Jefferson County, CO Weather Forecast
County weather hub
Sunny
Compare major city weather across Jefferson County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Sunny, with a high near 82.
County Weather Overview
This county weather page brings together forecast coverage for Jefferson County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 8 of 8 mapped cities in Jefferson County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Jul 14 to Jul 16, 2026
- Latest sync
- Jul 10, 2026 12:55 PM MDT
- Forecast office
- BOU
- Source
- NOAA / NWS
Daily Outlook
This Week in Jefferson County
Tuesday looks like the warmest upcoming period in Jefferson County at 82 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 56 degrees F.
The strongest winds are forecast for Tuesday at about 5 to 13 mph ESE.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 10, 2026 12:55 PM MDT
- Coverage
- 4 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
Mostly clear, with a low around 56.
Sunny, with a high near 82.
Mostly clear, with a low around 57.
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 81.
A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 57.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Jul 14
|
Sunny
|
82°F |
5 to 13 mph
ESE
|
|
Tuesday Night
Jul 14
|
Mostly Clear
|
56°F |
5 to 13 mph
S
|
|
Wednesday
Jul 15
|
Sunny
|
82°F |
5 to 13 mph
ESE
|
|
Wednesday Night
Jul 15
|
Mostly Clear
|
57°F |
5 to 12 mph
SSW
|
|
Thursday
Jul 16
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
81°F |
5 to 12 mph
NNE
|
|
Thursday Night
Jul 16
|
Slight Chance Showers And Thunderstorms then Partly Cloudy
|
57°F |
5 to 10 mph
SSW
|
Major City Forecasts
Live forecast snapshots for major cities across Jefferson County.
Coverage
Forecast coverage currently spans 8 of 8 mapped cities in Jefferson County.
Largest mapped city population in this region: 157,429.
