Weather forecast for 10 days
Johnstown, PA

Weather forecast for the weekend

Saturday, Jul 12.

Mostly Sunny
5:55 am

8:47 pm
EDT
Mostly Sunny
90°F / 72°F
  • Wind: 6mph SSW
  • Humidity: 65%
  • Precip. probability: 24%
  • Precipitation: 0"
  • UV index: 9
Tomorrow, mostly sunny and dry conditions will continue.
Rainfall is not predicted. Anticipated temperatures will peak at a hot 89.6°F and dip to a minimum of a pleasant 71.6°F.
The maximum heat index, which indicates how humid air affects the felt temperature, is evaluated at a sizzling 102.2°F. Note that heat index values are valued for light wind and location in the shade. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
The anticipated temperature will be uncommonly higher than the July average maximum of 80.2°F.
Sunrise will be at 5:55 am and sunset at 8:47 pm; tomorrow's daylight will last for 14h and 53min.

Sunday, Jul 13.

PM Thunderstorms
5:55 am

8:47 pm
EDT
PM Thunderstorms
86°F / 70°F
  • Wind: 8mph SW
  • Humidity: 72%
  • Precip. probability: 58%
  • Precipitation: 0.28"
  • UV index: 9
On Sunday, July 13, thunderstorms may roll in by the afternoon, bringing brief intense rainfall.
With a high probability, light precipitation is forecasted. The maximum temperature will be a blazing 86°F, while the minimum expected temperature is a delightful 69.8°F.
Sunday's highest temperature will be slightly warmer than the average July maximum of 80.2°F.
Sunrise will be at 5:55 am and sunset at 8:47 pm; the daylight will last for 14h and 51min.

Frequently asked questions

What is the weather forecast for Johnstown for tomorrow?
On Saturday, in Johnstown, mostly sunny weather is likely, with high visibility.
Will it rain tomorrow?
No, it will not rain tomorrow.
What will be the highest temperature tomorrow?
Tomorrow, the highest temperature will be 89.6°F, while the lowest temperature will be 71.6°F. The maximum heat index, which measures the combined effect of heat and moisture, is evaluated at 102.2°F.
Tomorrow, the maximum temperature will be noticeably higher than the average highest temperature of 80.2°F in July. Tomorrow, the lowest temperature will be also significantly higher than the average low of 58.8°F.
When is the sunrise / sunset tomorrow?
On Saturday, in Johnstown, sunrise will be at 5:55 am and sunset at 8:47 pm (EDT).
How long will the day be tomorrow?
In Johnstown, the length of the day tomorrow will be 14h and 53min.
What is the weather forecast for Johnstown for Sunday?
On Sunday, rain with scattered lightning is expected during the afternoon.
Will it rain on Sunday in Johnstown?
With a probability of 58%, light precipitation of 0.28" is predicted on Sunday.
What will be the highest temperature on Sunday?
On Sunday, the maximum temperature will be 86°F, while the minimum temperature will be 69.8°F.
What is the weather forecast for Johnstown for the next ten days?
In Johnstown, weather will be unstable, and a combination of thunderstorm-prone, wet, mostly clear and cloudy weather is predicted for the next ten days.
Will it rain in the next ten days?
Rainfall is anticipated nearly every day for the next ten days in Johnstown. With light precipitation of 0.35", Thursday will be the day with the most rainfall.
How hot will it be in the next ten days?
The maximum temperature will vary between 78.8°F and 89.6°F, while the minimum temperature will range between 66.2°F and 71.6°F.
Including the humidity's impact, the maximum feel-like temperature will range between 78.8°F and 102.2°F.
What will be the hottest and the coldest days?
Tomorrow will be the hottest day, with a maximum temperature of 89.6°F. Next Saturday will be the coldest day, with a maximum temperature of 78.8°F.

Long-term weather forecast

FriJul 11.
  • 86°F
  • 68°F
Isolated Thunderstorms
Isolated Thunderstorms
  • Wind: 6mph WSW
  • Humidity: 70%
  • UV index: 9
  • Precip. probability: 32%
  • Precipitation: 0.12"
  • 5:54 am 8:48 pm EDT
SatJul 12.
  • 90°F
  • 72°F
Mostly Sunny
Mostly Sunny
  • Wind: 6mph SSW
  • Humidity: 65%
  • UV index: 9
  • Precip. probability: 24%
  • Precipitation: 0"
  • 5:55 am 8:47 pm EDT
SunJul 13.
  • 86°F
  • 70°F
PM Thunderstorms
PM Thunderstorms
  • Wind: 8mph SW
  • Humidity: 72%
  • UV index: 9
  • Precip. probability: 58%
  • Precipitation: 0.28"
  • 5:55 am 8:47 pm EDT
MonJul 14.
  • 81°F
  • 66°F
Showers
Showers
  • Wind: 6mph W
  • Humidity: 77%
  • UV index: 9
  • Precip. probability: 43%
  • Precipitation: 0.12"
  • 5:56 am 8:46 pm EDT
TueJul 15.
  • 88°F
  • 70°F
Mostly Sunny
Mostly Sunny
  • Wind: 4mph SW
  • Humidity: 66%
  • UV index: 9
  • Precip. probability: 15%
  • Precipitation: 0"
  • 5:57 am 8:46 pm EDT
WedJul 16.
  • 88°F
  • 72°F
PM Showers
PM Showers
  • Wind: 6mph SSW
  • Humidity: 68%
  • UV index: 9
  • Precip. probability: 34%
  • Precipitation: 0.12"
  • 5:58 am 8:45 pm EDT
ThuJul 17.
  • 86°F
  • 72°F
Thunderstorms
Thunderstorms
  • Wind: 9mph WSW
  • Humidity: 76%
  • UV index: 7
  • Precip. probability: 71%
  • Precipitation: 0.35"
  • 5:59 am 8:44 pm EDT
FriJul 18.
  • 82°F
  • 66°F
Thunderstorms
Thunderstorms
  • Wind: 9mph W
  • Humidity: 80%
  • UV index: 7
  • Precip. probability: 60%
  • Precipitation: 0.28"
  • 5:59 am 8:44 pm EDT
SatJul 19.
  • 79°F
  • 66°F
Showers
Showers
  • Wind: 6mph W
  • Humidity: 75%
  • UV index: 7
  • Precip. probability: 44%
  • Precipitation: 0.04"
  • 6:00 am 8:43 pm EDT
SunJul 20.
  • 84°F
  • 66°F
Partly Cloudy
Partly Cloudy
  • Wind: 7mph SW
  • Humidity: 68%
  • UV index: 9
  • Precip. probability: 24%
  • Precipitation: 0.04"
  • 6:01 am 8:42 pm EDT
Over the course of the next ten days, expect shifting weather, and a mix of thunderstorm-prone, damp, sun-filled and gloomy weather is forecasted.
Almost every day for the next ten days, rainfall is predicted.
In the upcoming days, the highest temperature will range between 78.8°F and 89.6°F, while the overnight low will be nearly unchanged, as the overnight low will fall between 66.2°F and 71.6°F.
Expect the hottest day on Saturday, with temperatures peaking at 89.6°F; with the highest temperature of 78.8°F, next Saturday will be the coldest day.
Including the humidity's impact, the maximum feel-like temperature may increase considerably and range between 78.8°F and a torrid 102.2°F.
July typically ranks as the warmest month in Johnstown, with average highs reaching 80.2°F and lows around 58.8°F.
Updated: Jul 11, 2025 @ 11:10:36 UTC
Published by: Weather U.S. | About Us
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