Boulder County, CO Weather Forecast
County weather hub
Sunny then Chance Showers And Thunderstorms
Compare major city weather across Boulder County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
A chance of showers and thunderstorms after 1pm. Sunny. High near 76, with temperatures falling to around 71 in the afternoon. East northeast wind 0 to 5 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
County Weather Overview
This county weather page brings together forecast coverage for Boulder County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 4 of 4 mapped cities in Boulder County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Jul 10 to Jul 16, 2026
- Latest sync
- Jul 9, 2026 10:36 PM MDT
- Forecast office
- BOU
- Source
- NOAA / NWS
Daily Outlook
This Week in Boulder County
Monday looks like the warmest upcoming period in Boulder County at 86 degrees F.
Friday Night is the coolest period ahead with temperatures near 58 degrees F.
The strongest winds are forecast for Tuesday at about 1 to 10 mph ENE.
Precipitation is mentioned in 3 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 9, 2026 10:36 PM 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 before 8pm. Mostly clear. Low around 58, with temperatures rising to around 60 overnight. West wind around 3 mph. Chance of precipitation is 20%.
Sunny, with a high near 83. North northeast wind 0 to 5 mph.
Mostly clear, with a low around 62. South southwest wind around 3 mph.
Sunny, with a high near 84.
Mostly clear, with a low around 62.
Sunny, with a high near 86.
Mostly clear, with a low around 63.
Sunny, with a high near 85.
Mostly clear, with a low around 63.
Sunny, with a high near 84.
Partly cloudy, with a low around 64.
A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 83.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Jul 10
|
Sunny then Chance Showers And Thunderstorms
|
76°F |
0 to 5 mph
ENE
|
|
Friday Night
Jul 10
|
Slight Chance Showers And Thunderstorms then Mostly Clear
|
58°F |
3 mph
W
|
|
Saturday
Jul 11
|
Sunny
|
83°F |
0 to 5 mph
NNE
|
|
Saturday Night
Jul 11
|
Mostly Clear
|
62°F |
3 mph
SSW
|
|
Sunday
Jul 12
|
Sunny
|
84°F |
2 to 9 mph
NE
|
|
Sunday Night
Jul 12
|
Mostly Clear
|
62°F |
1 to 9 mph
S
|
|
Monday
Jul 13
|
Sunny
|
86°F |
1 to 8 mph
SSE
|
|
Monday Night
Jul 13
|
Mostly Clear
|
63°F |
1 to 8 mph
SSE
|
|
Tuesday
Jul 14
|
Sunny
|
85°F |
1 to 10 mph
ENE
|
|
Tuesday Night
Jul 14
|
Mostly Clear
|
63°F |
1 to 10 mph
S
|
|
Wednesday
Jul 15
|
Sunny
|
84°F |
1 to 9 mph
ENE
|
|
Wednesday Night
Jul 15
|
Partly Cloudy
|
64°F |
1 to 7 mph
S
|
|
Thursday
Jul 16
|
Mostly Sunny then Chance Showers And Thunderstorms
|
83°F |
1 to 8 mph
NNE
|
Major City Forecasts
Live forecast snapshots for major cities across Boulder County.
Coverage
Forecast coverage currently spans 4 of 4 mapped cities in Boulder County.
Largest mapped city population in this region: 107,645.
