Jefferson County, CO Weather Forecast
County weather hub
Light Snow Likely
Compare major city weather across Jefferson County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Snow likely. Mostly cloudy, with a high near 38. North northeast wind 2 to 16 mph, with gusts as high as 29 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
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
- Oct 15 to Oct 20, 2026
- Latest sync
- Oct 14, 2026 6:31 AM MDT
- Forecast office
- BOU
- Source
- NOAA / NWS
Daily Outlook
This Week in Jefferson County
Saturday looks like the warmest upcoming period in Jefferson County at 64 degrees F.
Thursday Night is the coolest period ahead with temperatures near 23 degrees F.
The strongest winds are forecast for Thursday at about 2 to 16 mph NNE.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 14, 2026 6:31 AM MDT
- Coverage
- 6 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 snow before 10pm, then a slight chance of snow showers between 10pm and midnight. Mostly clear, with a low around 23. Northwest wind 1 to 6 mph, with gusts as high as 16 mph. Chance of precipitation is 20%. Little or no snow accumulation expected.
Sunny, with a high near 49.
Mostly clear, with a low around 28.
Sunny, with a high near 64.
Partly cloudy, with a low around 38.
Mostly sunny, with a high near 59.
Partly cloudy, with a low around 35.
Sunny, with a high near 61.
Mostly clear, with a low around 38.
Sunny, with a high near 62.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Thursday
Oct 15
|
Light Snow Likely
|
38°F |
2 to 16 mph
NNE
|
|
Thursday Night
Oct 15
|
Slight Chance Light Snow then Mostly Clear
|
23°F |
1 to 6 mph
NW
|
|
Friday
Oct 16
|
Sunny
|
49°F |
3 mph
S
|
|
Friday Night
Oct 16
|
Mostly Clear
|
28°F |
0 to 6 mph
NW
|
|
Saturday
Oct 17
|
Sunny
|
64°F |
0 to 12 mph
S
|
|
Saturday Night
Oct 17
|
Partly Cloudy
|
38°F |
0 to 7 mph
NW
|
|
Sunday
Oct 18
|
Mostly Sunny
|
59°F |
2 to 9 mph
N
|
|
Sunday Night
Oct 18
|
Partly Cloudy
|
35°F |
3 mph
WNW
|
|
Monday
Oct 19
|
Sunny
|
61°F |
3 mph
SE
|
|
Monday Night
Oct 19
|
Mostly Clear
|
38°F |
1 to 6 mph
NW
|
|
Tuesday
Oct 20
|
Sunny
|
62°F |
2 to 7 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.
