Observed 8:45 AM CDT at KCPS

Valmeyer, IL weather

Sunny and 52°11°.

Mostly agree

Now 52°11°

Sunny

Wind: Calm; Light through 9 PM
Dew point: 48°9°; Comfortable
UV index: 1Low; Moderate 11 AM–4 PM · peak 4
Pressure: 30.39 inHg1029 hPa; Rising slowly · +0.04 inHg+1.5 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 (46°8° then, 45°7° now)

Good hours for

Above 60°16° today by 10 AM
High 76°24° today at 4 PM
Below 60°16° tonight after 9 PM
Low 48°9° tomorrow at 7 AM

This morningUp to 66°19° by 11 AM · Mostly cloudy
This afternoonUp to 76°24° 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 · Cloudy
Monday morningUp to 55°13° 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 54°12°)	53°12°	0%	2 mph3 km/h from SE, gusts 4 mph6 km/h	83%	49%	1
Sat 10a	Cloudy	60°16° (likely 58°14° to 60°16°)	60°16°	0%	2 mph3 km/h from SE, gusts 6 mph10 km/h	72%	65%	2
Sat 11a	Cloudy	66°19° (likely 63°17° to 66°19°)	66°19°	0%	3 mph5 km/h from SE, gusts 7 mph11 km/h	58%	76%	3
Sat 12p	Cloudy	70°21° (likely 67°19° to 70°21°)	70°21°	0%	3 mph5 km/h from SE, gusts 6 mph10 km/h	51%	72%	4
Sat 1p	Partly sunny	73°23° (likely 70°21° to 73°23°)	73°23°	0%	3 mph5 km/h from SE, gusts 6 mph10 km/h	44%	76%	4
Sat 2p	Partly sunny	74°23° (likely 72°22° to 74°23°)	74°23°	0%	3 mph5 km/h from SE, gusts 7 mph11 km/h	43%	74%	4
Sat 3p	Partly sunny	75°24° (likely 72°22° to 75°24°)	75°24°	0%	3 mph5 km/h from SE, gusts 7 mph12 km/h	41%	58%	3
Sat 4p	Cloudy	76°24° (likely 72°22° to 76°24°)	76°24°	0%	3 mph5 km/h from SE, gusts 8 mph13 km/h	40%	70%	2
Sat 5p	Mostly sunny	74°23° (likely 69°21° to 74°23°)	74°23°	0%	3 mph5 km/h from E, gusts 8 mph13 km/h	44%	46%	1
Sat 6p	Mostly clear	71°22° (likely 64°18° to 71°22°)	71°22°	0%	3 mph5 km/h from E, gusts 8 mph13 km/h	47%	44%	0
Sat 7p	Clear	66°19° (likely 61°16° to 66°19°)	66°19°	0%	3 mph5 km/h from E, gusts 8 mph13 km/h	54%	40%	0
Sat 8p	Clear	60°16° (likely 59°15° to 63°17°)	60°16°	0%	2 mph3 km/h from SE, gusts 9 mph15 km/h	62%	40%	0
Sat 9p	Clear	58°14° (likely 57°14° to 61°16°)	58°14°	0%	2 mph3 km/h from SE, gusts 8 mph13 km/h	67%	40%	0
Sat 10p	Mostly clear	56°13° (likely 55°13° to 59°15°)	56°13°	0%	2 mph3 km/h from SE, gusts 6 mph10 km/h	72%	18%	0
Sat 11p	Clear	55°13° (likely 54°12° to 58°14°)	55°13°	0%	1 mph2 km/h from SE, gusts 6 mph9 km/h	72%	41%	0
Sun 12a	Mostly clear	54°12° (likely 52°11° to 57°14°)	54°12°	0%	1 mph2 km/h from SE, gusts 5 mph9 km/h	71%	44%	0
Sun 1a	Partly cloudy	52°11° (likely 51°11° to 55°13°)	52°11°	0%	1 mph2 km/h from S, gusts 5 mph8 km/h	80%	36%	0
Sun 2a	Partly cloudy	51°11° (likely 51°11° to 54°12°)	51°11°	0%	0 mph0 km/h, gusts 5 mph8 km/h	80%	27%	0
Sun 3a	Mostly clear	50°10° (likely 50°10° to 54°12°)	50°10°	0%	0 mph0 km/h, gusts 4 mph7 km/h	83%	26%	0
Sun 4a	Mostly clear	50°10° (likely 49°9° to 53°12°)	50°10°	0%	1 mph2 km/h from S, gusts 5 mph7 km/h	83%	44%	0
Sun 5a	Mostly clear	49°9° (likely 48°9° to 52°11°)	49°9°	0%	0 mph0 km/h, gusts 5 mph7 km/h	86%	46%	0
Sun 6a	Mostly clear	49°9° (likely 47°8° to 50°10°)	49°9°	0%	0 mph0 km/h, gusts 3 mph5 km/h	86%	55%	0
Sun 7a	Partly sunny	48°9° (likely 47°8° to 50°10°)	48°9°	0%	0 mph0 km/h, gusts 4 mph6 km/h	86%	71%	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%	75%	0
Sun 9a	Cloudy	54°12° (likely 53°12° to 56°13°)	54°12°	0%	1 mph2 km/h from S, gusts 4 mph6 km/h	86%	78%	1
Sun 10a	Partly sunny	63°17° (likely 61°16° to 64°18°)	63°17°	0%	1 mph2 km/h from S, gusts 7 mph11 km/h	70%	68%	2
Sun 11a	Partly sunny	69°21° (likely 66°19° to 69°21°)	69°21°	0%	1 mph2 km/h from S, gusts 7 mph11 km/h	59%	70%	3
Sun 12p	Cloudy	73°23° (likely 70°21° to 73°23°)	73°23°	0%	1 mph2 km/h from S, gusts 6 mph9 km/h	51%	80%	4
Sun 1p	Cloudy	76°24° (likely 72°22° to 76°24°)	76°24°	0%	1 mph2 km/h from S, gusts 4 mph6 km/h	45%	81%	4
Sun 2p	Cloudy	77°25° (likely 74°23° to 78°26°)	77°25°	0%	1 mph2 km/h from SE, gusts 3 mph5 km/h	43%	80%	4
Sun 3p	Cloudy	78°26° (likely 75°24° to 78°26°)	78°26°	0%	2 mph3 km/h from SE, gusts 3 mph5 km/h	42%	81%	3
Sun 4p	Cloudy	79°26° (likely 74°23° to 79°26°)	79°26°	0%	2 mph3 km/h from SE, gusts 4 mph6 km/h	39%	81%	2
Sun 5p	Cloudy	77°25° (likely 72°22° to 77°25°)	77°25°	0%	2 mph3 km/h from E, gusts 5 mph8 km/h	45%	81%	1
Sun 6p	Cloudy	74°23° (likely 67°19° to 74°23°)	74°23°	0%	2 mph3 km/h from E, gusts 6 mph10 km/h	50%	80%	0
Sun 7p	Cloudy	69°21° (likely 64°18° to 69°21°)	69°21°	0%	2 mph3 km/h from E, gusts 7 mph12 km/h	55%	80%	0
Sun 8p	Cloudy	63°17° (likely 61°16° to 66°19°)	63°17°	0%	1 mph2 km/h from SE, gusts 8 mph13 km/h	65%	80%	0
Sun 9p	Cloudy	60°16° (likely 60°16° to 64°18°)	60°16°	0%	1 mph2 km/h from SE, gusts 9 mph14 km/h	69%	79%	0
Sun 10p	Cloudy	59°15° (likely 58°14° to 62°17°)	59°15°	0%	1 mph2 km/h from S, gusts 8 mph13 km/h	72%	80%	0
Sun 11p	Cloudy	57°14° (likely 57°14° to 61°16°)	57°14°	0%	1 mph2 km/h from S, gusts 7 mph11 km/h	77%	83%	0
Mon 12a	Cloudy	56°13° (likely 56°13° to 60°16°)	56°13°	0%	0 mph0 km/h, gusts 6 mph9 km/h	77%	86%	0
Mon 1a	Cloudy	55°13° (likely 55°13° to 60°16°)	55°13°	0%	0 mph0 km/h, gusts 5 mph8 km/h	80%	89%	0
Mon 2a	Cloudy	54°12° (likely 54°12° to 59°15°)	54°12°	0%	0 mph0 km/h, gusts 4 mph7 km/h	83%	92%	0
Mon 3a	Cloudy	53°12° (likely 53°12° to 58°14°)	53°12°	0%	0 mph0 km/h, gusts 5 mph8 km/h	83%	96%	0
Mon 4a	Cloudy	52°11° (likely 52°11° to 57°14°)	52°11°	0%	0 mph0 km/h, gusts 5 mph8 km/h	86%	94%	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%	95%	0
Mon 6a	Cloudy	50°10° (likely 50°10° to 56°13°)	50°10°	0%	0 mph0 km/h, gusts 4 mph6 km/h	89%	94%	0
Mon 7a	Cloudy	51°11° (likely 51°11° to 55°13°)	51°11°	0%	0 mph0 km/h, gusts 4 mph6 km/h	86%	96%	0
Mon 8a	Cloudy	55°13° (likely 51°11° to 57°14°)	55°13°	0%	0 mph0 km/h, gusts 3 mph4 km/h	80%	94%	0

Days ahead

Tap a day for its hours and the official wording.

Today, Oct 24. Fog. High 76°24°, low 48°9°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 66°19°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 76°24°
  Dry
3. Evening
  6 PM–midnight
  Clear, 60°16°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 49°9°
  Dry
Official NWS forecast
Today: Patchy fog before 10am. Mostly sunny, with a high near 76. Southeast wind around 3 mph.
Tonight: Partly cloudy, with a low around 48. Southeast wind 0 to 3 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
72°22°–76°24°
Low, likely
45°7°–48°9°
Wind
7 mph11 km/h, gusts 13 mph21 km/h
UV peak
4
Tomorrow, Oct 25. Cloudy. High 79°26°, low 50°10°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 49°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, 51°11°
  Dry
Official NWS forecast
Day: Mostly sunny, with a high near 79. Southeast wind around 2 mph.
Night: Mostly cloudy, with a low around 50. Southeast wind around 2 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
75°24°–79°26°
Low, likely
47°8°–50°10°
Wind
8 mph12 km/h
UV peak
4
Monday, Oct 26. Cloudy. High 78°26°, low 50°10°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 55°13°
  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, 52°11°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 78. South wind around 2 mph.
Night: Mostly cloudy, with a low around 50.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
73°23°–78°26°
Low, likely
50°10°–55°13°
Wind
7 mph11 km/h
UV peak
4
Tuesday, Oct 27. Cloudy. High 75°24°, low 51°11°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Cloudy, 53°11°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 73°23°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 62°16°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 53°11°
  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 51.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
71°22°–75°24°
Low, likely
48°9°–54°12°
Wind
8 mph13 km/h, gusts 16 mph26 km/h
UV peak
3
Wednesday, Oct 28. Partly sunny. High 79°26°, low 53°12°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 54°12°
  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, 56°13°
  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 53.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
75°24°–79°26°
Low, likely
48°9°–55°13°
Wind
8 mph14 km/h, gusts 20 mph32 km/h
UV peak
4
Thursday, Oct 29. Mostly sunny. High 79°26°, low 51°11°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Cloudy, 58°14°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 79°26°
  Dry
3. Evening
  6 PM–midnight
  Clear, 65°18°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 54°12°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 79.
Night: Partly cloudy, with a low around 51.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
78°26°–80°27°
Low, likely
51°11°–57°14°
Wind
9 mph15 km/h, gusts 28 mph45 km/h
UV peak
4
Friday, Oct 30. Cloudy. High 77°25°, low 53°12°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Partly sunny, 57°14°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 78°26°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 65°18°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 57°14°
  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 53. Chance of precipitation is 20%.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
75°24°–80°27°
Low, likely
49°9°–57°14°
Wind
8 mph13 km/h, gusts 18 mph28 km/h
UV peak
4
Saturday, Oct 31. Cloudy. High 74°23°, low 59°15°. Rain 0.12 in3 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 62°16°
  30% chance
2. Afternoon
  noon–6 PM
  Cloudy, 75°24°
  30% chance
3. Evening
  6 PM–midnight
  Cloudy, 67°20°
  30% chance · 0.02 in0.4 mm
4. Overnight
  midnight–6 AM
  Cloudy, 65°19°
  40% chance · 0.11 in2.8 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
56°13°–62°17°
Wind
10 mph16 km/h, gusts 21 mph33 km/h
UV peak
2
Sunday, Nov 1. Showers. High 71°22°, low 61°16°. Rain 0.55 in14 mm, 50% chance. Mostly agree.
1. Morning
  6 AM–noon
  Drizzle, 65°18°
  50% chance · 0.14 in3.7 mm
2. Afternoon
  noon–6 PM
  Showers, 68°20°
  40% chance · 0.17 in4.2 mm
3. Evening
  6 PM–midnight
  Drizzle, 66°19°
  40% chance · 0.08 in1.9 mm
4. Overnight
  midnight–6 AM
  Clear, 58°15°
  40% chance · 0.13 in3.3 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°–74°23°
Low, likely
59°15°–64°18°
Wind
17 mph27 km/h, gusts 37 mph60 km/h
Monday, Nov 2. Drizzle. High 66°19°, low 56°13°. Rain 0.28 in7.1 mm, 40% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Drizzle, 60°15°
  30% chance · 0.13 in3.4 mm
2. Afternoon
  noon–6 PM
  Cloudy, 62°17°
  30% chance · 0.16 in4.1 mm
3. Evening
  6 PM–midnight
  Drizzle, 66°19°
  30% chance · 0.06 in1.6 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°–76°24°
Low, likely
48°9°–66°19°
Wind
22 mph35 km/h, gusts 39 mph63 km/h
UV peak
2

10 days15 days30 days

The outlook

Today
Dry, high 76°, low 48°.
Tomorrow
Dry, high 79°, low 50°, warming up.
Monday
Dry, high 78°, low 50°.
Rest of week
Highs 66–79°; 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

Mississippi River at St. Louis

23 mi

Below flood stage

Level: 8.1 ft
Flow: 172,000 cfs

Forecast peak 7.9 ft Sat 1 PM

Reading from Sat 8 AM · NWS gauge page

Mississippi River at Herculaneum

4.9 mi

Below flood stage

Level: 6.0 ft

Reading from Sat 7:30 AM · NWS gauge page

Meramec River at Arnold

11 mi

Below flood stage

Level: 5.8 ft
Flow: 7,210 cfs

Reading from Sat 8 AM · NWS gauge page

Meramec River at Fenton

16 mi

Below flood stage

Level: 1.3 ft

Reading from Sat 8:15 AM · NWS gauge page

Sun & moon

Sun

Daylight: 10 h 52 min; Losing 2 min 16 s a day; shortest Dec 21, 1 h 22 min less
Golden hour: 5:34–6:27 PM; Morning 7:02–7:55 AM
Blue hour: 6:27–6:38 PM; Morning 6:52–7:02 AM; first light 6:52 AM

Stars tonight? Poor

Clouds most of the night (about 39% cover).

Moon

Waxing gibbous

97% lit · growing

Today: sets 5:34 AM · rises 5:08 PM
Full moon: Oct 25
New moon: Nov 9

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

Valmeyer, 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 St. Louis

Mississippi River at Herculaneum

Meramec River at Arnold

Meramec River at Fenton

Sun & moon

Sun

Stars tonight? Poor

Moon