Observed 3:15 AM CDT at KSTL

Florissant, MO weather

Clear and 54°12°, 10°6° warmer than a typical Oct 24.

Mostly agree

Now 54°12°

Clear

Wind: 5 mph7 km/h; From the east-southeast. 35–5 mph8 km/h through 3 PM
Dew point: 45°7°; Comfortable
UV index: 0Low; Moderate 11 AM–4 PM · peak 4
Air quality: 64Moderate; Main pollutant: PM10 (dust)
Pressure: 30.28 inHg1025 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

Good hours for

Low 51°11° today at 6 AM
Above 60°16° today by 10 AM
High 76°24° today at 4 PM

TonightNear 53°12° · Partly cloudy
This morningUp to 65°18° by 11 AM · Partly cloudy
This afternoonUp to 76°24° by 4 PM · Mostly cloudy
TonightDown to 53°12° by 5 AM · Partly cloudy
Tomorrow morningUp to 68°20° by 11 AM · Mostly cloudy
Tomorrow afternoonUp to 78°26° by 4 PM · Mostly cloudy
Tomorrow nightDown to 58°14° by 2 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 3a	Mostly clear	54°12° (likely 50°10° to 54°12°)	54°12°	0%	3 mph5 km/h from SE, gusts 7 mph12 km/h	77%	29%	0
Sat 4a	Partly cloudy	53°12° (likely 49°9° to 53°12°)	53°12°	0%	3 mph5 km/h from SE, gusts 8 mph13 km/h	80%	16%	0
Sat 5a	Partly cloudy	52°11° (likely 48°9° to 52°11°)	52°11°	0%	3 mph5 km/h from SE, gusts 6 mph9 km/h	83%	41%	0
Sat 6a	Clear	51°11° (likely 47°8° to 51°11°)	51°11°	0%	3 mph5 km/h from SE, gusts 6 mph10 km/h	83%	18%	0
Sat 7a	Sunny	51°11° (likely 46°8° to 51°11°)	51°11°	0%	3 mph5 km/h from SE, gusts 6 mph10 km/h	83%	10%	0
Sat 8a	Mostly sunny	51°11° (likely 47°8° to 52°11°)	51°11°	0%	3 mph5 km/h from SE, gusts 6 mph10 km/h	86%	17%	0
Sat 9a	Partly sunny	55°13° (likely 52°11° to 56°13°)	55°13°	0%	5 mph8 km/h from SE, gusts 7 mph11 km/h	83%	17%	1
Sat 10a	Partly sunny	61°16° (likely 58°14° to 61°16°)	61°16°	0%	5 mph8 km/h from SE, gusts 10 mph17 km/h	67%	41%	2
Sat 11a	Partly sunny	65°18° (likely 63°17° to 65°18°)	65°18°	0%	5 mph8 km/h from SE, gusts 11 mph18 km/h	58%	69%	3
Sat 12p	Cloudy	70°21° (likely 66°19° to 70°21°)	70°21°	0%	5 mph8 km/h from SE, gusts 9 mph15 km/h	47%	75%	4
Sat 1p	Cloudy	73°23° (likely 69°21° to 73°23°)	73°23°	0%	5 mph8 km/h from SE, gusts 8 mph13 km/h	41%	80%	4
Sat 2p	Partly sunny	74°23° (likely 71°22° to 74°23°)	74°23°	0%	5 mph8 km/h from SE, gusts 7 mph12 km/h	40%	73%	4
Sat 3p	Cloudy	75°24° (likely 72°22° to 75°24°)	75°24°	0%	5 mph8 km/h from SE, gusts 8 mph12 km/h	37%	67%	3
Sat 4p	Sunny	76°24° (likely 71°22° to 76°24°)	76°24°	0%	5 mph8 km/h from SE, gusts 8 mph13 km/h	36%	41%	2
Sat 5p	Partly sunny	74°23° (likely 69°21° to 74°23°)	74°23°	0%	5 mph8 km/h from SE, gusts 9 mph14 km/h	40%	53%	1
Sat 6p	Partly cloudy	71°22° (likely 66°19° to 71°22°)	71°22°	0%	3 mph5 km/h from SE, gusts 7 mph11 km/h	46%	45%	0
Sat 7p	Clear	68°20° (likely 63°17° to 68°20°)	68°20°	0%	3 mph5 km/h from SE, gusts 7 mph12 km/h	49%	40%	0
Sat 8p	Clear	63°17° (likely 60°16° to 63°17°)	63°17°	0%	3 mph5 km/h from SE, gusts 8 mph12 km/h	60%	43%	0
Sat 9p	Partly cloudy	61°16° (likely 59°15° to 61°16°)	61°16°	0%	3 mph5 km/h from SE, gusts 8 mph13 km/h	62%	51%	0
Sat 10p	Partly cloudy	60°16° (likely 57°14° to 60°16°)	60°16°	0%	3 mph5 km/h from SE, gusts 8 mph13 km/h	64%	55%	0
Sat 11p	Partly cloudy	58°14° (likely 56°13° to 58°14°)	58°14°	0%	3 mph5 km/h from SE, gusts 9 mph15 km/h	67%	51%	0
Sun 12a	Partly cloudy	57°14° (likely 55°13° to 57°14°)	57°14°	0%	2 mph3 km/h from SE, gusts 9 mph14 km/h	69%	38%	0
Sun 1a	Mostly clear	57°14° (likely 54°12° to 57°14°)	57°14°	0%	2 mph3 km/h from SE, gusts 8 mph14 km/h	69%	16%	0
Sun 2a	Partly cloudy	56°13° (likely 53°12° to 56°13°)	56°13°	0%	2 mph3 km/h from SE, gusts 7 mph12 km/h	72%	33%	0
Sun 3a	Mostly clear	55°13° (likely 52°11° to 55°13°)	55°13°	0%	2 mph3 km/h from SE, gusts 7 mph11 km/h	74%	46%	0
Sun 4a	Clear	54°12° (likely 51°11° to 54°12°)	54°12°	0%	2 mph3 km/h from SE, gusts 6 mph10 km/h	77%	13%	0
Sun 5a	Partly cloudy	53°12° (likely 50°10° to 53°12°)	53°12°	0%	2 mph3 km/h from SE, gusts 5 mph9 km/h	80%	50%	0
Sun 6a	Partly cloudy	53°12° (likely 49°9° to 53°12°)	53°12°	0%	1 mph2 km/h from SE, gusts 5 mph8 km/h	77%	46%	0
Sun 7a	Partly sunny	52°11° (likely 50°10° to 52°11°)	52°11°	0%	1 mph2 km/h from SE, gusts 5 mph9 km/h	80%	53%	0
Sun 8a	Partly sunny	53°12° (likely 50°10° to 53°12°)	53°12°	0%	2 mph3 km/h from SE, gusts 5 mph9 km/h	83%	57%	0
Sun 9a	Mostly sunny	58°14° (likely 55°13° to 58°14°)	58°14°	0%	2 mph3 km/h from SE, gusts 6 mph9 km/h	75%	70%	1
Sun 10a	Cloudy	64°18° (likely 60°16° to 64°18°)	64°18°	0%	2 mph3 km/h from SE, gusts 7 mph11 km/h	63%	78%	2
Sun 11a	Cloudy	68°20° (likely 64°18° to 68°20°)	68°20°	0%	2 mph3 km/h from S, gusts 7 mph11 km/h	55%	80%	3
Sun 12p	Cloudy	72°22° (likely 69°21° to 72°22°)	72°22°	0%	2 mph3 km/h from S, gusts 6 mph10 km/h	48%	78%	4
Sun 1p	Cloudy	76°24° (likely 71°22° to 76°24°)	76°24°	0%	3 mph5 km/h from S, gusts 5 mph7 km/h	42%	78%	4
Sun 2p	Cloudy	77°25° (likely 73°23° to 77°25°)	77°25°	0%	2 mph3 km/h from S, gusts 4 mph7 km/h	40%	77%	4
Sun 3p	Cloudy	77°25° (likely 74°23° to 77°25°)	77°25°	0%	2 mph3 km/h from SE, gusts 4 mph7 km/h	39%	81%	3
Sun 4p	Cloudy	78°26° (likely 73°23° to 78°26°)	78°26°	0%	3 mph5 km/h from SE, gusts 4 mph7 km/h	36%	81%	2
Sun 5p	Cloudy	77°25° (likely 72°22° to 77°25°)	77°25°	0%	2 mph3 km/h from SE, gusts 4 mph6 km/h	40%	82%	1
Sun 6p	Cloudy	74°23° (likely 68°20° to 74°23°)	74°23°	0%	2 mph3 km/h from SE, gusts 4 mph6 km/h	44%	86%	0
Sun 7p	Cloudy	70°21° (likely 65°18° to 70°21°)	70°21°	0%	1 mph2 km/h from SE, gusts 4 mph6 km/h	51%	88%	0
Sun 8p	Cloudy	65°18° (likely 63°17° to 65°18°)	65°18°	0%	1 mph2 km/h from SE, gusts 5 mph8 km/h	60%	92%	0
Sun 9p	Cloudy	63°17° (likely 61°16° to 63°17°)	63°17°	0%	1 mph2 km/h from SE, gusts 6 mph9 km/h	65%	92%	0
Sun 10p	Cloudy	62°17° (likely 59°15° to 62°17°)	62°17°	0%	1 mph2 km/h from SE, gusts 6 mph10 km/h	67%	92%	0
Sun 11p	Cloudy	61°16° (likely 58°14° to 61°16°)	61°16°	0%	1 mph2 km/h from SE, gusts 8 mph12 km/h	70%	91%	0
Mon 12a	Cloudy	60°16° (likely 57°14° to 61°16°)	60°16°	0%	1 mph2 km/h from S, gusts 7 mph11 km/h	69%	90%	0
Mon 1a	Cloudy	59°15° (likely 56°13° to 60°16°)	59°15°	0%	1 mph2 km/h from S, gusts 6 mph9 km/h	72%	91%	0
Mon 2a	Cloudy	58°14° (likely 54°12° to 62°17°)	58°14°	0%	1 mph2 km/h from S, gusts 4 mph7 km/h	75%	90%	0

Days ahead

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

Today, Oct 24. Cloudy. High 76°24°, low 51°11°. Typical 66°19° / 46°8°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Partly sunny, 51°11°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 76°24°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 63°17°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 53°12°
  Dry
Official NWS forecast
Today: Mostly sunny, with a high near 76. Southeast wind around 5 mph.
Tonight: Partly cloudy, with a low around 51. Southeast wind around 3 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
72°22°–76°24°
Low, likely
46°8°–51°11°
Typical high / low
66°19° / 46°8°
Wind
7 mph10 km/h, gusts 14 mph22 km/h
UV peak
4
Tomorrow, Oct 25. Cloudy. High 79°26°, low 55°13°. Typical 65°18° / 46°8°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Mostly sunny, 53°12°
  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, 56°13°
  Dry
Official NWS forecast
Day: Partly sunny, with a high near 79. Southeast wind around 3 mph.
Night: Mostly cloudy, with a low around 55. Southeast wind around 2 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
74°23°–79°26°
Low, likely
49°9°–55°13°
Typical high / low
65°18° / 46°8°
Wind
6 mph9 km/h, gusts 13 mph21 km/h
UV peak
4
Monday, Oct 26. Cloudy. High 78°26°, low 54°12°. Typical 65°18° / 45°7°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Cloudy, 56°13°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 76°24°
  Dry
3. Evening
  6 PM–midnight
  Clear, 63°17°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 55°13°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 78.
Night: Mostly cloudy, with a low around 54.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
75°24°–78°26°
Low, likely
52°11°–58°14°
Typical high / low
65°18° / 45°7°
Wind
7 mph10 km/h
UV peak
4
Tuesday, Oct 27. Cloudy. High 76°24°, low 55°13°. Typical 64°18° / 45°7°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 56°13°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 73°23°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 64°18°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 56°13°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly cloudy, with a high near 76.
Night: Mostly cloudy, with a low around 55.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
71°22°–76°24°
Low, likely
50°10°–58°14°
Typical high / low
64°18° / 45°7°
Wind
8 mph14 km/h, gusts 21 mph34 km/h
UV peak
3
Wednesday, Oct 28. Partly sunny. High 79°26°, low 57°14°. Typical 64°18° / 44°7°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Partly sunny, 57°14°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 76°25°
  Dry
3. Evening
  6 PM–midnight
  Clear, 67°19°
  Dry
4. 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 79.
Night: Mostly clear, with a low around 57.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
75°24°–79°26°
Low, likely
53°12°–57°14°
Typical high / low
64°18° / 44°7°
Wind
9 mph15 km/h, gusts 20 mph31 km/h
UV peak
4
Thursday, Oct 29. Mostly sunny. High 78°26°, low 55°13°. Typical 64°18° / 44°7°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 59°15°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 76°25°
  Dry
3. Evening
  6 PM–midnight
  Clear, 66°19°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 58°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 55.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
75°24°–80°27°
Low, likely
53°12°–59°15°
Typical high / low
64°18° / 44°7°
Wind
12 mph19 km/h, gusts 28 mph45 km/h
UV peak
4
Friday, Oct 30. Partly sunny. High 77°25°, low 57°14°. Typical 63°17° / 44°7°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Partly sunny, 60°15°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 78°26°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 68°20°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 61°16°
  20% chance
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 77.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
76°24°–80°27°
Low, likely
55°13°–60°16°
Typical high / low
63°17° / 44°7°
Wind
8 mph13 km/h, gusts 23 mph37 km/h
UV peak
4
Saturday, Oct 31. Cloudy. High 74°23°, low 60°16°. Typical 63°17° / 43°6°. Rain 0.17 in4.3 mm, 40% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 64°18°
  30% chance
2. Afternoon
  noon–6 PM
  Drizzle, 75°24°
  30% chance
3. Evening
  6 PM–midnight
  Rain, 68°20°
  40% chance · 0.09 in2.4 mm
4. Overnight
  midnight–6 AM
  Drizzle, 64°18°
  40% chance · 0.01 in0.3 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.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
70°21°–81°27°
Low, likely
58°14°–62°17°
Typical high / low
63°17° / 43°6°
Wind
13 mph21 km/h, gusts 36 mph58 km/h
Sunday, Nov 1. Drizzle. High 73°23°, low 62°17°. Typical 62°17° / 43°6°. Rain 0.27 in6.9 mm, 40% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 64°18°
  40% chance · 0.04 in1.1 mm
2. Afternoon
  noon–6 PM
  Drizzle, 72°22°
  40% chance · 0.07 in1.7 mm
3. Evening
  6 PM–midnight
  Drizzle, 66°19°
  40% chance · 0.13 in3.3 mm
4. Overnight
  midnight–6 AM
  Cloudy, 58°15°
  40% chance · 0.1 in2.5 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
69°21°–77°25°
Low, likely
57°14°–65°18°
Typical high / low
62°17° / 43°6°
Wind
18 mph29 km/h, gusts 41 mph65 km/h
UV peak
3
Monday, Nov 2. Drizzle. High 68°20°, low 56°13°. Typical 62°17° / 42°6°. Rain 0.31 in7.9 mm, 40% chance. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 60°15°
  30% chance · 0.06 in1.6 mm
2. Afternoon
  noon–6 PM
  Cloudy, 62°16°
  30% chance · 0.07 in1.8 mm
3. Evening
  6 PM–midnight
  Cloudy, 59°15°
  20% chance · 0.03 in0.7 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
65°18°–72°22°
Low, likely
52°11°–59°15°
Typical high / low
62°17° / 42°6°
Wind
13 mph21 km/h, gusts 37 mph60 km/h
UV peak
3

10 days15 days30 days

The outlook

Today
Dry, high 76°, low 51°.
Tomorrow
Dry, high 79°, low 55°, warming up.
Monday
Dry, high 78°, low 54°.
Rest of week
Highs 68–79°; 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

Missouri River at St. Charles

7.8 mi

Below flood stage

Level: 12.4 ft
Flow: 65,200 cfs

Forecast peak 12.4 ft Sat 7 AM

Reading from Sat 2 AM · NWS gauge page

Mississippi River at Mel Price (Alton) Lock and Dam

11 mi

Below flood stage

Level: 7.7 ft
Flow: 124,000 cfs

Forecast peak 7.6 ft Sat 7 AM

Reading from Sat 2 AM · NWS gauge page

Mississippi River at Grafton

13 mi

Below flood stage

Level: 15.6 ft
Flow: 151,000 cfs

Forecast peak 15.7 ft Sat 7 AM

Reading from Sat 2 AM · NWS gauge page

Mississippi River at St. Louis

14 mi

Below flood stage

Level: 8.2 ft
Flow: 173,000 cfs

Forecast peak 8.0 ft Sat 7 AM

Reading from Sat 2 AM · NWS gauge page

For your home

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

Heating this week

About 87% less heating than a typical week.

This week 10Typical 73

Heating degree days, base 65°F

Comfort

Dry air outside (dew point 45°F).

Open the windows?

Today, 10:00 AM–10:00 PM

Good stretch to open the windows.

Is this typical?

St. Louis Lambert International Airport · official normals 1991–2020 · records 1874–2026

Oct 24, today vs a typical year

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

Last 7 days vs normal

On average 2°1° warmer than normal (daily mean temperature).

−4°−2°SunOct 18
−1°MonOct 19
+3°+2°TueOct 20
+5°+3°WedOct 21
+6°+3°ThuOct 22
—FriOct 23
—SatOct 24

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

Sun & moon

Sun

Daylight: 10 h 51 min; Losing 2 min 16 s a day; shortest Dec 21, 1 h 24 min less
Golden hour: 5:33–6:27 PM; Morning 7:03–7:56 AM
Blue hour: 6:27–6:37 PM; Morning 6:52–7:03 AM; first light 6:52 AM

Stars tonight? Poor

Clouds most of the night (about 26% cover).

Moon

Waxing gibbous

96% lit · growing

Today: sets 5:35 AM · rises 5:07 PM
Full moon: Oct 25
New moon: Nov 9

Looking northeast from Florissant. The highest point on the skyline is about 3,800 ft, 6 mi away.Skyline from USGS elevation data, heights drawn up to 4× taller. Sky, sun and moon as they are now.

Florissant, 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 St. Charles

Mississippi River at Mel Price (Alton) Lock and Dam

Mississippi River at Grafton

Mississippi River at St. Louis

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