See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
07:27
Sunrise
19:07
Sunset
Moon
Waxing Gibbous
18:42
Moonrise
05:38
Moonset
Daily Forecast
Today
Saturday
Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday
Air Quality Data Available
Upgrade to access real-time air quality data for Johnstown.
Resources
UV Index
Humidity
Current stargazing conditions?
See sky darkness, moon phase, and the best viewing window for Johnstown.
View stargazing scoreWeather in Johnstown today, September 25, 2026
Misty spells are likely in Johnstown on September 25, 2026, especially during quieter hours. The day can open dull before any clearer intervals arrive. Expect a grey start, with morning cloud around 99% by 11:00. Outdoor plans early on should not rely on bright skies.
The day peaks near 15°C and cools toward 11°C. Expect humidity between 71% and 90%, most humid near 10:00. Expect gentle winds, highest near 23:00 at 4.6 km/h.
Through the afternoon cloud remains the main feature, with cover near 100% around 12:00. Bright spells should stay limited even as the day wears on. Horizontal visibility sits around 30.7 km, briefly nearer 5.4 km. Daylight runs from 07:27 to 19:07, lasting 11 hours 40 minutes of sunlight today.
In short, fog or mist is the watchpoint in Johnstown on September 25, 2026; leave extra time for travel around a high of 15°C.
Frequently asked questions about weather in Johnstown
How warm does it get in Johnstown?
The warmest month in Johnstown is July, with average high temperatures of 19°C. The average temperature during this period is around 16°C.
How cold does it get in Johnstown?
The coldest month in Johnstown is January, with average low temperatures of 3°C. The average temperature during this period is around 5°C.
What is the wettest time of year in Johnstown?
The wettest month in Johnstown is September, with an average of 88mm of precipitation.
What is the driest time of year in Johnstown?
The driest month in Johnstown is January, with an average of 63mm of precipitation.