| National Weather Service Forecast for:
Johnstown CO Issued by: National Weather Service Denver-Boulder, CO |
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| Updated: 2:33 pm MDT May 30, 2025 | ||||||||||||||||||
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| Tonight |
Partly cloudy, with a low around 51. Northwest wind around 6 mph. |
| Saturday |
Sunny, with a high near 81. Light and variable wind becoming east 5 to 7 mph in the afternoon. |
| Saturday Night |
Mostly clear, with a low around 51. East wind 5 to 7 mph becoming calm in the evening. |
| Sunday |
A 20 percent chance of showers and thunderstorms after noon. Sunny, with a high near 88. Calm wind becoming southeast 5 to 8 mph in the afternoon. Winds could gust as high as 15 mph. |
| Sunday Night |
Partly cloudy, with a low around 56. South wind 5 to 8 mph becoming northwest after midnight. Winds could gust as high as 15 mph. |
| Monday |
Showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 85. Chance of precipitation is 60%. |
| Monday Night |
Showers and possibly a thunderstorm. Low around 51. Chance of precipitation is 90%. |
| Tuesday |
Showers likely, with thunderstorms also possible after noon. Cloudy, with a high near 61. |
| Tuesday Night |
Showers likely and possibly a thunderstorm before midnight, then a chance of showers. Cloudy, with a low around 48. |
| Wednesday |
A chance of showers, then showers likely and possibly a thunderstorm after noon. Cloudy, with a high near 66. |
| Wednesday Night |
A chance of showers and thunderstorms. Mostly cloudy, with a low around 48. |
| Thursday |
A chance of showers and thunderstorms. Mostly sunny, with a high near 75. |
| Thursday Night |
Mostly cloudy, with a low around 50. |
| Friday |
A slight chance of showers and thunderstorms. Partly sunny, with a high near 80. |
Forecast from NOAA-NWS for Johnstown CO.
