New Castle, CO Weather Forecast

Local 7-day forecast

100°

Mostly Sunny

Track current conditions, temperature changes, wind, and the full daily outlook for New Castle, CO in one place.

Tuesday, July 14, 2026

Wind: 5 mph W

This Afternoon

Mostly sunny, with a high near 100. West wind around 5 mph.

Local 7-day forecast

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: Jul 14, 2026 7:50 PM MDT.

The active forecast window currently covers Jul 14 to Jul 20, 2026 for New Castle, CO.

Page Snapshot

Page focus: city weather
Forecast window: Jul 14 to Jul 20, 2026
Latest sync: Jul 14, 2026 7:50 PM MDT
Forecast office: GJT
Source: NOAA / NWS

Next High

100°F

This Afternoon

Next Low

62°F

Tonight

Rain Outlook

Periods mentioning precipitation

Windiest

5 to 10 mph

Tonight

Daily Outlook

Today

Jul 14

Mostly Sunny

100 °F

/ 62°F

Wind 5 mph

Wed

Jul 15

Mostly Sunny then Slight Chance Showers And Thunderstorms

98 °F

/ 60°F

Wind 0 to 10 mph

Thu

Jul 16

Mostly Sunny then Chance Showers And Thunderstorms

95 °F

/ 59°F

Wind 0 to 5 mph

Fri

Jul 17

Sunny then Chance Showers And Thunderstorms

94 °F

/ 59°F

Wind 0 to 5 mph

Sat

Jul 18

Mostly Sunny then Slight Chance Showers And Thunderstorms

96 °F

/ 60°F

Wind 0 to 5 mph

Sun

Jul 19

Mostly Sunny then Chance Showers And Thunderstorms

94 °F

/ 60°F

Wind 0 to 5 mph

Mon

Jul 20

Partly Sunny then Showers And Thunderstorms Likely

93 °F

/ 59°F

Wind 0 to 5 mph

This Week in New Castle

This Afternoon looks like the warmest upcoming period in New Castle at 100 degrees F.

Thursday Night is the coolest period ahead with temperatures near 59 degrees F.

The strongest winds are forecast for Tonight at about 5 to 10 mph ESE.

Precipitation is mentioned in 12 upcoming forecast periods.

Forecast Details

Last updated: Jul 14, 2026 7:50 PM MDT
Coverage: 8 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 source

Extended Forecast

Tonight

Jul 14

62°F

Partly Cloudy

5 to 10 mph ESE

Partly cloudy, with a low around 62. East southeast wind 5 to 10 mph.

Wednesday

Jul 15

98°F

Mostly Sunny then Slight Chance Showers And Thunderstorms

0 to 10 mph NW

A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 98. Northwest wind 0 to 10 mph. Chance of precipitation is 20%.

Wednesday Night

Jul 15

60°F

Slight Chance Showers And Thunderstorms then Partly Cloudy

0 to 10 mph ESE

A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 60. East southeast wind 0 to 10 mph. Chance of precipitation is 20%.

Thursday

Jul 16

95°F

Mostly Sunny then Chance Showers And Thunderstorms

0 to 5 mph W

A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 95. West wind 0 to 5 mph. Chance of precipitation is 40%.

Thursday Night

Jul 16

59°F

Chance Showers And Thunderstorms then Partly Cloudy

0 to 10 mph ENE

A chance of showers and thunderstorms before 9pm, then a chance of showers and thunderstorms between 9pm and midnight. Partly cloudy, with a low around 59. Chance of precipitation is 40%.

Friday

Jul 17

94°F

Sunny then Chance Showers And Thunderstorms

0 to 5 mph SW

A chance of showers and thunderstorms after noon. Sunny, with a high near 94.

Friday Night

Jul 17

59°F

Chance Showers And Thunderstorms then Mostly Cloudy

0 to 5 mph ENE

A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 59.

Saturday

Jul 18

96°F

Mostly Sunny then Slight Chance Showers And Thunderstorms

0 to 5 mph SW

A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 96.

Saturday Night

Jul 18

60°F

Chance Showers And Thunderstorms then Mostly Cloudy

0 to 5 mph NE

A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 60.

Sunday

Jul 19

94°F

Mostly Sunny then Chance Showers And Thunderstorms

0 to 5 mph NW

A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 94.

Sunday Night

Jul 19

60°F

Showers And Thunderstorms Likely

0 to 5 mph ESE

Showers and thunderstorms likely. Mostly cloudy, with a low around 60.

Monday

Jul 20

93°F

Partly Sunny then Showers And Thunderstorms Likely

0 to 5 mph S

Showers and thunderstorms likely after noon. Partly sunny, with a high near 93.

Monday Night

Jul 20

59°F

Showers And Thunderstorms Likely

0 to 5 mph ESE

Showers and thunderstorms likely. Mostly cloudy, with a low around 59.

Detailed Forecast

Period	Conditions	Temp	Wind	Details
This Afternoon Jul 14	Mostly Sunny	100°F	5 mph W	Mostly sunny, with a high near 100. West wind around 5 mph.
Tonight Jul 14	Partly Cloudy	62°F	5 to 10 mph ESE	Partly cloudy, with a low around 62. East southeast wind 5 to 10 mph.
Wednesday Jul 15	Mostly Sunny then Slight Chance Showers And Thunderstorms	98°F	0 to 10 mph NW	A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 98. Northwest wind 0 to 10 mph....
Wednesday Night Jul 15	Slight Chance Showers And Thunderstorms then Partly Cloudy	60°F	0 to 10 mph ESE	A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 60. East southeast wind 0...
Thursday Jul 16	Mostly Sunny then Chance Showers And Thunderstorms	95°F	0 to 5 mph W	A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 95. West wind 0 to 5 mph. Chance of pre...
Thursday Night Jul 16	Chance Showers And Thunderstorms then Partly Cloudy	59°F	0 to 10 mph ENE	A chance of showers and thunderstorms before 9pm, then a chance of showers and thunderstorms between 9pm and midnight. P...
Friday Jul 17	Sunny then Chance Showers And Thunderstorms	94°F	0 to 5 mph SW	A chance of showers and thunderstorms after noon. Sunny, with a high near 94.
Friday Night Jul 17	Chance Showers And Thunderstorms then Mostly Cloudy	59°F	0 to 5 mph ENE	A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 59.
Saturday Jul 18	Mostly Sunny then Slight Chance Showers And Thunderstorms	96°F	0 to 5 mph SW	A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 96.
Saturday Night Jul 18	Chance Showers And Thunderstorms then Mostly Cloudy	60°F	0 to 5 mph NE	A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 60.
Sunday Jul 19	Mostly Sunny then Chance Showers And Thunderstorms	94°F	0 to 5 mph NW	A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 94.
Sunday Night Jul 19	Showers And Thunderstorms Likely	60°F	0 to 5 mph ESE	Showers and thunderstorms likely. Mostly cloudy, with a low around 60.
Monday Jul 20	Partly Sunny then Showers And Thunderstorms Likely	93°F	0 to 5 mph S	Showers and thunderstorms likely after noon. Partly sunny, with a high near 93.
Monday Night Jul 20	Showers And Thunderstorms Likely	59°F	0 to 5 mph ESE	Showers and thunderstorms likely. Mostly cloudy, with a low around 59.

Nearby Forecasts

Explore weather pages for nearby cities and major places around New Castle.

Region Links

Garfield County weather

County forecast page

Colorado weather

Statewide weather overview

United States weather

National weather entry point

New Castle Colorado image

Weather data provided by the National Weather Service (NOAA). Forecast pages update automatically as new periods are synced for each supported U.S. location.