Local weather forecast

Weather in Johnstown, PA

Updated 2026-08-11 12:15 local time · ZIP codes 15901, 15902, 15904, 15905 + more

Now71°F

Cloudy

High / Low81° / 65°

Rain chance76%

Wind12 mph

Weather alerts

Active alerts

Flood Watch issued August 11 at 2:38AM EDT until August 12 at 5:00AM EDT by NWS State College PA

* WHAT...Flash flooding caused by excessive rainfall is possible. * WHERE...Somerset county. * WHEN...Through late tonight. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Creeks and streams may rise out of their banks. * ADDITIONAL DETAILS... - Several rounds of thunderstorms today and tonight will track southeast across the region and bring another 1 to 2 inches of rain to most parts of Somerset county. Localized additional rainfall amounts of up to 3 inches are possible where multiple storms train over the same area. - http://www.weather.gov/safety/flood

Safety instructions

You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.

Hourly

Next hours

Now

71°11% rain

1 PM

75°18% rain

2 PM

78°9% rain

3 PM

78°7% rain

4 PM

81°5% rain

5 PM

80°4% rain

6 PM

81°6% rain

7 PM

80°8% rain

8 PM

73°10% rain

9 PM

72°10% rain

10 PM

71°84% rain

11 PM

69°79% rain

Forecast

3-day weather forecast

Today2026-08-11

81° 65°Sunny

Rain 76%Gust 20 mph

Tomorrow2026-08-12

79° 62°Fog

Rain 76%Gust 11 mph

Thursday2026-08-13

80° 59°Fog

Rain 25%Gust 7 mph

Conditions

Weather details

Feels like71°F

Humidity88%

Pressure30.02 inHg

Visibility10 mi

Wind12 mph W

Wind gusts14 mph

Precipitation0.00 in

UV index6

Daylight

Sunrise, sunset and moon

Sunrise06:23 AM

Sunset08:18 PM

Moonrise04:21 AM

Moon phaseNew Moon

Practical guide

Weather insights for today

Take an umbrella

Rain chance reaches about 84% over the next 12 hours.

Light layers should work

It feels like 71°F with winds near 12 mph.

Best window: 8 PM

73°F, 10% rain chance and 9 mph wind.

Use extra caution while driving

Visibility is around 10 mi; gusts may reach 31 mph.

Running conditions are less comfortable

Current temperature is 71°F, wind 12 mph, rain chance up to 84%.

Moderate UV protection recommended

UV index is 6. Sunscreen and sunglasses are sensible for longer outdoor time.

Johnstown weather today

Cloudy and 71°F in Johnstown, PA. Today's high is 81°F with a 76% rain chance. Winds are around 12 mph with gusts near 14 mph. Relative humidity is 88%, pressure is 30.02 inHg, and visibility is about 10 miles.

Tonight and tomorrow in Johnstown

Sunrise is at 06:23 AM and sunset is at 08:18 PM. Tomorrow's forecast calls for Fog with a high near 79°F and a low near 62°F. The maximum rain chance is 76%.

Nearby

Weather near Johnstown

Parkhill, PA~3 mi away Davidsville, PA~6 mi away Elton, PA~6 mi away South Fork, PA~7 mi away Salix, PA~7 mi away Saint Michael, PA~7 mi away Mineral Point, PA~8 mi away Seanor, PA~8 mi away

Pennsylvania

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