Boulder County, CO Weather Forecast
County weather hub
Partly Cloudy
Compare major city weather across Boulder County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Partly cloudy. Low around 60, with temperatures rising to around 62 overnight. West northwest wind around 7 mph.
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
- Aug 25 to Aug 31, 2026
- Latest sync
- Aug 25, 2026 4:05 AM MDT
- Forecast office
- BOU
- Source
- NOAA / NWS
Daily Outlook
This Week in Boulder County
Friday looks like the warmest upcoming period in Boulder County at 82 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 56 degrees F.
The strongest winds are forecast for Overnight at about 7 mph WNW.
Precipitation is mentioned in 11 upcoming forecast periods.
Forecast Details
- Last updated
- Aug 25, 2026 4:05 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 chance of showers and thunderstorms after 1pm. Partly sunny. High near 78, with temperatures falling to around 69 in the afternoon. North northeast wind 2 to 6 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
A chance of showers and thunderstorms before 9pm. Partly cloudy. Low around 56, with temperatures rising to around 58 overnight. West northwest wind around 6 mph. Chance of precipitation is 30%.
A slight chance of showers and thunderstorms between noon and 2pm, then showers and thunderstorms likely. Mostly sunny, with a high near 75. Northeast wind 1 to 7 mph. Chance of precipitation is 60%.
A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 56. South southwest wind around 3 mph. Chance of precipitation is 40%.
A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 75. Chance of precipitation is 50%.
Partly cloudy, with a low around 59.
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 82.
Mostly cloudy, with a low around 63.
A slight chance of showers and thunderstorms after noon. Partly sunny, with a high near 82.
A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 62.
Showers and thunderstorms likely after noon. Partly sunny, with a high near 77.
A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 57.
Showers and thunderstorms likely after noon. Partly sunny, with a high near 75.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
Aug 25
|
Partly Cloudy
|
60°F |
7 mph
WNW
|
|
Tuesday
Aug 25
|
Partly Sunny then Chance Showers And Thunderstorms
|
78°F |
2 to 6 mph
NNE
|
|
Tuesday Night
Aug 25
|
Chance Showers And Thunderstorms then Partly Cloudy
|
56°F |
6 mph
WNW
|
|
Wednesday
Aug 26
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
75°F |
1 to 7 mph
NE
|
|
Wednesday Night
Aug 26
|
Chance Showers And Thunderstorms then Partly Cloudy
|
56°F |
3 mph
SSW
|
|
Thursday
Aug 27
|
Mostly Sunny then Chance Showers And Thunderstorms
|
75°F |
3 mph
NNE
|
|
Thursday Night
Aug 27
|
Partly Cloudy
|
59°F |
2 to 7 mph
SSW
|
|
Friday
Aug 28
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
82°F |
3 to 7 mph
W
|
|
Friday Night
Aug 28
|
Mostly Cloudy
|
63°F |
3 to 7 mph
WSW
|
|
Saturday
Aug 29
|
Partly Sunny then Slight Chance Showers And Thunderstorms
|
82°F |
7 mph
W
|
|
Saturday Night
Aug 29
|
Chance Showers And Thunderstorms then Mostly Cloudy
|
62°F |
3 to 7 mph
W
|
|
Sunday
Aug 30
|
Partly Sunny then Showers And Thunderstorms Likely
|
77°F |
2 to 6 mph
WSW
|
|
Sunday Night
Aug 30
|
Chance Showers And Thunderstorms then Mostly Cloudy
|
57°F |
3 mph
WSW
|
|
Monday
Aug 31
|
Partly Sunny then Showers And Thunderstorms Likely
|
75°F |
5 mph
SW
|
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.
