Observed 4:10 PM CDT at KUIN

Mendon, IL weather

Sunny and 75°24°, 14°8° warmer than a typical Oct 24.

Forecasts agree

Now 75°24°

Sunny

Wind: 10 mph17 km/h; From the southeast. 610–10 mph17 km/h through 4 AM
Dew point: 46°8°; Comfortable
UV tomorrow: 4Moderate; Moderate 11 AM–4 PM · peak 4
Pressure: 30.29 inHg1026 hPa; Falling 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

Low 53°12° tomorrow at 6 AM
Above 60°16° tomorrow by 10 AM
Below 70°21° tomorrow night after 7 PM

This afternoonNear 76°24° · Clear
TonightDown to 54°12° by 4 AM · Partly cloudy
Tomorrow morningUp to 68°20° by 11 AM · Mostly cloudy
Tomorrow afternoonUp to 77°25° by 3 PM · Mostly cloudy
Tomorrow nightDown to 55°13° by 5 AM · Mostly cloudy
Monday morningUp to 68°20° by 11 AM · Mostly cloudy
Monday afternoonUp to 76°24° by 3 PM · 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 4p	Sunny	76°24° (likely 73°23° to 77°25°)	76°24°	0%	8 mph13 km/h from S, gusts 12 mph19 km/h	34%	0%	1
Sat 5p	Sunny	75°24° (likely 71°22° to 76°24°)	75°24°	0%	7 mph11 km/h from SE, gusts 13 mph21 km/h	36%	0%	1
Sat 6p	Clear	71°22° (likely 67°19° to 71°22°)	71°22°	0%	7 mph11 km/h from SE, gusts 11 mph17 km/h	41%	1%	0
Sat 7p	Clear	66°19° (likely 65°18° to 67°19°)	66°19°	0%	7 mph11 km/h from SE, gusts 11 mph18 km/h	48%	3%	0
Sat 8p	Clear	63°17° (likely 63°17° to 65°18°)	63°17°	0%	7 mph11 km/h from SE, gusts 12 mph19 km/h	54%	24%	0
Sat 9p	Mostly clear	62°17° (likely 61°16° to 64°18°)	62°17°	0%	7 mph11 km/h from SE, gusts 12 mph19 km/h	56%	45%	0
Sat 10p	Mostly clear	61°16° (likely 60°16° to 63°17°)	61°16°	0%	7 mph11 km/h from SE, gusts 12 mph19 km/h	58%	35%	0
Sat 11p	Mostly clear	60°16° (likely 58°14° to 62°17°)	60°16°	0%	7 mph11 km/h from S, gusts 14 mph23 km/h	60%	23%	0
Sun 12a	Mostly clear	59°15° (likely 57°14° to 61°16°)	59°15°	0%	6 mph10 km/h from S, gusts 14 mph23 km/h	62%	15%	0
Sun 1a	Partly cloudy	57°14° (likely 56°13° to 61°16°)	57°14°	0%	6 mph10 km/h from S, gusts 14 mph22 km/h	64%	44%	0
Sun 2a	Partly cloudy	56°13° (likely 55°13° to 60°16°)	56°13°	0%	6 mph10 km/h from S, gusts 14 mph22 km/h	66%	52%	0
Sun 3a	Cloudy	55°13° (likely 54°12° to 59°15°)	55°13°	0%	6 mph10 km/h from S, gusts 13 mph20 km/h	69%	69%	0
Sun 4a	Partly cloudy	54°12° (likely 53°12° to 59°15°)	54°12°	0%	6 mph10 km/h from S, gusts 12 mph20 km/h	71%	60%	0
Sun 5a	Partly cloudy	54°12° (likely 52°11° to 58°14°)	54°12°	0%	5 mph8 km/h from S, gusts 11 mph18 km/h	71%	74%	0
Sun 6a	Cloudy	53°12° (likely 51°11° to 58°14°)	53°12°	0%	5 mph8 km/h from S, gusts 10 mph17 km/h	74%	77%	0
Sun 7a	Partly sunny	53°12° (likely 51°11° to 57°14°)	53°12°	0%	5 mph8 km/h from S, gusts 10 mph16 km/h	74%	66%	0
Sun 8a	Cloudy	53°12° (likely 51°11° to 57°14°)	53°12°	0%	5 mph8 km/h from S, gusts 10 mph16 km/h	77%	80%	0
Sun 9a	Partly sunny	58°14° (likely 56°13° to 61°16°)	58°14°	0%	5 mph8 km/h from S, gusts 9 mph14 km/h	69%	76%	1
Sun 10a	Partly sunny	64°18° (likely 62°17° to 66°19°)	64°18°	0%	5 mph8 km/h from S, gusts 10 mph17 km/h	58%	62%	2
Sun 11a	Cloudy	68°20° (likely 66°19° to 70°21°)	68°20°	0%	7 mph11 km/h from S, gusts 10 mph15 km/h	51%	73%	3
Sun 12p	Cloudy	72°22° (likely 70°21° to 73°23°)	72°22°	0%	6 mph10 km/h from S, gusts 8 mph13 km/h	44%	69%	3
Sun 1p	Cloudy	74°23° (likely 73°23° to 76°24°)	74°23°	0%	6 mph10 km/h from S, gusts 7 mph11 km/h	41%	80%	4
Sun 2p	Cloudy	76°24° (likely 75°24° to 79°26°)	76°24°	0%	6 mph10 km/h from S, gusts 7 mph11 km/h	39%	81%	4
Sun 3p	Cloudy	77°25° (likely 75°24° to 79°26°)	77°25°	0%	6 mph10 km/h from S, gusts 7 mph12 km/h	37%	83%	3
Sun 4p	Cloudy	77°25° (likely 75°24° to 79°26°)	77°25°	0%	5 mph8 km/h from S, gusts 7 mph12 km/h	37%	83%	2
Sun 5p	Cloudy	76°24° (likely 73°23° to 78°26°)	76°24°	0%	3 mph5 km/h from S, gusts 7 mph11 km/h	40%	82%	1
Sun 6p	Cloudy	72°22° (likely 68°20° to 73°23°)	72°22°	0%	3 mph5 km/h from SE, gusts 7 mph11 km/h	44%	78%	0
Sun 7p	Cloudy	67°19° (likely 66°19° to 70°21°)	67°19°	0%	3 mph5 km/h from SE, gusts 6 mph9 km/h	54%	80%	0
Sun 8p	Cloudy	64°18° (likely 64°18° to 68°20°)	64°18°	0%	3 mph5 km/h from SE, gusts 10 mph16 km/h	58%	80%	0
Sun 9p	Cloudy	63°17° (likely 61°16° to 67°19°)	63°17°	0%	3 mph5 km/h from SE, gusts 11 mph17 km/h	60%	81%	0
Sun 10p	Cloudy	62°17° (likely 61°16° to 66°19°)	62°17°	0%	3 mph5 km/h from SE, gusts 11 mph17 km/h	62%	82%	0
Sun 11p	Cloudy	60°16° (likely 60°16° to 65°18°)	60°16°	0%	3 mph5 km/h from S, gusts 10 mph16 km/h	64%	83%	0
Mon 12a	Cloudy	59°15° (likely 59°15° to 64°18°)	59°15°	0%	3 mph5 km/h from S, gusts 10 mph16 km/h	67%	83%	0
Mon 1a	Cloudy	58°14° (likely 58°14° to 63°17°)	58°14°	0%	3 mph5 km/h from S, gusts 10 mph16 km/h	69%	83%	0
Mon 2a	Cloudy	57°14° (likely 57°14° to 63°17°)	57°14°	0%	3 mph5 km/h from S, gusts 11 mph17 km/h	72%	84%	0
Mon 3a	Cloudy	56°13° (likely 56°13° to 62°17°)	56°13°	0%	3 mph5 km/h from S, gusts 11 mph17 km/h	74%	86%	0
Mon 4a	Cloudy	56°13° (likely 56°13° to 62°17°)	56°13°	0%	3 mph5 km/h from S, gusts 10 mph16 km/h	72%	87%	0
Mon 5a	Cloudy	55°13° (likely 55°13° to 61°16°)	55°13°	0%	3 mph5 km/h from S, gusts 10 mph17 km/h	74%	85%	0
Mon 6a	Cloudy	55°13° (likely 55°13° to 59°15°)	55°13°	0%	3 mph5 km/h from S, gusts 9 mph15 km/h	74%	84%	0
Mon 7a	Cloudy	54°12° (likely 54°12° to 58°14°)	54°12°	0%	3 mph5 km/h from S, gusts 9 mph15 km/h	80%	82%	0
Mon 8a	Cloudy	54°12° (likely 54°12° to 58°14°)	54°12°	0%	2 mph3 km/h from S, gusts 9 mph14 km/h	83%	80%	0
Mon 9a	Cloudy	58°14° (likely 58°14° to 62°17°)	58°14°	0%	2 mph3 km/h from S, gusts 9 mph14 km/h	72%	80%	1
Mon 10a	Cloudy	64°18° (likely 63°17° to 66°19°)	64°18°	0%	2 mph3 km/h from S, gusts 10 mph16 km/h	63%	80%	1
Mon 11a	Cloudy	68°20° (likely 67°19° to 70°21°)	68°20°	0%	2 mph3 km/h from S, gusts 10 mph15 km/h	55%	82%	2
Mon 12p	Cloudy	71°22° (likely 69°21° to 72°22°)	71°22°	0%	3 mph5 km/h from S, gusts 8 mph13 km/h	49%	84%	3
Mon 1p	Cloudy	73°23° (likely 72°22° to 75°24°)	73°23°	0%	3 mph5 km/h from S, gusts 7 mph12 km/h	46%	88%	4
Mon 2p	Cloudy	75°24° (likely 73°23° to 75°24°)	75°24°	0%	3 mph5 km/h from S, gusts 7 mph12 km/h	43%	87%	4
Mon 3p	Mostly cloudy	76°24° (likely 74°23° to 76°24°)	76°24°	0%	5 mph8 km/h from S, gusts 8 mph13 km/h	40%	68%	3

Days ahead

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

Today, Oct 24. Cloudy. High 76°24°, low 53°12°. Typical 62°17° / 42°6°. Dry. Forecasts agree.
1. Afternoon
  noon–6 PM
  Sunny, 76°24°
  Dry
2. Evening
  6 PM–midnight
  Mostly clear, 63°17°
  Dry
3. Overnight
  midnight–6 AM
  Cloudy, 54°12°
  Dry
Official NWS forecast
Today: Sunny, with a high near 76. Southeast wind around 8 mph.
Tonight: Partly cloudy, with a low around 53. Southeast wind around 7 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
75°24°–77°25°
Low, likely
52°11°–54°12°
Typical high / low
62°17° / 42°6°
Wind
11 mph17 km/h, gusts 21 mph33 km/h
UV peak
4
Tomorrow, Oct 25. Cloudy. High 77°25°, low 54°12°. Typical 61°16° / 42°6°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Partly sunny, 53°12°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 77°25°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 64°18°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 55°13°
  Dry
Official NWS forecast
Day: Partly sunny, with a high near 77. South wind 3 to 7 mph.
Night: Mostly cloudy, with a low around 54. Southeast wind around 3 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
75°24°–79°26°
Low, likely
51°11°–57°14°
Typical high / low
61°16° / 42°6°
Wind
12 mph19 km/h, gusts 21 mph34 km/h
UV peak
4
Monday, Oct 26. Cloudy. High 76°24°, low 55°13°. Typical 61°16° / 41°5°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Cloudy, 54°12°
  Dry
2. Afternoon
  noon–6 PM
  Mostly cloudy, 76°24°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 63°17°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 56°13°
  Dry
Official NWS forecast
Day: Partly sunny, with a high near 76. South wind around 5 mph.
Night: Partly cloudy, with a low around 55.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
74°23°–76°24°
Low, likely
54°12°–57°14°
Typical high / low
61°16° / 41°5°
Wind
10 mph16 km/h, gusts 17 mph27 km/h
UV peak
4
Tuesday, Oct 27. Mostly cloudy. High 75°24°, low 57°14°. Typical 60°16° / 41°5°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Cloudy, 57°14°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 71°22°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 64°18°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 57°14°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly cloudy, with a high near 75.
Night: Mostly cloudy, with a low around 57.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
70°21°–75°24°
Low, likely
55°13°–57°14°
Typical high / low
60°16° / 41°5°
Wind
11 mph17 km/h, gusts 24 mph39 km/h
UV peak
3
Wednesday, Oct 28. Partly sunny. High 79°26°, low 58°14°. Typical 60°16° / 40°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 58°14°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 75°24°
  Dry
3. Evening
  6 PM–midnight
  Clear, 67°19°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 61°16°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 79.
Night: Mostly clear, with a low around 58.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
74°23°–79°26°
Low, likely
55°13°–58°14°
Typical high / low
60°16° / 40°4°
Wind
15 mph24 km/h, gusts 26 mph42 km/h
UV peak
4
Thursday, Oct 29. Partly sunny. High 79°26°, low 60°16°. Typical 59°15° / 40°4°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Mostly sunny, 61°16°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 77°25°
  Dry
3. Evening
  6 PM–midnight
  Drizzle, 67°20°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 62°17°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 79.
Night: Partly cloudy, with a low around 60.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
76°24°–79°26°
Low, likely
59°15°–60°16°
Typical high / low
59°15° / 40°4°
Wind
12 mph19 km/h, gusts 31 mph50 km/h
UV peak
3
Friday, Oct 30. Partly sunny. High 79°26°, low 61°16°. Typical 59°15° / 40°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Partly sunny, 62°17°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 78°25°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 70°21°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 63°17°
  30% chance
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 79.
Night: Mostly cloudy, with a low around 61.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
75°24°–80°27°
Low, likely
58°14°–62°17°
Typical high / low
59°15° / 40°4°
Wind
14 mph22 km/h, gusts 23 mph37 km/h
UV peak
3
Saturday, Oct 31. Rain. High 69°21°, low 59°15°. Typical 58°14° / 39°4°. Rain 0.22 in5.6 mm, 60% chance. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 62°17°
  40% chance
2. Afternoon
  noon–6 PM
  Drizzle, 70°21°
  50% chance · 0.05 in1.2 mm
3. Evening
  6 PM–midnight
  Drizzle, 59°15°
  50% chance · 0.14 in3.6 mm
4. Overnight
  midnight–6 AM
  Drizzle, 61°16°
  50% chance · 0.17 in4.3 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
65°18°–72°22°
Low, likely
58°14°–60°16°
Typical high / low
58°14° / 39°4°
Wind
23 mph37 km/h, gusts 30 mph49 km/h
Sunday, Nov 1. Drizzle. High 69°21°, low 55°13°. Typical 58°14° / 39°4°. Rain 0.62 in16 mm, 50% chance. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 62°17°
  40% chance · 0.13 in3.4 mm
2. Afternoon
  noon–6 PM
  Drizzle, 68°20°
  40% chance · 0.15 in3.8 mm
3. Evening
  6 PM–midnight
  Drizzle, 59°15°
  40% chance · 0.2 in5.1 mm
4. Overnight
  midnight–6 AM
  Drizzle, 50°10°
  40% chance · 0.04 in1 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
64°18°–71°22°
Low, likely
49°9°–61°16°
Typical high / low
58°14° / 39°4°
Wind
21 mph34 km/h, gusts 34 mph54 km/h
UV peak
2
Monday, Nov 2. Drizzle. High 62°17°, low 50°10°. Typical 57°14° / 38°3°. Rain 0.35 in8.9 mm, 40% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Drizzle, 51°11°
  40% chance · 0.07 in1.8 mm
2. Afternoon
  noon–6 PM
  Drizzle, 58°15°
  30% chance · 0.13 in3.3 mm
3. Evening
  6 PM–midnight
  Drizzle, 52°11°
  30% chance · 0.03 in0.9 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
50°10°–79°26°
Low, likely
39°4°–64°18°
Typical high / low
57°14° / 38°3°
Wind
25 mph40 km/h, gusts 44 mph71 km/h

10 days15 days30 days

The outlook

Today
Dry, high 76°, low 53°.
Tomorrow
Dry, high 77°, low 54°.
Monday
Dry, high 76°, low 55°.
Rest of week
Highs 62–79°; chance of precipitation on Saturday, Sunday, Monday.

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

Mississippi River at LaGrange

12 mi

Below flood stage

Level: 7.5 ft
Flow: 1,430 cfs

Forecast peak 7.6 ft Sat 7 PM

Reading from Sat 3 PM · NWS gauge page

Mississippi River at Canton Lock and Dam 20

13 mi

Below flood stage

Level: 6.1 ft
Flow: 79,700 cfs

Forecast peak 6.1 ft Sat 7 PM

Reading from Sat 4 PM · NWS gauge page

Mississippi River at Quincy

13 mi

Below flood stage

Level: 11.2 ft
Flow: 46,700 cfs

Forecast peak 11.4 ft Sun 7 PM

Reading from Sat 3:15 PM · NWS gauge page

Mississippi River at Quincy Lock and Dam 21

15 mi

Below flood stage

Level: 6.7 ft
Flow: 81,100 cfs

Forecast peak 6.9 ft Sat 7 PM

Reading from Sat 3:30 PM · NWS gauge page

For your home

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

Heating this week

About 91% less heating than a typical week.

This week 9Typical 101

Heating degree days, base 65°F

Comfort

Dry air outside (dew point 46°F).

Open the windows?

Today, 5:00 PM–11:00 PM

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

Is this typical?

Quincy Regional Airport · official normals 1991–2020 · records 1901–2026

Oct 24, today vs a typical year

Today’s expected high is 14°8° warmer than typical.

Last 7 days vs normal

On average 6°3° warmer than normal (daily mean temperature).

±0°SunOct 18
+2°+1°MonOct 19
+3°+2°TueOct 20
+8°+4°WedOct 21
+10°+5°ThuOct 22
+12°+7°FriOct 23
—SatOct 24

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

Sun & moon

Sun

Daylight: 10 h 47 min; Losing 2 min 25 s a day; shortest Dec 21, 1 h 28 min less
Golden hour: 5:34–6:29 PM; Morning 7:08–8:03 AM
Blue hour: 6:29–6:40 PM; Morning 6:57–7:08 AM; first light 6:57 AM

Stars tonight? Fair

Mostly clear 6:40–9 PM, but the moon is 99% lit and up.

Moon

Waxing gibbous

98% lit · growing

Today: sets 5:40 AM · rises 5:10 PM
Full moon: Oct 25
New moon: Nov 9

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

Mendon, IL weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Mississippi River at LaGrange

Mississippi River at Canton Lock and Dam 20

Mississippi River at Quincy

Mississippi River at Quincy Lock and Dam 21

For your home

Heating this week

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