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Tropical Storm Erick to rapidly strengthen, may become major hurricane Chevron right
Heat wave to push temps near 100 F across central, eastern US Chevron right

Defiance, MO

86°F
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Defiance

Missouri

86°
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Defiance, MO Weather
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Winter Center
Today Hourly

Daily

 Radar MinuteCast Monthly Air Quality Health & Activities
Air Quality Alert

June 17 - July 31

Tue 6/17

87° /72°
25%
Humid with low clouds and fog, then some sun
alerts

Air Quality Alert

3:23 PM Monday - 8:00 PM Tuesday

RealFeel®99°

RealFeel Shade™91°

Max UV Index11 (Extreme)

WindSSW 5 mph

Wed 6/18

82° /65°
99%
Mostly cloudy, breezy and humid with a couple of heavy thunderstorms; storms can bring flooding downpours, hail, damaging wind gusts, and an isolated tornado

RealFeel®88°

RealFeel Shade™83°

Max UV Index5 (Moderate)

WindSW 15 mph

Thu 6/19

88° /65°
1%
Sunny to partly cloudy and humid

RealFeel®93°

RealFeel Shade™87°

Max UV Index11 (Extreme)

WindW 7 mph

Fri 6/20

94° /74°
1%
Hot with plenty of sun; caution advised if outside for extended periods of time

RealFeel®99°

RealFeel Shade™93°

Max UV Index11 (Extreme)

WindSSW 8 mph

Sat 6/21

97° /73°
1%
Very hot with sunshine; caution advised if outside for extended periods of time

RealFeel®103°

RealFeel Shade™97°

Max UV Index11 (Extreme)

WindSSW 12 mph

Sun 6/22

94° /72°
1%
Hot with plenty of sunshine

RealFeel®99°

RealFeel Shade™94°

Max UV Index11 (Extreme)

WindSSW 10 mph

Mon 6/23

93° /73°
1%
Sunny and hot

RealFeel®102°

RealFeel Shade™93°

Max UV Index11 (Extreme)

WindS 7 mph

Tue 6/24

93° /72°
3%
Mostly sunny and hot

RealFeel®99°

RealFeel Shade™93°

Max UV Index11 (Extreme)

WindS 7 mph

Wed 6/25

92° /73°
3%
Mostly sunny and hot

RealFeel®96°

RealFeel Shade™90°

Max UV Index11 (Extreme)

WindS 7 mph

Thu 6/26

93° /71°
40%
Partly sunny and hot; a thunderstorm around in the afternoon

RealFeel®98°

RealFeel Shade™94°

Max UV Index11 (Extreme)

WindS 8 mph

Fri 6/27

86° /70°
58%
Rather cloudy and humid with a couple of thunderstorms

RealFeel®93°

RealFeel Shade™90°

Max UV Index8 (Very High)

WindSW 6 mph

Sat 6/28

88° /71°
61%
Some sunshine giving way to clouds; a morning thunderstorm in parts of the area followed by a little rain in the afternoon

RealFeel®96°

RealFeel Shade™88°

Max UV Index11 (Extreme)

WindNNW 4 mph

Sun 6/29

88° /70°
2%
Low clouds

RealFeel®88°

RealFeel Shade™88°

Max UV Index3 (Moderate)

WindSSE 5 mph

Mon 6/30

87° /66°
20%
Sunny

RealFeel®93°

RealFeel Shade™85°

Max UV Index11 (Extreme)

WindSSW 6 mph

Tue 7/1

90° /71°
10%
Humid with brilliant sunshine

RealFeel®99°

RealFeel Shade™95°

Max UV Index11 (Extreme)

WindSSW 7 mph

Wed 7/2

90° /72°
5%
Hot and humid with plenty of sunshine

RealFeel®100°

RealFeel Shade™95°

Max UV Index11 (Extreme)

WindSSW 6 mph

Thu 7/3

91° /72°
10%
Sunny, hot and humid

RealFeel®101°

RealFeel Shade™97°

Max UV Index11 (Extreme)

WindSSW 6 mph

Fri 7/4

90° /71°
5%
Mostly sunny and humid

RealFeel®98°

RealFeel Shade™92°

Max UV Index11 (Extreme)

WindSSW 6 mph

Sat 7/5

91° /72°
5%
Hot with plenty of sun

RealFeel®99°

RealFeel Shade™92°

Max UV Index11 (Extreme)

WindSW 5 mph

Sun 7/6

92° /72°
5%
Hot with plenty of sun

RealFeel®99°

RealFeel Shade™91°

Max UV Index11 (Extreme)

WindSSW 5 mph

Mon 7/7

92° /71°
5%
Brilliant sunshine and hot

RealFeel®100°

RealFeel Shade™93°

Max UV Index11 (Extreme)

WindSW 4 mph

Tue 7/8

91° /73°
5%
Sunny and hot

RealFeel®100°

RealFeel Shade™93°

Max UV Index11 (Extreme)

WindSW 5 mph

Wed 7/9

92° /72°
20%
Mostly sunny and hot

RealFeel®101°

RealFeel Shade™95°

Max UV Index11 (Extreme)

WindESE 5 mph

Thu 7/10

91° /72°
10%
Mostly sunny, hot and very humid

RealFeel®102°

RealFeel Shade™98°

Max UV Index11 (Extreme)

WindSE 4 mph

Fri 7/11

90° /71°
10%
Mostly sunny and humid

RealFeel®98°

RealFeel Shade™95°

Max UV Index11 (Extreme)

WindS 9 mph

Sat 7/12

91° /72°
25%
Clouds to start, then sunshine returns and humid

RealFeel®96°

RealFeel Shade™92°

Max UV Index11 (Extreme)

WindSSW 10 mph

Sun 7/13

92° /73°
25%
Hot with times of sun and clouds

RealFeel®98°

RealFeel Shade™93°

Max UV Index6 (High)

WindWSW 7 mph

Mon 7/14

92° /73°
10%
Sunny and hot

RealFeel®97°

RealFeel Shade™91°

Max UV Index11 (Extreme)

WindSW 7 mph

Tue 7/15

91° /72°
20%
Mostly sunny and hot

RealFeel®95°

RealFeel Shade™89°

Max UV Index11 (Extreme)

WindSW 7 mph

Wed 7/16

93° /73°
25%
Hot with considerable cloudiness

RealFeel®98°

RealFeel Shade™97°

Max UV Index4 (Moderate)

WindNNE 5 mph

Thu 7/17

90° /71°
62%
Cloudy most of the time with a couple of showers and a thunderstorm; humid

RealFeel®99°

RealFeel Shade™96°

Max UV Index2 (Low)

WindNE 2 mph

Fri 7/18

90° /71°
20%
Mostly sunny

RealFeel®97°

RealFeel Shade™90°

Max UV Index11 (Extreme)

WindESE 4 mph

Sat 7/19

86° /70°
70%
Cloudy with showers and thunderstorms in the afternoon

RealFeel®90°

RealFeel Shade™90°

Max UV Index3 (Moderate)

WindS 9 mph

Sun 7/20

84° /66°
10%
Sunny

RealFeel®90°

RealFeel Shade™81°

Max UV Index11 (Extreme)

WindN 6 mph

Mon 7/21

83° /65°
10%
Mostly sunny

RealFeel®90°

RealFeel Shade™82°

Max UV Index11 (Extreme)

WindW 4 mph

Tue 7/22

85° /64°
20%
Sunshine and less humid

RealFeel®88°

RealFeel Shade™82°

Max UV Index10 (Very High)

WindNW 9 mph

Wed 7/23

82° /63°
20%
Mostly sunny

RealFeel®86°

RealFeel Shade™79°

Max UV Index10 (Very High)

WindNW 8 mph

Thu 7/24

82° /63°
20%
Mostly sunny

RealFeel®89°

RealFeel Shade™81°

Max UV Index10 (Very High)

WindNW 4 mph

Fri 7/25

83° /64°
20%
More sunshine than clouds

RealFeel®88°

RealFeel Shade™80°

Max UV Index10 (Very High)

WindESE 6 mph

Sat 7/26

84° /65°
25%
Sun and some clouds

RealFeel®87°

RealFeel Shade™82°

Max UV Index10 (Very High)

WindSE 7 mph

Sun 7/27

84° /67°
62%
Intervals of clouds and sunshine with a couple of showers and a thunderstorm in the afternoon

RealFeel®90°

RealFeel Shade™85°

Max UV Index10 (Very High)

WindS 4 mph

Mon 7/28

83° /64°
1%
Sunny to partly cloudy and less humid

RealFeel®87°

RealFeel Shade™81°

Max UV Index10 (Very High)

WindENE 7 mph

Tue 7/29

83° /62°
25%
Partly sunny

RealFeel®86°

RealFeel Shade™80°

Max UV Index10 (Very High)

WindENE 8 mph

Wed 7/30

85° /62°
0%
Partly sunny

RealFeel®88°

RealFeel Shade™83°

Max UV Index10 (Very High)

WindNNE 7 mph

Thu 7/31

84° /63°
3%
Sunshine and a few clouds

RealFeel®92°

RealFeel Shade™88°

Max UV Index10 (Very High)

WindNE 4 mph

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World North America United States Missouri Defiance

Weather Near Defiance:

  • O'Fallon, MO
  • St. Charles, MO
  • St. Louis, MO
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