Newcastle, WY Weather Forecast
Local 7-day forecast
Partly Sunny then Chance Rain Showers
Track current conditions, temperature changes, wind, and the full daily outlook for Newcastle, WY in one place.
A chance of rain showers after noon. Partly sunny. High near 70, with temperatures falling to around 67 in the afternoon. West wind 7 to 16 mph, with gusts as high as 29 mph. Chance of precipitation is 40%.
Local Weather Overview
This forecast page for Newcastle, WY 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 15, 2026 12:16 AM MDT.
The active forecast window currently covers Apr 16 to Apr 21, 2026 for Newcastle, WY.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 16 to Apr 21, 2026
- Latest sync
- Apr 15, 2026 12:16 AM MDT
- Forecast office
- UNR
- Source
- NOAA / NWS
Daily Outlook
This Week in Newcastle
Tuesday looks like the warmest upcoming period in Newcastle at 76 degrees F.
Friday Night is the coolest period ahead with temperatures near 19 degrees F.
The strongest winds are forecast for Friday at about 15 to 23 mph NW.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 15, 2026 12:16 AM MDT
- Coverage
- 6 days
- Time zone
- America/Denver
- Forecast office
- UNR
- Radar station
- KUDX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Rain showers before midnight, then rain and snow showers likely. Mostly cloudy. Low around 26, with temperatures rising to around 28 overnight. Northwest wind 15 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 80%. New snow accumulation of less than half an inch possible.
Snow showers likely. Mostly cloudy, with a high near 38. Northwest wind 15 to 23 mph, with gusts as high as 35 mph. Chance of precipitation is 70%. New snow accumulation of less than half an inch possible.
Partly cloudy, with a low around 19. Northwest wind 10 to 22 mph, with gusts as high as 32 mph.
A slight chance of snow showers after noon. Mostly sunny, with a high near 46. Northwest wind 10 to 20 mph, with gusts as high as 31 mph.
Mostly clear, with a low around 24.
Sunny, with a high near 65.
Mostly clear, with a low around 34.
Sunny, with a high near 75.
Partly cloudy, with a low around 44.
Sunny, with a high near 76.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Thursday
Apr 16
|
Partly Sunny then Chance Rain Showers
|
70°F |
7 to 16 mph
W
|
|
Thursday Night
Apr 16
|
Rain Showers then Rain And Snow Showers Likely
|
26°F |
15 to 18 mph
NW
|
|
Friday
Apr 17
|
Snow Showers Likely
|
38°F |
15 to 23 mph
NW
|
|
Friday Night
Apr 17
|
Partly Cloudy
|
19°F |
10 to 22 mph
NW
|
|
Saturday
Apr 18
|
Mostly Sunny then Slight Chance Snow Showers
|
46°F |
10 to 20 mph
NW
|
|
Saturday Night
Apr 18
|
Mostly Clear
|
24°F |
3 to 14 mph
NE
|
|
Sunday
Apr 19
|
Sunny
|
65°F |
3 to 10 mph
S
|
|
Sunday Night
Apr 19
|
Mostly Clear
|
34°F |
3 to 10 mph
SE
|
|
Monday
Apr 20
|
Sunny
|
75°F |
3 to 15 mph
S
|
|
Monday Night
Apr 20
|
Partly Cloudy
|
44°F |
5 to 14 mph
S
|
|
Tuesday
Apr 21
|
Sunny
|
76°F |
5 to 15 mph
S
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Newcastle.
