 km/h, gusts 5 mph8 km/h	41%	72%	1
Sun 7p	Cloudy	67°19° (likely 61°16° to 67°19°)	67°19°	0%	0 mph0 km/h, gusts 5 mph8 km/h	45%	78%	0
Sun 8p	Cloudy	62°17° (likely 59°15° to 62°17°)	62°17°	0%	0 mph0 km/h, gusts 4 mph7 km/h	56%	72%	0
Sun 9p	Partly cloudy	56°13° (likely 56°13° to 59°15°)	56°13°	0%	0 mph0 km/h, gusts 6 mph10 km/h	66%	36%	0
Sun 10p	Cloudy	53°12° (likely 53°12° to 56°13°)	53°12°	0%	0 mph0 km/h, gusts 5 mph8 km/h	74%	56%	0
Sun 11p	Cloudy	52°11° (likely 52°11° to 54°12°)	52°11°	0%	0 mph0 km/h, gusts 6 mph10 km/h	77%	60%	0
Mon 12a	Mostly clear	51°11° (likely 50°10° to 53°12°)	51°11°	0%	0 mph0 km/h, gusts 7 mph12 km/h	80%	46%	0
Mon 1a	Partly cloudy	50°10° (likely 49°9° to 52°11°)	50°10°	0%	0 mph0 km/h, gusts 8 mph12 km/h	80%	57%	0
Mon 2a	Clear	50°10° (likely 48°9° to 52°11°)	50°10°	0%	0 mph0 km/h, gusts 7 mph11 km/h	80%	53%	0
Mon 3a	Partly cloudy	49°9° (likely 46°8° to 55°13°)	49°9°	0%	0 mph0 km/h, gusts 5 mph8 km/h	80%	65%	0
Mon 4a	Partly cloudy	48°9° (likely 46°8° to 54°12°)	48°9°	0%	0 mph0 km/h, gusts 5 mph8 km/h	80%	62%	0
Mon 5a	Partly cloudy	47°8° (likely 45°7° to 54°12°)	47°8°	0%	0 mph0 km/h, gusts 5 mph8 km/h	83%	57%	0
Mon 6a	Partly cloudy	46°8° (likely 44°7° to 53°12°)	46°8°	0%	0 mph0 km/h, gusts 4 mph7 km/h	86%	70%	0

Days ahead

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

Today, Oct 24. Fog. High 70°21°, low 43°6°. Typical 60°16° / 40°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Fog, 41°5°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 70°21°
  Dry
3. Evening
  6 PM–midnight
  Clear, 60°16°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 45°7°
  Dry
Official NWS forecast
Today: Areas of fog before noon. Mostly sunny, with a high near 70. Southeast wind around 0 mph.
Tonight: Mostly clear, with a low around 43. Southeast wind around 0 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
66°19°–70°21°
Low, likely
39°4°–43°6°
Typical high / low
60°16° / 40°4°
Wind
8 mph13 km/h, gusts 15 mph24 km/h
UV peak
4
Tomorrow, Oct 25. Cloudy. High 73°23°, low 45°7°. Typical 60°16° / 40°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 43°6°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 73°23°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 62°17°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 47°8°
  Dry
Official NWS forecast
Day: Mostly sunny, with a high near 73. South wind around 0 mph.
Night: Partly cloudy, with a low around 45. South wind around 0 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
70°21°–73°23°
Low, likely
40°4°–45°7°
Typical high / low
60°16° / 40°4°
Wind
7 mph11 km/h, gusts 17 mph28 km/h
UV peak
4
Monday, Oct 26. Partly sunny. High 73°23°, low 46°8°. Typical 59°15° / 40°4°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Cloudy, 47°8°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 71°22°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 61°16°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 50°10°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 73. Southwest wind around 0 mph.
Night: Mostly cloudy, with a low around 46.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
70°21°–73°23°
Low, likely
44°7°–50°10°
Typical high / low
59°15° / 40°4°
Wind
7 mph11 km/h
UV peak
4
Tuesday, Oct 27. Cloudy. High 68°20°, low 47°8°. Typical 59°15° / 39°4°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 49°10°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 69°20°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 61°16°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 54°12°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 68.
Night: Mostly cloudy, with a low around 47.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
66°19°–72°22°
Low, likely
46°8°–51°11°
Typical high / low
59°15° / 39°4°
Wind
9 mph15 km/h, gusts 20 mph32 km/h
UV peak
4
Wednesday, Oct 28. Cloudy. High 73°23°, low 52°11°. Typical 58°14° / 39°4°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Cloudy, 52°11°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 73°23°
  Dry
3. Evening
  6 PM–midnight
  Clear, 62°17°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 54°12°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 73.
Night: Mostly clear, with a low around 52.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
72°22°–73°23°
Low, likely
49°9°–55°13°
Typical high / low
58°14° / 39°4°
Wind
10 mph16 km/h, gusts 21 mph34 km/h
UV peak
4
Thursday, Oct 29. Partly sunny. High 73°23°, low 46°8°. Typical 58°14° / 38°3°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 52°11°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 74°23°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 63°17°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 53°12°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 73.
Night: Partly cloudy, with a low around 46.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
72°22°–74°23°
Low, likely
46°8°–54°12°
Typical high / low
58°14° / 38°3°
Wind
12 mph19 km/h, gusts 25 mph40 km/h
UV peak
4
Friday, Oct 30. Cloudy. High 71°22°, low 47°8°. Typical 57°14° / 38°3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 51°11°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 70°21°
  Dry
3. Evening
  6 PM–midnight
  Clear, 59°15°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 49°9°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 71.
Night: Mostly cloudy, with a low around 47.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
66°19°–75°24°
Low, likely
45°7°–52°11°
Typical high / low
57°14° / 38°3°
Wind
10 mph16 km/h, gusts 27 mph43 km/h
UV peak
2
Saturday, Oct 31. Cloudy. High 71°22°, low 51°11°. Typical 57°14° / 38°3°. Rain 0.02 in0.5 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 48°9°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 71°22°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 63°17°
  20% chance
4. Overnight
  midnight–6 AM
  Drizzle, 58°14°
  40% chance · 0.03 in0.8 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°–78°26°
Low, likely
45°7°–56°13°
Typical high / low
57°14° / 38°3°
Wind
11 mph18 km/h, gusts 22 mph35 km/h
UV peak
3
Sunday, Nov 1. Drizzle. High 69°21°, low 58°14°. Typical 56°13° / 37°3°. Rain 0.33 in8.4 mm, 50% chance. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 58°14°
  50% chance · 0.03 in0.8 mm
2. Afternoon
  noon–6 PM
  Drizzle, 69°20°
  50% chance · 0.06 in1.4 mm
3. Evening
  6 PM–midnight
  Drizzle, 64°18°
  50% chance · 0.2 in5.1 mm
4. Overnight
  midnight–6 AM
  Rain, 61°16°
  40% chance · 0.13 in3.3 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°–72°22°
Low, likely
51°11°–61°16°
Typical high / low
56°13° / 37°3°
Wind
20 mph32 km/h, gusts 33 mph53 km/h
UV peak
2
Monday, Nov 2. Rain. High 65°18°, low 59°15°. Typical 56°13° / 37°3°. Rain 0.53 in13 mm, 40% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Rain, 61°16°
  40% chance · 0.14 in3.7 mm
2. Afternoon
  noon–6 PM
  Drizzle, 64°18°
  40% chance · 0.24 in6 mm
3. Evening
  6 PM–midnight
  Drizzle, 60°16°
  40% chance · 0.36 in9.2 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
58°14°–70°21°
Low, likely
54°12°–63°17°
Typical high / low
56°13° / 37°3°
Wind
21 mph33 km/h

10 days15 days30 days

The outlook

Today
Dry, high 70°, low 43°.
Tomorrow
Dry, high 73°, low 45°, warming up.
Monday
Dry, high 73°, low 46°.
Rest of week
Highs 65–73°; chance of precipitation on Sunday, Monday.

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

Salamonie River at Portland

14 mi

Below flood stage

Level: 2.2 ft
Flow: 7 cfs

Forecast peak 2.1 ft Sat 8 AM

Reading from Sat 5:45 AM · NWS gauge page

Wabash River at Linn Grove

6.7 mi

Below flood stage

Level: 4.8 ft
Flow: 52 cfs

Reading from Sat 5:45 AM · NWS gauge page

Wabash River at Bluffton

9.0 mi

Below flood stage

Level: 1.7 ft
Flow: 85 cfs

Reading from Sat 5:45 AM · NWS gauge page

Salamonie River near Warren

17 mi

Below flood stage

Level: 6.6 ft
Flow: 91 cfs

Reading from Sat 5:45 AM · NWS gauge page

For your home

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

Heating this week

About 82% less heating than a typical week.

This week 20Typical 113

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 11
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 46°F).

Open the windows?

Today, 12:00 PM–8:00 PM

Good stretch to open the windows.

Is this typical?

Berne Wwtp · official normals 1991–2020 · records 1910–2026

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

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

Sun & moon

Sun

Daylight: 10 h 46 min; Losing 2 min 30 s a day; shortest Dec 21, 1 h 30 min less
Golden hour: 6:09–7:04 PM; Morning 7:44–8:39 AM
Blue hour: 7:04–7:15 PM; Morning 7:33–7:44 AM; first light 7:33 AM

Stars tonight? Fair

Mostly clear 8 PM–1 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

96% lit · growing

Today: sets 6:14 AM · rises 5:44 PM
Full moon: Oct 26
New moon: Nov 9

Looking west from Petroleum. 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

Petroleum, IN weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Salamonie River at Portland

Wabash River at Linn Grove

Wabash River at Bluffton

Salamonie River near Warren

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