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Day 1 Outlook • April 20, 2026
Day 2 Outlook • April 21, 2026
Day 3 Outlook • April 22, 2026
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dBZ 5
75

Hazardous Weather Conditions

  • No active alerts for NEWCASTLE, WYOMING

Current Conditions: NEWCASTLE, WYOMING

NEWCASTLE MONDEL (KECS)

Clear

62.6 F
Humidity:12%
Wind Speed:SE 5.8 mph
Barometer: in
Dewpoint:8.6 F
Visibility:10.00 mi
Precip:--
Heat Index:NA
Wind Chill:NA
Apr 19 2026, 06:55 PM MDT
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5 Day Forecast for NEWCASTLE, WYOMING (82701)

Sunday

High 64 °F
Mostly Sunny
Sunday
Night
Low 37 °F
Mostly Clear
Monday

High 75 °F
Partly Sunny
Monday
Night
Low 46 °F
Mostly Clear
Tuesday

High 82 °F
Partly Sunny
Tuesday
Night
Low 53 °F
Mostly Cloudy
Wednesday

High 80 °F
Isolated T-storm
Wednesday
Night
Low 39 °F
Chance of Rain
Thursday

High 51 °F
Rain/Snow Mix Likely

Detailed Forecast for NEWCASTLE, WYOMING (82701)

Sunday
Mostly Sunny. High near 64°F. Wind around 7 mph, with gusts as high as 16 mph.
Sunday Night
Mostly Clear. Low around 37°F. Wind 3 to 8 mph, with gusts as high as 14 mph.
Monday
Partly Sunny. High near 75°F. Wind 2 to 8 mph, with gusts as high as 16 mph.
Monday Night
Mostly Clear. Low around 46°F. Wind 3 to 6 mph, with gusts as high as 12 mph.
Tuesday
Partly Sunny. High near 82°F. Wind 3 to 6 mph, with gusts as high as 14 mph.
Tuesday Night
Mostly Cloudy. Low around 53°F. Wind 6 to 8 mph, with gusts as high as 12 mph.
Wednesday
Isolated T-storm. High near 80°F. Wind 13 to 16 mph, with gusts as high as 24 mph.
Wednesday Night
Chance of Rain. Low around 39°F. Wind 14 to 16 mph, with gusts as high as 24 mph.
Thursday
Rain/Snow Mix Likely. High near 51°F. Wind 30 to 32 mph, with gusts as high as 43 mph.
Thursday Night
Chance of Snow. Low around 26°F. Wind 16 to 24 mph, with gusts as high as 32 mph.
Friday
Slight Chance of Snow. High near 48°F. Wind 17 to 18 mph, with gusts as high as 26 mph.
Friday Night
Slight Chance of Snow. Low around 26°F. Wind 7 to 9 mph, with gusts as high as 16 mph.
Saturday
Slight Chance of Snow. High near 50°F. Wind 10 to 12 mph, with gusts as high as 21 mph.
WY Radar
Current Radar • WY
Day 1 Outlook • April 20, 2026

Observation History for NEWCASTLE, WYOMING

Time Wind
(mph)		 Vis
(mi)		 Weather Precip (in) Temperature (F) Relative
Humidity		 Wind
Chill
(F)		 Heat
Index
(F)		 Pressure
Air Dwpt altimeter
(in)		 sea level
(mb)
06:55 PM MDT SE 5.8 10.00 Clear -- 62.6 8.6 12% NA NA M
06:35 PM MDT SE 5.8 10.00 Clear -- 64.4 8.6 11% NA NA M
06:15 PM MDT 6.9 10.00 NULL -- 64.4 8.6 11% NA NA M
05:55 PM MDT 6.9 10.00 Clear -- 64.4 8.6 11% NA NA M
05:35 PM MDT 4.7 10.00 Clear -- 64.4 8.6 11% NA NA M
05:15 PM MDT SE 5.8 10.00 Clear -- 64.4 8.6 11% NA NA M
04:55 PM MDT SE 8.1 10.00 Clear -- 64.4 8.6 11% NA NA M
04:35 PM MDT 0.0 10.00 Clear -- 64.4 8.6 11% NA NA M
04:15 PM MDT S 5.8 NULL NULL -- 64.4 8.6 11% NA NA M
03:55 PM MDT S 6.9 10.00 Clear -- 64.4 8.6 11% NA NA M
03:35 PM MDT 9.2 G 17.2 10.00 Clear -- 64.4 8.6 11% NA NA M
03:15 PM MDT 10.3 10.00 Clear -- 64.4 8.6 11% NA NA M
02:55 PM MDT 10.3 10.00 Clear -- 62.6 8.6 12% NA NA M
02:35 PM MDT 0.0 10.00 Clear -- 60.8 8.6 12% NA NA M
02:15 PM MDT S 6.9 10.00 Clear -- 60.8 10.4 13% NA NA M
01:55 PM MDT S 5.8 10.00 Clear -- 60.8 10.4 13% NA NA M
01:35 PM MDT 6.9 10.00 Clear -- 60.8 10.4 13% NA NA M
01:15 PM MDT 5.8 10.00 Clear -- 60.8 10.4 13% NA NA M
12:55 PM MDT 0.0 10.00 Clear -- 59.0 10.4 14% NA NA M
12:35 PM MDT S 9.2 10.00 Clear -- 59.0 12.2 16% NA NA M
12:15 PM MDT 6.9 10.00 Clear -- 57.2 12.2 17% NA NA M
11:55 AM MDT 8.1 10.00 Clear -- 57.2 14.0 18% NA NA M
11:35 AM MDT S 8.1 10.00 Clear -- 55.4 14.0 19% NA NA M
11:15 AM MDT S 8.1 10.00 Clear -- 53.6 14.0 20% NA NA M

Regional Weather Observation

NEWCASTLE MONDEL (KECS)

Clear
62.6 F

INYAN KARA (KIKA)

NULL
66.2 F

HULETT MUNI (KW43)

Clear
59.0 F

SPEARFISH/CLYDE (KSPF)

Clear
57.2 F

CUSTER (KCUT)

Clear
55.4 F

BELLE FOURCHE (KBFU)

NULL
64.4 F
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