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Sweltering 90-100 F heat to expand, affect 170 million in central and eastern US. Details here Chevron right
Severe storms sweep Northeast, teen struck by lightning in Central Park. Read more Chevron right

Alta, IA

86°F
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Winter Center
Today Hourly

Daily

 Radar MinuteCast Monthly Air Quality Health & Activities
Extreme Heat Warning

June 21 - August 4

Sat 6/21

98° /73°
25%
Very windy; mostly sunny and hot; caution advised if doing strenuous activities outside
alerts

Extreme Heat Warning

12:00 PM Friday - 9:00 PM Sunday

RealFeel®99°

RealFeel Shade™96°

Max UV Index10 (Very High)

WindSSW 24 mph

Sun 6/22

95° /73°
4%
Very windy; blazing sunshine and hot; caution advised if doing strenuous activities outside
alerts

Extreme Heat Warning

12:00 PM Friday - 9:00 PM Sunday

RealFeel®98°

RealFeel Shade™95°

Max UV Index10 (Very High)

WindS 23 mph

Mon 6/23

77° /63°
70%
Some sun, then clouds; cooler; breezy in the morning, then heavy thunderstorms, humid; thunderstorms could bring damaging winds, flash flooding and hail

RealFeel®83°

RealFeel Shade™78°

Max UV Index10 (Very High)

WindNW 13 mph

Tue 6/24

75° /66°
88%
Cloudy and humid with a couple of showers and a thunderstorm

RealFeel®80°

RealFeel Shade™80°

Max UV Index3 (Moderate)

WindE 8 mph

Wed 6/25

79° /67°
96%
Humid with a couple of showers and a thunderstorm; cloudy in the morning, then times of clouds and sun in the afternoon

RealFeel®85°

RealFeel Shade™82°

Max UV Index5 (Moderate)

WindSSE 9 mph

Thu 6/26

78° /63°
88%
Intervals of clouds and sunshine with a couple of thunderstorms; humid

RealFeel®86°

RealFeel Shade™80°

Max UV Index10 (Very High)

WindWSW 9 mph

Fri 6/27

82° /66°
2%
Humid with sunshine and some clouds

RealFeel®89°

RealFeel Shade™83°

Max UV Index10 (Very High)

WindS 8 mph

Sat 6/28

82° /64°
39%
Humid with times of clouds and sun; watch for a strong thunderstorm in the morning followed by a thunderstorm in parts of the area in the afternoon

RealFeel®88°

RealFeel Shade™84°

Max UV Index4 (Moderate)

WindSSW 12 mph

Sun 6/29

79° /60°
39%
Mostly cloudy and humid with a strong thunderstorm in spots

RealFeel®81°

RealFeel Shade™78°

Max UV Index4 (Moderate)

WindWNW 8 mph

Mon 6/30

79° /62°
1%
Sunny to partly cloudy

RealFeel®85°

RealFeel Shade™77°

Max UV Index10 (Very High)

WindNW 6 mph

Tue 7/1

84° /65°
1%
Humid with plenty of sunshine

RealFeel®91°

RealFeel Shade™84°

Max UV Index10 (Very High)

WindSSE 5 mph

Wed 7/2

82° /65°
4%
Partly sunny and humid

RealFeel®89°

RealFeel Shade™83°

Max UV Index7 (High)

WindS 9 mph

Thu 7/3

84° /67°
1%
Partly sunny and humid

RealFeel®95°

RealFeel Shade™88°

Max UV Index10 (Very High)

WindS 7 mph

Fri 7/4

83° /69°
10%
Sunshine and humid

RealFeel®95°

RealFeel Shade™88°

Max UV Index10 (Very High)

WindS 4 mph

Sat 7/5

78° /60°
10%
Mostly sunny and less humid

RealFeel®83°

RealFeel Shade™75°

Max UV Index10 (Very High)

WindNE 8 mph

Sun 7/6

76° /59°
20%
Mostly sunny

RealFeel®82°

RealFeel Shade™74°

Max UV Index10 (Very High)

WindESE 5 mph

Mon 7/7

77° /60°
20%
Sun giving way to increasing clouds

RealFeel®81°

RealFeel Shade™74°

Max UV Index10 (Very High)

WindSSE 8 mph

Tue 7/8

78° /68°
20%
Partly sunny and humid

RealFeel®82°

RealFeel Shade™80°

Max UV Index10 (Very High)

WindSSE 12 mph

Wed 7/9

85° /68°
40%
A thunderstorm in spots in the morning; otherwise, mostly sunny, warmer and very humid

RealFeel®94°

RealFeel Shade™89°

Max UV Index10 (Very High)

WindW 9 mph

Thu 7/10

84° /67°
25%
Mostly cloudy and less humid

RealFeel®88°

RealFeel Shade™87°

Max UV Index3 (Moderate)

WindSSE 10 mph

Fri 7/11

86° /68°
25%
Humid with clouds and sunshine

RealFeel®96°

RealFeel Shade™91°

Max UV Index7 (High)

WindSE 6 mph

Sat 7/12

84° /67°
65%
A couple of morning showers; otherwise, humid with decreasing clouds

RealFeel®92°

RealFeel Shade™84°

Max UV Index10 (Very High)

WindWNW 7 mph

Sun 7/13

78° /65°
25%
Increasing clouds

RealFeel®85°

RealFeel Shade™80°

Max UV Index9 (Very High)

WindE 4 mph

Mon 7/14

78° /68°
70%
Mostly cloudy and humid; morning showers followed by a thunderstorm in the afternoon

RealFeel®86°

RealFeel Shade™84°

Max UV Index3 (Moderate)

WindS 10 mph

Tue 7/15

79° /67°
68%
Cloudy and humid; a passing shower in the morning followed by periods of rain in the afternoon

RealFeel®81°

RealFeel Shade™80°

Max UV Index2 (Low)

WindNE 6 mph

Wed 7/16

78° /68°
25%
A thick cloud cover and humid

RealFeel®79°

RealFeel Shade™79°

Max UV Index3 (Moderate)

WindE 8 mph

Thu 7/17

78° /68°
55%
Continued cloudy and humid; a little rain in the morning followed by a thunderstorm in spots in the afternoon

RealFeel®83°

RealFeel Shade™82°

Max UV Index2 (Low)

WindENE 7 mph

Fri 7/18

79° /67°
25%
Humid with sun followed by increasing clouds

RealFeel®83°

RealFeel Shade™83°

Max UV Index7 (High)

WindSE 6 mph

Sat 7/19

80° /69°
25%
Uncomfortably humid with clouds limiting sun

RealFeel®89°

RealFeel Shade™89°

Max UV Index5 (Moderate)

WindS 9 mph

Sun 7/20

85° /68°
58%
Humid with times of clouds and sun; a passing thunderstorm in the morning followed by a thundershower in the afternoon

RealFeel®92°

RealFeel Shade™91°

Max UV Index5 (Moderate)

WindENE 6 mph

Mon 7/21

81° /67°
25%
Mostly cloudy and humid

RealFeel®84°

RealFeel Shade™83°

Max UV Index5 (Moderate)

WindNNW 5 mph

Tue 7/22

78° /65°
25%
Turning cloudy

RealFeel®82°

RealFeel Shade™80°

Max UV Index5 (Moderate)

WindENE 2 mph

Wed 7/23

79° /68°
25%
Humid with sunshine and a few clouds

RealFeel®87°

RealFeel Shade™84°

Max UV Index10 (Very High)

WindSE 5 mph

Thu 7/24

81° /68°
25%
Mostly cloudy and humid

RealFeel®86°

RealFeel Shade™84°

Max UV Index9 (Very High)

WindENE 6 mph

Fri 7/25

79° /65°
20%
Mostly sunny

RealFeel®84°

RealFeel Shade™77°

Max UV Index9 (Very High)

WindESE 8 mph

Sat 7/26

78° /66°
20%
Intervals of clouds and sunshine

RealFeel®82°

RealFeel Shade™77°

Max UV Index9 (Very High)

WindSSE 8 mph

Sun 7/27

80° /67°
25%
Rather cloudy

RealFeel®81°

RealFeel Shade™81°

Max UV Index7 (High)

WindSSE 7 mph

Mon 7/28

81° /67°
25%
Partly sunny

RealFeel®87°

RealFeel Shade™81°

Max UV Index6 (High)

WindS 6 mph

Tue 7/29

83° /68°
10%
Mostly sunny and humid

RealFeel®90°

RealFeel Shade™84°

Max UV Index9 (Very High)

WindS 5 mph

Wed 7/30

85° /68°
5%
Brilliant sunshine

RealFeel®88°

RealFeel Shade™85°

Max UV Index9 (Very High)

WindS 7 mph

Thu 7/31

85° /67°
25%
Clouds to start, then sunshine returns

RealFeel®88°

RealFeel Shade™84°

Max UV Index5 (Moderate)

WindSW 9 mph

Fri 8/1

84° /67°
20%
Times of clouds and sun

RealFeel®90°

RealFeel Shade™82°

Max UV Index9 (Very High)

WindN 6 mph

Sat 8/2

78° /65°
25%
Clouds and sun

RealFeel®79°

RealFeel Shade™76°

Max UV Index4 (Moderate)

WindE 6 mph

Sun 8/3

77° /66°
80%
Plenty of clouds with afternoon rain

RealFeel®74°

RealFeel Shade™72°

Max UV Index3 (Moderate)

WindESE 14 mph

Mon 8/4

81° /63°
63%
Partly sunny and humid with a couple of thunderstorms, especially late in the day

RealFeel®89°

RealFeel Shade™87°

Max UV Index9 (Very High)

WindSSE 5 mph

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Weather Near Alta:

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  • Sioux City, IA
  • South Sioux City, NE
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