August 18 - October 1

Mon 8/18

Humid with heavy t-storms; clouds this morning, then sunny intervals this afternoon; thunderstorms can bring flash flooding and localized damaging wind gusts

RealFeel®95°

RealFeel Shade™91°

Max UV Index7.0 (High)

WindSSE 7 mph

Tue 8/19

82° /63°

Partly sunny and humid

RealFeel®95°

RealFeel Shade™87°

Max UV Index8.0 (Very High)

WindN 8 mph

Wed 8/20

78° /57°

Mostly sunny, pleasant and less humid

RealFeel®86°

RealFeel Shade™78°

Max UV Index7.0 (High)

WindNE 8 mph

Thu 8/21

79° /59°

Humid with plenty of sun

RealFeel®88°

RealFeel Shade™80°

Max UV Index7.0 (High)

WindE 4 mph

Fri 8/22

81° /56°

Humid with partial sunshine

RealFeel®90°

RealFeel Shade™83°

Max UV Index7.0 (High)

WindSW 6 mph

Sat 8/23

77° /50°

Sunshine and a few clouds, pleasant and less humid

RealFeel®78°

RealFeel Shade™76°

Max UV Index7.0 (High)

WindNW 6 mph

Sun 8/24

66° /46°

Low humidity with times of clouds and sun

RealFeel®66°

RealFeel Shade™63°

Max UV Index4.0 (Moderate)

WindNW 12 mph

Mon 8/25

72° /55°

49%

A morning shower in spots; otherwise, partly sunny

RealFeel®74°

RealFeel Shade™70°

Max UV Index5.0 (Moderate)

WindNNW 7 mph

Tue 8/26

73° /58°

Sunny to partly cloudy

RealFeel®81°

RealFeel Shade™71°

Max UV Index7.0 (High)

WindNE 2 mph

Wed 8/27

76° /59°

Sun through high clouds

RealFeel®75°

RealFeel Shade™73°

Max UV Index3.0 (Moderate)

WindSSE 9 mph

Thu 8/28

77° /57°

Humid with clouds followed by a brightening sky

RealFeel®82°

RealFeel Shade™80°

Max UV Index3.0 (Moderate)

WindSE 7 mph

Fri 8/29

77° /59°

75%

Rain

RealFeel®75°

RealFeel Shade™75°

Max UV Index1.0 (Low)

WindESE 14 mph

Sat 8/30

76° /57°

60%

Periods of rain

RealFeel®74°

RealFeel Shade™74°

Max UV Index2.0 (Low)

WindESE 13 mph

Sun 8/31

79° /56°

25%

Intervals of clouds and sunshine

RealFeel®82°

RealFeel Shade™81°

Max UV Index3.0 (Moderate)

WindNW 1 mph

Mon 9/1

83° /63°

25%

Cloudy and humid

RealFeel®85°

RealFeel Shade™85°

Max UV Index2.0 (Low)

WindNNE 6 mph

Tue 9/2

82° /62°

20%

Mostly sunny

RealFeel®83°

RealFeel Shade™80°

Max UV Index6.0 (High)

WindESE 9 mph

Wed 9/3

79° /61°

70%

Cloudy most of the time with showers and thunderstorms becoming more widespread; humid

RealFeel®82°

RealFeel Shade™81°

Max UV Index2.0 (Low)

WindSSW 7 mph

Thu 9/4

79° /60°

25%

Turning cloudy and less humid

RealFeel®79°

RealFeel Shade™79°

Max UV Index4.0 (Moderate)

WindNE 4 mph

Fri 9/5

78° /59°

20%

Partly sunny

RealFeel®80°

RealFeel Shade™77°

Max UV Index3.0 (Moderate)

WindESE 2 mph

Sat 9/6

81° /60°

20%

Plenty of sunshine

RealFeel®81°

RealFeel Shade™78°

Max UV Index6.0 (High)

WindSE 8 mph

Sun 9/7

79° /61°

70%

Cloudy and humid; showers and thunderstorms in the afternoon

RealFeel®82°

RealFeel Shade™82°

Max UV Index1.0 (Low)

WindWSW 6 mph

Mon 9/8

78° /59°

Less humid with plenty of sunshine

RealFeel®79°

RealFeel Shade™75°

Max UV Index6.0 (High)

WindN 8 mph

Tue 9/9

76° /59°

20%

Sunshine and a few clouds

RealFeel®77°

RealFeel Shade™74°

Max UV Index6.0 (High)

WindSSW 8 mph

Wed 9/10

78° /58°

10%

Sunny

RealFeel®80°

RealFeel Shade™75°

Max UV Index5.0 (Moderate)

WindN 6 mph

Thu 9/11

75° /57°

25%

Mostly cloudy

RealFeel®78°

RealFeel Shade™74°

Max UV Index5.0 (Moderate)

WindE 6 mph

Fri 9/12

80° /57°

39%

Mainly cloudy and humid with a thunderstorm in parts of the area

RealFeel®85°

RealFeel Shade™84°

Max UV Index3.0 (Moderate)

WindENE 6 mph

Sat 9/13

81° /58°

25%

Intervals of clouds and sunshine

RealFeel®86°

RealFeel Shade™84°

Max UV Index3.0 (Moderate)

WindSSW 10 mph

Sun 9/14

81° /56°

40%

A thunderstorm in spots in the morning; otherwise, mostly cloudy and humid

RealFeel®85°

RealFeel Shade™84°

Max UV Index2.0 (Low)

WindSE 8 mph

Mon 9/15

68° /47°

Partly sunny

RealFeel®68°

RealFeel Shade™65°

Max UV Index5.0 (Moderate)

WindNW 9 mph

Tue 9/16

68° /46°

Sunny

RealFeel®68°

RealFeel Shade™65°

Max UV Index5.0 (Moderate)

WindSSE 8 mph

Wed 9/17

66° /47°

63%

Rain

RealFeel®64°

RealFeel Shade™64°

Max UV Index1.0 (Low)

WindSSE 10 mph

Thu 9/18

67° /49°

58%

Cloudy with a little rain

RealFeel®65°

RealFeel Shade™65°

Max UV Index1.0 (Low)

WindE 7 mph

Fri 9/19

68° /54°

Less humid with sunshine and a few clouds

RealFeel®69°

RealFeel Shade™67°

Max UV Index5.0 (Moderate)

WindWNW 9 mph

Sat 9/20

69° /47°

55%

Variable clouds with a couple of showers, mainly later

RealFeel®69°

RealFeel Shade™66°

Max UV Index4.0 (Moderate)

WindS 7 mph

Sun 9/21

77° /57°

Intervals of clouds and sunshine

RealFeel®77°

RealFeel Shade™75°

Max UV Index3.0 (Moderate)

WindW 8 mph

Mon 9/22

74° /54°

22%

Intervals of clouds and sunshine

RealFeel®73°

RealFeel Shade™71°

Max UV Index3.0 (Moderate)

WindN 13 mph

Tue 9/23

68° /42°

40%

Rather cloudy with a shower in places in the afternoon

RealFeel®65°

RealFeel Shade™65°

Max UV Index1.0 (Low)

WindESE 13 mph

Wed 9/24

72° /43°

70%

Cloudy; thunderstorms in the morning followed by a couple of showers in the afternoon

RealFeel®70°

RealFeel Shade™70°

Max UV Index1.0 (Low)

WindSW 13 mph

Thu 9/25

66° /41°

25%

Partly sunny

RealFeel®69°

RealFeel Shade™64°

Max UV Index4.0 (Moderate)

WindNNE 6 mph

Fri 9/26

72° /50°

Mostly sunny

RealFeel®71°

RealFeel Shade™69°

Max UV Index4.0 (Moderate)

WindS 10 mph

Sat 9/27

77° /51°

55%

A passing shower in the morning; otherwise, times of clouds and sun

RealFeel®79°

RealFeel Shade™76°

Max UV Index4.0 (Moderate)

WindWSW 7 mph

Sun 9/28

67° /54°

Sunshine and a few clouds

RealFeel®73°

RealFeel Shade™66°

Max UV Index4.0 (Moderate)

WindNNE 6 mph

Mon 9/29

66° /42°

Sunshine

RealFeel®70°

RealFeel Shade™67°

Max UV Index4.0 (Moderate)

WindENE 4 mph

Tue 9/30

68° /46°

Mostly sunny

RealFeel®70°

RealFeel Shade™67°

Max UV Index4.0 (Moderate)

WindSE 4 mph

Wed 10/1

70° /49°

Mostly sunny

RealFeel®73°

RealFeel Shade™68°

Max UV Index4.0 (Moderate)

WindSSE 5 mph

Sumner, IA

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