Observed 8:35 AM CDT at KFYG

St. Clair, MO weather

Foggy and 50°10°, 10°6° warmer than a typical Oct 24.

Forecasts agree

Now 50°10°

Fog

Wind: Calm; Light through 9 PM
Visibility: 4 mi6 km; Fog · under 5 mi8 km
Dew point: 50°10°; Comfortable
Humidity: 100%; Air 50°10°, dew point 50°10° · fog or dew likely
UV index: 0Low; Moderate 11 AM–4 PM · peak 4
Pressure: 30.37 inHg1028 hPa; Rising slowly · +0.04 inHg+1.4 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 (48°9° then, 50°10° now)

Good hours for

Above 60°16° today by 10 AM
High 76°24° today at 4 PM
Below 60°16° tonight after 8 PM
Low 47°8° tomorrow at 7 AM

This morningUp to 65°18° by 11 AM · Mostly cloudy
This afternoonUp to 76°24° by 4 PM · Mostly cloudy
TonightDown to 48°9° by 5 AM · Mostly cloudy
Tomorrow morningUp to 68°20° by 11 AM · Mostly cloudy
Tomorrow afternoonUp to 77°25° by 4 PM · Mostly cloudy
Tomorrow nightDown to 50°10° by 5 AM · Cloudy
Monday morningUp to 52°11° 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	53°12° (likely 51°11° to 56°13°)	53°12°	0%	1 mph2 km/h from S, gusts 4 mph7 km/h	83%	55%	0
Sat 10a	Mostly sunny	60°16° (likely 57°14° to 63°17°)	60°16°	0%	1 mph2 km/h from S, gusts 8 mph13 km/h	69%	64%	1
Sat 11a	Cloudy	65°18° (likely 62°17° to 68°20°)	65°18°	0%	1 mph2 km/h from S, gusts 8 mph13 km/h	60%	73%	3
Sat 12p	Cloudy	70°21° (likely 67°19° to 72°22°)	70°21°	0%	1 mph2 km/h from SE, gusts 7 mph11 km/h	49%	79%	4
Sat 1p	Cloudy	72°22° (likely 71°22° to 75°24°)	72°22°	0%	1 mph2 km/h from SE, gusts 6 mph10 km/h	44%	77%	4
Sat 2p	Partly sunny	74°23° (likely 73°23° to 76°24°)	74°23°	0%	1 mph2 km/h from SE, gusts 6 mph10 km/h	40%	75%	4
Sat 3p	Mostly sunny	75°24° (likely 75°24° to 76°24°)	75°24°	0%	1 mph2 km/h from SE, gusts 7 mph11 km/h	38%	73%	3
Sat 4p	Mostly sunny	76°24° (likely 74°23° to 76°24°)	76°24°	0%	2 mph3 km/h from E, gusts 8 mph12 km/h	39%	59%	2
Sat 5p	Mostly sunny	74°23° (likely 71°22° to 75°24°)	74°23°	0%	2 mph3 km/h from E, gusts 9 mph14 km/h	43%	27%	1
Sat 6p	Clear	70°21° (likely 66°19° to 70°21°)	70°21°	0%	2 mph3 km/h from E, gusts 9 mph15 km/h	51%	44%	0
Sat 7p	Partly cloudy	65°18° (likely 63°17° to 66°19°)	65°18°	0%	2 mph3 km/h from E, gusts 10 mph15 km/h	60%	46%	0
Sat 8p	Partly cloudy	59°15° (likely 59°15° to 63°17°)	59°15°	0%	1 mph2 km/h from SE, gusts 10 mph15 km/h	72%	54%	0
Sat 9p	Partly cloudy	57°14° (likely 57°14° to 61°16°)	57°14°	0%	1 mph2 km/h from SE, gusts 9 mph14 km/h	77%	65%	0
Sat 10p	Mostly clear	56°13° (likely 56°13° to 60°16°)	56°13°	0%	1 mph2 km/h from SE, gusts 9 mph14 km/h	77%	58%	0
Sat 11p	Cloudy	55°13° (likely 54°12° to 59°15°)	55°13°	0%	1 mph2 km/h from S, gusts 8 mph12 km/h	77%	72%	0
Sun 12a	Partly cloudy	54°12° (likely 53°12° to 58°14°)	54°12°	0%	1 mph2 km/h from S, gusts 8 mph12 km/h	80%	71%	0
Sun 1a	Cloudy	53°12° (likely 53°12° to 56°13°)	53°12°	0%	1 mph2 km/h from S, gusts 7 mph12 km/h	80%	65%	0
Sun 2a	Partly cloudy	52°11° (likely 52°11° to 56°13°)	52°11°	0%	0 mph0 km/h, gusts 7 mph12 km/h	80%	74%	0
Sun 3a	Cloudy	51°11° (likely 51°11° to 55°13°)	51°11°	0%	0 mph0 km/h, gusts 7 mph11 km/h	83%	84%	0
Sun 4a	Cloudy	49°9° (likely 49°9° to 54°12°)	49°9°	0%	0 mph0 km/h, gusts 6 mph9 km/h	86%	70%	0
Sun 5a	Mostly clear	48°9° (likely 48°9° to 53°12°)	48°9°	0%	0 mph0 km/h, gusts 4 mph7 km/h	86%	67%	0
Sun 6a	Partly cloudy	48°9° (likely 48°9° to 53°12°)	48°9°	0%	0 mph0 km/h, gusts 4 mph6 km/h	86%	55%	0
Sun 7a	Cloudy	47°8° (likely 47°8° to 52°11°)	47°8°	0%	0 mph0 km/h, gusts 4 mph7 km/h	86%	62%	0
Sun 8a	Cloudy	48°9° (likely 48°9° to 53°12°)	48°9°	0%	0 mph0 km/h, gusts 4 mph7 km/h	89%	67%	0
Sun 9a	Partly sunny	53°12° (likely 53°12° to 58°14°)	53°12°	0%	0 mph0 km/h, gusts 5 mph7 km/h	89%	49%	1
Sun 10a	Cloudy	62°17° (likely 62°17° to 65°18°)	62°17°	0%	0 mph0 km/h, gusts 9 mph14 km/h	70%	62%	2
Sun 11a	Partly sunny	68°20° (likely 68°20° to 70°21°)	68°20°	0%	1 mph2 km/h from S, gusts 10 mph15 km/h	59%	81%	3
Sun 12p	Partly sunny	72°22° (likely 72°22° to 74°23°)	72°22°	0%	0 mph0 km/h, gusts 8 mph12 km/h	51%	84%	4
Sun 1p	Partly sunny	75°24° (likely 75°24° to 76°24°)	75°24°	0%	0 mph0 km/h, gusts 6 mph10 km/h	45%	78%	4
Sun 2p	Cloudy	76°24° (likely 76°24° to 78°26°)	76°24°	0%	0 mph0 km/h, gusts 5 mph8 km/h	42%	88%	4
Sun 3p	Cloudy	76°24° (likely 76°24° to 78°26°)	76°24°	0%	0 mph0 km/h, gusts 5 mph7 km/h	40%	87%	3
Sun 4p	Cloudy	77°25° (likely 76°24° to 78°26°)	77°25°	0%	0 mph0 km/h, gusts 5 mph9 km/h	40%	86%	2
Sun 5p	Cloudy	76°24° (likely 73°23° to 77°25°)	76°24°	0%	0 mph0 km/h, gusts 6 mph9 km/h	43%	87%	1
Sun 6p	Cloudy	71°22° (likely 68°20° to 72°22°)	71°22°	0%	0 mph0 km/h, gusts 2 mph3 km/h	55%	74%	0
Sun 7p	Cloudy	67°19° (likely 64°18° to 68°20°)	67°19°	0%	0 mph0 km/h, gusts 3 mph4 km/h	61%	79%	0
Sun 8p	Partly cloudy	61°16° (likely 61°16° to 66°19°)	61°16°	0%	0 mph0 km/h, gusts 4 mph7 km/h	72%	80%	0
Sun 9p	Cloudy	58°14° (likely 58°14° to 63°17°)	58°14°	0%	0 mph0 km/h, gusts 7 mph11 km/h	77%	78%	0
Sun 10p	Cloudy	57°14° (likely 57°14° to 61°16°)	57°14°	0%	0 mph0 km/h, gusts 8 mph13 km/h	80%	82%	0
Sun 11p	Cloudy	56°13° (likely 56°13° to 60°16°)	56°13°	0%	0 mph0 km/h, gusts 10 mph16 km/h	80%	88%	0
Mon 12a	Cloudy	55°13° (likely 55°13° to 59°15°)	55°13°	0%	1 mph2 km/h from S, gusts 10 mph17 km/h	83%	89%	0
Mon 1a	Cloudy	54°12° (likely 54°12° to 59°15°)	54°12°	0%	1 mph2 km/h from S, gusts 10 mph16 km/h	83%	91%	0
Mon 2a	Cloudy	53°12° (likely 53°12° to 59°15°)	53°12°	0%	1 mph2 km/h from S, gusts 10 mph15 km/h	83%	92%	0
Mon 3a	Cloudy	52°11° (likely 52°11° to 58°14°)	52°11°	0%	1 mph2 km/h from S, gusts 9 mph15 km/h	86%	91%	0
Mon 4a	Cloudy	51°11° (likely 51°11° to 57°14°)	51°11°	0%	1 mph2 km/h from S, gusts 9 mph14 km/h	86%	95%	0
Mon 5a	Cloudy	50°10° (likely 50°10° to 57°14°)	50°10°	0%	1 mph2 km/h from S, gusts 8 mph13 km/h	86%	98%	0
Mon 6a	Cloudy	48°9° (likely 48°9° to 57°14°)	48°9°	0%	1 mph2 km/h from S, gusts 7 mph12 km/h	89%	95%	0
Mon 7a	Cloudy	49°9° (likely 49°9° to 56°13°)	49°9°	0%	1 mph2 km/h from S, gusts 6 mph10 km/h	86%	91%	0
Mon 8a	Cloudy	52°11° (likely 52°11° to 58°14°)	52°11°	0%	1 mph2 km/h from S, gusts 4 mph7 km/h	83%	92%	0

Days ahead

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

Today, Oct 24. Cloudy. High 76°24°, low 46°8°. Typical 66°19° / 40°4°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Mostly sunny, 65°18°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 76°24°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 59°15°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 48°9°
  Dry
Official NWS forecast
Today: Mostly sunny, with a high near 76. Southeast wind around 2 mph.
Tonight: Partly cloudy, with a low around 46. Southeast wind around 2 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
75°24°–76°24°
Low, likely
45°7°–50°10°
Typical high / low
66°19° / 40°4°
Wind
7 mph12 km/h, gusts 15 mph23 km/h
UV peak
4
Tomorrow, Oct 25. Cloudy. High 78°26°, low 48°9°. Typical 65°18° / 40°4°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Partly sunny, 48°9°
  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, 50°10°
  Dry
Official NWS forecast
Day: Mostly sunny, with a high near 78. West wind around 1 mph.
Night: Mostly cloudy, with a low around 48. Northeast wind around 1 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
77°25°–78°26°
Low, likely
48°9°–52°11°
Typical high / low
65°18° / 40°4°
Wind
9 mph14 km/h, gusts 17 mph27 km/h
UV peak
4
Monday, Oct 26. Cloudy. High 76°24°, low 48°9°. Typical 64°18° / 39°4°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Cloudy, 52°11°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 75°24°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 61°16°
  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 76, with temperatures falling to around 72 in the afternoon. Southwest wind around 1 mph.
Night: Mostly cloudy, with a low around 48.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
74°23°–76°24°
Low, likely
48°9°–56°13°
Typical high / low
64°18° / 39°4°
Wind
9 mph14 km/h, gusts 17 mph27 km/h
UV peak
4
Tuesday, Oct 27. Cloudy. High 73°23°, low 49°9°. Typical 64°18° / 39°4°. 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
  Partly cloudy, 61°16°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 54°12°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly cloudy, with a high near 73.
Night: Mostly cloudy, with a low around 49.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
71°22°–74°23°
Low, likely
49°9°–55°13°
Typical high / low
64°18° / 39°4°
Wind
8 mph13 km/h, gusts 20 mph32 km/h
UV peak
4
Wednesday, Oct 28. Cloudy. High 78°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°26°
  Dry
3. Evening
  6 PM–midnight
  Clear, 64°18°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 59°15°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 78.
Night: Mostly clear, with a low around 51.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
76°24°–79°26°
Low, likely
49°9°–57°14°
Typical high / low
64°18° / 39°4°
Wind
8 mph13 km/h, gusts 22 mph35 km/h
UV peak
4
Thursday, Oct 29. Cloudy. High 77°25°, low 50°10°. Typical 63°17° / 38°3°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Partly sunny, 60°16°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 80°26°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 67°19°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 56°13°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 77.
Night: Partly cloudy, with a low around 50.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
77°25°–81°27°
Low, likely
50°10°–59°15°
Typical high / low
63°17° / 38°3°
Wind
8 mph13 km/h, gusts 26 mph42 km/h
UV peak
3
Friday, Oct 30. Mostly cloudy. High 75°24°, low 50°10°. Typical 63°17° / 38°3°. Dry. Mostly agree. Best day outdoors this week.
1. Morning
  6 AM–noon
  Cloudy, 59°15°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 79°26°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 65°18°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 59°15°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 75.
Night: A slight chance of rain showers after 1am. Mostly cloudy, with a low around 50. Chance of precipitation is 20%.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Best day outdoors this week: the one dry, mild day the forecasts agree on (high 75°24°).
High, likely
75°24°–81°27°
Low, likely
50°10°–59°15°
Typical high / low
63°17° / 38°3°
Wind
8 mph12 km/h, gusts 19 mph30 km/h
UV peak
4
Saturday, Oct 31. Cloudy. High 74°23°, low 61°16°. Typical 62°17° / 38°3°. Rain 0.12 in3 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 64°18°
  30% chance
2. Afternoon
  noon–6 PM
  Cloudy, 75°24°
  30% chance
3. Evening
  6 PM–midnight
  Cloudy, 68°20°
  30% chance · 0.04 in0.9 mm
4. Overnight
  midnight–6 AM
  Drizzle, 66°19°
  50% chance · 0.19 in4.8 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
62°17° / 38°3°
Wind
10 mph16 km/h, gusts 23 mph37 km/h
UV peak
1
Sunday, Nov 1. Showers. High 73°23°, low 61°16°. Typical 62°17° / 37°3°. Rain 0.58 in15 mm, 50% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Showers, 64°18°
  50% chance · 0.19 in4.7 mm
2. Afternoon
  noon–6 PM
  Showers, 70°21°
  40% chance · 0.11 in2.8 mm
3. Evening
  6 PM–midnight
  Drizzle, 66°19°
  40% chance · 0.06 in1.5 mm
4. Overnight
  midnight–6 AM
  Drizzle, 59°15°
  40% 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
69°21°–77°25°
Low, likely
59°15°–64°18°
Typical high / low
62°17° / 37°3°
Wind
16 mph26 km/h, gusts 40 mph64 km/h
Monday, Nov 2. Drizzle. High 66°19°, low 56°13°. Typical 61°16° / 37°3°. Rain 0.27 in6.9 mm, 40% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Drizzle, 60°15°
  40% chance · 0.12 in3 mm
2. Afternoon
  noon–6 PM
  Drizzle, 59°15°
  30% chance · 0.11 in2.9 mm
3. Evening
  6 PM–midnight
  Drizzle, 66°19°
  30% chance · 0.04 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
56°13°–78°26°
Low, likely
47°8°–67°19°
Typical high / low
61°16° / 37°3°
Wind
17 mph28 km/h, gusts 34 mph55 km/h
UV peak
2

10 days15 days30 days

The outlook

Today
Dry, high 76°, low 46°.
Tomorrow
Dry, high 78°, low 48°.
Monday
Dry, high 76°, low 48°.
Rest of week
Highs 66–78°; 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

15 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

Bourbeuse River at Union

6.7 mi

Below flood stage

Level: 3.1 ft
Flow: 70 cfs

Reading from Sat 8 AM · NWS gauge page

Meramec River near Sullivan

14 mi

Below flood stage

Level: 3.0 ft
Flow: 274 cfs

Reading from Sat 7:30 AM · NWS gauge page

Meramec River near Pacific

16 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 14Typical 94

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 1
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 50°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?

Washington · official normals 1991–2020 · records 2009–2026

Oct 24, today vs a typical year

Today’s expected high is 10°6° warmer than typical.

Last 7 days vs normal

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

−7°−4°SunOct 18
−3°−2°MonOct 19
±0°TueOct 20
+4°+2°WedOct 21
—ThuOct 22
+6°+3°FriOct 23
+7°+4°SatOct 24

St. Clair 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: 5:37–6:30 PM; Morning 7:05–7:58 AM
Blue hour: 6:30–6:40 PM; Morning 6:55–7:05 AM; first light 6:55 AM

Stars tonight? Poor

Clouds most of the night (about 63% cover).

Moon

Waxing gibbous

97% lit · growing

Today: sets 5:37 AM · rises 5:11 PM
Full moon: Oct 25
New moon: Nov 9

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

St. Clair, 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

Bourbeuse River at Union

Meramec River near Sullivan

Meramec River near Pacific

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? Poor

Moon