Wet and Cool in the East this Memorial Day Weekend; Well Above Normal Temperatures in the Northern Plains

A wet Memorial Day weekend is in store for the East, with widespread rainfall of 1 to more than 2 inches expected from the Gulf Coast to southern New England. Well above normal temperatures are forecast to build across the northern Plains. Another round of heavy to excessive rainfall is expected to impact the western Gulf Coast this weekend with Flood Watches in effect. Read More >

Current conditions at

Mondell Field (KECS)

Lat: 43.89°NLon: 104.32°WElev: 4173ft.

Partly Cloudy

50°F

10°C

Humidity	58%
Wind Speed	NW 20 G 26 mph
Barometer	29.97 in
Dewpoint	36°F (2°C)
Visibility	10.00 mi
Wind Chill	44°F (7°C)
Last update	22 May 9:35 am MDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Newcastle WY

Today
High: 60 °F
Mostly Sunny
and Breezy
Tonight
Low: 39 °F
Partly Cloudy
Saturday
High: 72 °F
Sunny
Saturday Night
Low: 45 °F
Mostly Clear
Sunday
High: 83 °F
Sunny
Sunday Night
Low: 51 °F
Mostly Clear
Memorial Day
High: 87 °F
Sunny
Monday Night
Low: 56 °F
Partly Cloudy
Tuesday
High: 84 °F
Mostly Sunny
then Slight
Chance
T-storms and
Breezy

Detailed Forecast

Today

Mostly sunny, with a high near 60. Breezy, with a northwest wind 15 to 20 mph, with gusts as high as 31 mph.

Tonight

Partly cloudy, with a low around 39. Northwest wind 8 to 13 mph becoming light and variable in the evening. Winds could gust as high as 22 mph.

Saturday

Sunny, with a high near 72. Calm wind becoming south around 5 mph. Winds could gust as high as 16 mph.

Saturday Night

Mostly clear, with a low around 45. Calm wind becoming east around 5 mph. Winds could gust as high as 15 mph.

Sunday

Sunny, with a high near 83. Calm wind becoming west around 6 mph in the afternoon.

Sunday Night

Mostly clear, with a low around 51. West wind around 5 mph becoming calm after midnight.

Memorial Day

Sunny, with a high near 87.

Monday Night

Partly cloudy, with a low around 56.

Tuesday

A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 84. Breezy.

Tuesday Night

A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 53. Breezy.

Wednesday

Showers likely and possibly a thunderstorm. Partly sunny, with a high near 76. Breezy.

Wednesday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 50.

Thursday

A chance of showers and thunderstorms. Partly sunny, with a high near 74.

Additional Forecasts and Information

Zone Area Forecast for Newcastle, WY

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ABOUT THIS FORECAST

Point Forecast:

Newcastle WY
43.86°N 104.21°W (Elev. 4380 ft)

8:36 am MDT May 22, 2026

Forecast Valid:

9am MDT May 22, 2026-6pm MDT May 28, 2026

Forecast Discussion

Additional Resources

Radar & Satellite Image

Link to Local Radar Data

Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation