Johnstown, CO Weather Forecast
Local 7-day forecast
Partly Cloudy
Track current conditions, temperature changes, wind, and the full daily outlook for Johnstown, CO in one place.
Partly cloudy, with a low around 58. Northwest wind around 5 mph.
Local Weather Overview
This forecast page for Johnstown, CO is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Jul 10, 2026 3:59 AM MDT.
The active forecast window currently covers Jul 10 to Jul 16, 2026 for Johnstown, CO.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 10 to Jul 16, 2026
- Latest sync
- Jul 10, 2026 3:59 AM MDT
- Forecast office
- BOU
- Source
- NOAA / NWS
Daily Outlook
This Week in Johnstown
Monday looks like the warmest upcoming period in Johnstown at 99 degrees F.
Overnight is the coolest period ahead with temperatures near 58 degrees F.
The strongest winds are forecast for Monday Night at about 6 to 22 mph ESE.
Precipitation is mentioned in 1 upcoming forecast period.
Forecast Details
- Last updated
- Jul 10, 2026 3:59 AM MDT
- Coverage
- 7 days
- Time zone
- America/Denver
- Forecast office
- BOU
- Radar station
- KFTG
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A slight chance of showers and thunderstorms after 3pm. Mostly sunny. High near 89, with temperatures falling to around 85 in the afternoon. Northeast wind 2 to 9 mph. Chance of precipitation is 20%.
Partly cloudy. Low around 58, with temperatures rising to around 60 overnight. Southeast wind 2 to 9 mph.
Sunny, with a high near 95. East northeast wind 3 to 8 mph.
Mostly clear, with a low around 62. East wind 3 to 13 mph, with gusts as high as 24 mph.
Sunny, with a high near 96.
Mostly clear, with a low around 64.
Sunny, with a high near 99.
Mostly clear, with a low around 64.
Sunny, with a high near 97.
Mostly clear, with a low around 64.
Sunny, with a high near 96.
Mostly clear, with a low around 64.
Sunny, with a high near 96.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
Jul 10
|
Partly Cloudy
|
58°F |
5 mph
NW
|
|
Friday
Jul 10
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
89°F |
2 to 9 mph
NE
|
|
Friday Night
Jul 10
|
Partly Cloudy
|
58°F |
2 to 9 mph
SE
|
|
Saturday
Jul 11
|
Sunny
|
95°F |
3 to 8 mph
ENE
|
|
Saturday Night
Jul 11
|
Mostly Clear
|
62°F |
3 to 13 mph
E
|
|
Sunday
Jul 12
|
Sunny
|
96°F |
3 to 16 mph
NE
|
|
Sunday Night
Jul 12
|
Mostly Clear
|
64°F |
6 to 20 mph
SSE
|
|
Monday
Jul 13
|
Sunny
|
99°F |
2 to 20 mph
ESE
|
|
Monday Night
Jul 13
|
Mostly Clear
|
64°F |
6 to 22 mph
ESE
|
|
Tuesday
Jul 14
|
Sunny
|
97°F |
5 to 18 mph
ENE
|
|
Tuesday Night
Jul 14
|
Mostly Clear
|
64°F |
6 to 22 mph
ESE
|
|
Wednesday
Jul 15
|
Sunny
|
96°F |
6 to 18 mph
ENE
|
|
Wednesday Night
Jul 15
|
Mostly Clear
|
64°F |
8 to 21 mph
ESE
|
|
Thursday
Jul 16
|
Sunny
|
96°F |
6 to 16 mph
NE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Johnstown.
