Grand County, CO Weather Forecast
County weather hub
Clear
Compare major city weather across Grand County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Clear. Low around 35, with temperatures rising to around 37 overnight. South southwest wind around 5 mph.
County Weather Overview
This county weather page brings together forecast coverage for Grand County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 0 of 0 mapped cities in Grand County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- May 12 to May 18, 2026
- Latest sync
- May 12, 2026 5:09 AM MDT
- Forecast office
- BOU
- Source
- NOAA / NWS
Daily Outlook
This Week in Grand County
Wednesday looks like the warmest upcoming period in Grand County at 77 degrees F.
Sunday Night is the coolest period ahead with temperatures near 31 degrees F.
The strongest winds are forecast for Thursday at about 7 to 29 mph W.
Precipitation is mentioned in 3 upcoming forecast periods.
Forecast Details
- Last updated
- May 12, 2026 5:09 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
Sunny, with a high near 72. Southwest wind 2 to 17 mph, with gusts as high as 28 mph.
Mostly clear. Low around 36, with temperatures rising to around 38 overnight. Southeast wind 5 to 13 mph, with gusts as high as 21 mph.
Sunny, with a high near 77. South wind 1 to 18 mph, with gusts as high as 28 mph.
Partly cloudy, with a low around 41. Southwest wind 6 to 20 mph, with gusts as high as 28 mph.
Sunny, with a high near 68.
Mostly clear, with a low around 32.
Sunny, with a high near 73.
Mostly clear, with a low around 35.
Sunny, with a high near 74.
Partly cloudy, with a low around 36.
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 67.
A slight chance of showers and thunderstorms before midnight, then a slight chance of rain and snow showers. Partly cloudy, with a low around 31.
A slight chance of snow showers before 9am, then a slight chance of rain and snow showers between 9am and noon, then a chance of showers and thunderstorms. Mostly sunny, with a high near 63.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
May 12
|
Clear
|
35°F |
5 mph
SSW
|
|
Tuesday
May 12
|
Sunny
|
72°F |
2 to 17 mph
SW
|
|
Tuesday Night
May 12
|
Mostly Clear
|
36°F |
5 to 13 mph
SE
|
|
Wednesday
May 13
|
Sunny
|
77°F |
1 to 18 mph
S
|
|
Wednesday Night
May 13
|
Partly Cloudy
|
41°F |
6 to 20 mph
SW
|
|
Thursday
May 14
|
Sunny
|
68°F |
7 to 29 mph
W
|
|
Thursday Night
May 14
|
Mostly Clear
|
32°F |
2 to 28 mph
WSW
|
|
Friday
May 15
|
Sunny
|
73°F |
2 to 20 mph
WSW
|
|
Friday Night
May 15
|
Mostly Clear
|
35°F |
3 to 18 mph
N
|
|
Saturday
May 16
|
Sunny
|
74°F |
1 to 26 mph
SSW
|
|
Saturday Night
May 16
|
Partly Cloudy
|
36°F |
1 to 25 mph
SW
|
|
Sunday
May 17
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
67°F |
2 to 25 mph
SW
|
|
Sunday Night
May 17
|
Slight Chance Showers And Thunderstorms then Slight Chance Rain And Snow Showers
|
31°F |
5 to 22 mph
N
|
|
Monday
May 18
|
Slight Chance Snow Showers then Chance Showers And Thunderstorms
|
63°F |
5 to 18 mph
WNW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Grand County.
Nearby forecast pages are not available for this location yet.
Coverage
Forecast coverage currently spans 0 of 0 mapped cities in Grand County.
