Johnstown climate
Allegheny seasons bring cold winters, humid summer days, rain, snow, and changing trail access
Open-Meteo historical weather reanalysis for 1991 through 2020 at the Johnstown coordinate lists a summer high reference of 78.9 degrees Fahrenheit and a winter low reference of 24 degrees. These are coordinate reanalysis values rather than a weather station inside a particular home. Plan for heating, cooling, snow, ice, rain, and the timing of outdoor and care trips rather than relying on a single season.
Published climate measures place Johnstown in a mild band and list humidity at 85 percent. Pair that with flood zones, river corridors, mountain terrain, and trail conditions. Inspect heating, insulation, windows, roof, gutters, drainage, foundation, basement, snow removal, power, internet, indoor comfort, and an alternative to trails when weather or low energy changes the day.
Living through the seasons
Summers are the easier season. Winter comfort deserves a closer look.
- Overall Comfort
- Good
2.6 / 5
- Average Summer High
- 81°F
- Days Above 90°F
- 5 days/year
- Summer Feel
- Excellent
Mild · 81°F
Excellent
4.8 / 5
- Average Winter Low
- 23°F / -5°C
- Days Below Freezing
- 135 days/year
- Winter Feel
- Poor
Fair
Poor
1 / 5
The shape of the year
Humidity, comfortable months, and sunshine show how the seasons differ.
- Humidity
- 79%
- Comfortable Months
- 5 months
- Solar Exposure
- 1373 peak sun hrs/yr
Fair
Good
Air, allergies, and weather
Air quality and allergies shape day to day comfort. The best months and weather risks help with timing.
Air and allergies
- Air Quality
- Excellent
- Allergy Levels
- High
4.7 / 5
Poor
Current AQI
Checking…
Current PM2.5
Checking…
Timing and weather
- Long Term Fine Particle Pollution
- 5.6 µg/m³ 2021-2025 modeled average
- Best Months
- May, Jun, Jul, Aug, Sep
- Toughest Months
- Jan, Feb, Dec
- Heat Risk
- Low
- Drought Risk
- Low - Medium (0.2-0.4)
- Weather Volatility
- Strong
Good · 5.6 µg/m³ 2021-2025 modeled average
Very Good
3.8 / 5
Johnstown in everyday life
Could Johnstown work for you?
What may work well
- The coordinate reanalysis makes the winter and summer planning range visible without promising conditions at a particular home.
- Johnstown's parks, flood memorial, city programs, and indoor home choices can give the year more than one way to spend the day.
What to think about
- Heat, humidity, heavy rain, flooding, drainage, power, and storm preparation can affect outdoor access.
- Winter cold, snow, ice, heating, steps, roads, and trail maintenance can affect errands, care, and recreation.
- Coordinate reanalysis describes a modeled record, not the conditions inside a particular home.
Choose Johnstown for the whole year
Inspect comfort systems
Review heating, air conditioning, insulation, windows, shade, roof, gutters, drainage, foundation, trees, power, water, and internet.
Plan around heat, rain, and cold
Pair parks, trails, meals, errands, care, and regional outings with suitable hours, indoor choices, hydration, alerts, warm clothing, and a weather backup.
Price seasonal upkeep
Ask about heating, cooling, roof, drainage, foundation, basement, trees, snow, ice, flood insurance, storm repairs, power, and the road to care.
Questions retirees ask
What is summer like in Johnstown?
The published coordinate reanalysis gives a summer high reference of 78.9 degrees Fahrenheit, with humidity listed at 85 percent. Check cooling, shade, hydration, indoor comfort, flood conditions, and the timing of outings.
Does Johnstown have cold winters?
Yes. The same coordinate record lists a winter low reference of 24 degrees Fahrenheit. Plan for reliable heat, safe steps, snow and ice, power continuity, winter maintenance, and a workable care route.
Johnstown's climate can suit someone who accepts Pennsylvania winter planning and humid summer days, provided the home handles heating, cooling, rain, snow, flood exposure, drainage, power, and safe travel.
Sources
Climate comfort helps estimate how practical daily life may feel across the year, especially for heat, humidity, cold, and seasonal constraints.
Seasonal timing, health conditions, air conditioning, air quality, and elevation can change the lived experience.
- NASA POWER
Used for Overall Comfort, Summer Feel, Average Summer High, Days Above 90°F, Winter Feel, Average Winter Low, Days Below Freezing, Humidity, Comfortable Months, Solar Exposure, Best Months, Toughest Months, Allergy Levels, Heat Risk
- Open-Meteo Air Quality + Humidity Heuristic
Used for Air Quality, Long-Term Fine-Particle Pollution, Weather Volatility
Checked 2026-07-10
- World Resources Institute (WRI)
Used for Drought Risk
Checked 2026-07-13
Partnerships never affect rankings, scores, methodology, or inclusion.
Partner with Retirement ListsResearch and writing byGrant Gibson
How this city research is made
Retirement Lists uses documented public sources and methods to research, review, and correct city information. Read our Editorial Policy.