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Current weather in Florissant is overcast clouds.

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Weather data for Florissant is updated regularly with the latest available observations and forecasts.

Now · 1:43 AM

Florissant Weather & Hourly Forecast

United States · Missouri · 63031

73°F

Overcast night

Feels like: 71°F

💧 Humidity 57% 🌡 Pressure 30.03 inHg 💨 Wind 7 mph 👁 Visibility 21.6 mi ☁ Clouds 95% ☀️ UV index 0.0 · Low 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Florissant

Today

2:00 AM

Overcast night

73° 💧 None 💨 7 mph H 57%30.03 inHg

5:00 AM

Mostly cloudy night

69° 💧 None 💨 6 mph H 67%30.03 inHg

8:00 AM

Sunny

70° 💧 None 💨 6 mph H 72%30.09 inHg

11:00 AM

Sunny

79° 💧 None 💨 7 mph H 53%30.09 inHg

2:00 PM

Sunny

85° 💧 None 💨 5 mph H 39%30.06 inHg

5:00 PM

Sunny

85° 💧 None 💨 7 mph H 37%30.00 inHg

8:00 PM

Clear night

78° 💧 None 💨 7 mph H 48%30.03 inHg

11:00 PM

Clear night

74° 💧 None 💨 6 mph H 52%30.06 inHg

Tomorrow

2:00 AM

Mostly clear night

71° 💧 None 💨 5 mph H 65%30.06 inHg

5:00 AM

Overcast night

68° 💧 None 💨 4 mph H 72%30.09 inHg

8:00 AM

Mostly cloudy

70° 💧 None 💨 4 mph H 70%30.09 inHg

11:00 AM

Mostly cloudy

84° 💧 None 💨 4 mph H 44%30.09 inHg

2:00 PM

Partly cloudy

92° 💧 None 💨 3 mph H 33%30.03 inHg

5:00 PM

Sunny

93° 💧 None 💨 5 mph H 31%30.00 inHg

8:00 PM

Clear night

86° 💧 None 💨 5 mph H 37%30.00 inHg

11:00 PM

Mostly clear night

82° 💧 None 💨 7 mph H 46%30.03 inHg

Today

2:00 AM

Overcast night

73° 💧 None 💨 7 mph H 57%30.03 inHg

3:00 AM

Overcast night

71° 💧 None 💨 7 mph H 59%30.03 inHg

4:00 AM

Mostly cloudy night

71° 💧 None 💨 7 mph H 61%30.03 inHg

5:00 AM

Mostly cloudy night

69° 💧 None 💨 6 mph H 67%30.03 inHg

6:00 AM

Mostly cloudy night

68° 💧 None 💨 5 mph H 72%30.06 inHg

7:00 AM

Mostly sunny

68° 💧 None 💨 5 mph H 75%30.09 inHg

8:00 AM

Sunny

70° 💧 None 💨 6 mph H 72%30.09 inHg

9:00 AM

Sunny

72° 💧 None 💨 6 mph H 67%30.09 inHg

10:00 AM

Sunny

76° 💧 None 💨 7 mph H 60%30.09 inHg

11:00 AM

Sunny

79° 💧 None 💨 7 mph H 53%30.09 inHg

12:00 PM

Sunny

81° 💧 None 💨 6 mph H 48%30.09 inHg

1:00 PM

Sunny

83° 💧 None 💨 5 mph H 43%30.06 inHg

2:00 PM

Sunny

85° 💧 None 💨 5 mph H 39%30.06 inHg

3:00 PM

Sunny

85° 💧 None 💨 6 mph H 36%30.03 inHg

4:00 PM

Sunny

86° 💧 None 💨 6 mph H 36%30.03 inHg

5:00 PM

Sunny

85° 💧 None 💨 7 mph H 37%30.00 inHg

6:00 PM

Mostly sunny

83° 💧 None 💨 7 mph H 40%30.00 inHg

7:00 PM

Sunny

81° 💧 None 💨 7 mph H 45%30.03 inHg

8:00 PM

Clear night

78° 💧 None 💨 7 mph H 48%30.03 inHg

9:00 PM

Clear night

77° 💧 None 💨 7 mph H 49%30.06 inHg

10:00 PM

Clear night

75° 💧 None 💨 7 mph H 50%30.06 inHg

11:00 PM

Clear night

74° 💧 None 💨 6 mph H 52%30.06 inHg

Tomorrow

12:00 AM

Clear night

73° 💧 None 💨 6 mph H 56%30.06 inHg

1:00 AM

Clear night

72° 💧 None 💨 5 mph H 61%30.06 inHg

2:00 AM

Mostly clear night

71° 💧 None 💨 5 mph H 65%30.06 inHg

3:00 AM

Mostly cloudy night

70° 💧 None 💨 5 mph H 67%30.06 inHg

4:00 AM

Mostly cloudy night

69° 💧 None 💨 5 mph H 69%30.06 inHg

5:00 AM

Overcast night

68° 💧 None 💨 4 mph H 72%30.09 inHg

6:00 AM

Overcast night

68° 💧 None 💨 4 mph H 74%30.09 inHg

7:00 AM

Overcast

68° 💧 None 💨 3 mph H 76%30.09 inHg

8:00 AM

Mostly cloudy

70° 💧 None 💨 4 mph H 70%30.09 inHg

9:00 AM

Partly cloudy

74° 💧 None 💨 4 mph H 62%30.09 inHg

10:00 AM

Mostly sunny

79° 💧 None 💨 4 mph H 52%30.09 inHg

11:00 AM

Mostly cloudy

84° 💧 None 💨 4 mph H 44%30.09 inHg

12:00 PM

Partly cloudy

87° 💧 None 💨 4 mph H 39%30.09 inHg

1:00 PM

Partly cloudy

90° 💧 None 💨 3 mph H 35%30.06 inHg

2:00 PM

Partly cloudy

92° 💧 None 💨 3 mph H 33%30.03 inHg

3:00 PM

Mostly sunny

93° 💧 None 💨 3 mph H 32%30.03 inHg

4:00 PM

Sunny

93° 💧 None 💨 4 mph H 32%30.00 inHg

5:00 PM

Sunny

93° 💧 None 💨 5 mph H 31%30.00 inHg

6:00 PM

Mostly sunny

92° 💧 None 💨 5 mph H 33%30.00 inHg

7:00 PM

Sunny

89° 💧 None 💨 5 mph H 36%30.00 inHg

8:00 PM

Clear night

86° 💧 None 💨 5 mph H 37%30.00 inHg

9:00 PM

Clear night

84° 💧 None 💨 5 mph H 38%30.03 inHg

10:00 PM

Clear night

83° 💧 None 💨 6 mph H 42%30.03 inHg

11:00 PM

Mostly clear night

82° 💧 None 💨 7 mph H 46%30.03 inHg

Wednesday

12:00 AM

Mostly clear night

82° 💧 None 💨 8 mph H 54%30.03 inHg

1:00 AM

Clear night

80° 💧 None 💨 8 mph H 58%30.03 inHg

2:00 AM

Clear night

80° 💧 None 💨 8 mph H 59%30.03 inHg

3:00 AM

Clear night

79° 💧 None 💨 8 mph H 62%30.00 inHg

4:00 AM

Clear night

78° 💧 None 💨 7 mph H 63%30.03 inHg

5:00 AM

Clear night

77° 💧 None 💨 7 mph H 64%30.03 inHg

6:00 AM

Clear night

77° 💧 None 💨 7 mph H 64%30.03 inHg

7:00 AM

Sunny

77° 💧 None 💨 7 mph H 63%30.03 inHg

8:00 AM

Sunny

80° 💧 None 💨 7 mph H 58%30.06 inHg

9:00 AM

Sunny

84° 💧 None 💨 6 mph H 52%30.03 inHg

10:00 AM

Sunny

89° 💧 None 💨 7 mph H 44%30.03 inHg

11:00 AM

Sunny

93° 💧 None 💨 7 mph H 39%30.03 inHg

12:00 PM

Mostly sunny

96° 💧 None 💨 8 mph H 38%30.03 inHg

1:00 PM

Light rain

95° 💧 0.008 in 💨 7 mph H 41%30.00 inHg

2:00 PM

Light rain

96° 💧 0.004 in 💨 8 mph H 40%29.97 inHg

3:00 PM

Light rain

91° 💧 0.029 in 💨 6 mph H 50%29.97 inHg

4:00 PM

Partly cloudy

95° 💧 0.001 in 💨 6 mph H 40%29.94 inHg

5:00 PM

Light thunderstorms

88° 💧 0.030 in 💨 4 mph H 60%29.94 inHg

6:00 PM

Light rain

87° 💧 0.011 in 💨 4 mph H 64%29.94 inHg

7:00 PM

Mostly sunny

85° 💧 0.001 in 💨 2 mph H 71%29.94 inHg

10:00 PM

Mostly clear night

83° 💧 None 💨 4 mph H 67%29.97 inHg

Thursday

1:00 AM

Light rain

78° 💧 None 💨 4 mph H 82%29.97 inHg

4:00 AM

Moderate rain

73° 💧 None 💨 3 mph H 99%30.00 inHg

7:00 AM

Overcast

73° 💧 None 💨 4 mph H 97%30.00 inHg

10:00 AM

Mostly cloudy

77° 💧 None 💨 7 mph H 82%30.03 inHg

1:00 PM

Overcast

82° 💧 None 💨 5 mph H 61%30.00 inHg

4:00 PM

Partly cloudy

83° 💧 None 💨 7 mph H 53%29.94 inHg

7:00 PM

Mostly sunny

77° 💧 None 💨 4 mph H 62%29.94 inHg

10:00 PM

Mostly clear night

71° 💧 None 💨 3 mph H 76%29.97 inHg

Friday

1:00 AM

Partly cloudy night

68° 💧 None 💨 3 mph H 82%29.97 inHg

4:00 AM

Clear night

66° 💧 None 💨 3 mph H 85%29.97 inHg

7:00 AM

Sunny

65° 💧 None 💨 3 mph H 89%29.94 inHg

10:00 AM

Sunny

75° 💧 None 💨 4 mph H 67%29.94 inHg

1:00 PM

Sunny

84° 💧 None 💨 5 mph H 51%29.88 inHg

4:00 PM

Mostly sunny

87° 💧 None 💨 5 mph H 45%29.80 inHg

7:00 PM

Sunny

82° 💧 None 💨 5 mph H 58%29.77 inHg

10:00 PM

Clear night

78° 💧 None 💨 6 mph H 71%29.80 inHg

Saturday

1:00 AM

Mostly clear night

76° 💧 None 💨 7 mph H 83%29.80 inHg

4:00 AM

Overcast night

75° 💧 None 💨 8 mph H 87%29.77 inHg

7:00 AM

Partly cloudy

75° 💧 None 💨 8 mph H 86%29.83 inHg

10:00 AM

Overcast

80° 💧 None 💨 6 mph H 74%29.85 inHg

1:00 PM

Sunny

89° 💧 None 💨 3 mph H 57%29.85 inHg

7:00 PM

Sunny

87° 💧 None 💨 3 mph H 59%29.88 inHg

Sunday

1:00 AM

Clear night

84° 💧 None 💨 3 mph H 69%29.88 inHg

7:00 AM

Sunny

77° 💧 None 💨 4 mph H 84%29.97 inHg

1:00 PM

Mostly sunny

74° 💧 None 💨 4 mph H 91%30.00 inHg

7:00 PM

Mostly cloudy

93° 💧 None 💨 6 mph H 46%29.97 inHg

Monday

1:00 AM

Clear night

89° 💧 None 💨 4 mph H 57%29.91 inHg

7:00 AM

Partly cloudy

83° 💧 None 💨 7 mph H 64%30.00 inHg

1:00 PM

Sunny

79° 💧 None 💨 6 mph H 68%30.00 inHg

7:00 PM

Mostly sunny

97° 💧 None 💨 8 mph H 38%29.94 inHg

Tuesday

1:00 AM

Clear night

94° 💧 None 💨 10 mph H 36%29.85 inHg

7:00 AM

Sunny

84° 💧 None 💨 8 mph H 49%29.94 inHg

1:00 PM

Sunny

81° 💧 None 💨 7 mph H 54%29.97 inHg

7:00 PM

Mostly cloudy

91° 💧 None 💨 7 mph H 49%30.03 inHg

Wednesday

1:00 AM

Mostly cloudy night

83° 💧 None 💨 10 mph H 48%30.09 inHg

7:00 AM

Mostly sunny

74° 💧 None 💨 6 mph H 52%30.18 inHg

1:00 PM

Mostly sunny

68° 💧 None 💨 6 mph H 70%30.27 inHg

7:00 PM

Mostly sunny

86° 💧 None 💨 4 mph H 37%30.27 inHg

Thursday

1:00 AM

Overcast night

83° 💧 None 💨 7 mph H 38%30.21 inHg

7:00 AM

Partly cloudy

75° 💧 None 💨 6 mph H 48%30.27 inHg

1:00 PM

Sunny

70° 💧 None 💨 5 mph H 68%30.30 inHg

7:00 PM

Partly cloudy

85° 💧 None 💨 4 mph H 38%30.27 inHg

Friday

1:00 AM

Overcast night

83° 💧 None 💨 7 mph H 35%30.21 inHg

7:00 AM

Sunny

72° 💧 None 💨 5 mph H 56%30.24 inHg

1:00 PM

Sunny

65° 💧 None 💨 6 mph H 72%30.27 inHg

7:00 PM

Sunny

78° 💧 None 💨 11 mph H 42%30.27 inHg

Saturday

1:00 AM

Clear night

74° 💧 None 💨 16 mph H 45%30.21 inHg

7:00 AM

Sunny

61° 💧 None 💨 13 mph H 56%30.36 inHg

1:00 PM

Sunny

57° 💧 None 💨 9 mph H 62%30.39 inHg

7:00 PM

Partly cloudy

67° 💧 None 💨 11 mph H 33%30.36 inHg

Sunday

1:00 AM

Clear night

65° 💧 None 💨 9 mph H 39%30.27 inHg

7:00 AM

Sunny

58° 💧 None 💨 8 mph H 52%30.30 inHg

1:00 PM

Sunny

52° 💧 None 💨 5 mph H 66%30.33 inHg

7:00 PM

Sunny

67° 💧 None 💨 8 mph H 30%30.27 inHg

Monday

1:00 AM

Clear night

66° 💧 None 💨 5 mph H 32%30.21 inHg

7:00 AM

Sunny

58° 💧 None 💨 4 mph H 50%30.24 inHg

1:00 PM

Sunny

52° 💧 None 💨 3 mph H 66%30.27 inHg

In Florissant and, more broadly, across the state of Missouri: Tonight, the sky will remain mostly sunny with just a few clouds drifting by. Temperatures will stay hot, ranging from around 89 to 92 degrees Fahrenheit. Winds will be moderate out of the east at up to 12 mph, with gusts reaching 28 mph. No rain is expected during the evening hours, so conditions will be dry. Humidity levels are likely to stay relatively steady, maintaining the warm and somewhat breezy environment. As the night progresses, temperatures will gradually ease, but it will still feel warm and humid. Expect the wind to continue being a bit gusty at times, providing some relief from the heat. Overall, it’s a warm, dry evening with comfortable breezes.

15-Day Weather Outlook for Florissant

TomorrowTomorrow

Mostly sunny 93°/67° 💧 None 💨 7 mph

Wednesday, Sep 9Wed Sep 9

Mostly sunny 100°/76° 💧 0.001 in 💨 8 mph

Thursday, Sep 10Thu Sep 10

Moderate rain 88°/73° 💧 0.328 in 💨 7 mph

Friday, Sep 11Fri Sep 11

Mostly sunny 87°/65° 💧 None 💨 5 mph

Saturday, Sep 12Sat Sep 12

Partly cloudy 89°/75° 💧 0.008 in 💨 8 mph

Sunday, Sep 13Sun Sep 13

Mostly sunny 87°/74° 💧 0.262 in 💨 4 mph

Monday, Sep 14Mon Sep 14

Mostly cloudy 93°/79° 💧 0.006 in 💨 7 mph

Tuesday, Sep 15Tue Sep 15

Mostly sunny 97°/81° 💧 0.001 in 💨 10 mph

Wednesday, Sep 16Wed Sep 16

Mostly cloudy 91°/68° 💧 0.023 in 💨 10 mph

Thursday, Sep 17Thu Sep 17

Mostly sunny 86°/70° 💧 None 💨 7 mph

Friday, Sep 18Fri Sep 18

Partly cloudy 85°/65° 💧 None 💨 7 mph

Saturday, Sep 19Sat Sep 19

Sunny 78°/57° 💧 None 💨 16 mph

Sunday, Sep 20Sun Sep 20

Partly cloudy 67°/52° 💧 None 💨 11 mph

Monday, Sep 21Mon Sep 21

Sunny 67°/52° 💧 None 💨 8 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Florissant

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Florissant

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 2:00 AM

PM2.5 Fine particles Good 4,9µg/m³

Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.

PM10 Particulate matter Good 5,5µg/m³

Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.

O₃ Ozone Fair 69,3µg/m³

Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.

NO₂ Nitrogen dioxide Good 1,9µg/m³

A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.

Air quality is acceptable for most people.

UV & HEALTH

UV, Sun & Health Outlook in Florissant

Maximum daily UV Today, tomorrow and the following day show the maximum UV index forecast for each day.

0–2 Low 3–5 Moderate 6–7 High 8–10 Very high 11+ Extreme

Today UV 8,2Very high 🙂Fair

Tomorrow UV 7,5High 😐Moderate

Wednesday UV 7,8High 🙂Fair

Thursday UV 6,1High 😊Good

Friday UV 7,0High 😊Good

Saturday UV 8,0Very high —Unavailable

Sunday UV 9,0Very high —Unavailable

Hourly UV index today

7:00 AMUV 0,0 8:00 AMUV 0,5 9:00 AMUV 1,7 10:00 AMUV 3,6 11:00 AMUV 5,8 12:00 PMUV 7,5 1:00 PMUV 8,2 2:00 PMUV 7,6 3:00 PMUV 5,9 4:00 PMUV 3,7 5:00 PMUV 1,8 6:00 PMUV 0,6

Today's weather health advice Open today's recommendations.

Very high UV risk

Use SPF 50+ sunscreen, a hat and sunglasses. Seek shade and limit exposure around midday.

Acceptable air quality

Air quality is acceptable for most people. Very sensitive people may want to reduce prolonged exertion.

Comfortable temperature conditions

Temperatures should feel comfortable for most people, with no particular heat or cold precautions needed.

Best in the morning or late in the day

For walking, running or cycling, prefer the early morning or late afternoon.

WIND OUTLOOK

Hourly Wind Forecast for Florissant

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · FLORISSANT, MISSOURI

Tonight's Stargazing & Shooting Stars

Local night-sky conditions and meteor activity for Jasper.

36/100Best-hour score

No good viewing window tonight Astronomical darkness exists, but current sky conditions are unfavorable.

☁ Cloud cover 87% Real hourly forecast for the best viewing hour.

☾ Moonlight 21% Waning Crescent · Moon about 16° above the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 77° high at the best hour.

✦ Estimated visible meteors Poor visibility Meteor activity may occur above the clouds, but local viewing conditions are not suitable.

Chance ≥1 meteor in 30 minNot meaningful

UPCOMING METEOR PERIODSStart, peak and end dates · weather should be checked closer to the peak.

SEP 5–SEP 21

September ε-PerseidsStart SEP 5 · Peak SEP 9 · End SEP 21 · ZHR 8 · 6% Moon at peak

ACTIVE NOW

SEP 20–NOV 20

Southern TauridsStart SEP 20 · Peak NOV 5 · End NOV 20 · ZHR 7 · 20% Moon at peak

UPCOMING

OCT 2–NOV 7

OrionidsStart OCT 2 · Peak OCT 21 · End NOV 7 · ZHR 20 · 77% Moon at peak

UPCOMING

OCT 20–DEC 10

Northern TauridsStart OCT 20 · Peak NOV 12 · End DEC 10 · ZHR 5 · 7% Moon at peak

UPCOMING

Experimental local observing estimate. Weather values come from the hourly forecast already used on this page. Moon position and astronomical darkness are calculated locally from time and coordinates. Meteor-shower ZHR describes ideal conditions and is not the number of meteors a person should expect to see locally.

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Forecast data for Florissant were last refreshed today at 1:43 AM. The current forecast period extends through 08/09/2026 at 11:00 PM. Weather, air-quality and UV-index data are provided through WEATHER-INFO.COM. Forecasts are produced automatically from the latest available data and are subject to periodic technical checks. This service is intended for general weather information.