Larimer County, CO Weather Forecast
County weather hub
Chance Showers And Thunderstorms
Compare major city weather across Larimer County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
A chance of showers and thunderstorms. Mostly cloudy. High near 80, with temperatures falling to around 70 in the afternoon. West northwest wind around 6 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
County Weather Overview
This county weather page brings together forecast coverage for Larimer 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 Larimer County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Aug 24 to Aug 30, 2026
- Latest sync
- Aug 24, 2026 6:45 PM MDT
- Forecast office
- BOU
- Source
- NOAA / NWS
Daily Outlook
This Week in Larimer County
Friday looks like the warmest upcoming period in Larimer County at 81 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 54 degrees F.
The strongest winds are forecast for Saturday at about 7 to 10 mph WSW.
Precipitation is mentioned in 13 upcoming forecast periods.
Forecast Details
- Last updated
- Aug 24, 2026 6:45 PM MDT
- Coverage
- 8 days
- Time zone
- America/Denver
- Forecast office
- BOU
- Radar station
- KCYS
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 midnight. Mostly cloudy. Low around 59, with temperatures rising to around 61 overnight. West southwest wind around 7 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
A chance of showers and thunderstorms between noon and 2pm, then showers and thunderstorms likely. Mostly sunny. High near 76, with temperatures falling to around 68 in the afternoon. North northwest wind 3 to 7 mph. Chance of precipitation is 60%.
A slight chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 54. South southwest wind around 5 mph. Chance of precipitation is 20%.
Showers and thunderstorms likely between noon and 3pm, then showers and thunderstorms likely. Partly sunny, with a high near 74. Northeast wind 1 to 5 mph. Chance of precipitation is 70%.
A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 54. Chance of precipitation is 40%.
A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 77.
A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 57.
A chance of showers and thunderstorms after noon. Partly sunny, with a high near 81.
Mostly cloudy, with a low around 60.
A chance of showers and thunderstorms after noon. Partly sunny, with a high near 80.
A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 58.
A chance of showers and thunderstorms after noon. Partly sunny, with a high near 77.
A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 54.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
This Afternoon
Aug 24
|
Chance Showers And Thunderstorms
|
80°F |
6 mph
WNW
|
|
Tonight
Aug 24
|
Slight Chance Showers And Thunderstorms then Mostly Cloudy
|
59°F |
7 mph
WSW
|
|
Tuesday
Aug 25
|
Mostly Sunny then Chance Showers And Thunderstorms
|
76°F |
3 to 7 mph
NNW
|
|
Tuesday Night
Aug 25
|
Slight Chance Showers And Thunderstorms then Partly Cloudy
|
54°F |
5 mph
SSW
|
|
Wednesday
Aug 26
|
Partly Sunny then Showers And Thunderstorms Likely
|
74°F |
1 to 5 mph
NE
|
|
Wednesday Night
Aug 26
|
Chance Showers And Thunderstorms then Partly Cloudy
|
54°F |
3 mph
SSW
|
|
Thursday
Aug 27
|
Mostly Sunny then Chance Showers And Thunderstorms
|
77°F |
2 to 6 mph
E
|
|
Thursday Night
Aug 27
|
Slight Chance Showers And Thunderstorms then Partly Cloudy
|
57°F |
3 to 7 mph
SSW
|
|
Friday
Aug 28
|
Partly Sunny then Chance Showers And Thunderstorms
|
81°F |
3 to 7 mph
W
|
|
Friday Night
Aug 28
|
Mostly Cloudy
|
60°F |
3 to 8 mph
SW
|
|
Saturday
Aug 29
|
Partly Sunny then Chance Showers And Thunderstorms
|
80°F |
7 to 10 mph
WSW
|
|
Saturday Night
Aug 29
|
Chance Showers And Thunderstorms then Mostly Cloudy
|
58°F |
9 mph
WSW
|
|
Sunday
Aug 30
|
Partly Sunny then Chance Showers And Thunderstorms
|
77°F |
6 to 10 mph
W
|
|
Sunday Night
Aug 30
|
Chance Showers And Thunderstorms then Mostly Cloudy
|
54°F |
6 mph
W
|
Major City Forecasts
Live forecast snapshots for major cities across Larimer County.
Coverage
Forecast coverage currently spans 4 of 4 mapped cities in Larimer County.
Largest mapped city population in this region: 168,234.
