Johnstown, CO Weather Forecast
Weld County, Colorado
Live radar, warnings and storm tracking for Johnstown, with free alerts the moment it counts.
The next few hours
Taller, warmer bars mean heavier rain. Dotted means no reading for that hour.
Hour by hour
Sunrise and sunset
Next five days, scored 0 to 100The first day or two use the HRRR and NBM cloud layers. Later days only have total cloud, so treat them as a rough guide.
Know when sunset at this place will be worth a photo
We score every sunrise and sunset here from the cloud, haze and smoke forecast, and let you know when one is likely to light up. Sunrise the evening before, sunset a few hours ahead.
Seven-day outlook
Free alerts for Johnstown
Every NWS warning, pushed to your phone, inbox or webhook the moment it is issued.
Johnstown, CO at a glance
Johnstown is home to about 19,511 people in Weld County, across 15 square miles. It ranks 34th by population of 105 places in Colorado with a forecast here. The nearest neighbour with its own forecast is Milliken, 3 miles away.
- County
- Weld County
- Population
- 19,511 2023 est.
- Land area
- 15 sq mi
- People per sq mi
- 1,264
- Forecast point
- 40.3072°N, 104.9112°W
How well can the network see Johnstown?
The nearest Doppler radar is KFTG (Denver, CO), to the SSE. Its lowest scan passes about 2,700 ft above Johnstown. Close enough to see rotation in the low part of a storm, where tornadoes form. Johnstown is closer to its radar than 55% of US cities.
The closest weather station is KFNL (Fort Collins/N Colorado Rgnl). Representative on most days, though a thunderstorm can hit one and miss the other.
Forecasts near Johnstown
- Milliken, CO3 mi
- Berthoud, CO3 mi
- Mead, CO7 mi
- Platteville, CO7 mi
- Evans, CO9 mi
- Greeley, CO10 mi
- Firestone, CO11 mi
- Loveland, CO11 mi
Elsewhere in Colorado
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