| National Weather Service Forecast for:
Johnstown CO Issued by: National Weather Service Denver-Boulder, CO |
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| Updated: 12:47 pm MDT Apr 6, 2026 | ||||||||||||||||||
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| This Afternoon |
Mostly sunny, with a high near 70. Breezy, with an east wind 9 to 16 mph, with gusts as high as 23 mph. |
| Tonight |
Mostly cloudy, with a low around 34. Breezy, with an east wind 12 to 17 mph becoming light after midnight. Winds could gust as high as 26 mph. |
| Tuesday |
A 20 percent chance of showers after 3pm. Mostly cloudy, then gradually becoming sunny, with a high near 71. Light east wind becoming south southeast 5 to 10 mph in the afternoon. Winds could gust as high as 15 mph. |
| Tuesday Night |
A 20 percent chance of showers before midnight. Partly cloudy, with a low around 39. South wind 6 to 9 mph becoming west after midnight. Winds could gust as high as 17 mph. |
| Wednesday |
Mostly sunny, with a high near 72. Breezy, with a west wind 6 to 15 mph becoming east northeast in the afternoon. Winds could gust as high as 26 mph. |
| Wednesday Night |
A 20 percent chance of showers before midnight. Partly cloudy, with a low around 37. |
| Thursday |
A 30 percent chance of showers after noon. Partly sunny, with a high near 72. |
| Thursday Night |
A chance of showers before midnight. Mostly cloudy, with a low around 41. |
| Friday |
A chance of showers after noon. Mostly cloudy, with a high near 70. |
| Friday Night |
A chance of showers, mainly before midnight. Mostly cloudy, with a low around 42. |
| Saturday |
A chance of showers. Mostly cloudy, with a high near 75. |
| Saturday Night |
A chance of showers. Mostly cloudy, with a low around 43. |
| Sunday |
A chance of showers. Partly sunny, with a high near 73. |
Forecast from NOAA-NWS for Johnstown CO.