Johnstown 7-day weather forecast

Written by:
July 21, 2025
ESOlex // Shutterstock

Johnstown 7-day weather forecast

Stacker created the forecast for Johnstown, Pennsylvania using data from OpenWeather. This week's high is 91 °F on Thursday, while the low is 53 °F on Tuesday. There are expected to be 3 sunny days and rain on 3 days this week.

There are currently no weather alerts.

Monday, July 21

- High of 83 °F, low of 60 °F (39% humidity)
- Sunny with a 0% chance of rain
- Very high risk of harm from sun exposure (9 UV index)
- Gentle breeze (9 mph wind)
- Sunrise at 6:03 AM, sunset at 8:40 PM
1 / 6
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Tuesday, July 22

- High of 80 °F, low of 53 °F (41% humidity)
- Mostly sunny with a 0% chance of rain
- Very high risk of harm from sun exposure (10 UV index)
- Light breeze (6 mph wind)
- Sunrise at 6:04 AM, sunset at 8:39 PM
2 / 6
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Wednesday, July 23

- High of 85 °F, low of 57 °F (50% humidity)
- Partly sunny with a 0% chance of rain
- Very high risk of harm from sun exposure (10 UV index)
- Gentle breeze (8 mph wind)
- Sunrise at 6:05 AM, sunset at 8:38 PM
3 / 6
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Thursday, July 24

- High of 91 °F, low of 64 °F (43% humidity)
- Mostly sunny with a 0% chance of rain
- Very high risk of harm from sun exposure (10 UV index)
- Gentle breeze (9 mph wind)
- Sunrise at 6:06 AM, sunset at 8:38 PM
- New moon
4 / 6
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Friday, July 25

- High of 90 °F, low of 69 °F (49% humidity)
- Mostly cloudy with a 100% chance of rain (4 mm of rain)
- Moderate breeze (14 mph wind)
- Sunrise at 6:06 AM, sunset at 8:37 PM
5 / 6
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Saturday, July 26

- High of 85 °F, low of 68 °F (65% humidity)
- Overcast with a 100% chance of rain (7 mm of rain)
- Light breeze (7 mph wind)
- Sunrise at 6:07 AM, sunset at 8:36 PM
6 / 6
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Sunday, July 27

- High of 82 °F, low of 69 °F (78% humidity)
- Overcast with a 100% chance of rain (4 mm of rain)
- Gentle breeze (10 mph wind)
- Sunrise at 6:08 AM, sunset at 8:35 PM

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