Grant, CO Weather Forecast
Local 7-day forecast
Showers And Thunderstorms Likely
Track current conditions, temperature changes, wind, and the full daily outlook for Grant, CO in one place.
A slight chance of rain showers before noon, then showers and thunderstorms likely. Mostly cloudy. High near 61, with temperatures falling to around 55 in the afternoon. South southwest wind 7 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
Local Weather Overview
This forecast page for Grant, CO is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Sep 15, 2026 1:05 PM MDT.
The active forecast window currently covers Sep 15 to Sep 21, 2026 for Grant, CO.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 15 to Sep 21, 2026
- Latest sync
- Sep 15, 2026 1:05 PM MDT
- Forecast office
- BOU
- Source
- NOAA / NWS
Daily Outlook
This Week in Grant
Wednesday looks like the warmest upcoming period in Grant at 63 degrees F.
Saturday Night is the coolest period ahead with temperatures near 40 degrees F.
The strongest winds are forecast for Today at about 7 to 10 mph SSW.
Precipitation is mentioned in 14 upcoming forecast periods.
Forecast Details
- Last updated
- Sep 15, 2026 1:05 PM MDT
- Coverage
- 8 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. Mostly cloudy. Low around 47, with temperatures rising to around 49 overnight. Southwest wind 5 to 8 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
A slight chance of rain showers before noon, then showers and thunderstorms. Mostly cloudy. High near 63, with temperatures falling to around 56 in the afternoon. South southwest wind around 8 mph. Chance of precipitation is 80%.
Showers and thunderstorms likely. Mostly cloudy, with a low around 48. Northwest wind around 5 mph. Chance of precipitation is 70%.
A chance of rain showers before noon, then showers and thunderstorms. Mostly cloudy, with a high near 59. South wind around 5 mph. Chance of precipitation is 90%.
Showers and thunderstorms likely before midnight. Mostly cloudy, with a low around 46. Chance of precipitation is 60%.
Showers and thunderstorms likely after noon. Partly sunny, with a high near 62.
A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 42.
Showers and thunderstorms likely after noon. Partly sunny, with a high near 58.
A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 40.
A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 58.
A chance of showers and thunderstorms. Partly cloudy, with a low around 40.
A chance of showers and thunderstorms after noon. Partly sunny, with a high near 58.
A chance of rain showers before midnight. Partly cloudy, with a low around 41.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
Sep 15
|
Showers And Thunderstorms Likely
|
61°F |
7 to 10 mph
SSW
|
|
Tonight
Sep 15
|
Chance Showers And Thunderstorms
|
47°F |
5 to 8 mph
SW
|
|
Wednesday
Sep 16
|
Showers And Thunderstorms
|
63°F |
8 mph
SSW
|
|
Wednesday Night
Sep 16
|
Showers And Thunderstorms Likely
|
48°F |
5 mph
NW
|
|
Thursday
Sep 17
|
Showers And Thunderstorms
|
59°F |
5 mph
S
|
|
Thursday Night
Sep 17
|
Showers And Thunderstorms Likely then Mostly Cloudy
|
46°F |
3 to 9 mph
NW
|
|
Friday
Sep 18
|
Partly Sunny then Showers And Thunderstorms Likely
|
62°F |
9 mph
W
|
|
Friday Night
Sep 18
|
Slight Chance Showers And Thunderstorms then Partly Cloudy
|
42°F |
5 to 8 mph
WNW
|
|
Saturday
Sep 19
|
Partly Sunny then Showers And Thunderstorms Likely
|
58°F |
2 to 7 mph
W
|
|
Saturday Night
Sep 19
|
Chance Showers And Thunderstorms then Partly Cloudy
|
40°F |
6 mph
NNE
|
|
Sunday
Sep 20
|
Mostly Sunny then Chance Showers And Thunderstorms
|
58°F |
3 to 7 mph
SSW
|
|
Sunday Night
Sep 20
|
Chance Showers And Thunderstorms
|
40°F |
2 to 7 mph
NNW
|
|
Monday
Sep 21
|
Partly Sunny then Chance Showers And Thunderstorms
|
58°F |
2 to 6 mph
SSW
|
|
Monday Night
Sep 21
|
Chance Rain Showers then Partly Cloudy
|
41°F |
6 mph
WNW
|
Nearby Forecasts
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