O FALLON, MO 63366 Weather Forecast & Current Conditions

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63366 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
SPIRIT OF ST. LOUIS, MO Current Weather
2:54 PM CDT JUL 16, 2025
Clear 93°F
Feels Like:	102°F
Dewpoint:	73°F
Rel. Hum.:	52%
Visibility:	10 miles
Wind:	SW at 15 mph, gusts to 24
Pressure:	29.83 inches
Last 72 hours
Local Area Snow Depth
Missouri Current Weather
Missouri MOS Forecast Weather

Regional Weather Maps

(Automated weather data from NWS/FAA)

63366 WEATHER FORECAST
10-Day model forecast maps 2025 Hurricanes	O FALLON, MO 63366 Weather Forecast	Snowfall Forecast pages Snow Depth pages

THIS AFTERNOON
Mostly sunny with a slight chance of showers and thunderstorms. Near steady temperature in the lower 90s. Southwest winds 5 to 10 mph. Chance of rain 20 percent. Heat index values up to 107.

TONIGHT
Mostly cloudy with a slight chance of showers and thunderstorms. Humid with lows in the mid 70s. Southwest winds 5 to 10 mph. Chance of rain 20 percent. Heat index values up to 103 early in the evening.

THURSDAY
Partly sunny. A chance of showers and thunderstorms in the afternoon. Humid with highs in the upper 80s. Northwest winds 5 to 10 mph, becoming north in the afternoon. Chance of rain 50 percent. Heat index values up to 100.

THURSDAY NIGHT
Mostly cloudy with a chance of showers. A chance of thunderstorms, mainly in the evening. Lows in the lower 70s. Northeast winds around 5 mph. Chance of rain 50 percent.

FRIDAY
Mostly cloudy with a chance of showers and thunderstorms. Humid with highs in the upper 80s. Southeast winds around 5 mph. Chance of rain 50 percent.

FRIDAY NIGHT
Mostly cloudy with a slight chance of showers and thunderstorms. Lows in the lower 70s. Chance of rain 20 percent.

SATURDAY THROUGH SUNDAY NIGHT
Partly cloudy with a chance of showers and thunderstorms. Highs in the lower 90s. Lows in the mid 70s. Chance of rain 40 percent. Heat index values up to 105.

MONDAY
Mostly sunny with a slight chance of showers and thunderstorms. Hot with highs in the mid 90s. Chance of rain 20 percent. Heat index values up to 110.

MONDAY NIGHT
Mostly clear. A slight chance of showers and thunderstorms in the evening. Lows in the upper 70s. Chance of rain 20 percent. Heat index values up to 105 early in the evening.

TUESDAY
Sunny, hot with highs in the upper 90s. Heat index values up to 110.

63366 WEATHER SATELLITE LOOPS

Visible Weather Satellite
O FALLON, MO 63366

Infrared Weather Satellite
O FALLON, MO 63366

63366 WEATHER RADAR LOOP

NEXRAD Weather Radar
O FALLON, MO 63366

MOS COMPUTER WEATHER FORECAST

SPIRIT OF ST. LOUIS, MO 3 hourly weather forecast

weather forecast created 6:00 AM MDT 7/16/2025

DAY/DATE &
WEATHER FORECAST SUMMARY

Wednesday
16 JUL 2025

1 PM

90°

100°

Clear

8%

0% Thunder
( 32% severe)

WSW 8

60%

74°

High 92°

4 PM

91°

99°

Partly Cloudy

WSW 8

54%

72°

Partly Cloudy

7 PM

88°

96°

Partly Cloudy

11%
RAIN
<.01 in

0% Thunder
( 33% severe)

WSW 7

61%

73°

10 PM

81°

86°

Partly Cloudy

SW 6

79%

74°

Thursday
17 JUL 2025

1 AM

78°

80°

Partly Cloudy

17%
RAIN
<.01 in

0% Thunder
( 29% severe)

SW 6

85%

73°

Low 73°

4 AM

76°

76°

Partly Cloudy

WSW 5

90%

73°

High 87°

7 AM

76°

76°

Mostly Cloudy

12%
RAIN
<.01 in

0% Thunder
( 21% severe)

NW 5

87%

72°

Mostly Cloudy

Chance of Rain

10 AM

80°

84°

Mostly Cloudy

N 6

79%

73°

1 PM

83°

89°

Partly Cloudy

44%
RAIN
***

0% Thunder
( 44% severe)

N 7

72%

73°

4 PM

83°

88°

Partly Cloudy

N 7

70%

72°

7 PM

81°

85°

Mostly Cloudy

31%
RAIN
1–2 in

0% Thunder
( 40% severe)

NNE 5

74%

72°

10 PM

75°

75°

Mostly Cloudy

NE 2

90%

72°

Friday
18 JUL 2025

1 AM

73°

73°

Mostly Cloudy

17%
RAIN
.01–.1 in

0% Thunder
( 23% severe)

ENE 1

93%

71°

Low 70°

4 AM

71°

71°

Mostly Cloudy

ENE 1

97%

70°

High 85°

7 AM

72°

72°

Mostly Cloudy

26%
RAIN
.01–.1 in

0% Thunder
( 24% severe)

ENE 2

93%

70°

Mostly Cloudy

Chance of Rain

10 AM

77°

79°

Mostly Cloudy

ESE 3

82%

71°

1 PM

82°

87°

Mostly Cloudy

34%
RAIN
***

0% Thunder
( 40% severe)

SSE 5

74%

73°

4 PM

82°

87°

Mostly Cloudy

S 5

72%

72°

7 PM

81°

86°

Mostly Cloudy

SE 3

77%

73°


SPIRIT OF ST. LOUIS, MO extended weather forecast
Saturday 19 JUL 2025	Sunday 20 JUL 2025	Monday 21 JUL 2025	Tuesday 22 JUL 2025	Wednesday 23 JUL 2025
Low 74°	Low 75°	Low 75°	Low 75°	Low 75°
High 96°	High 97°	High 98°	High 96°	High 97°

Mostly Cloudy 47% Rain	Partly Cloudy 25% Rain	Partly Cloudy 24% Rain	Partly Cloudy 22% Rain	Partly Cloudy 24% Rain

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