Observed 9:25 AM CDT at KSUS

Defiance, MO weather

Sunny and 55°13°, 11°6° warmer than a typical Oct 24.

Mostly agree

Now 55°13°

Sunny

Wind: Calm; Light through 9 PM
Dew point: 50°10°; Comfortable
UV index: 0Low; Moderate 11 AM–4 PM · peak 4
Air quality: 63Moderate; Main pollutant: PM2.5 (fine particles)
Pressure: 30.37 inHg1028 hPa; Rising slowly · +0.02 inHg+0.5 hPa in 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

About the same as this time yesterday (52°11° then, 52°11° now)

Good hours for

Above 70°21° today by noon
High 77°25° today at 4 PM
Drops 12°7° tonight 6–9 PM (72°22° → 60°16°)
Below 60°16° tonight after 9 PM
Drops 12°7° tomorrow night 6–9 PM (74°23° → 62°17°)

This morningUp to 67°19° by 11 AM · Partly cloudy
This afternoonUp to 77°25° by 4 PM · Mostly cloudy
TonightDown to 49°9° by 5 AM · Partly cloudy
Tomorrow morningUp to 69°21° by 11 AM · Mostly cloudy
Tomorrow afternoonUp to 79°26° by 4 PM · Mostly cloudy
Tomorrow nightDown to 51°11° by 5 AM · Mostly cloudy
Monday morningUp to 54°12° by 8 AM · 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	Partly sunny	54°12° (likely 53°12° to 55°13°)	54°12°	0%	1 mph2 km/h from SE, gusts 3 mph5 km/h	83%	54%	0
Sat 10a	Cloudy	62°17° (likely 59°15° to 63°17°)	62°17°	0%	2 mph3 km/h from S, gusts 7 mph11 km/h	67%	68%	1
Sat 11a	Partly sunny	67°19° (likely 64°18° to 68°20°)	67°19°	0%	2 mph3 km/h from S, gusts 8 mph13 km/h	56%	53%	3
Sat 12p	Cloudy	71°22° (likely 68°20° to 71°22°)	71°22°	0%	2 mph3 km/h from S, gusts 6 mph10 km/h	47%	76%	4
Sat 1p	Cloudy	74°23° (likely 71°22° to 74°23°)	74°23°	0%	2 mph3 km/h from SE, gusts 7 mph11 km/h	43%	79%	4
Sat 2p	Cloudy	75°24° (likely 72°22° to 75°24°)	75°24°	0%	2 mph3 km/h from SE, gusts 7 mph11 km/h	41%	59%	4
Sat 3p	Partly sunny	76°24° (likely 73°23° to 76°24°)	76°24°	0%	2 mph3 km/h from SE, gusts 8 mph12 km/h	40%	66%	3
Sat 4p	Partly sunny	77°25° (likely 72°22° to 77°25°)	77°25°	0%	3 mph5 km/h from SE, gusts 9 mph14 km/h	39%	48%	2
Sat 5p	Partly sunny	75°24° (likely 70°21° to 75°24°)	75°24°	0%	2 mph3 km/h from SE, gusts 8 mph12 km/h	41%	39%	1
Sat 6p	Clear	72°22° (likely 65°18° to 72°22°)	72°22°	0%	2 mph3 km/h from E, gusts 8 mph13 km/h	46%	42%	0
Sat 7p	Clear	67°19° (likely 62°17° to 67°19°)	67°19°	0%	1 mph2 km/h from SE, gusts 8 mph14 km/h	54%	40%	0
Sat 8p	Clear	60°16° (likely 60°16° to 61°16°)	60°16°	0%	1 mph2 km/h from SE, gusts 7 mph11 km/h	67%	41%	0
Sat 9p	Partly cloudy	59°15° (likely 59°15° to 60°16°)	59°15°	0%	1 mph2 km/h from SE, gusts 6 mph10 km/h	69%	43%	0
Sat 10p	Clear	57°14° (likely 57°14° to 59°15°)	57°14°	0%	0 mph0 km/h, gusts 6 mph9 km/h	72%	42%	0
Sat 11p	Partly cloudy	56°13° (likely 56°13° to 58°14°)	56°13°	0%	0 mph0 km/h, gusts 6 mph9 km/h	74%	46%	0
Sun 12a	Partly cloudy	55°13° (likely 55°13° to 57°14°)	55°13°	0%	0 mph0 km/h, gusts 5 mph8 km/h	74%	51%	0
Sun 1a	Cloudy	54°12° (likely 54°12° to 56°13°)	54°12°	0%	0 mph0 km/h, gusts 4 mph7 km/h	77%	56%	0
Sun 2a	Cloudy	52°11° (likely 52°11° to 55°13°)	52°11°	0%	0 mph0 km/h, gusts 4 mph6 km/h	80%	60%	0
Sun 3a	Mostly clear	51°11° (likely 51°11° to 54°12°)	51°11°	0%	0 mph0 km/h, gusts 3 mph5 km/h	83%	60%	0
Sun 4a	Mostly clear	51°11° (likely 50°10° to 53°12°)	51°11°	0%	0 mph0 km/h, gusts 3 mph5 km/h	83%	55%	0
Sun 5a	Cloudy	49°9° (likely 49°9° to 52°11°)	49°9°	0%	0 mph0 km/h, gusts 3 mph4 km/h	86%	72%	0
Sun 6a	Cloudy	49°9° (likely 48°9° to 51°11°)	49°9°	0%	0 mph0 km/h, gusts 3 mph4 km/h	86%	67%	0
Sun 7a	Cloudy	49°9° (likely 48°9° to 51°11°)	49°9°	0%	0 mph0 km/h, gusts 3 mph5 km/h	83%	77%	0
Sun 8a	Cloudy	48°9° (likely 48°9° to 53°12°)	48°9°	0%	0 mph0 km/h, gusts 3 mph5 km/h	93%	79%	0
Sun 9a	Partly sunny	54°12° (likely 53°12° to 57°14°)	54°12°	0%	0 mph0 km/h, gusts 4 mph6 km/h	86%	50%	1
Sun 10a	Partly sunny	63°17° (likely 61°16° to 65°18°)	63°17°	0%	0 mph0 km/h, gusts 8 mph13 km/h	67%	69%	2
Sun 11a	Partly sunny	69°21° (likely 66°19° to 70°21°)	69°21°	0%	1 mph2 km/h from S, gusts 8 mph12 km/h	57%	41%	3
Sun 12p	Cloudy	73°23° (likely 70°21° to 75°24°)	73°23°	0%	1 mph2 km/h from S, gusts 7 mph11 km/h	49%	81%	4
Sun 1p	Cloudy	76°24° (likely 72°22° to 77°25°)	76°24°	0%	1 mph2 km/h from S, gusts 5 mph9 km/h	45%	80%	5
Sun 2p	Cloudy	77°25° (likely 74°23° to 78°26°)	77°25°	0%	1 mph2 km/h from S, gusts 5 mph8 km/h	43%	82%	4
Sun 3p	Cloudy	78°26° (likely 75°24° to 79°26°)	78°26°	0%	1 mph2 km/h from SE, gusts 4 mph7 km/h	40%	82%	3
Sun 4p	Cloudy	79°26° (likely 74°23° to 79°26°)	79°26°	0%	1 mph2 km/h from SE, gusts 5 mph7 km/h	39%	81%	2
Sun 5p	Cloudy	77°25° (likely 72°22° to 78°26°)	77°25°	0%	0 mph0 km/h, gusts 4 mph7 km/h	43%	80%	1
Sun 6p	Cloudy	74°23° (likely 68°20° to 74°23°)	74°23°	0%	0 mph0 km/h, gusts 2 mph4 km/h	48%	80%	0
Sun 7p	Cloudy	69°21° (likely 65°18° to 69°21°)	69°21°	0%	0 mph0 km/h, gusts 4 mph6 km/h	55%	66%	0
Sun 8p	Cloudy	62°17° (likely 62°17° to 65°18°)	62°17°	0%	0 mph0 km/h, gusts 4 mph7 km/h	70%	77%	0
Sun 9p	Cloudy	59°15° (likely 59°15° to 62°17°)	59°15°	0%	0 mph0 km/h, gusts 5 mph8 km/h	78%	71%	0
Sun 10p	Cloudy	59°15° (likely 59°15° to 61°16°)	59°15°	0%	0 mph0 km/h, gusts 4 mph7 km/h	78%	74%	0
Sun 11p	Cloudy	58°14° (likely 57°14° to 59°15°)	58°14°	0%	0 mph0 km/h, gusts 4 mph7 km/h	80%	79%	0
Mon 12a	Cloudy	56°13° (likely 56°13° to 58°14°)	56°13°	0%	0 mph0 km/h, gusts 4 mph7 km/h	83%	86%	0
Mon 1a	Cloudy	55°13° (likely 55°13° to 58°14°)	55°13°	0%	0 mph0 km/h, gusts 4 mph6 km/h	83%	89%	0
Mon 2a	Cloudy	54°12° (likely 54°12° to 57°14°)	54°12°	0%	0 mph0 km/h, gusts 4 mph6 km/h	83%	92%	0
Mon 3a	Cloudy	53°12° (likely 53°12° to 57°14°)	53°12°	0%	0 mph0 km/h, gusts 4 mph7 km/h	86%	92%	0
Mon 4a	Cloudy	52°11° (likely 52°11° to 57°14°)	52°11°	0%	0 mph0 km/h, gusts 4 mph7 km/h	86%	89%	0
Mon 5a	Cloudy	51°11° (likely 51°11° to 56°13°)	51°11°	0%	0 mph0 km/h, gusts 4 mph7 km/h	86%	96%	0
Mon 6a	Cloudy	50°10° (likely 50°10° to 55°13°)	50°10°	0%	0 mph0 km/h, gusts 5 mph7 km/h	89%	95%	0
Mon 7a	Cloudy	50°10° (likely 50°10° to 56°13°)	50°10°	0%	0 mph0 km/h, gusts 4 mph7 km/h	89%	92%	0
Mon 8a	Cloudy	54°12° (likely 52°11° to 57°14°)	54°12°	0%	0 mph0 km/h, gusts 5 mph8 km/h	83%	89%	0

Days ahead

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

Today, Oct 24. Partly sunny. High 77°25°, low 47°8°. Typical 66°19° / 42°6°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 67°19°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 77°25°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 60°16°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 49°9°
  Dry
Official NWS forecast
Today: Mostly sunny, with a high near 77. Southeast wind around 3 mph.
Tonight: Partly cloudy, with a low around 47. Southeast wind around 2 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
73°23°–77°25°
Low, likely
47°8°–49°9°
Typical high / low
66°19° / 42°6°
Wind
8 mph12 km/h
UV peak
4
Tomorrow, Oct 25. Cloudy. High 79°26°, low 50°10°. Typical 66°19° / 42°6°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Partly sunny, 48°9°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 79°26°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 62°17°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 51°11°
  Dry
Official NWS forecast
Day: Mostly sunny, with a high near 79. Southeast wind around 1 mph.
Night: Mostly cloudy, with a low around 50. Wind around 0 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
75°24°–79°26°
Low, likely
48°9°–51°11°
Typical high / low
66°19° / 42°6°
Wind
5 mph9 km/h, gusts 11 mph18 km/h
UV peak
5
Monday, Oct 26. Cloudy. High 78°26°, low 49°9°. Typical 65°18° / 41°5°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 54°12°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 75°24°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 62°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. High near 78, with temperatures falling to around 74 in the afternoon. South wind around 1 mph.
Night: Mostly cloudy, with a low around 49.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
73°23°–78°26°
Low, likely
49°9°–55°13°
Typical high / low
65°18° / 41°5°
Wind
6 mph10 km/h
UV peak
3
Tuesday, Oct 27. Cloudy. High 75°24°, low 50°10°. Typical 65°18° / 41°5°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 55°13°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 73°23°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 63°17°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 55°13°
  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 50.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
71°22°–75°24°
Low, likely
50°10°–55°13°
Typical high / low
65°18° / 41°5°
Wind
7 mph12 km/h, gusts 21 mph34 km/h
UV peak
3
Wednesday, Oct 28. Cloudy. High 79°26°, low 52°11°. Typical 64°18° / 41°5°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 56°13°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 77°25°
  Dry
3. Evening
  6 PM–midnight
  Clear, 65°19°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 59°15°
  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 52.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
75°24°–79°26°
Low, likely
52°11°–57°14°
Typical high / low
64°18° / 41°5°
Wind
9 mph14 km/h, gusts 20 mph32 km/h
UV peak
4
Thursday, Oct 29. Mostly sunny. High 78°26°, low 50°10°. Typical 64°18° / 40°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 60°16°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 79°26°
  Dry
3. Evening
  6 PM–midnight
  Clear, 67°19°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 57°14°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 78.
Night: Partly cloudy, with a low around 50.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
77°25°–80°27°
Low, likely
50°10°–58°14°
Typical high / low
64°18° / 40°4°
Wind
9 mph14 km/h, gusts 28 mph44 km/h
UV peak
3
Friday, Oct 30. Partly sunny. High 77°25°, low 51°11°. Typical 64°18° / 40°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Mostly sunny, 59°15°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 79°26°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 67°19°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 60°16°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 77.
Night: A slight chance of rain showers after 1am. Mostly cloudy, with a low around 51. Chance of precipitation is 20%.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
75°24°–80°27°
Low, likely
51°11°–59°15°
Typical high / low
64°18° / 40°4°
Wind
8 mph12 km/h, gusts 19 mph30 km/h
UV peak
4
Saturday, Oct 31. Cloudy. High 73°23°, low 62°17°. Typical 63°17° / 40°4°. Rain 0.13 in3.3 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 64°18°
  30% chance
2. Afternoon
  noon–6 PM
  Cloudy, 74°24°
  30% chance
3. Evening
  6 PM–midnight
  Cloudy, 69°21°
  30% chance · 0.04 in1 mm
4. Overnight
  midnight–6 AM
  Cloudy, 67°19°
  50% chance · 0.11 in2.9 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
69°21°–81°27°
Low, likely
60°16°–65°18°
Typical high / low
63°17° / 40°4°
Wind
10 mph16 km/h, gusts 28 mph44 km/h
UV peak
1
Sunday, Nov 1. Drizzle. High 72°22°, low 62°17°. Typical 63°17° / 39°4°. Rain 0.48 in12 mm, 50% chance. Mostly agree.
1. Morning
  6 AM–noon
  Drizzle, 65°18°
  50% chance · 0.12 in3 mm
2. Afternoon
  noon–6 PM
  Drizzle, 69°21°
  40% chance · 0.11 in2.8 mm
3. Evening
  6 PM–midnight
  Drizzle, 66°19°
  40% chance · 0.05 in1.4 mm
4. Overnight
  midnight–6 AM
  Drizzle, 59°15°
  40% chance · 0.05 in1.3 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°–75°24°
Low, likely
59°15°–65°18°
Typical high / low
63°17° / 39°4°
Wind
15 mph24 km/h, gusts 39 mph63 km/h
Monday, Nov 2. Drizzle. High 64°18°, low 56°13°. Typical 62°17° / 39°4°. Rain 0.44 in11 mm, 40% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Drizzle, 60°16°
  40% chance · 0.15 in3.9 mm
2. Afternoon
  noon–6 PM
  Rain, 58°15°
  30% chance · 0.21 in5.3 mm
3. Evening
  6 PM–midnight
  Drizzle, 63°17°
  30% chance · 0.09 in2.2 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°–72°22°
Low, likely
47°8°–67°19°
Typical high / low
62°17° / 39°4°
Wind
16 mph26 km/h, gusts 41 mph66 km/h
UV peak
2

10 days15 days30 days

The outlook

Today
Dry, high 77°, low 47°.
Tomorrow
Dry, high 79°, low 50°.
Monday
Dry, high 78°, low 49°.
Rest of week
Highs 64–79°; chance of precipitation on 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

Missouri River at Washington

13 mi

Below flood stage

Level: 5.2 ft
Flow: 62,000 cfs

Forecast peak 5.2 ft Sat 1 PM

Reading from Sat 7:45 AM · NWS gauge page

Missouri River at St. Charles

20 mi

Below flood stage

Level: 12.3 ft
Flow: 64,500 cfs

Forecast peak 12.3 ft Sat 1 PM

Reading from Sat 8 AM · NWS gauge page

Dardenne Creek at O'Fallon

8.9 mi

Below flood stage

Level: 0.8 ft
Flow: 4 cfs

Reading from Sat 8:05 AM · NWS gauge page

Meramec River near Pacific

12 mi

Below flood stage

Level: -1.6 ft

Reading from Sat 8 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 13Typical 85

Heating degree days, base 65°F

Comfort

Dry air outside (dew point 50°F).

Open the windows?

Today, 10:00 AM–8:00 PM

Good stretch to open the windows.

Is this typical?

ST LOUIS SPIRIT OF ST LOUIS AP · official normals 1991–2020 · records 1987–2026

Oct 24, today vs a typical year

Today’s expected high is 11°6° warmer than typical.

Last 7 days vs normal

On average 1°0° warmer than normal (daily mean temperature).

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

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

Sun & moon

Sun

Daylight: 10 h 51 min; Losing 2 min 21 s a day; shortest Dec 21, 1 h 23 min less
Golden hour: 5:35–6:29 PM; Morning 7:04–7:58 AM
Blue hour: 6:29–6:39 PM; Morning 6:54–7:04 AM; first light 6:54 AM

Stars tonight? Poor

Clouds most of the night (about 52% cover).

Moon

Waxing gibbous

97% lit · growing

Today: sets 5:36 AM · rises 5:09 PM
Full moon: Oct 25
New moon: Nov 9

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

Defiance, MO weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Missouri River at Washington

Missouri River at St. Charles

Dardenne Creek at O'Fallon

Meramec River near Pacific

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? Poor

Moon