Dense Fog Advisory
Ends in 51 min
When
Until 10 AM EDT this morning.
Where
Auglaize, Hardin, and Mercer Counties.
Issued for this forecast zone · National Weather Service Wilmington OH
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: Hardin; Mercer; Auglaize
See it on weather.gov (opens in a new tab)

Observed 8:50 AM EDT at KAOH

St. Johns, OH weather

Foggy and 39°4°, 9°5° warmer than a typical Oct 24.

Forecasts agree

Now 39°4°

Fog

Wind: Calm; Light through 9 PM
Visibility: 1.3 mi2.1 km; Fog · under 3 mi5 km
Dew point: 39°4°; Comfortable
Humidity: 100%; Air 39°4°, dew point 39°4° · fog or dew likely
UV index: 0Low; Moderate 12–4 PM · peak 4
Air quality: 16Good; Main pollutant: PM2.5 (fine particles)
Pressure: 30.44 inHg1031 hPa; Rising slowly · +0.04 inHg+1.3 hPa in 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

2°1° cooler than this time yesterday (39°4° then, 37°3° now)

Good hours for

Fog until 10 AM
Above 60°16° today by noon
High 69°21° today at 5 PM
Below 60°16° tonight after 8 PM

This morningUp to 58°14° by 11 AM · Partly cloudy
This afternoonUp to 69°21° by 5 PM · Partly cloudy
TonightDown to 45°7° by 5 AM · Clear
Tomorrow morningUp to 59°15° by 11 AM · Clear
Tomorrow afternoonUp to 71°22° by 5 PM · Mostly cloudy
Tomorrow nightDown to 47°8° by 4 AM · Partly cloudy
Monday morningNear 46°8° · 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 9a	Fog	47°8° (likely 44°7° to 47°8°)	47°8°	0%	1 mph2 km/h from SE, gusts 3 mph5 km/h	92%	53%	0
Sat 10a	Sunny	52°11° (likely 49°9° to 54°12°)	52°11°	0%	1 mph2 km/h from SE, gusts 3 mph5 km/h	80%	40%	1
Sat 11a	Sunny	58°14° (likely 52°11° to 59°15°)	58°14°	0%	0 mph0 km/h, gusts 3 mph5 km/h	63%	35%	2
Sat 12p	Mostly sunny	62°17° (likely 56°13° to 63°17°)	62°17°	0%	0 mph0 km/h, gusts 4 mph7 km/h	55%	19%	3
Sat 1p	Mostly sunny	65°18° (likely 60°16° to 65°18°)	65°18°	0%	0 mph0 km/h, gusts 4 mph6 km/h	52%	42%	4
Sat 2p	Mostly sunny	68°20° (likely 64°18° to 68°20°)	68°20°	0%	0 mph0 km/h, gusts 4 mph6 km/h	46%	51%	4
Sat 3p	Mostly sunny	68°20° (likely 65°18° to 68°20°)	68°20°	0%	0 mph0 km/h, gusts 3 mph5 km/h	46%	67%	3
Sat 4p	Mostly sunny	68°20° (likely 66°19° to 68°20°)	68°20°	0%	0 mph0 km/h, gusts 5 mph7 km/h	43%	37%	2
Sat 5p	Sunny	69°21° (likely 65°18° to 69°21°)	69°21°	0%	1 mph2 km/h from E, gusts 7 mph10 km/h	44%	10%	1
Sat 6p	Sunny	67°19° (likely 62°17° to 67°19°)	67°19°	0%	0 mph0 km/h, gusts 7 mph11 km/h	47%	26%	0
Sat 7p	Clear	63°17° (likely 57°14° to 63°17°)	63°17°	0%	2 mph3 km/h from E, gusts 7 mph12 km/h	52%	38%	0
Sat 8p	Mostly clear	59°15° (likely 55°13° to 59°15°)	59°15°	0%	2 mph3 km/h from E, gusts 8 mph14 km/h	61%	37%	0
Sat 9p	Clear	54°12° (likely 53°12° to 54°12°)	54°12°	0%	2 mph3 km/h from SE, gusts 8 mph12 km/h	71%	43%	0
Sat 10p	Clear	52°11° (likely 52°11° to 53°12°)	52°11°	0%	2 mph3 km/h from SE, gusts 9 mph14 km/h	78%	44%	0
Sat 11p	Mostly clear	51°11° (likely 50°10° to 51°11°)	51°11°	0%	2 mph3 km/h from SE, gusts 9 mph14 km/h	81%	12%	0
Sun 12a	Clear	50°10° (likely 49°9° to 50°10°)	50°10°	0%	2 mph3 km/h from SE, gusts 9 mph15 km/h	83%	4%	0
Sun 1a	Clear	49°9° (likely 47°8° to 49°9°)	49°9°	0%	2 mph3 km/h from SE, gusts 10 mph16 km/h	84%	1%	0
Sun 2a	Mostly clear	48°9° (likely 46°8° to 48°9°)	48°9°	0%	2 mph3 km/h from SE, gusts 10 mph16 km/h	86%	8%	0
Sun 3a	Clear	47°8° (likely 45°7° to 47°8°)	47°8°	0%	2 mph3 km/h from SE, gusts 10 mph15 km/h	89%	1%	0
Sun 4a	Clear	46°8° (likely 44°7° to 47°8°)	46°8°	0%	2 mph3 km/h from SE, gusts 10 mph15 km/h	91%	0%	0
Sun 5a	Clear	45°7° (likely 44°7° to 46°8°)	45°7°	0%	2 mph3 km/h from SE, gusts 9 mph15 km/h	94%	1%	0
Sun 6a	Clear	45°7° (likely 43°6° to 45°7°)	45°7°	0%	2 mph3 km/h from SE, gusts 10 mph16 km/h	94%	3%	0
Sun 7a	Clear	45°7° (likely 43°6° to 45°7°)	45°7°	0%	2 mph3 km/h from SE, gusts 10 mph16 km/h	93%	9%	0
Sun 8a	Sunny	43°6° (likely 43°6° to 45°7°)	43°6°	0%	2 mph3 km/h from SE, gusts 9 mph15 km/h	97%	5%	0
Sun 9a	Sunny	47°8° (likely 45°7° to 48°9°)	46°8°	0%	3 mph5 km/h from S, gusts 10 mph16 km/h	91%	2%	0
Sun 10a	Sunny	53°12° (likely 50°10° to 53°12°)	53°12°	0%	3 mph5 km/h from S, gusts 8 mph14 km/h	77%	41%	1
Sun 11a	Sunny	59°15° (likely 56°13° to 59°15°)	59°15°	0%	3 mph5 km/h from S, gusts 9 mph14 km/h	62%	13%	2
Sun 12p	Partly sunny	63°17° (likely 61°16° to 63°17°)	63°17°	0%	3 mph5 km/h from S, gusts 8 mph12 km/h	54%	58%	3
Sun 1p	Partly sunny	66°19° (likely 65°18° to 66°19°)	66°19°	0%	3 mph5 km/h from S, gusts 6 mph10 km/h	48%	57%	4
Sun 2p	Partly sunny	68°20° (likely 66°19° to 68°20°)	68°20°	0%	3 mph5 km/h from S, gusts 6 mph9 km/h	43%	54%	4
Sun 3p	Mostly sunny	69°21° (likely 67°19° to 69°21°)	69°21°	0%	3 mph5 km/h from S, gusts 6 mph9 km/h	41%	56%	4
Sun 4p	Cloudy	70°21° (likely 68°20° to 70°21°)	70°21°	0%	3 mph5 km/h from S, gusts 6 mph10 km/h	40%	76%	3
Sun 5p	Mostly sunny	71°22° (likely 67°19° to 71°22°)	71°22°	0%	2 mph3 km/h from S, gusts 6 mph10 km/h	40%	68%	2
Sun 6p	Cloudy	68°20° (likely 64°18° to 68°20°)	68°20°	0%	1 mph2 km/h from S, gusts 5 mph9 km/h	44%	67%	1
Sun 7p	Partly cloudy	65°18° (likely 59°15° to 65°18°)	65°18°	0%	1 mph2 km/h from S, gusts 4 mph7 km/h	47%	65%	0
Sun 8p	Mostly clear	60°16° (likely 57°14° to 60°16°)	60°16°	0%	1 mph2 km/h from SE, gusts 3 mph6 km/h	55%	58%	0
Sun 9p	Mostly clear	55°13° (likely 55°13° to 57°14°)	55°13°	0%	1 mph2 km/h from S, gusts 5 mph8 km/h	70%	55%	0
Sun 10p	Clear	54°12° (likely 51°11° to 54°12°)	54°12°	0%	1 mph2 km/h from S, gusts 7 mph11 km/h	72%	17%	0
Sun 11p	Clear	53°12° (likely 50°10° to 53°12°)	53°12°	0%	2 mph3 km/h from S, gusts 8 mph13 km/h	78%	6%	0
Mon 12a	Mostly clear	52°11° (likely 49°9° to 52°11°)	52°11°	0%	2 mph3 km/h from S, gusts 9 mph15 km/h	81%	43%	0
Mon 1a	Mostly clear	50°10° (likely 48°9° to 51°11°)	50°10°	0%	3 mph5 km/h from S, gusts 10 mph16 km/h	81%	52%	0
Mon 2a	Mostly clear	49°9° (likely 48°9° to 51°11°)	49°9°	0%	3 mph5 km/h from S, gusts 10 mph15 km/h	85%	60%	0
Mon 3a	Partly cloudy	48°9° (likely 47°8° to 53°12°)	47°8°	0%	3 mph5 km/h from S, gusts 6 mph10 km/h	88%	43%	0
Mon 4a	Partly cloudy	47°8° (likely 46°8° to 52°11°)	46°8°	0%	3 mph5 km/h from S, gusts 6 mph10 km/h	88%	57%	0
Mon 5a	Partly cloudy	47°8° (likely 45°7° to 52°11°)	46°8°	0%	3 mph5 km/h from S, gusts 6 mph10 km/h	90%	47%	0
Mon 6a	Partly cloudy	46°8° (likely 45°7° to 52°11°)	45°7°	0%	3 mph5 km/h from S, gusts 6 mph9 km/h	93%	46%	0
Mon 7a	Partly cloudy	45°7° (likely 44°7° to 51°11°)	45°7°	0%	2 mph3 km/h from S, gusts 6 mph9 km/h	94%	30%	0
Mon 8a	Partly sunny	46°8° (likely 43°6° to 50°10°)	46°8°	0%	2 mph3 km/h from S, gusts 5 mph8 km/h	92%	35%	0

Days ahead

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

Today, Oct 24. Fog. High 69°21°, low 43°6°. Typical 60°16° / 41°5°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 58°14°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 69°21°
  Dry
3. Evening
  6 PM–midnight
  Clear, 59°15°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 45°7°
  Dry
Official NWS forecast
Today: Patchy fog before 10am. Sunny, with a high near 69. East wind around 1 mph.
Tonight: Mostly clear, with a low around 43. Southeast wind around 2 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
66°19°–69°21°
Low, likely
42°6°–44°7°
Typical high / low
60°16° / 41°5°
Wind
8 mph13 km/h, gusts 15 mph24 km/h
UV peak
4
Tomorrow, Oct 25. Cloudy. High 71°22°, low 45°7°. Typical 60°16° / 41°5°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 43°6°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 71°22°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 60°16°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 47°8°
  Dry
Official NWS forecast
Day: Sunny, with a high near 71. South wind around 3 mph.
Night: Mostly clear, with a low around 45. South wind around 3 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
68°20°–71°22°
Low, likely
43°6°–45°7°
Typical high / low
60°16° / 41°5°
Wind
8 mph12 km/h, gusts 15 mph24 km/h
UV peak
4
Monday, Oct 26. Partly sunny. High 72°22°, low 47°8°. Typical 60°16° / 40°4°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Partly sunny, 46°8°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 71°21°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 60°15°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 49°10°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 72. Southwest wind around 3 mph.
Night: Mostly cloudy, with a low around 47.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
69°21°–72°22°
Low, likely
44°7°–49°9°
Typical high / low
60°16° / 40°4°
Wind
8 mph13 km/h
UV peak
4
Tuesday, Oct 27. Cloudy. High 67°19°, low 47°8°. Typical 59°15° / 40°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 49°9°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 68°20°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 59°15°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 52°11°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 67.
Night: Mostly cloudy, with a low around 47.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
67°19°–71°22°
Low, likely
47°8°–49°9°
Typical high / low
59°15° / 40°4°
Wind
10 mph16 km/h, gusts 16 mph26 km/h
UV peak
4
Wednesday, Oct 28. Cloudy. High 72°22°, low 51°11°. Typical 59°15° / 40°4°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Cloudy, 51°10°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 71°22°
  Dry
3. Evening
  6 PM–midnight
  Clear, 60°16°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 53°12°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 72.
Night: Mostly clear, with a low around 51.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
70°21°–72°22°
Low, likely
49°9°–53°12°
Typical high / low
59°15° / 40°4°
Wind
10 mph15 km/h, gusts 17 mph28 km/h
UV peak
4
Thursday, Oct 29. Mostly sunny. High 73°23°, low 47°8°. Typical 58°14° / 39°4°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 52°11°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 73°23°
  Dry
3. Evening
  6 PM–midnight
  Clear, 62°16°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 51°11°
  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 47.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
72°22°–73°23°
Low, likely
47°8°–53°12°
Typical high / low
58°14° / 39°4°
Wind
11 mph18 km/h, gusts 24 mph38 km/h
UV peak
4
Friday, Oct 30. Cloudy. High 70°21°, low 47°8°. Typical 58°14° / 39°4°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 50°10°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 69°20°
  Dry
3. Evening
  6 PM–midnight
  Clear, 57°14°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 47°8°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 70.
Night: Mostly cloudy, with a low around 47.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
65°18°–74°23°
Low, likely
44°7°–51°11°
Typical high / low
58°14° / 39°4°
Wind
11 mph17 km/h, gusts 22 mph36 km/h
UV peak
2
Saturday, Oct 31. Cloudy. High 69°21°, low 50°10°. Typical 57°14° / 38°3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 47°9°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 68°20°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 60°16°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 55°13°
  30% chance · 0.05 in1.2 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
59°15°–74°23°
Low, likely
43°6°–55°13°
Typical high / low
57°14° / 38°3°
Wind
11 mph18 km/h, gusts 22 mph36 km/h
UV peak
3
Sunday, Nov 1. Drizzle. High 69°21°, low 55°13°. Typical 57°14° / 38°3°. Rain 0.21 in5.3 mm, 50% chance. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 55°13°
  50% chance · 0.06 in1.4 mm
2. Afternoon
  noon–6 PM
  Cloudy, 69°21°
  50% chance · 0.02 in0.6 mm
3. Evening
  6 PM–midnight
  Drizzle, 65°19°
  50% chance · 0.09 in2.2 mm
4. Overnight
  midnight–6 AM
  Drizzle, 61°16°
  50% chance · 0.17 in4.2 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.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
66°19°–72°22°
Low, likely
48°9°–60°16°
Typical high / low
57°14° / 38°3°
Wind
21 mph33 km/h, gusts 32 mph52 km/h
UV peak
2
Monday, Nov 2. Rain. High 66°19°, low 58°14°. Typical 56°13° / 38°3°. Rain 0.59 in15 mm, 50% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Rain, 61°16°
  40% chance · 0.25 in6.4 mm
2. Afternoon
  noon–6 PM
  Rain, 63°17°
  40% chance · 0.48 in12 mm
3. Evening
  6 PM–midnight
  Drizzle, 59°15°
  40% chance · 0.4 in10 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°–71°22°
Low, likely
53°12°–63°17°
Typical high / low
56°13° / 38°3°
Wind
22 mph35 km/h, gusts 41 mph66 km/h

10 days15 days30 days

The outlook

Today
Dry, high 69°, low 43°.
Tomorrow
Dry, high 71°, low 45°.
Monday
Dry, high 72°, low 47°.
Rest of week
Highs 66–73°; chance of precipitation on Sunday, Monday.

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

Great Miami River at Sidney

19 mi

Below flood stage

Level: 1.1 ft
Flow: 127 cfs

Forecast peak 1.1 ft Sat 2 PM

Reading from Sat 7:30 AM · NWS gauge page

Ottawa River at Lima

12 mi

Level: 11.0 ft
Flow: 6 cfs

Reading from Sat 7:30 AM · NWS gauge page

Bokengahalas Creek above DeGraff

19 mi

Level: 1.4 ft

Reading from Sat 7:30 AM · NWS gauge page

Loramie Creek near Newport

23 mi

Level: 3.5 ft
Flow: 17 cfs

Reading from Sat 7:30 AM · NWS gauge page

For your home

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

Heating this week

About 82% less heating than a typical week.

This week 20Typical 108

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.

Comfort

Dry air outside (dew point 39°F).

Open the windows?

Today, 12:00 PM–7:00 PM

Good stretch to open the windows.

Is this typical?

LIMA WWTP · official normals 1991–2020 · records 1901–2026

Oct 24, today vs a typical year

Today’s expected high is 9°5° warmer than typical.

Last 7 days vs normal

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

St. Johns 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 29 min less
Golden hour: 6:05–7:00 PM; Morning 7:40–8:35 AM
Blue hour: 7:00–7:10 PM; Morning 7:29–7:40 AM; first light 7:29 AM

Stars tonight? Fair

Mostly clear 11 PM–7:30 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

97% lit · growing

Today: sets 6:10 AM · rises 5:40 PM
Full moon: Oct 26
New moon: Nov 9

Looking west from St. Johns. 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

St. Johns, OH weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Great Miami River at Sidney

Ottawa River at Lima

Bokengahalas Creek above DeGraff

Loramie Creek near Newport

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