Observed 3:10 AM CDT at KMVN

Mount Vernon, IL weather

Clear and 43°6°, 12°7° warmer than a typical Oct 24.

Mostly agree

Now 43°6°

Clear

Wind: Calm; Light through 3 PM
Dew point: 41°5°; Comfortable
Humidity: 93%; Air 43°6°, dew point 41°5° · fog or dew likely
UV index: 0Low; Moderate 11 AM–4 PM · peak 4
Pressure: 30.31 inHg1026 hPa; Steady over the last 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

Good hours for

Above 60°16° today by 10 AM
High 75°24° today at 4 PM
Drops 12°7° tonight 6–9 PM (71°22° → 59°15°)
Below 60°16° tonight after 8 PM
Drops 12°7° tomorrow night 6–9 PM (73°23° → 61°16°)

TonightNear 45°7° · Clear
This morningUp to 64°18° by 11 AM · Clear
This afternoonUp to 75°24° by 4 PM · Partly cloudy
TonightDown to 48°9° by 5 AM · Partly cloudy
Tomorrow morningUp to 68°20° by 11 AM · Partly cloudy
Tomorrow afternoonUp to 78°26° by 4 PM · Mostly cloudy
Tomorrow nightDown to 52°11° by 2 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 3a	Mostly clear	44°7° (likely 44°7° to 52°11°)	44°7°	0%	1 mph2 km/h from NE, gusts 6 mph10 km/h	100%	25%	0
Sat 4a	Mostly clear	45°7° (likely 45°7° to 51°11°)	45°7°	0%	1 mph2 km/h from ENE, gusts 6 mph10 km/h	96%	30%	0
Sat 5a	Mostly clear	45°7° (likely 45°7° to 50°10°)	45°7°	0%	1 mph2 km/h from E, gusts 6 mph10 km/h	96%	19%	0
Sat 6a	Mostly clear	45°7° (likely 45°7° to 49°9°)	45°7°	0%	1 mph2 km/h from E, gusts 5 mph9 km/h	96%	14%	0
Sat 7a	Mostly sunny	45°7° (likely 44°7° to 49°9°)	45°7°	0%	1 mph2 km/h from ENE, gusts 6 mph9 km/h	93%	24%	0
Sat 8a	Mostly sunny	46°8° (likely 45°7° to 51°11°)	46°8°	0%	1 mph2 km/h from E, gusts 7 mph11 km/h	96%	14%	0
Sat 9a	Mostly sunny	52°11° (likely 52°11° to 56°13°)	52°11°	0%	2 mph3 km/h from E, gusts 7 mph11 km/h	83%	35%	1
Sat 10a	Sunny	60°16° (likely 59°15° to 61°16°)	60°16°	0%	3 mph5 km/h from ESE, gusts 9 mph14 km/h	60%	28%	2
Sat 11a	Sunny	64°18° (likely 64°18° to 66°19°)	64°18°	0%	3 mph5 km/h from ESE, gusts 8 mph13 km/h	52%	24%	3
Sat 12p	Partly sunny	69°21° (likely 68°20° to 70°21°)	69°21°	0%	3 mph5 km/h from ESE, gusts 7 mph11 km/h	42%	15%	4
Sat 1p	Partly sunny	72°22° (likely 71°22° to 73°23°)	72°22°	0%	3 mph5 km/h from ESE, gusts 7 mph11 km/h	37%	24%	4
Sat 2p	Partly sunny	73°23° (likely 72°22° to 75°24°)	73°23°	0%	3 mph5 km/h from E, gusts 6 mph10 km/h	33%	51%	4
Sat 3p	Cloudy	74°23° (likely 73°23° to 75°24°)	74°23°	0%	3 mph5 km/h from E, gusts 7 mph11 km/h	30%	66%	4
Sat 4p	Mostly sunny	75°24° (likely 72°22° to 75°24°)	75°24°	0%	3 mph5 km/h from E, gusts 7 mph11 km/h	29%	33%	2
Sat 5p	Mostly sunny	74°23° (likely 70°21° to 74°23°)	74°23°	0%	3 mph5 km/h from E, gusts 8 mph13 km/h	32%	44%	1
Sat 6p	Mostly clear	71°22° (likely 65°18° to 71°22°)	71°22°	0%	2 mph3 km/h from E, gusts 6 mph9 km/h	36%	45%	0
Sat 7p	Cloudy	65°18° (likely 61°16° to 65°18°)	65°18°	0%	2 mph3 km/h from E, gusts 7 mph11 km/h	46%	60%	0
Sat 8p	Mostly clear	59°15° (likely 58°14° to 61°16°)	59°15°	0%	1 mph2 km/h from E, gusts 7 mph12 km/h	60%	45%	0
Sat 9p	Mostly clear	56°13° (likely 56°13° to 59°15°)	56°13°	0%	1 mph2 km/h from E, gusts 7 mph11 km/h	69%	47%	0
Sat 10p	Mostly clear	54°12° (likely 54°12° to 58°14°)	54°12°	0%	1 mph2 km/h from E, gusts 7 mph11 km/h	71%	43%	0
Sat 11p	Clear	53°12° (likely 53°12° to 57°14°)	53°12°	0%	0 mph0 km/h, gusts 7 mph11 km/h	74%	40%	0
Sun 12a	Clear	52°11° (likely 52°11° to 55°13°)	52°11°	0%	0 mph0 km/h, gusts 6 mph10 km/h	77%	41%	0
Sun 1a	Clear	51°11° (likely 50°10° to 55°13°)	51°11°	0%	0 mph0 km/h, gusts 6 mph10 km/h	80%	41%	0
Sun 2a	Clear	50°10° (likely 50°10° to 54°12°)	50°10°	0%	0 mph0 km/h, gusts 6 mph10 km/h	83%	34%	0
Sun 3a	Partly cloudy	50°10° (likely 49°9° to 53°12°)	50°10°	0%	0 mph0 km/h, gusts 6 mph10 km/h	83%	57%	0
Sun 4a	Mostly clear	49°9° (likely 48°9° to 52°11°)	49°9°	0%	0 mph0 km/h, gusts 6 mph9 km/h	86%	57%	0
Sun 5a	Mostly clear	48°9° (likely 47°8° to 51°11°)	48°9°	0%	0 mph0 km/h, gusts 5 mph7 km/h	89%	43%	0
Sun 6a	Mostly clear	47°8° (likely 46°8° to 50°10°)	47°8°	0%	0 mph0 km/h, gusts 4 mph6 km/h	93%	45%	0
Sun 7a	Partly sunny	47°8° (likely 46°8° to 50°10°)	47°8°	0%	0 mph0 km/h, gusts 4 mph6 km/h	89%	51%	0
Sun 8a	Partly sunny	49°9° (likely 47°8° to 52°11°)	49°9°	0%	0 mph0 km/h, gusts 4 mph6 km/h	89%	51%	0
Sun 9a	Partly sunny	55°13° (likely 54°12° to 57°14°)	55°13°	0%	0 mph0 km/h, gusts 3 mph5 km/h	77%	49%	1
Sun 10a	Sunny	63°17° (likely 60°16° to 64°18°)	63°17°	0%	0 mph0 km/h, gusts 6 mph9 km/h	58%	43%	2
Sun 11a	Partly sunny	68°20° (likely 66°19° to 69°21°)	68°20°	0%	0 mph0 km/h, gusts 5 mph8 km/h	49%	48%	3
Sun 12p	Partly sunny	72°22° (likely 70°21° to 73°23°)	72°22°	0%	1 mph2 km/h from S, gusts 4 mph6 km/h	43%	56%	4
Sun 1p	Cloudy	76°24° (likely 73°23° to 76°24°)	76°24°	0%	1 mph2 km/h from SSW, gusts 3 mph5 km/h	36%	77%	4
Sun 2p	Cloudy	77°25° (likely 75°24° to 77°25°)	77°25°	0%	1 mph2 km/h from S, gusts 3 mph4 km/h	33%	77%	4
Sun 3p	Cloudy	77°25° (likely 75°24° to 77°25°)	77°25°	0%	1 mph2 km/h from S, gusts 3 mph5 km/h	32%	79%	3
Sun 4p	Cloudy	78°26° (likely 75°24° to 78°26°)	78°26°	0%	1 mph2 km/h from S, gusts 3 mph5 km/h	31%	64%	2
Sun 5p	Cloudy	76°24° (likely 73°23° to 76°24°)	76°24°	0%	0 mph0 km/h, gusts 4 mph6 km/h	34%	71%	1
Sun 6p	Cloudy	73°23° (likely 68°20° to 73°23°)	73°23°	0%	0 mph0 km/h, gusts 4 mph6 km/h	40%	69%	0
Sun 7p	Cloudy	68°20° (likely 65°18° to 68°20°)	68°20°	0%	0 mph0 km/h, gusts 4 mph7 km/h	47%	72%	0
Sun 8p	Cloudy	61°16° (likely 61°16° to 63°17°)	61°16°	0%	0 mph0 km/h, gusts 5 mph8 km/h	62%	86%	0
Sun 9p	Cloudy	58°14° (likely 58°14° to 62°17°)	58°14°	0%	0 mph0 km/h, gusts 5 mph8 km/h	69%	82%	0
Sun 10p	Cloudy	57°14° (likely 57°14° to 60°16°)	57°14°	0%	0 mph0 km/h, gusts 6 mph10 km/h	75%	84%	0
Sun 11p	Cloudy	55°13° (likely 55°13° to 59°15°)	55°13°	0%	0 mph0 km/h, gusts 6 mph9 km/h	80%	70%	0
Mon 12a	Cloudy	54°12° (likely 54°12° to 58°14°)	54°12°	0%	0 mph0 km/h, gusts 5 mph8 km/h	80%	73%	0
Mon 1a	Cloudy	53°12° (likely 53°12° to 58°14°)	53°12°	0%	0 mph0 km/h, gusts 4 mph7 km/h	83%	72%	0
Mon 2a	Mostly cloudy	52°11° (likely 52°11° to 60°16°)	52°11°	0%	0 mph0 km/h, gusts 3 mph5 km/h	86%	66%	0

Days ahead

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

Today, Oct 24. Mostly sunny. High 76°24°, low 43°6°. Typical 64°18° / 42°6°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Mostly sunny, 46°8°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 75°24°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 59°15°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 48°9°
  Dry
Official NWS forecast
Today: Sunny. High near 76, with temperatures falling to around 74 in the afternoon. East wind around 3 mph.
Tonight: Mostly clear. Low around 43, with temperatures rising to around 45 overnight. East northeast wind around 1 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
73°23°–76°24°
Low, likely
43°6°–49°9°
Typical high / low
64°18° / 42°6°
Wind
6 mph10 km/h, gusts 13 mph21 km/h
UV peak
4
Tomorrow, Oct 25. Cloudy. High 79°26°, low 48°9°. Typical 64°18° / 41°5°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Partly sunny, 49°9°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 78°26°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 61°16°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 52°11°
  Dry
Official NWS forecast
Day: Mostly sunny, with a high near 79. South southwest wind around 1 mph.
Night: Mostly cloudy, with a low around 48. Wind around 0 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
75°24°–79°26°
Low, likely
46°8°–50°10°
Typical high / low
64°18° / 41°5°
Wind
6 mph9 km/h
UV peak
4
Monday, Oct 26. Cloudy. High 77°25°, low 50°10°. Typical 63°17° / 41°5°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 54°12°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 76°24°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 62°17°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 52°11°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 77. West southwest wind around 2 mph.
Night: Partly cloudy, with a low around 50. Wind around 0 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
74°23°–77°25°
Low, likely
50°10°–55°13°
Typical high / low
63°17° / 41°5°
Wind
6 mph10 km/h, gusts 13 mph21 km/h
UV peak
4
Tuesday, Oct 27. Cloudy. High 76°24°, low 51°11°. Typical 63°17° / 41°5°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 55°13°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 74°23°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 63°17°
  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 76. South southeast wind 0 to 3 mph.
Night: Mostly cloudy, with a low around 51. East southeast wind around 2 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
72°22°–76°24°
Low, likely
48°9°–56°13°
Typical high / low
63°17° / 41°5°
Wind
7 mph11 km/h, gusts 20 mph33 km/h
UV peak
4
Wednesday, Oct 28. Cloudy. High 79°26°, low 52°11°. Typical 62°17° / 40°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 56°13°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 76°24°
  Dry
3. Evening
  6 PM–midnight
  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: Mostly sunny, with a high near 79. South southwest wind 0 to 9 mph.
Night: Mostly clear, with a low around 52. South wind 2 to 6 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
74°23°–79°26°
Low, likely
52°11°–54°12°
Typical high / low
62°17° / 40°4°
Wind
10 mph15 km/h, gusts 20 mph32 km/h
UV peak
4
Thursday, Oct 29. Mostly sunny. High 78°26°, low 50°10°. Typical 62°17° / 40°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 55°13°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 77°25°
  Dry
3. Evening
  6 PM–midnight
  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 78. South southwest wind 2 to 7 mph.
Night: Partly cloudy, with a low around 50. South wind 0 to 3 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
75°24°–79°26°
Low, likely
50°10°–56°13°
Typical high / low
62°17° / 40°4°
Wind
12 mph20 km/h, gusts 25 mph40 km/h
UV peak
4
Friday, Oct 30. Cloudy. High 77°25°, low 53°12°. Typical 61°16° / 40°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Partly sunny, 56°14°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 79°26°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 65°19°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 59°15°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 77. South wind 1 to 6 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
76°24°–80°27°
Low, likely
50°10°–56°13°
Typical high / low
61°16° / 40°4°
Wind
9 mph14 km/h, gusts 16 mph26 km/h
UV peak
4
Saturday, Oct 31. Cloudy. High 75°24°, low 61°16°. Typical 61°16° / 39°4°. Rain 0.08 in2 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Partly sunny, 63°17°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 76°25°
  20% chance
3. Evening
  6 PM–midnight
  Drizzle, 69°21°
  30% chance
4. Overnight
  midnight–6 AM
  Drizzle, 65°18°
  40% chance · 0.01 in0.3 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.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
71°22°–79°26°
Low, likely
57°14°–63°17°
Typical high / low
61°16° / 39°4°
Wind
13 mph21 km/h, gusts 24 mph39 km/h
UV peak
2
Sunday, Nov 1. Drizzle. High 72°22°, low 64°18°. Typical 60°16° / 39°4°. Rain 0.31 in7.9 mm, 40% chance. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 65°18°
  40% chance · 0.04 in1.1 mm
2. Afternoon
  noon–6 PM
  Drizzle, 71°22°
  40% chance · 0.1 in2.6 mm
3. Evening
  6 PM–midnight
  Drizzle, 67°19°
  40% chance · 0.25 in6.2 mm
4. Overnight
  midnight–6 AM
  Cloudy, 61°16°
  40% chance · 0.18 in4.5 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
69°21°–76°24°
Low, likely
62°17°–67°19°
Typical high / low
60°16° / 39°4°
Wind
23 mph37 km/h, gusts 38 mph61 km/h
UV peak
2
Monday, Nov 2. Cloudy. High 69°21°, low 57°14°. Typical 60°16° / 39°4°. Rain 0.43 in11 mm, 40% chance. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 62°16°
  30% chance · 0.14 in3.7 mm
2. Afternoon
  noon–6 PM
  Cloudy, 65°18°
  30% chance · 0.15 in3.9 mm
3. Evening
  6 PM–midnight
  Cloudy, 56°13°
  Dry
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
67°19°–72°22°
Low, likely
52°11°–61°16°
Typical high / low
60°16° / 39°4°
Wind
16 mph26 km/h, gusts 36 mph58 km/h
UV peak
3

10 days15 days30 days

The outlook

Today
Dry, high 76°, low 43°.
Tomorrow
Dry, high 79°, low 48°, warming up.
Monday
Dry, high 77°, low 50°.
Rest of week
Mostly dry, highs 69–79°.

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

Casey Fork above Mount Vernon

3.2 mi

Level: 1.6 ft
Flow: 3 cfs

Reading from Sat 2 AM · NWS gauge page

Big Muddy River above Mount Vernon

3.9 mi

Level: 0.2 ft

Reading from Sat 2 AM · NWS gauge page

Rayse Creek above Waltonville

7.9 mi

Level: 1.3 ft
Flow: under 1 cfs

Reading from Sat 1:30 AM · NWS gauge page

Casey Fork Subimpoundment near Bonnie

8.8 mi

Level: 10.7 ft

Reading from Sat 2 AM · NWS gauge page

For your home

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

Heating this week

About 83% less heating than a typical week.

This week 16Typical 93

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 7
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 41°F).

Open the windows?

Today, 10:00 AM–7:00 PM

Good stretch to open the windows (air quality forecast not available for part of this window).

Is this typical?

MT VERNON 3 NE · official normals 1991–2020 · records 1895–2026

Oct 24, today vs a typical year

Today’s expected high is 12°7° warmer than typical.

Last 7 days vs normal

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

−9°−5°SunOct 18
—MonOct 19
±0°TueOct 20
+3°+2°WedOct 21
+5°+3°ThuOct 22
+7°+4°FriOct 23
—SatOct 24

Mount Vernon weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 10 h 52 min; Losing 2 min 21 s a day; shortest Dec 21, 1 h 22 min less
Golden hour: 5:28–6:22 PM; Morning 6:57–7:50 AM
Blue hour: 6:22–6:32 PM; Morning 6:46–6:57 AM; first light 6:46 AM

Stars tonight? Good

Mostly clear 5–6:46 AM; moon 96% lit but below the horizon.

Moon

Waxing gibbous

96% lit · growing

Today: sets 5:28 AM · rises 5:02 PM
Full moon: Oct 25
New moon: Nov 9

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

Mount Vernon, IL weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Casey Fork above Mount Vernon

Big Muddy River above Mount Vernon

Rayse Creek above Waltonville

Casey Fork Subimpoundment near Bonnie

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? Good

Moon