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Thunderstorms to rattle central, eastern US this week. Get the forecast. Chevron right
More cool spells, risks of frosts and freezes coming to Midwest, Northeast. See the forecast. Chevron right

Johnstown, IL

71°F
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Johnstown

Illinois

71°
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Johnstown, IL Weather
Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

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May 4 - May 18

Mon 5/4

76° /56°
97%
Considerable cloudiness with a couple of showers and a thunderstorm; breezy; thunderstorms can bring hail and damaging winds

RealFeel®74°

RealFeel Shade™72°

Max UV Index5.0 (Moderate)

WindSSW 15 mph

Tue 5/5

61° /46°
94%
Cooler with periods of rain and a thunderstorm

RealFeel®59°

RealFeel Shade™57°

Max UV Index2.0 (Low)

WindNNW 9 mph

Wed 5/6

58° /41°
25%
Remaining cloudy and cool

RealFeel®56°

RealFeel Shade™55°

Max UV Index3.0 (Moderate)

WindN 9 mph

Thu 5/7

61° /43°
55%
Times of clouds and sun with a brief shower; cool

RealFeel®60°

RealFeel Shade™57°

Max UV Index5.0 (Moderate)

WindWNW 9 mph

Fri 5/8

70° /46°
67%
Cloudy with a brief shower or two

RealFeel®69°

RealFeel Shade™67°

Max UV Index2.0 (Low)

WindSSW 10 mph

Sat 5/9

72° /51°
56%
Partly sunny with a passing shower in the afternoon

RealFeel®80°

RealFeel Shade™69°

Max UV Index10.0 (Very High)

WindSW 7 mph

Sun 5/10

69° /50°
3%
Mostly cloudy

RealFeel®72°

RealFeel Shade™67°

Max UV Index5.0 (Moderate)

WindSE 7 mph

Mon 5/11

68° /48°
3%
Sunshine and a few clouds

RealFeel®70°

RealFeel Shade™64°

Max UV Index10.0 (Very High)

WindNNW 10 mph

Tue 5/12

67° /50°
1%
Intervals of clouds and sunshine

RealFeel®72°

RealFeel Shade™66°

Max UV Index5.0 (Moderate)

WindNNW 7 mph

Wed 5/13

72° /55°
71%
Cloudy with showers

RealFeel®69°

RealFeel Shade™69°

Max UV Index3.0 (Moderate)

WindSSE 12 mph

Thu 5/14

71° /49°
0%
More sunshine than clouds

RealFeel®74°

RealFeel Shade™68°

Max UV Index10.0 (Very High)

WindNNW 10 mph

Fri 5/15

71° /53°
0%
Plenty of sunshine

RealFeel®77°

RealFeel Shade™72°

Max UV Index10.0 (Very High)

WindNW 7 mph

Sat 5/16

73° /55°
65%
Humid with periods of rain

RealFeel®76°

RealFeel Shade™73°

Max UV Index4.0 (Moderate)

WindW 16 mph

Sun 5/17

77° /53°
63%
Cloudy with a couple of showers and a thunderstorm

RealFeel®75°

RealFeel Shade™75°

Max UV Index2.0 (Low)

WindSSW 8 mph

Mon 5/18

74° /59°
55%
Times of clouds and sun with a couple of showers, mainly early in the day

RealFeel®76°

RealFeel Shade™73°

Max UV Index5.0 (Moderate)

WindE 2 mph

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World North America United States Illinois Johnstown

Weather Near Johnstown:

  • Champaign, IL
  • Decatur, IL
  • Springfield, IL
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