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 Johnstown Weather Forecast Summary |
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Today
Jul 18th
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Sunday
Jul 19th
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Monday
Jul 20th
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Tuesday
Jul 21st
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Wednesday
Jul 22nd
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Thundershowers |
Mostly Sunny |
Mostly Sunny |
Thundershowers |
Mostly Sunny |
78°F
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77°F
57°F |
81°F
52°F |
83°F
63°F |
76°F
55°F |
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| Johnstown Detailed Weather Forecast |
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| Saturday, July 18th, 2026 |
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Overnight |
Temperature: 64°F |
| Clear with cloudy periods with a slight chance of showers. |
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Morning |
Temperature: 66°F |
| Cloudy with a few showers. |
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Afternoon |
Temperature: 77°F |
| A mix of sun and cloud with a few showers. Chance of a thunderstorm. Windy at times. |
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Evening |
Temperature: 71°F |
| A mix of cloudy and clear skies with a chance of showers or thundershowers. Windy at times. |
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| Sunday, July 19th, 2026 |
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Overnight |
Temperature: 64°F |
| A mix of clear and cloudy skies. |
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Morning |
Temperature: 66°F |
| Sunny with cloudy periods. |
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Afternoon |
Temperature: 76°F |
| Mostly sunny. |
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Evening |
Temperature: 62°F |
| Clear. |
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| Monday, July 20th, 2026 |
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Overnight |
Temperature: 53°F |
| Clear. |
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Morning |
Temperature: 67°F |
| Sunny. |
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Afternoon |
Temperature: 80°F |
| Mostly sunny. |
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Evening |
Temperature: 66°F |
| Clear with cloudy periods. |
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| Tuesday, July 21st, 2026 |
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Overnight |
Temperature: 64°F |
| A mix of cloudy and clear skies. |
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Morning |
Temperature: 71°F |
| A mix of cloud and sun. Slight chance of a thunderstorm. |
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Afternoon |
Temperature: 76°F |
| Mostly cloudy with showers likely. Chance of a thunderstorm. Windy at times. |
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Evening |
Temperature: 65°F |
| Clear with cloudy periods with a few showers. Slight chance of a thunderstorm. |
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| Wednesday, July 22nd, 2026 |
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Overnight |
Temperature: 66°F |
| A mix of clear and cloudy skies. Slight chance of a thunderstorm. |
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Morning |
Temperature: 64°F |
| A mix of cloud and sun. |
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Afternoon |
Temperature: 75°F |
| Sunny. Windy at times. |
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Evening |
Temperature: 57°F |
| Clear. Windy at times. |
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| Thursday, July 23rd, 2026 |
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Overnight |
Temperature: 53°F |
| Clear. |
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Morning |
Temperature: 60°F |
| Sunny. Windy at times. |
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Afternoon |
Temperature: 69°F |
| A mix of sun and cloud. Windy at times. |
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Evening |
Temperature: 59°F |
| Clear. |
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| Friday, July 24th, 2026 |
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Overnight |
Temperature: 51°F |
| Clear. |
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Morning |
Temperature: 64°F |
| Sunny. |
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Afternoon |
Temperature: 75°F |
| Mostly sunny. |
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Evening |
Temperature: 63°F |
| Clear with cloudy periods. |
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| Saturday, July 25th, 2026 |
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Overnight |
Temperature: 58°F |
| A mix of cloudy and clear skies. |
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Morning |
Temperature: 62°F |
| A mix of cloud and sun. |
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Afternoon |
Temperature: 63°F |
| Cloudy. |
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Evening |
Temperature: 59°F |
| Mostly cloudy with a chance of showers. |
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| Sunday, July 26th, 2026 |
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Overnight |
Temperature: 60°F |
| A mix of cloudy and clear skies. |
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Morning |
Temperature: 63°F |
| A mix of cloud and sun. |
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Afternoon |
Temperature: 77°F |
| Sunny with cloudy periods. |
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Evening |
Temperature: 68°F |
| Mostly clear. |
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