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Johnston, PA Weather
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Winter Center

Today Hourly

Daily

Radar MinuteCast Monthly Air Quality Health & Activities

July 5 - August 18

Sat 7/5

90° /67°
1%
Mostly sunny

RealFeel®95°

RealFeel Shade™88°

Max UV Index11 (Extreme)

WindS 7 mph

Sun 7/6

92° /70°
0%
Hot with plenty of sun; possible danger of dehydration and heatstroke while doing strenuous activities

RealFeel®97°

RealFeel Shade™91°

Max UV Index11 (Extreme)

WindS 8 mph

Mon 7/7

91° /72°
40%
Partly sunny and humid; a thunderstorm on the prowl in the afternoon

RealFeel®104°

RealFeel Shade™95°

Max UV Index11 (Extreme)

WindSSW 4 mph

Tue 7/8

89° /68°
40%
Intervals of clouds and sunshine with a thundershower in a couple of spots; humid

RealFeel®102°

RealFeel Shade™93°

Max UV Index11 (Extreme)

WindWNW 7 mph

Wed 7/9

90° /70°
2%
Less humid with intervals of clouds and sunshine

RealFeel®98°

RealFeel Shade™90°

Max UV Index6 (High)

WindNNW 1 mph

Thu 7/10

86° /69°
75%
Cloudy and humid; a thunderstorm or two in the afternoon

RealFeel®92°

RealFeel Shade™87°

Max UV Index5 (Moderate)

WindSSE 6 mph

Fri 7/11

82° /68°
6%
Clouds giving way to some sun and humid

RealFeel®94°

RealFeel Shade™85°

Max UV Index8 (Very High)

WindNW 5 mph

Sat 7/12

83° /67°
1%
Partly sunny and humid

RealFeel®90°

RealFeel Shade™84°

Max UV Index10 (Very High)

WindN 5 mph

Sun 7/13

85° /68°
57%
Mostly cloudy with a couple of showers, mainly later

RealFeel®87°

RealFeel Shade™85°

Max UV Index4 (Moderate)

WindSSE 6 mph

Mon 7/14

84° /69°
55%
Cloudy and humid with a little rain

RealFeel®94°

RealFeel Shade™93°

Max UV Index6 (High)

WindSSE 5 mph

Tue 7/15

87° /70°
55%
Cloudy and humid; a little rain in the afternoon

RealFeel®101°

RealFeel Shade™99°

Max UV Index6 (High)

WindNW 1 mph

Wed 7/16

86° /69°
76%
Very humid with rain

RealFeel®94°

RealFeel Shade™94°

Max UV Index2 (Low)

WindESE 4 mph

Thu 7/17

87° /70°
75%
Very humid with rain

RealFeel®91°

RealFeel Shade™91°

Max UV Index2 (Low)

WindNNE 6 mph

Fri 7/18

88° /67°
25%
Mainly cloudy and uncomfortably humid

RealFeel®98°

RealFeel Shade™97°

Max UV Index4 (Moderate)

WindENE 2 mph

Sat 7/19

88° /70°
40%
Humid with intervals of clouds and sunshine; a thunderstorm in spots in the afternoon

RealFeel®95°

RealFeel Shade™93°

Max UV Index7 (High)

WindN 5 mph

Sun 7/20

84° /69°
40%
Cloudy and humid; a thundershower in spots in the morning followed by a thunderstorm in spots in the afternoon

RealFeel®90°

RealFeel Shade™90°

Max UV Index2 (Low)

WindE 4 mph

Mon 7/21

83° /70°
56%
A couple of morning showers; otherwise, mostly cloudy and humid

RealFeel®90°

RealFeel Shade™90°

Max UV Index3 (Moderate)

WindSE 2 mph

Tue 7/22

85° /70°
10%
Sunny and humid

RealFeel®99°

RealFeel Shade™89°

Max UV Index10 (Very High)

WindW 4 mph

Wed 7/23

89° /71°
25%
Increasing cloudiness and humid

RealFeel®97°

RealFeel Shade™94°

Max UV Index7 (High)

WindSW 5 mph

Thu 7/24

88° /70°
65%
Mostly cloudy and humid; a couple of showers and a thunderstorm in the afternoon

RealFeel®94°

RealFeel Shade™94°

Max UV Index4 (Moderate)

WindW 5 mph

Fri 7/25

83° /66°
25%
Turning cloudy and less humid

RealFeel®92°

RealFeel Shade™82°

Max UV Index10 (Very High)

WindNNW 5 mph

Sat 7/26

83° /70°
10%
Sunny and humid

RealFeel®93°

RealFeel Shade™87°

Max UV Index10 (Very High)

WindS 6 mph

Sun 7/27

88° /70°
25%
Cloudy and humid

RealFeel®95°

RealFeel Shade™95°

Max UV Index3 (Moderate)

WindW 5 mph

Mon 7/28

88° /69°
62%
A couple of morning showers and a thunderstorm; otherwise, humid with considerable cloudiness

RealFeel®96°

RealFeel Shade™95°

Max UV Index3 (Moderate)

WindSW 4 mph

Tue 7/29

83° /69°
61%
A couple of showers in the morning; otherwise, continued cloudy and humid

RealFeel®90°

RealFeel Shade™89°

Max UV Index3 (Moderate)

WindW 2 mph

Wed 7/30

82° /68°
10%
Mostly sunny and humid

RealFeel®90°

RealFeel Shade™84°

Max UV Index10 (Very High)

WindWNW 6 mph

Thu 7/31

83° /68°
25%
Partly sunny

RealFeel®87°

RealFeel Shade™82°

Max UV Index9 (Very High)

WindNW 5 mph

Fri 8/1

82° /65°
25%
Times of clouds and sun

RealFeel®89°

RealFeel Shade™84°

Max UV Index5 (Moderate)

WindNE 2 mph

Sat 8/2

81° /69°
65%
Mostly cloudy and humid; a couple of showers and a thunderstorm in the afternoon

RealFeel®87°

RealFeel Shade™84°

Max UV Index4 (Moderate)

WindSE 6 mph

Sun 8/3

82° /70°
25%
Humid with clouds and sunshine

RealFeel®89°

RealFeel Shade™85°

Max UV Index6 (High)

WindSSW 8 mph

Mon 8/4

83° /70°
20%
Humid with sunshine and a few clouds

RealFeel®92°

RealFeel Shade™85°

Max UV Index9 (Very High)

WindWSW 7 mph

Tue 8/5

84° /69°
25%
Mostly cloudy and humid

RealFeel®91°

RealFeel Shade™89°

Max UV Index3 (Moderate)

WindSW 4 mph

Wed 8/6

83° /69°
64%
Mostly cloudy and humid; a couple of showers and a thunderstorm in the afternoon

RealFeel®86°

RealFeel Shade™86°

Max UV Index3 (Moderate)

WindW 6 mph

Thu 8/7

81° /65°
75%
Cloudy; a passing morning shower followed by rain in the afternoon

RealFeel®77°

RealFeel Shade™77°

Max UV Index2 (Low)

WindNE 7 mph

Fri 8/8

79° /67°
25%
A thick cloud cover

RealFeel®81°

RealFeel Shade™81°

Max UV Index2 (Low)

WindSE 2 mph

Sat 8/9

82° /69°
25%
Rather cloudy and humid

RealFeel®90°

RealFeel Shade™88°

Max UV Index2 (Low)

WindSSW 5 mph

Sun 8/10

86° /69°
25%
Humid with decreasing clouds

RealFeel®99°

RealFeel Shade™92°

Max UV Index8 (Very High)

WindSW 5 mph

Mon 8/11

86° /68°
25%
Mostly cloudy and humid

RealFeel®93°

RealFeel Shade™93°

Max UV Index4 (Moderate)

WindW 7 mph

Tue 8/12

85° /69°
41%
Mostly cloudy and humid with a shower in places

RealFeel®92°

RealFeel Shade™91°

Max UV Index3 (Moderate)

WindENE 4 mph

Wed 8/13

82° /69°
25%
Humid with clouds giving way to some sun

RealFeel®94°

RealFeel Shade™91°

Max UV Index3 (Moderate)

WindSSW 5 mph

Thu 8/14

87° /68°
25%
Humid with clouds and sun

RealFeel®93°

RealFeel Shade™92°

Max UV Index6 (High)

WindWSW 6 mph

Fri 8/15

85° /69°
25%
Humid with times of sun and clouds

RealFeel®93°

RealFeel Shade™90°

Max UV Index6 (High)

WindWSW 7 mph

Sat 8/16

86° /64°
65%
A couple of showers and a thunderstorm in the morning; otherwise, humid with considerable clouds

RealFeel®88°

RealFeel Shade™87°

Max UV Index2 (Low)

WindNNW 6 mph

Sun 8/17

80° /63°
20%
Mostly sunny and less humid

RealFeel®85°

RealFeel Shade™79°

Max UV Index8 (Very High)

WindN 5 mph

Mon 8/18

83° /63°
1%
Low humidity with partial sunshine

RealFeel®89°

RealFeel Shade™83°

Max UV Index8 (Very High)

WindNW 4 mph

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World North America United States Pennsylvania Johnston

Weather Near Johnston:

  • Harrisburg, PA
  • Lancaster, PA
  • York, PA
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