Newcastle, WA Weather Forecast
Local 7-day forecast
Mostly Clear
Track current conditions, temperature changes, wind, and the full daily outlook for Newcastle, WA in one place.
Mostly clear, with a low around 48. Northeast wind around 3 mph.
Local Weather Overview
This forecast page for Newcastle, WA 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: Oct 15, 2026 7:29 AM PDT.
The active forecast window currently covers Oct 15 to Oct 21, 2026 for Newcastle, WA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 15 to Oct 21, 2026
- Latest sync
- Oct 15, 2026 7:29 AM PDT
- Forecast office
- SEW
- Source
- NOAA / NWS
Daily Outlook
This Week in Newcastle
Friday looks like the warmest upcoming period in Newcastle at 74 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 42 degrees F.
The strongest winds are forecast for Friday Night at about 2 to 13 mph SSW.
Precipitation is mentioned in 3 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 15, 2026 7:29 AM PDT
- Coverage
- 7 days
- Time zone
- America/Los_Angeles
- Forecast office
- SEW
- Radar station
- KATX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Sunny. High near 72, with temperatures falling to around 70 in the afternoon. East wind around 3 mph.
Mostly clear, with a low around 53. East southeast wind around 6 mph.
Mostly sunny, with a high near 74. South southeast wind around 3 mph.
Rain likely after 11pm. Mostly cloudy, with a low around 54. South southwest wind 2 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
Rain likely before 5pm. Partly sunny, with a high near 62. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
Partly cloudy, with a low around 43.
Partly sunny, with a high near 58.
Mostly cloudy, with a low around 45.
Mostly cloudy, with a high near 57.
Mostly cloudy, with a low around 44.
Mostly sunny, with a high near 59.
Partly cloudy, with a low around 42.
A slight chance of rain after 5pm. Mostly sunny, with a high near 60.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
Oct 15
|
Mostly Clear
|
48°F |
3 mph
NE
|
|
Thursday
Oct 15
|
Sunny
|
72°F |
3 mph
E
|
|
Thursday Night
Oct 15
|
Mostly Clear
|
53°F |
6 mph
ESE
|
|
Friday
Oct 16
|
Mostly Sunny
|
74°F |
3 mph
SSE
|
|
Friday Night
Oct 16
|
Light Rain Likely
|
54°F |
2 to 13 mph
SSW
|
|
Saturday
Oct 17
|
Light Rain Likely
|
62°F |
3 to 13 mph
SW
|
|
Saturday Night
Oct 17
|
Partly Cloudy
|
43°F |
5 mph
NE
|
|
Sunday
Oct 18
|
Partly Sunny
|
58°F |
5 mph
NNE
|
|
Sunday Night
Oct 18
|
Mostly Cloudy
|
45°F |
3 mph
NE
|
|
Monday
Oct 19
|
Mostly Cloudy
|
57°F |
2 mph
S
|
|
Monday Night
Oct 19
|
Mostly Cloudy
|
44°F |
2 mph
ESE
|
|
Tuesday
Oct 20
|
Mostly Sunny
|
59°F |
5 mph
NNE
|
|
Tuesday Night
Oct 20
|
Partly Cloudy
|
42°F |
5 mph
NE
|
|
Wednesday
Oct 21
|
Mostly Sunny then Slight Chance Light Rain
|
60°F |
2 mph
N
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Newcastle.
