Observed 5:55 AM CDT at KSAR

St. Mary, MO weather

Clear and 46°8°, 11°6° warmer than a typical Oct 24.

Mostly agree

Now 46°8°

Clear

Wind: Calm; Light through 7 PM
Dew point: 46°8°; Comfortable
Humidity: 98%; Air 46°8°, dew point 46°8° · fog or dew likely
UV index: 0Low; Moderate 11 AM–4 PM · peak 5
Air quality: 38Good; Main pollutant: Ozone
Pressure: 30.34 inHg1027 hPa; Rising · +0.05 inHg+1.5 hPa in 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

3°2° cooler than this time yesterday (50°10° then, 46°8° now)

Good hours for

Fog until 10 AM
Above 60°16° today by 11 AM
High 77°25° today at 4 PM
Below 60°16° tonight after 9 PM

This morningUp to 64°18° by 11 AM · Mostly cloudy
This afternoonUp to 77°25° by 4 PM · Mostly cloudy
TonightDown to 48°9° by 4 AM · Partly cloudy
Tomorrow morningUp to 68°20° by 11 AM · Mostly cloudy
Tomorrow afternoonUp to 79°26° by 4 PM · Cloudy
Tomorrow nightDown to 50°10° by 5 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 7a	Fog	46°8° (likely 43°6° to 50°10°)	46°8°	0%	0 mph0 km/h, gusts 2 mph3 km/h	86%	54%	0
Sat 8a	Fog	47°8° (likely 44°7° to 52°11°)	47°8°	0%	0 mph0 km/h, gusts 2 mph4 km/h	93%	56%	0
Sat 9a	Fog	48°9° (likely 48°9° to 56°13°)	48°9°	0%	1 mph2 km/h from ESE, gusts 4 mph6 km/h	100%	52%	1
Sat 10a	Cloudy	56°13° (likely 56°13° to 62°17°)	56°13°	0%	1 mph2 km/h from SE, gusts 6 mph9 km/h	77%	67%	2
Sat 11a	Cloudy	64°18° (likely 64°18° to 68°20°)	64°18°	0%	2 mph3 km/h from SE, gusts 6 mph10 km/h	58%	75%	3
Sat 12p	Cloudy	69°21° (likely 69°21° to 72°22°)	69°21°	0%	2 mph3 km/h from SE, gusts 6 mph10 km/h	45%	74%	4
Sat 1p	Mostly sunny	73°23° (likely 72°22° to 75°24°)	73°23°	0%	2 mph3 km/h from ESE, gusts 6 mph9 km/h	38%	67%	5
Sat 2p	Partly sunny	75°24° (likely 74°23° to 77°25°)	75°24°	0%	2 mph3 km/h from ESE, gusts 5 mph9 km/h	33%	73%	4
Sat 3p	Partly sunny	76°24° (likely 75°24° to 77°25°)	76°24°	0%	2 mph3 km/h from ESE, gusts 7 mph11 km/h	33%	67%	4
Sat 4p	Partly sunny	77°25° (likely 74°23° to 77°25°)	77°25°	0%	3 mph5 km/h from ESE, gusts 7 mph12 km/h	31%	59%	2
Sat 5p	Sunny	75°24° (likely 71°22° to 75°24°)	75°24°	0%	2 mph3 km/h from ESE, gusts 8 mph13 km/h	34%	39%	1
Sat 6p	Clear	72°22° (likely 66°19° to 72°22°)	72°22°	0%	2 mph3 km/h from ESE, gusts 6 mph10 km/h	38%	16%	0
Sat 7p	Mostly clear	67°19° (likely 62°17° to 67°19°)	67°19°	0%	2 mph3 km/h from ESE, gusts 5 mph8 km/h	47%	53%	0
Sat 8p	Mostly clear	61°16° (likely 59°15° to 61°16°)	61°16°	0%	1 mph2 km/h from ESE, gusts 6 mph10 km/h	56%	49%	0
Sat 9p	Partly cloudy	58°14° (likely 56°13° to 60°16°)	58°14°	0%	1 mph2 km/h from SE, gusts 6 mph10 km/h	64%	47%	0
Sat 10p	Mostly clear	56°13° (likely 54°12° to 58°14°)	56°13°	0%	1 mph2 km/h from SSE, gusts 5 mph7 km/h	69%	47%	0
Sat 11p	Mostly clear	54°12° (likely 52°11° to 56°13°)	54°12°	0%	1 mph2 km/h from SSE, gusts 5 mph7 km/h	74%	61%	0
Sun 12a	Partly cloudy	53°12° (likely 51°11° to 55°13°)	53°12°	0%	1 mph2 km/h from S, gusts 4 mph7 km/h	77%	60%	0
Sun 1a	Mostly clear	52°11° (likely 49°9° to 54°12°)	52°11°	0%	1 mph2 km/h from SSE, gusts 3 mph5 km/h	80%	64%	0
Sun 2a	Mostly clear	51°11° (likely 48°9° to 53°12°)	51°11°	0%	0 mph0 km/h, gusts 3 mph5 km/h	83%	53%	0
Sun 3a	Mostly clear	50°10° (likely 47°8° to 53°12°)	50°10°	0%	0 mph0 km/h, gusts 3 mph4 km/h	86%	46%	0
Sun 4a	Mostly clear	48°9° (likely 45°7° to 52°11°)	48°9°	0%	0 mph0 km/h, gusts 2 mph4 km/h	89%	43%	0
Sun 5a	Mostly clear	48°9° (likely 45°7° to 51°11°)	48°9°	0%	0 mph0 km/h, gusts 2 mph4 km/h	89%	28%	0
Sun 6a	Mostly clear	48°9° (likely 44°7° to 51°11°)	48°9°	0%	0 mph0 km/h, gusts 2 mph4 km/h	89%	54%	0
Sun 7a	Mostly sunny	47°8° (likely 43°6° to 51°11°)	47°8°	0%	0 mph0 km/h, gusts 2 mph4 km/h	93%	58%	0
Sun 8a	Cloudy	48°9° (likely 44°7° to 53°12°)	48°9°	0%	1 mph2 km/h from SSE, gusts 3 mph5 km/h	93%	71%	0
Sun 9a	Mostly sunny	52°11° (likely 52°11° to 59°15°)	52°11°	0%	1 mph2 km/h from S, gusts 4 mph6 km/h	89%	61%	1
Sun 10a	Cloudy	61°16° (likely 61°16° to 66°19°)	61°16°	0%	0 mph0 km/h, gusts 6 mph10 km/h	72%	60%	2
Sun 11a	Partly sunny	68°20° (likely 68°20° to 72°22°)	68°20°	0%	1 mph2 km/h from S, gusts 7 mph11 km/h	57%	73%	3
Sun 12p	Cloudy	73°23° (likely 73°23° to 76°24°)	73°23°	0%	1 mph2 km/h from S, gusts 5 mph8 km/h	44%	82%	4
Sun 1p	Cloudy	76°24° (likely 76°24° to 79°26°)	76°24°	0%	1 mph2 km/h from S, gusts 5 mph8 km/h	40%	85%	4
Sun 2p	Cloudy	78°26° (likely 77°25° to 80°27°)	78°26°	0%	1 mph2 km/h from S, gusts 5 mph8 km/h	35%	84%	4
Sun 3p	Cloudy	78°26° (likely 77°25° to 80°27°)	78°26°	0%	2 mph3 km/h from S, gusts 5 mph8 km/h	35%	85%	3
Sun 4p	Cloudy	79°26° (likely 76°24° to 79°26°)	79°26°	0%	2 mph3 km/h from SSE, gusts 6 mph9 km/h	34%	87%	2
Sun 5p	Cloudy	77°25° (likely 74°23° to 78°26°)	77°25°	0%	2 mph3 km/h from SSE, gusts 7 mph11 km/h	37%	87%	1
Sun 6p	Cloudy	74°23° (likely 68°20° to 74°23°)	74°23°	0%	2 mph3 km/h from SSE, gusts 8 mph13 km/h	41%	87%	0
Sun 7p	Cloudy	69°21° (likely 65°18° to 69°21°)	69°21°	0%	2 mph3 km/h from SSE, gusts 8 mph12 km/h	51%	87%	0
Sun 8p	Cloudy	63°17° (likely 63°17° to 65°18°)	63°17°	0%	2 mph3 km/h from S, gusts 9 mph14 km/h	60%	88%	0
Sun 9p	Cloudy	60°16° (likely 60°16° to 63°17°)	60°16°	0%	2 mph3 km/h from S, gusts 8 mph13 km/h	67%	74%	0
Sun 10p	Cloudy	58°14° (likely 57°14° to 61°16°)	58°14°	0%	1 mph2 km/h from S, gusts 6 mph10 km/h	72%	88%	0
Sun 11p	Cloudy	57°14° (likely 55°13° to 60°16°)	57°14°	0%	1 mph2 km/h from S, gusts 5 mph9 km/h	75%	87%	0
Mon 12a	Cloudy	56°13° (likely 53°12° to 59°15°)	56°13°	0%	1 mph2 km/h from S, gusts 5 mph7 km/h	77%	89%	0
Mon 1a	Cloudy	55°13° (likely 52°11° to 59°15°)	55°13°	0%	1 mph2 km/h from S, gusts 4 mph7 km/h	80%	90%	0
Mon 2a	Cloudy	54°12° (likely 49°9° to 59°15°)	54°12°	0%	1 mph2 km/h from S, gusts 4 mph6 km/h	80%	89%	0
Mon 3a	Cloudy	52°11° (likely 48°9° to 59°15°)	52°11°	0%	1 mph2 km/h from SSW, gusts 4 mph6 km/h	86%	91%	0
Mon 4a	Cloudy	51°11° (likely 47°8° to 59°15°)	51°11°	0%	1 mph2 km/h from SSW, gusts 4 mph7 km/h	86%	92%	0
Mon 5a	Mostly cloudy	50°10° (likely 46°8° to 58°14°)	50°10°	0%	1 mph2 km/h from SSW, gusts 3 mph6 km/h	86%	94%	0
Mon 6a	Mostly cloudy	49°9° (likely 46°8° to 57°14°)	49°9°	0%	0 mph0 km/h, gusts 4 mph6 km/h	89%	86%	0

Days ahead

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

Today, Oct 24. Fog. High 77°25°, low 46°8°. Typical 66°19° / 41°5°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Fog, 47°8°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 77°25°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 61°16°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 48°9°
  Dry
Official NWS forecast
Today: Patchy fog before 10am. Sunny. High near 77, with temperatures falling to around 75 in the afternoon. East southeast wind 0 to 3 mph.
Tonight: Mostly clear. Low around 46, with temperatures rising to around 48 overnight. Southeast wind around 2 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
75°24°–77°25°
Low, likely
43°6°–50°10°
Typical high / low
66°19° / 41°5°
Wind
7 mph10 km/h
UV peak
5
Tomorrow, Oct 25. Cloudy. High 79°26°, low 49°9°. Typical 66°19° / 40°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Mostly sunny, 48°9°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 79°26°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 63°17°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 50°10°
  Dry
Official NWS forecast
Day: Mostly sunny. High near 79, with temperatures falling to around 77 in the afternoon. South southeast wind around 2 mph.
Night: Mostly cloudy, with a low around 49. South wind around 2 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
77°25°–80°27°
Low, likely
43°6°–50°10°
Typical high / low
66°19° / 40°4°
Wind
7 mph11 km/h, gusts 12 mph19 km/h
UV peak
4
Monday, Oct 26. Mostly cloudy. High 78°26°, low 48°9°. Typical 65°18° / 40°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 54°12°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 77°25°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 61°16°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 51°11°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 78. South southwest wind around 2 mph.
Night: Mostly cloudy, with a low around 48. South wind around 2 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
75°24°–79°26°
Low, likely
48°9°–57°14°
Typical high / low
65°18° / 40°4°
Wind
8 mph12 km/h
UV peak
4
Tuesday, Oct 27. Mostly cloudy. High 75°24°, low 50°10°. Typical 65°18° / 40°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 53°12°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 74°23°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 62°17°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 52°11°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 75. South southeast wind 0 to 5 mph.
Night: Mostly cloudy, with a low around 50. South southeast wind around 3 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
72°22°–75°24°
Low, likely
45°7°–55°13°
Typical high / low
65°18° / 40°4°
Wind
9 mph14 km/h, gusts 20 mph32 km/h
UV peak
3
Wednesday, Oct 28. Partly sunny. High 79°26°, low 51°11°. Typical 64°18° / 39°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 55°13°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 78°25°
  Dry
3. Evening
  6 PM–midnight
  Clear, 63°17°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 55°13°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 79. South wind 1 to 8 mph.
Night: Mostly clear, with a low around 51. South wind around 6 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
75°24°–79°26°
Low, likely
47°8°–54°12°
Typical high / low
64°18° / 39°4°
Wind
10 mph16 km/h, gusts 21 mph33 km/h
UV peak
4
Thursday, Oct 29. Cloudy. High 80°27°, low 50°10°. Typical 64°18° / 39°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 57°14°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 80°27°
  Dry
3. Evening
  6 PM–midnight
  Clear, 65°18°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 53°12°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 80. South wind around 5 mph.
Night: Partly cloudy, with a low around 50. South wind around 3 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
78°26°–81°27°
Low, likely
50°10°–57°14°
Typical high / low
64°18° / 39°4°
Wind
10 mph16 km/h, gusts 26 mph42 km/h
UV peak
4
Friday, Oct 30. Cloudy. High 77°25°, low 51°11°. Typical 64°18° / 38°3°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 57°14°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 79°26°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 65°18°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 58°15°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 77. South wind 2 to 7 mph.
Night: A slight chance of rain showers after 1am. Mostly cloudy, with a low around 51. South southeast wind around 5 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
76°24°–82°28°
Low, likely
47°8°–57°14°
Typical high / low
64°18° / 38°3°
Wind
8 mph12 km/h, gusts 19 mph30 km/h
UV peak
4
Saturday, Oct 31. Cloudy. High 75°24°, low 61°16°. Typical 63°17° / 38°3°. Rain 0.09 in2.3 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 64°18°
  20% chance
2. Afternoon
  noon–6 PM
  Cloudy, 76°25°
  30% chance
3. Evening
  6 PM–midnight
  Cloudy, 69°20°
  30% chance
4. Overnight
  midnight–6 AM
  Cloudy, 67°20°
  40% 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
70°21°–80°27°
Low, likely
59°15°–63°17°
Typical high / low
63°17° / 38°3°
Wind
12 mph19 km/h, gusts 22 mph35 km/h
UV peak
2
Sunday, Nov 1. Showers. High 71°22°, low 63°17°. Typical 62°17° / 38°3°. Rain 0.6 in15 mm, 40% chance. Mostly agree.
1. Morning
  6 AM–noon
  Drizzle, 67°19°
  40% chance · 0.15 in3.9 mm
2. Afternoon
  noon–6 PM
  Showers, 68°20°
  40% chance · 0.29 in7.3 mm
3. Evening
  6 PM–midnight
  Showers, 66°19°
  40% chance · 0.09 in2.4 mm
4. Overnight
  midnight–6 AM
  Clear, 60°16°
  40% chance · 0.12 in3.1 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°–74°23°
Low, likely
59°15°–66°19°
Typical high / low
62°17° / 38°3°
Wind
20 mph31 km/h, gusts 39 mph63 km/h
Monday, Nov 2. Rain. High 69°21°, low 59°15°. Typical 62°17° / 38°3°. Rain 0.34 in8.6 mm, 40% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Drizzle, 61°16°
  40% chance · 0.06 in1.5 mm
2. Afternoon
  noon–6 PM
  Drizzle, 66°19°
  40% chance · 0.19 in4.9 mm
3. Evening
  6 PM–midnight
  Rain, 66°19°
  30% chance · 0.15 in3.9 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
60°16°–77°25°
Low, likely
48°9°–67°19°
Typical high / low
62°17° / 38°3°
Wind
24 mph39 km/h, gusts 42 mph68 km/h
UV peak
2

10 days15 days30 days

The outlook

Today
Dry, high 77°, low 46°.
Tomorrow
Dry, high 79°, low 49°.
Monday
Dry, high 78°, low 48°.
Rest of week
Highs 69–80°; chance of precipitation on Sunday.

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 Chester

6.8 mi

Below flood stage

Level: 11.3 ft
Flow: 175,000 cfs

Forecast peak 11.4 ft Sat 7 AM

Reading from Sat 5:30 AM · NWS gauge page

S Fork Saline Creek above Perryville

9.5 mi

Level: 4.9 ft
Flow: 7 cfs

Reading from Sat 5 AM · NWS gauge page

Mississippi River above Red Rock Landing

19 mi

Below flood stage

Level: 15.4 ft

Reading from Sat 5:30 AM · NWS gauge page

For your home

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

Heating this week

About 84% less heating than a typical week.

This week 14Typical 90

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 2
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 46°F).

Open the windows?

Today, 11:00 AM–8:00 PM

Good stretch to open the windows.

Is this typical?

Perryville Water Plt · official normals 1991–2020 · records 1907–2026

Oct 24, today vs a typical year

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

Last 7 days vs normal

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

St. Mary weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 10 h 53 min; Losing 2 min 16 s a day; shortest Dec 21, 1 h 21 min less
Golden hour: 5:33–6:26 PM; Morning 7:00–7:53 AM
Blue hour: 6:26–6:36 PM; Morning 6:50–7:00 AM; first light 6:50 AM

Stars tonight? Poor

Clouds most of the night (about 48% cover).

Moon

Waxing gibbous

96% lit · growing

Today: sets 5:32 AM · rises 5:07 PM
Full moon: Oct 25
New moon: Nov 9

Looking west from St. Mary. The highest point on the skyline is about 2,300 ft, 16 mi away.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.