| National Weather Service Forecast for:
Johnstown CO Issued by: National Weather Service Denver-Boulder, CO |
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| Updated: 12:45 pm MDT Jun 29, 2026 | ||||||||||||||||||
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| Tonight |
Patchy smoke before 1am. Mostly clear, with a low around 53. North northwest wind 5 to 7 mph becoming light and variable after midnight. |
| Tuesday |
Patchy smoke between 11am and noon. Sunny, with a high near 91. Light and variable wind becoming southeast 9 to 14 mph in the morning. Winds could gust as high as 22 mph. |
| Tuesday Night |
Patchy smoke after 5am. Mostly cloudy, then gradually becoming clear, with a low around 55. East northeast wind 5 to 14 mph becoming southwest after midnight. Winds could gust as high as 22 mph. |
| Wednesday |
Patchy smoke before 7am. Sunny, with a high near 91. Light and variable wind becoming east southeast 8 to 13 mph in the morning. Winds could gust as high as 22 mph. |
| Wednesday Night |
Partly cloudy, with a low around 56. East wind 5 to 13 mph becoming west after midnight. Winds could gust as high as 21 mph. |
| Thursday |
Sunny, with a high near 93. |
| Thursday Night |
Partly cloudy, with a low around 59. |
| Friday |
Sunny and hot, with a high near 97. |
| Friday Night |
Partly cloudy, with a low around 62. |
| Independence Day |
Mostly sunny, with a high near 94. |
| Saturday Night |
Partly cloudy, with a low around 59. Breezy. |
| Sunday |
Sunny, with a high near 92. Breezy. |
| Sunday Night |
Partly cloudy, with a low around 60. Breezy. |
| Monday |
Sunny, with a high near 95. |
Forecast from NOAA-NWS for Johnstown CO.
