Observed 3:55 PM CDT at KSUS
Lake St. Louis, MO weather
Sunny and 75°24°, 10°6° warmer than a typical Oct 24.
Today: low 48°9° (likely 46°8° to 49°9°), high 76°24° (likely 73°23° to 76°24°).
Now 75°24°
Sunny
- Wind
- 6 mph9 km/h
- From the east. Up to 6 mph9 km/h through 4 AM
- Dew point
- 45°7°
- Comfortable
- UV tomorrow
- 4Moderate
- Moderate 11 AM–4 PM · peak 4
- Air quality
- 64Moderate
- Main pollutant: Ozone
- Pressure
- 30.3 inHg1026 hPa
- Falling · −0.04 inHg−1.5 hPa in 3 h
Next 2 hours
No precipitation expected in the next 2 hours.
From forecast models
Next 48 hours
This afternoonNear 75°24° · Clear
TonightDown to 50°10° by 5 AM · Partly cloudy
Tomorrow morningUp to 69°21° by 11 AM · Partly cloudy
Tomorrow afternoonUp to 78°26° by 3 PM · Mostly cloudy
Tomorrow nightDown to 52°11° by 5 AM · Mostly cloudy
Monday morningUp to 69°21° by 11 AM · Cloudy
Monday afternoonUp to 78°26° by 3 PM · Mostly cloudy
| Hour | Conditions | Temperature | Feels like | Precipitation | Wind | Humidity | Cloud cover | UV index |
|---|---|---|---|---|---|---|---|---|
| Sat 4p | Sunny | 76°24° (likely 72°22° to 76°24°) | 76°24° | 0% | 6 mph10 km/h from SE, gusts 8 mph12 km/h | 33% | 8% | 2 |
| Sat 5p | Sunny | 74°23° (likely 70°21° to 76°24°) | 74°23° | 0% | 3 mph5 km/h from SE, gusts 8 mph14 km/h | 37% | 24% | 1 |
| Sat 6p | Clear | 70°21° (likely 66°19° to 70°21°) | 70°21° | 0% | 3 mph5 km/h from SE, gusts 9 mph14 km/h | 44% | 11% | 0 |
| Sat 7p | Clear | 65°18° (likely 63°17° to 66°19°) | 65°18° | 0% | 3 mph5 km/h from SE, gusts 9 mph15 km/h | 54% | 8% | 0 |
| Sat 8p | Partly cloudy | 61°16° (likely 60°16° to 63°17°) | 61°16° | 0% | 2 mph3 km/h from SE, gusts 9 mph15 km/h | 62% | 44% | 0 |
| Sat 9p | Clear | 59°15° (likely 59°15° to 61°16°) | 59°15° | 0% | 2 mph3 km/h from SE, gusts 10 mph15 km/h | 67% | 16% | 0 |
| Sat 10p | Clear | 58°14° (likely 57°14° to 59°15°) | 58°14° | 0% | 2 mph3 km/h from SE, gusts 9 mph15 km/h | 72% | 18% | 0 |
| Sat 11p | Clear | 56°13° (likely 56°13° to 57°14°) | 56°13° | 0% | 2 mph3 km/h from SE, gusts 8 mph12 km/h | 74% | 8% | 0 |
| Sun 12a | Partly cloudy | 55°13° (likely 55°13° to 57°14°) | 55°13° | 0% | 1 mph2 km/h from SE, gusts 9 mph14 km/h | 77% | 19% | 0 |
| Sun 1a | Partly cloudy | 54°12° (likely 54°12° to 56°13°) | 54°12° | 0% | 1 mph2 km/h from SE, gusts 7 mph12 km/h | 80% | 49% | 0 |
| Sun 2a | Cloudy | 53°12° (likely 52°11° to 55°13°) | 53°12° | 0% | 1 mph2 km/h from SE, gusts 7 mph11 km/h | 80% | 58% | 0 |
| Sun 3a | Cloudy | 52°11° (likely 51°11° to 54°12°) | 52°11° | 0% | 1 mph2 km/h from SE, gusts 7 mph11 km/h | 83% | 58% | 0 |
| Sun 4a | Partly cloudy | 51°11° (likely 50°10° to 53°12°) | 51°11° | 0% | 1 mph2 km/h from SE, gusts 6 mph9 km/h | 83% | 70% | 0 |
| Sun 5a | Partly cloudy | 50°10° (likely 49°9° to 53°12°) | 50°10° | 0% | 1 mph2 km/h from SE, gusts 5 mph8 km/h | 86% | 47% | 0 |
| Sun 6a | Partly cloudy | 50°10° (likely 48°9° to 52°11°) | 50°10° | 0% | 1 mph2 km/h from S, gusts 4 mph7 km/h | 86% | 35% | 0 |
| Sun 7a | Sunny | 49°9° (likely 47°8° to 51°11°) | 49°9° | 0% | 1 mph2 km/h from S, gusts 3 mph5 km/h | 86% | 21% | 0 |
| Sun 8a | Cloudy | 50°10° (likely 48°9° to 52°11°) | 50°10° | 0% | 1 mph2 km/h from S, gusts 4 mph6 km/h | 86% | 62% | 0 |
| Sun 9a | Partly sunny | 57°14° (likely 53°12° to 57°14°) | 57°14° | 0% | 1 mph2 km/h from S, gusts 5 mph8 km/h | 77% | 58% | 1 |
| Sun 10a | Sunny | 64°18° (likely 61°16° to 65°18°) | 64°18° | 0% | 1 mph2 km/h from S, gusts 8 mph13 km/h | 63% | 34% | 2 |
| Sun 11a | Mostly cloudy | 69°21° (likely 66°19° to 71°22°) | 69°21° | 0% | 3 mph5 km/h from S, gusts 7 mph11 km/h | 53% | 51% | 3 |
| Sun 12p | Cloudy | 73°23° (likely 70°21° to 76°24°) | 73°23° | 0% | 3 mph5 km/h from S, gusts 6 mph9 km/h | 44% | 80% | 4 |
| Sun 1p | Cloudy | 76°24° (likely 73°23° to 78°26°) | 76°24° | 0% | 3 mph5 km/h from S, gusts 5 mph8 km/h | 39% | 80% | 4 |
| Sun 2p | Cloudy | 77°25° (likely 74°23° to 79°26°) | 77°25° | 0% | 3 mph5 km/h from SE, gusts 6 mph9 km/h | 37% | 81% | 4 |
| Sun 3p | Cloudy | 78°26° (likely 75°24° to 80°27°) | 78°26° | 0% | 5 mph8 km/h from SE, gusts 6 mph9 km/h | 35% | 81% | 4 |
| Sun 4p | Cloudy | 78°26° (likely 75°24° to 80°27°) | 78°26° | 0% | 3 mph5 km/h from SE, gusts 5 mph9 km/h | 35% | 80% | 2 |
| Sun 5p | Cloudy | 76°24° (likely 73°23° to 78°26°) | 76°24° | 0% | 2 mph3 km/h from SE, gusts 6 mph10 km/h | 39% | 80% | 1 |
| Sun 6p | Cloudy | 72°22° (likely 68°20° to 73°23°) | 72°22° | 0% | 1 mph2 km/h from SE, gusts 4 mph7 km/h | 46% | 79% | 0 |
| Sun 7p | Cloudy | 67°19° (likely 65°18° to 69°21°) | 67°19° | 0% | 2 mph3 km/h from SE, gusts 4 mph7 km/h | 56% | 80% | 0 |
| Sun 8p | Cloudy | 63°17° (likely 63°17° to 65°18°) | 63°17° | 0% | 2 mph3 km/h from SE, gusts 6 mph9 km/h | 65% | 81% | 0 |
| Sun 9p | Cloudy | 61°16° (likely 61°16° to 64°18°) | 61°16° | 0% | 1 mph2 km/h from SE, gusts 7 mph12 km/h | 70% | 80% | 0 |
| Sun 10p | Cloudy | 59°15° (likely 59°15° to 61°16°) | 59°15° | 0% | 1 mph2 km/h from SE, gusts 8 mph13 km/h | 72% | 81% | 0 |
| Sun 11p | Cloudy | 57°14° (likely 57°14° to 60°16°) | 57°14° | 0% | 1 mph2 km/h from SE, gusts 7 mph11 km/h | 77% | 81% | 0 |
| Mon 12a | Cloudy | 56°13° (likely 56°13° to 59°15°) | 56°13° | 0% | 1 mph2 km/h from S, gusts 7 mph11 km/h | 77% | 81% | 0 |
| Mon 1a | Cloudy | 55°13° (likely 55°13° to 58°14°) | 55°13° | 0% | 1 mph2 km/h from S, gusts 8 mph12 km/h | 80% | 81% | 0 |
| Mon 2a | Cloudy | 54°12° (likely 54°12° to 57°14°) | 54°12° | 0% | 1 mph2 km/h from S, gusts 8 mph12 km/h | 80% | 81% | 0 |
| Mon 3a | Cloudy | 53°12° (likely 53°12° to 56°13°) | 53°12° | 0% | 1 mph2 km/h from S, gusts 8 mph12 km/h | 83% | 82% | 0 |
| Mon 4a | Cloudy | 53°12° (likely 53°12° to 56°13°) | 53°12° | 0% | 1 mph2 km/h from S, gusts 7 mph12 km/h | 80% | 82% | 0 |
| Mon 5a | Cloudy | 52°11° (likely 52°11° to 56°13°) | 52°11° | 0% | 1 mph2 km/h from S, gusts 8 mph13 km/h | 83% | 85% | 0 |
| Mon 6a | Cloudy | 52°11° (likely 52°11° to 55°13°) | 52°11° | 0% | 1 mph2 km/h from S, gusts 8 mph14 km/h | 83% | 88% | 0 |
| Mon 7a | Cloudy | 51°11° (likely 51°11° to 56°13°) | 51°11° | 0% | 1 mph2 km/h from S, gusts 8 mph12 km/h | 86% | 90% | 0 |
| Mon 8a | Cloudy | 52°11° (likely 52°11° to 57°14°) | 52°11° | 0% | 1 mph2 km/h from S, gusts 7 mph11 km/h | 86% | 85% | 0 |
| Mon 9a | Cloudy | 57°14° (likely 57°14° to 60°16°) | 57°14° | 0% | 1 mph2 km/h from SW, gusts 7 mph11 km/h | 77% | 77% | 1 |
| Mon 10a | Cloudy | 64°18° (likely 63°17° to 68°20°) | 64°18° | 0% | 1 mph2 km/h from SW, gusts 11 mph18 km/h | 65% | 89% | 2 |
| Mon 11a | Cloudy | 69°21° (likely 67°19° to 73°23°) | 69°21° | 0% | 1 mph2 km/h from SW, gusts 11 mph18 km/h | 55% | 89% | 3 |
| Mon 12p | Cloudy | 72°22° (likely 70°21° to 74°23°) | 72°22° | 0% | 2 mph3 km/h from SW, gusts 10 mph16 km/h | 49% | 87% | 3 |
| Mon 1p | Cloudy | 75°24° (likely 72°22° to 76°24°) | 75°24° | 0% | 2 mph3 km/h from SW, gusts 9 mph15 km/h | 43% | 86% | 4 |
| Mon 2p | Cloudy | 77°25° (likely 71°22° to 77°25°) | 77°25° | 0% | 2 mph3 km/h from SW, gusts 8 mph14 km/h | 40% | 88% | 4 |
| Mon 3p | Cloudy | 78°26° (likely 72°22° to 78°26°) | 78°26° | 0% | 2 mph3 km/h from S, gusts 7 mph12 km/h | 39% | 74% | 3 |
Days ahead
Today, Oct 24. Partly sunny. High 76°24°, low 48°9°. Typical 66°19° / 42°6°. Dry. Mostly agree.
Afternoon
noon–6 PM
Sunny, 76°24°Dry
Evening
6 PM–midnight
Clear, 61°16°Dry
Overnight
midnight–6 AM
Cloudy, 50°10°Dry
Official NWS forecast
Today: Mostly sunny, with a high near 76. Southeast wind around 6 mph.
Tonight: Partly cloudy, with a low around 48. Southeast wind around 3 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 73°23°–76°24°
- Low, likely
- 46°8°–49°9°
- Typical high / low
- 66°19° / 42°6°
- Wind
- 7 mph12 km/h, gusts 13 mph21 km/h
- UV peak
- 4
Tomorrow, Oct 25. Cloudy. High 78°26°, low 51°11°. Typical 66°19° / 42°6°. Dry. Mostly agree.
Morning
6 AM–noon
Partly sunny, 50°10°Dry
Afternoon
noon–6 PM
Cloudy, 78°26°Dry
Evening
6 PM–midnight
Cloudy, 63°17°Dry
Overnight
midnight–6 AM
Cloudy, 52°11°Dry
Official NWS forecast
Day: Partly sunny, with a high near 78. Southeast wind 1 to 5 mph.
Night: Mostly cloudy, with a low around 51. South wind around 2 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 75°24°–80°27°
- Low, likely
- 47°8°–51°11°
- Typical high / low
- 66°19° / 42°6°
- Wind
- 6 mph10 km/h, gusts 13 mph20 km/h
- UV peak
- 4
Monday, Oct 26. Cloudy. High 78°26°, low 51°11°. Typical 65°18° / 41°5°. Dry. Mostly agree.
Morning
6 AM–noon
Cloudy, 52°11°Dry
Afternoon
noon–6 PM
Cloudy, 78°26°Dry
Evening
6 PM–midnight
Partly cloudy, 63°17°Dry
Overnight
midnight–6 AM
Cloudy, 54°12°Dry
Official NWS forecast
Day: Partly sunny. High near 78, with temperatures falling to around 74 in the afternoon. South wind around 2 mph.
Night: Partly cloudy, with a low around 51.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 73°23°–78°26°
- Low, likely
- 51°11°–55°13°
- Typical high / low
- 65°18° / 41°5°
- Wind
- 8 mph13 km/h, gusts 16 mph26 km/h
- UV peak
- 4
Tuesday, Oct 27. Cloudy. High 76°24°, low 52°11°. Typical 65°18° / 41°5°. Dry. Forecasts agree.
Morning
6 AM–noon
Cloudy, 55°13°Dry
Afternoon
noon–6 PM
Cloudy, 73°23°Dry
Evening
6 PM–midnight
Cloudy, 62°17°Dry
Overnight
midnight–6 AM
Clear, 55°13°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 76.
Night: Mostly cloudy, with a low around 52.
Forecasts agreeIndependent forecasts are close; the range is narrow.
- High, likely
- 71°22°–76°24°
- Low, likely
- 52°11°–55°13°
- Typical high / low
- 65°18° / 41°5°
- Wind
- 9 mph14 km/h, gusts 21 mph34 km/h
- UV peak
- 4
Wednesday, Oct 28. Partly sunny. High 80°27°, low 55°13°. Typical 64°18° / 41°5°. Dry. Mostly agree.
Morning
6 AM–noon
Mostly sunny, 57°14°Dry
Afternoon
noon–6 PM
Sunny, 78°26°Dry
Evening
6 PM–midnight
Clear, 66°19°Dry
Overnight
midnight–6 AM
Clear, 57°14°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 80.
Night: Mostly clear, with a low around 55.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 76°24°–80°27°
- Low, likely
- 51°11°–56°13°
- Typical high / low
- 64°18° / 41°5°
- Wind
- 11 mph18 km/h, gusts 20 mph32 km/h
- UV peak
- 4
Thursday, Oct 29. Mostly sunny. High 82°28°, low 56°13°. Typical 64°18° / 40°4°. Dry. Mostly agree.
Morning
6 AM–noon
Sunny, 59°15°Dry
Afternoon
noon–6 PM
Sunny, 81°27°Dry
Evening
6 PM–midnight
Clear, 68°20°Dry
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 82.
Night: Partly cloudy, with a low around 56.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 79°26°–83°28°
- Low, likely
- 53°12°–58°14°
- Typical high / low
- 64°18° / 40°4°
- Wind
- 12 mph19 km/h, gusts 28 mph44 km/h
- UV peak
- 4
Friday, Oct 30. Cloudy. High 81°27°, low 58°14°. Typical 64°18° / 40°4°. Dry. Mostly agree.
Morning
6 AM–noon
Partly sunny, 59°15°Dry
Afternoon
noon–6 PM
Cloudy, 79°26°Dry
Evening
6 PM–midnight
Cloudy, 68°20°Dry
Overnight
midnight–6 AM
Cloudy, 59°15°20% chance
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 81.
Night: Mostly cloudy, with a low around 58.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 76°24°–81°27°
- Low, likely
- 54°12°–59°15°
- Typical high / low
- 64°18° / 40°4°
- Wind
- 12 mph19 km/h, gusts 20 mph32 km/h
- UV peak
- 3
Saturday, Oct 31. Drizzle. High 72°22°, low 61°16°. Typical 63°17° / 40°4°. Rain 0.14 in3.6 mm, 50% chance. Mostly agree.
Morning
6 AM–noon
Cloudy, 61°16°30% chance
Afternoon
noon–6 PM
Drizzle, 74°23°40% chance
Evening
6 PM–midnight
Drizzle, 66°19°50% chance · 0.12 in3.2 mm
Overnight
midnight–6 AM
Drizzle, 64°18°50% chance · 0.18 in4.6 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.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 70°21°–76°24°
- Low, likely
- 59°15°–64°18°
- Typical high / low
- 63°17° / 40°4°
- Wind
- 16 mph26 km/h, gusts 28 mph44 km/h
- UV peak
- 1
Sunday, Nov 1. Drizzle. High 75°24°, low 60°16°. Typical 63°17° / 39°4°. Rain 0.46 in12 mm, 50% chance. Mostly agree.
Morning
6 AM–noon
Cloudy, 66°19°40% chance · 0.04 in1.1 mm
Afternoon
noon–6 PM
Drizzle, 75°24°30% chance · 0.03 in0.9 mm
Evening
6 PM–midnight
Drizzle, 64°18°30% chance · 0.14 in3.6 mm
Overnight
midnight–6 AM
Partly cloudy, 52°11°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.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 72°22°–77°25°
- Low, likely
- 53°12°–62°17°
- Typical high / low
- 63°17° / 39°4°
- Wind
- 21 mph33 km/h, gusts 39 mph63 km/h
- UV peak
- 3
Monday, Nov 2. Drizzle. High 63°17°, low 53°12°. Typical 62°17° / 39°4°. Rain 0.39 in9.9 mm, 40% chance. Forecasts differ.
Morning
6 AM–noon
Cloudy, 53°12°40% chance · 0.11 in2.7 mm
Afternoon
noon–6 PM
Drizzle, 57°14°40% chance · 0.15 in3.7 mm
Evening
6 PM–midnight
Drizzle, 54°12°30% chance · 0.06 in1.5 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
- 51°11°–71°22°
- Low, likely
- 39°4°–67°19°
- Typical high / low
- 62°17° / 39°4°
- Wind
- 26 mph42 km/h, gusts 41 mph66 km/h
- UV peak
- 2
The outlook
Today
Dry, high 76°, low 48°.
Tomorrow
Dry, high 78°, low 51°.
Monday
Dry, high 78°, low 51°.
Rest of week
Highs 63–82°; chance of precipitation on Saturday, 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
For your home
What this week’s weather means for heating, cooling, pipes and fresh air.
Heating this week
About 86% less heating than a typical week.
Heating degree days, base 65°F
Comfort
Dry air outside (dew point 45°F).
Open the windows?
Today, 5:00 PM–8:00 PM
Good stretch to open the windows.
Is this typical?
Oct 24, today vs a typical year
Today’s expected high is 10°6° warmer than typical.
- Normal high / low
- 66°19° / 42°6°
- Forecast high / low
- 76°24° / 48°9°
- Record high
- 84°29° in 2012
- Record low
- 24°−4° in 2006
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
Lake St. Louis weather by month: normals, records, snow and freeze dates
Sun & moon
Sun
Sunrise 7:21 AM, sunset 6:12 PM.
- Daylight
- 10 h 51 min
- Losing 2 min 21 s a day; shortest Dec 21, 1 h 24 min less
- Golden hour
- 5:35–6:29 PM
- Morning 7:05–7:58 AM
- Blue hour
- 6:29–6:39 PM
- Morning 6:54–7:05 AM; first light 6:54 AM
Stars tonight? Fair
Mostly clear 9 PM–1 AM, but the moon is 99% lit and up.
Moon
Waxing gibbous
98% lit · growing
- Today
- sets 5:36 AM · rises 5:09 PM
- Full moon
- Oct 25
- New moon
- Nov 9
