Current forecastStart with the hourly forecastCheck when rain, wind, and temperature changes overlap your plans.
Open→Weather guidance for your areaPlan with the complete forecast
Safety guides Use current official weather information for Hamilton, Colorado 81638 before making weather-sensitive plans.
Live weatherCheck live radar before leavingUse radar with the forecast to see how precipitation is moving.
Open→Safety guideReview official safety guidancePrepare for storms, flooding, heat, cold, and other hazards.
Open→Healthy weatherInclude air quality in outdoor plansUse official EPA information when planning time outside.
Open→Weather status
No active NWS alerts found for Hamilton, Colorado 81638
Conditions can change quickly. Keep Wireless Emergency Alerts enabled and continue to monitor official information.
Official NOAA / NWSWSR-88D DopplerUpdates every 5 minutes
Live Doppler radar
Animated Multi-Radar/Multi-Sensor reflectivity from the National Weather Service’s network of Doppler radars. Search a U.S. city, ZIP code, or street address to center the map on local weather, then zoom to neighborhood street detail.
Live radar is ready when you need it.
The interactive map stays off until opened to keep forecasts fast.
After loading, MyUSA.us shows the exact Doppler frame time, refresh controls, and an official NWS fallback if the map is unavailable.Doppler radar and warnings: NOAA/National Weather Service · Map: OpenFreeMap, OpenMapTiles and OpenStreetMap contributors. Radar can be delayed briefly during service updates.
MyUSA.us is not affiliated with or endorsed by NOAA or the National Weather Service. For life-threatening weather, follow official NWS alerts and local authorities.
What’s next
Hourly forecast
Check the latest hourly conditions, seven-day outlook, rain timing, wind, sunrise and sunset for Hamilton, Colorado 81638. Forecasts and alerts update from NOAA and the National Weather Service.
80°Chance Showers And Thunderstorms32% rain80°Chance Showers And Thunderstorms35% rain72°Chance Showers And Thunderstorms29% rain69°Chance Showers And Thunderstorms26% rain67°Slight Chance Showers And Thunderstorms21% rain66°Slight Chance Showers And Thunderstorms23% rain
65°Slight Chance Rain Showers22% rain63°Slight Chance Rain Showers16% rainNext 24 hours
Rain Timeline
Scattered precipitation is possible. The highest official hourly chance is 35%; check the radar before heading out.
32%Thunderstorms
35%Thunderstorms
29%Thunderstorms
26%Thunderstorms
21%Thunderstorms
23%Thunderstorms
22%Rain
16%Rain
13%None
13%None
13%None
12%None
10%None
10%None
10%None
6%None
6%None
6%None
15%Thunderstorms
15%Thunderstorms
15%Thunderstorms
24%Thunderstorms
24%Thunderstorms
24%Thunderstorms
Official NWS outlook
7-Day Forecast
Today
80°58°
Chance Showers And Thunderstorms
- Precipitation
- 35%
- Wind
- SSE 5 to 10 mph
- Sunrise
- 6:30 AM
- Sunset
- 7:58 PM
Mon
84°56°
Mostly Sunny then Slight Chance Showers And Thunderstorms
- Precipitation
- 27%
- Wind
- SW 0 to 10 mph
- Sunrise
- 6:31 AM
- Sunset
- 7:56 PM
Tue
83°57°
Mostly Sunny then Slight Chance Showers And Thunderstorms
- Precipitation
- 14%
- Wind
- SW 0 to 10 mph
- Sunrise
- 6:32 AM
- Sunset
- 7:55 PM
Wed
84°56°
Mostly Sunny then Slight Chance Showers And Thunderstorms
- Precipitation
- 21%
- Wind
- S 0 to 10 mph
- Sunrise
- 6:33 AM
- Sunset
- 7:53 PM
Thu
84°58°
Mostly Sunny then Slight Chance Showers And Thunderstorms
- Precipitation
- 19%
- Wind
- WSW 0 to 10 mph
- Sunrise
- 6:34 AM
- Sunset
- 7:52 PM
Fri
85°58°
Mostly Sunny
- Precipitation
- 17%
- Wind
- SSW 5 to 15 mph
- Sunrise
- 6:35 AM
- Sunset
- 7:50 PM
Sat
84°58°
Mostly Sunny then Slight Chance Showers And Thunderstorms
- Precipitation
- 26%
- Wind
- SSW 5 to 20 mph
- Sunrise
- 6:36 AM
- Sunset
- 7:49 PM
Forecasts, icons, precipitation, wind, and alerts are from the National Weather Service. Sunrise and sunset are calculated locally for the selected coordinates.
Weather for a healthier day
Healthy Weather
Real Feel79°F
Good conditions for walking
Conditions look reasonable, but stay alert for quick weather changes.
WindNNW10 mph
Best walk timeBetter weather window: 2 AM–4 AM
Walking: 13% average rain chance, near 63°F, with winds near 5 mph.
Official EPA AirNowLocal air qualityHamilton, Colorado 81638View AQI +
More weather details
Wind gusts28mph
Rain now32%next hour
Humidity28%current
UV indexCheckingEPA forecast
Wind impact: Breezy — cycling, umbrellas, and loose outdoor items may be affected.
“Better weather window” is planning guidance based on official NWS data—not a promise of safe conditions. Review active alerts and radar before leaving.
Storm & DetailsGusts, pressure, visibility and official risk outlooksView details +
Wind gust28 mph
Pressure30.27 in
Visibility10.0 mi
Peak rain chance35%
Dew point43°F
Active alertsNone
Official risk outlooks
These national tools add expert storm, heavy-rain and flooding context to your local forecast.
Loading nearby traffic cameras…
Official tropical weather
Hurricane center
NOAA National Hurricane Center updates, outlooks, and storm resources in one place.
NOAA / NHC Atlantic
Hurricane center
Official Atlantic, Caribbean, and Gulf updatesSimple, useful help
Weather safety guides
Quick answers for heat, storms, flooding and hurricane preparation—kept separate so your main weather page stays clean.