Johnstown, PA Weather Forecast | 5 Day
Updated: Mon Sep 28th 2026 2:15 PM EDT
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Fog
Mon 9-28-26
Fog with a high of 53°F and a low of 48°F. There's a moderate 49% chance of rainfall with an estimated 0in. Winds will be light at 5mph and gusts of 10.3mph at 6 PM. High humidity with average of 97% is anticipated, the maximum being 99% at 10 PM and 93% being its lowest at 4 PM. Barometric pressure is its highest of 30.03inHg at 10 PM, a lowest point of 29.97inHg at 3 PM with an avg 30inHg.
- HI: 53°F
- LO: 48°F
- Rainfall: 49% | est. 0in
- Snowfall: 0%
- Wind
4.7 mph - Humidity
97% avg. - UV Index
1.7 - Air QualityGood
- Sunrise
07:09 AM - Sunset
07:03 PM - Moonrise
07:43 PM - Moonset
09:14 AM - Moon Phase
Waning Gibbous
Scattered Showers
Weather Tomorrow, Tue 9-29-26
Scattered Showers with a high of 66°F and a low of 51°F. There's a moderate 40% chance of rainfall with an estimated 0.01in. Winds will be light at 5mph and gusts of 13.2mph at 10 PM. High humidity with average of 85% is anticipated, the maximum being 99% at 12 AM and 62% being its lowest at 3 PM. Barometric pressure is its highest of 30.1inHg at 11 AM, a lowest point of 30.03inHg at 12 AM with an avg 30.06inHg.
- HI: 66°F
- LO: 51°F
- Rainfall: 40% | est. 0.01in
- Snowfall: 0%
- Wind
4.9 mph - Humidity
85% avg. - UV Index
5 - Air QualityGood
- Sunrise
07:10 AM - Sunset
07:01 PM - Moonrise
08:13 PM - Moonset
10:22 AM - Moon Phase
Waning Gibbous
Sunny
Wed 9-30-26
Sunny with a high of 71°F and a low of 56°F. There might be light rainfall having a 11% chance. Winds will be light at 6mph and gusts of 14.8mph at 6 PM. The humidity will be on the higher side, averaging about 78%, the maximum being 95% at 3 AM and 45% being its lowest at 3 PM. Barometric pressure is its highest of 30.12inHg at 8 AM, a lowest point of 30.04inHg at 4 PM with an avg 30.09inHg.
- HI: 71°F
- LO: 56°F
- Rainfall: 11%
- Snowfall: 0%
- Wind
5.8 mph - Humidity
78% avg. - UV Index
5.8 - Air QualityGood
- Sunrise
07:11 AM - Sunset
07:00 PM - Moonrise
08:50 PM - Moonset
11:32 AM - Moon Phase
Waning Gibbous
Sunny
Thu 10-1-26
Sunny with a high of 77°F and a low of 63°F. There's a very small chance of rainfall, only about 7%. Wind will be moderate, blowing around 11mph on average and gusts of 21.3mph at 11 PM. The humidity will be on the higher side, averaging about 63%, the maximum being 81% at 10 PM and 42% being its lowest at 1 PM. Barometric pressure is its highest of 30.1inHg at 8 AM, a lowest point of 30.01inHg at 4 PM with an avg 30.05inHg.
- HI: 77°F
- LO: 63°F
- Rainfall: 7%
- Snowfall: 0%
- Wind
10.3 mph - Humidity
63% avg. - UV Index
5.8 - Air QualityGood
- Sunrise
07:12 AM - Sunset
06:58 PM - Moonrise
09:37 PM - Moonset
12:41 PM - Moon Phase
Last Quarter
Overcast
Fri 10-2-26
Overcast with a high of 70°F and a low of 47°F. Rainfall expected to have a 64% chance with an estimated 0.06in. Wind will be moderate, blowing around 11mph on average and gusts of 25.7mph at 6 AM. High humidity with average of 81% is anticipated, the maximum being 98% at 11 AM and 64% being its lowest at 12 PM. Barometric pressure is its highest of 30.25inHg at 11 PM, a lowest point of 30.02inHg at 5 AM with an avg 30.11inHg.
- HI: 70°F
- LO: 47°F
- Rainfall: 64% | est. 0.06in
- Snowfall: 0%
- Wind
10.1 mph - Humidity
81% avg. - UV Index
5 - Air QualityGood
- Sunrise
07:13 AM - Sunset
06:56 PM - Moonrise
10:35 PM - Moonset
01:46 PM - Moon Phase
Last Quarter
Overcast
Sat 10-3-26
Overcast with a high of 52°F and a low of 45°F. There might be light rainfall having a 16% chance. Winds will be light at 9mph and gusts of 29.3mph at 11 PM. The humidity will be on the higher side, averaging about 72%, the maximum being 92% at 2 AM and 47% being its lowest at 2 PM. Barometric pressure is its highest of 30.32inHg at 8 AM, a lowest point of 30.23inHg at 5 PM with an avg 30.27inHg.
- HI: 52°F
- LO: 45°F
- Rainfall: 16%
- Snowfall: 0%
- Wind
8.9 mph - Humidity
72% avg. - UV Index
4 - Air QualityTBA
- Sunrise
07:14 AM - Sunset
06:55 PM - Moonrise
11:43 PM - Moonset
02:43 PM - Moon Phase
Last Quarter
This 5-Day weather forecast is relevant for ZIP codes from 15901 through 15915, accurately covering all areas within Johnstown, PA.
Currently
 |
52°F |
29.98 inHg.
Barometer 94%
Humidity WNW 7.6 mph Wind |
| Mist | ||
National Outlook
Coastal Flooding in Mid-Atlantic as Nor'easter Strikes 09-28 to 09-30
Mon Sep 28th 2026, 3:03am PDT
Read
Heavy Rainfall and Flooding Warning for Central U.S. 10-01 to 10-05
Extended Forecast
Mon Sep 28th 2026, 3:04am PDT
Read
Mon Sep 28th 2026, 3:04am PDT
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