Johnstown 7-day weather forecast

Written by:
September 22, 2025
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Johnstown 7-day weather forecast

Stacker created the forecast for Johnstown, Pennsylvania using data from OpenWeather. This week's high is 81 °F on Monday, while the low is 57 °F on Saturday. There are expected to be 0 sunny days and rain on 5 days this week.

There are currently no weather alerts.

Monday, September 22

- High of 81 °F, low of 63 °F (57% humidity)
- Overcast with a 100% chance of rain (12 mm of rain)
- High risk of harm from sun exposure (6 UV index)
- Gentle breeze (8 mph wind)
- Sunrise at 7:03 AM, sunset at 7:13 PM
1 / 6
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Tuesday, September 23

- High of 71 °F, low of 63 °F (99% humidity)
- Overcast with a 100% chance of rain (13 mm of rain)
- Moderate risk of harm from sun exposure (4 UV index)
- Gentle breeze (8 mph wind)
- Sunrise at 7:04 AM, sunset at 7:11 PM
2 / 6
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Wednesday, September 24

- High of 69 °F, low of 62 °F (98% humidity)
- Overcast with a 100% chance of rain (8 mm of rain)
- Light breeze (6 mph wind)
- Sunrise at 7:05 AM, sunset at 7:09 PM
3 / 6
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Thursday, September 25

- High of 73 °F, low of 65 °F (83% humidity)
- Overcast with a 100% chance of rain (14 mm of rain)
- High risk of harm from sun exposure (5 UV index)
- Gentle breeze (10 mph wind)
- Sunrise at 7:06 AM, sunset at 7:08 PM
4 / 6
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Friday, September 26

- High of 71 °F, low of 59 °F (70% humidity)
- Overcast with a 30% chance of rain (1 mm of rain)
- Gentle breeze (8 mph wind)
- Sunrise at 7:07 AM, sunset at 7:06 PM
5 / 6
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Saturday, September 27

- High of 78 °F, low of 57 °F (55% humidity)
- Overcast with a 0% chance of rain
- Light breeze (5 mph wind)
- Sunrise at 7:08 AM, sunset at 7:04 PM
6 / 6
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Sunday, September 28

- High of 78 °F, low of 60 °F (43% humidity)
- Overcast with a 0% chance of rain
- Light breeze (7 mph wind)
- Sunrise at 7:09 AM, sunset at 7:03 PM

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