New Castle, CO Weather Forecast
Local 7-day forecast
Chance Rain And Snow Showers then Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for New Castle, CO in one place.
A chance of rain and snow showers before noon, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 53.
Local Weather Overview
This forecast page for New Castle, 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: Apr 9, 2026 1:46 PM MDT.
The active forecast window currently covers Apr 14 to Apr 15, 2026 for New Castle, CO.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 14 to Apr 15, 2026
- Latest sync
- Apr 9, 2026 1:46 PM MDT
- Forecast office
- GJT
- Source
- NOAA / NWS
Daily Outlook
This Week in New Castle
Wednesday looks like the warmest upcoming period in New Castle at 61 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 29 degrees F.
The strongest winds are forecast for Wednesday at about 0 to 15 mph SW.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 9, 2026 1:46 PM MDT
- Coverage
- 3 days
- Time zone
- America/Denver
- Forecast office
- GJT
- Radar station
- KGJX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of rain showers. Mostly cloudy, with a low around 29.
Mostly sunny, with a high near 61.
Partly cloudy, with a low around 32.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Apr 14
|
Chance Rain And Snow Showers then Chance Showers And Thunderstorms
|
53°F |
0 to 10 mph
WSW
|
|
Tuesday Night
Apr 14
|
Chance Rain Showers
|
29°F |
0 to 10 mph
SSW
|
|
Wednesday
Apr 15
|
Mostly Sunny
|
61°F |
0 to 15 mph
SW
|
|
Wednesday Night
Apr 15
|
Partly Cloudy
|
32°F |
5 to 10 mph
S
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around New Castle.
