Observed 5:55 AM MDT at KECS

Newcastle, WY weather

Windy and 34°1°.

Mostly agree

Now 34°1°

Windy · Feels like 22°−6°

Feels like: 22°−6°; Wind chill from 22 mph35 km/h wind · air 34°1°
Wind: 22 mph35 km/hgusts 28 mph45 km/h; From the north-northwest. Easing to 7 mph11 km/h by 1 PM
Dew point: 28°−2°; Dry · down to 19°−7° by 11 AM
UV index: 0Low; Moderate 12–3 PM · peak 3

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

18°10° cooler than this time yesterday (52°11° then, 34°1° now)

Good hours for

Gusts to 30 mph48 km/h until 9 AM
Low 35°2° today at 8 AM
Above 40°4° today by 11 AM
High 50°10° today at 3 PM
Rain tomorrow from noon (50%, 0.3 in7.6 mm)

This morningNear 39°4° · gusts to 30 mph48 km/h · Clear
This afternoonUp to 50°10° by 3 PM · Partly cloudy
TonightDown to 37°3° by 2 AM · Mostly cloudy
Tomorrow morningNear 38°3° · Cloudy
Tomorrow afternoonUp to 45°7° by 3 PM · Rain all afternoon (50%)
Tomorrow nightDown to 36°2° by 4 AM · Rain all night (50%)

Hourly forecast, next 48 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Sat 6a	Clear	38°3° (likely 34°1° to 38°3°)	27°−3°	0%	22 mph35 km/h from N, gusts 30 mph49 km/h	70%	24%	0
Sat 7a	Sunny	36°2° (likely 34°1° to 36°2°)	24°−4°	0%	22 mph35 km/h from N, gusts 29 mph47 km/h	72%	23%	0
Sat 8a	Sunny	35°2° (likely 33°1° to 35°2°)	24°−4°	0%	21 mph34 km/h from N, gusts 26 mph41 km/h	69%	21%	0
Sat 9a	Sunny	36°2° (likely 35°2° to 38°3°)	25°−4°	0%	17 mph27 km/h from NW, gusts 23 mph36 km/h	62%	18%	0
Sat 10a	Sunny	37°3° (likely 37°3° to 41°5°)	28°−2°	0%	14 mph23 km/h from NW, gusts 19 mph30 km/h	54%	3%	1
Sat 11a	Sunny	40°4° (likely 40°4° to 44°7°)	33°1°	0%	12 mph19 km/h from NW, gusts 16 mph26 km/h	42%	0%	2
Sat 12p	Sunny	43°6° (likely 43°6° to 48°9°)	37°3°	0%	12 mph19 km/h from NW, gusts 13 mph22 km/h	33%	1%	3
Sat 1p	Sunny	46°8° (likely 46°8° to 50°10°)	42°6°	0%	7 mph11 km/h from NW, gusts 14 mph22 km/h	30%	40%	3
Sat 2p	Sunny	49°9° (likely 48°9° to 51°11°)	47°8°	0%	6 mph10 km/h from NW, gusts 13 mph20 km/h	26%	8%	3
Sat 3p	Sunny	50°10° (likely 48°9° to 51°11°)	48°9°	0%	5 mph8 km/h from NW, gusts 10 mph15 km/h	25%	17%	2
Sat 4p	Cloudy	50°10° (likely 48°9° to 51°11°)	48°9°	0%	5 mph8 km/h from NW, gusts 8 mph13 km/h	27%	64%	1
Sat 5p	Cloudy	48°9° (likely 47°8° to 50°10°)	46°8°	0%	5 mph8 km/h from W, gusts 9 mph15 km/h	30%	67%	0
Sat 6p	Clear	46°8° (likely 44°7° to 46°8°)	43°6°	0%	6 mph10 km/h from S, gusts 11 mph18 km/h	37%	30%	0
Sat 7p	Cloudy	43°6° (likely 41°5° to 44°7°)	39°4°	0%	6 mph10 km/h from S, gusts 11 mph17 km/h	39%	70%	0
Sat 8p	Cloudy	42°6° (likely 40°4° to 43°6°)	38°3°	0%	6 mph10 km/h from SE, gusts 12 mph19 km/h	39%	71%	0
Sat 9p	Cloudy	40°4° (likely 38°3° to 42°6°)	36°2°	0%	6 mph10 km/h from SE, gusts 11 mph18 km/h	39%	72%	0
Sat 10p	Cloudy	39°4° (likely 37°3° to 41°5°)	35°2°	0%	6 mph10 km/h from SE, gusts 10 mph16 km/h	37%	73%	0
Sat 11p	Cloudy	39°4° (likely 36°2° to 40°4°)	35°2°	0%	6 mph10 km/h from SE, gusts 9 mph15 km/h	35%	74%	0
Sun 12a	Cloudy	38°3° (likely 36°2° to 40°4°)	34°1°	5%	5 mph8 km/h from SE, gusts 12 mph19 km/h	35%	76%	0
Sun 1a	Mostly cloudy	38°3° (likely 37°3° to 39°4°)	34°1°	5%	6 mph10 km/h from E, gusts 9 mph15 km/h	35%	73%	0
Sun 2a	Mostly cloudy	37°3° (likely 37°3° to 39°4°)	32°0°	5%	6 mph10 km/h from SE, gusts 12 mph19 km/h	37%	64%	0
Sun 3a	Cloudy	37°3° (likely 37°3° to 41°5°)	32°0°	5%	6 mph10 km/h from SE, gusts 16 mph25 km/h	38%	73%	0
Sun 4a	Cloudy	38°3° (likely 37°3° to 42°6°)	34°1°	5%	6 mph10 km/h from SE, gusts 13 mph21 km/h	38%	80%	0
Sun 5a	Cloudy	38°3° (likely 38°3° to 40°4°)	34°1°	5%	6 mph10 km/h from SE, gusts 14 mph23 km/h	42%	90%	0
Sun 6a	Cloudy	36°2° (likely 36°2° to 40°4°)	32°0°	10%	5 mph8 km/h from SE, gusts 13 mph21 km/h	47%	89%	0
Sun 7a	Cloudy	36°2° (likely 36°2° to 41°5°)	32°0°	10%	5 mph8 km/h from SE, gusts 12 mph20 km/h	52%	93%	0
Sun 8a	Cloudy	36°2° (likely 36°2° to 42°6°)	32°0°	10%	5 mph8 km/h from SE, gusts 12 mph20 km/h	56%	98%	0
Sun 9a	Cloudy	38°3° (likely 38°3° to 43°6°)	34°1°	10%	5 mph8 km/h from SE, gusts 11 mph18 km/h	59%	100%	1
Sun 10a	Cloudy	39°4° (likely 39°4° to 45°7°)	36°2°	10%	5 mph8 km/h from SE, gusts 12 mph19 km/h	62%	100%	1
Sun 11a	Cloudy	39°4° (likely 39°4° to 46°8°)	36°2°	10%	5 mph8 km/h from SE, gusts 15 mph24 km/h	67%	100%	0
Sun 12p	Cloudy	40°4° (likely 40°4° to 47°8°)	38°3°	50%, 0.02 in0.5 mm	3 mph5 km/h from SE, gusts 14 mph23 km/h	67%	100%	1
Sun 1p	Cloudy	42°6° (likely 42°6° to 47°8°)	40°4°	50%, 0.02 in0.5 mm	3 mph5 km/h from SE, gusts 12 mph19 km/h	65%	100%	2
Sun 2p	Cloudy	44°7° (likely 43°6° to 48°9°)	42°6°	50%, 0.02 in0.5 mm	3 mph5 km/h from SE, gusts 13 mph21 km/h	60%	100%	1
Sun 3p	Cloudy	45°7° (likely 43°6° to 48°9°)	44°7°	50%, 0.02 in0.5 mm	3 mph5 km/h from SE, gusts 10 mph16 km/h	60%	100%	1
Sun 4p	Cloudy	44°7° (likely 43°6° to 46°8°)	42°6°	50%, 0.02 in0.5 mm	3 mph5 km/h from S, gusts 9 mph14 km/h	60%	100%	0
Sun 5p	Cloudy	43°6° (likely 42°6° to 45°7°)	40°4°	50%, 0.02 in0.5 mm	5 mph8 km/h from S, gusts 9 mph14 km/h	62%	100%	0
Sun 6p	Cloudy	42°6° (likely 40°4° to 43°6°)	40°4°	50%, 0.01 in0.3 mm	3 mph5 km/h from SE, gusts 9 mph14 km/h	67%	100%	0
Sun 7p	Cloudy	40°4° (likely 40°4° to 41°5°)	38°3°	50%, 0.01 in0.3 mm	3 mph5 km/h from SE, gusts 10 mph15 km/h	73%	100%	0
Sun 8p	Cloudy	39°4° (likely 39°4° to 42°6°)	37°3°	50%, 0.01 in0.3 mm	3 mph5 km/h from SE, gusts 9 mph14 km/h	76%	100%	0
Sun 9p	Cloudy	39°4° (likely 39°4° to 42°6°)	37°3°	50%, 0.01 in0.3 mm	3 mph5 km/h from SE, gusts 7 mph12 km/h	79%	100%	0
Sun 10p	Cloudy	39°4° (likely 38°3° to 41°5°)	39°4°	50%, 0.01 in0.3 mm	2 mph3 km/h from SE, gusts 7 mph11 km/h	79%	100%	0
Sun 11p	Rain	39°4° (likely 37°3° to 41°5°)	39°4°	50%, 0.01 in0.3 mm	2 mph3 km/h from SE, gusts 6 mph10 km/h	79%	100%	0
Mon 12a	Rain	39°4° (likely 37°3° to 40°4°)	39°4°	50%, 0.02 in0.5 mm	2 mph3 km/h from SE, gusts 5 mph7 km/h	79%	100%	0
Mon 1a	Rain	38°3° (likely 35°2° to 41°5°)	38°3°	50%, 0.02 in0.5 mm	2 mph3 km/h from SE, gusts 5 mph7 km/h	82%	100%	0
Mon 2a	Snow	38°3° (likely 35°2° to 41°5°)	38°3°	50%, 0.02 in0.5 mm	2 mph3 km/h from S, gusts 5 mph9 km/h	79%	97%	0
Mon 3a	Snow	37°3° (likely 35°2° to 40°4°)	37°3°	50%, 0.02 in0.5 mm	2 mph3 km/h from S, gusts 6 mph10 km/h	82%	100%	0
Mon 4a	Snow	36°2° (likely 34°1° to 39°4°)	36°2°	50%, 0.02 in0.5 mm	2 mph3 km/h from S, gusts 7 mph11 km/h	85%	100%	0
Mon 5a	Snow	36°2° (likely 33°1° to 39°4°)	36°2°	50%, 0.02 in0.5 mm	2 mph3 km/h from S, gusts 6 mph10 km/h	89%	99%	0

Days ahead

Shaded: typical range for these dates (1991–2020)

Today, Oct 24. Cloudy. High 51°11°, low 35°2°. Typical 55°13° / 32°0°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 35°2°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 50°10°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 42°6°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 37°3°
  Dry
Official NWS forecast
Today: Mostly sunny. High near 51, with temperatures falling to around 48 in the afternoon. Northwest wind 5 to 22 mph, with gusts as high as 31 mph.
Tonight: Mostly cloudy. Low around 35, with temperatures rising to around 38 overnight. Southeast wind around 6 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
48°9°–52°11°
Low, likely
33°1°–35°2°
Typical high / low
55°13° / 32°0°
Wind
22 mph36 km/h, gusts 41 mph66 km/h
UV peak
4
Tomorrow, Oct 25. Snow. High 46°8°, low 34°1°. Typical 54°12° / 32°0°. Snow 0.03 in0.8 mm, 50% chance. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 36°2°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 45°7°
  50% chance · 0.12 in3 mm
3. Evening
  6 PM–midnight
  Rain, 39°4°
  50% chance · 0.06 in1.5 mm
4. Overnight
  midnight–6 AM
  Snow, 36°2°
  50% chance · 0.12 in3 mm
Official NWS forecast
Day: A chance of rain and snow after noon. Cloudy. High near 46, with temperatures falling to around 43 in the afternoon. Southeast wind around 5 mph. Chance of precipitation is 50%.
Night: A chance of rain before 2am, then a chance of rain and snow between 2am and 4am, then a chance of rain and snow between 4am and 5am, then a chance of rain and snow. Cloudy. Low around 34, with temperatures rising to around 36 overnight. South wind around 3 mph. Chance of precipitation is 50%.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
43°6°–48°9°
Low, likely
34°1°–39°4°
Typical high / low
54°12° / 32°0°
Wind
13 mph22 km/h, gusts 24 mph38 km/h
UV peak
2
Monday, Oct 26. Snow. High 44°7°, low 33°1°. Typical 54°12° / 31°−1°. Snow 0–2 in0–5 cm, 40% chance. Mostly agree.
1. Morning
  6 AM–noon
  Snow, 35°2°
  60% chance · 0.3 in0.8 cm
2. Afternoon
  noon–6 PM
  Drizzle, 37°3°
  50% chance · 0.07 in1.7 mm
3. Evening
  6 PM–midnight
  Cloudy, 34°1°
  20% chance
4. Overnight
  midnight–6 AM
  Cloudy, 34°1°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain and snow before 8am, then a chance of rain and snow. Mostly cloudy. High near 44, with temperatures falling to around 42 in the afternoon. South wind 2 to 6 mph, with gusts as high as 16 mph. Chance of precipitation is 40%.
Night: Mostly cloudy, with a low around 33. Southeast wind around 9 mph, with gusts as high as 17 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
38°3°–44°7°
Low, likely
29°−2°–35°2°
Typical high / low
54°12° / 31°−1°
Wind
10 mph17 km/h, gusts 17 mph28 km/h
Tuesday, Oct 27. Partly sunny. High 54°12°, low 33°1°. Typical 54°12° / 31°−1°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 38°3°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 56°13°
  Dry
3. Evening
  6 PM–midnight
  Clear, 40°4°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 32°0°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 54.
Night: A slight chance of rain before midnight. Partly cloudy, with a low around 33.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
51°11°–58°14°
Low, likely
30°−1°–37°3°
Typical high / low
54°12° / 31°−1°
Wind
25 mph41 km/h, gusts 49 mph80 km/h
UV peak
4
Wednesday, Oct 28. Mostly sunny. High 53°12°, low 34°1°. Typical 53°12° / 31°−1°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 34°1°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 55°13°
  Dry
3. Evening
  6 PM–midnight
  Clear, 44°7°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 39°4°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 53.
Night: Mostly clear, with a low around 34.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
53°12°–56°13°
Low, likely
29°−2°–36°2°
Typical high / low
53°12° / 31°−1°
Wind
9 mph14 km/h, gusts 41 mph65 km/h
UV peak
4
Thursday, Oct 29. Mostly sunny. High 57°14°, low 37°3°. Typical 53°12° / 30°−1°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 41°5°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 60°16°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 50°10°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 43°6°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 57.
Night: Partly cloudy, with a low around 37.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
57°14°–63°17°
Low, likely
35°2°–41°5°
Typical high / low
53°12° / 30°−1°
Wind
17 mph27 km/h, gusts 39 mph63 km/h
UV peak
4
Friday, Oct 30. Partly sunny. High 57°14°, low 37°3°. Typical 52°11° / 30°−1°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 45°7°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 61°16°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 53°12°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 45°7°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 57.
Night: A slight chance of rain before 3am, then a slight chance of rain and snow. Partly cloudy, with a low around 37.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
57°14°–63°17°
Low, likely
37°3°–46°8°
Typical high / low
52°11° / 30°−1°
Wind
17 mph27 km/h, gusts 31 mph50 km/h
UV peak
3
Saturday, Oct 31. Drizzle. High 52°11°, low 40°4°. Typical 52°11° / 30°−1°. Rain 0.04 in1 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Drizzle, 44°7°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 53°11°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 47°8°
  Dry
4. Overnight
  midnight–6 AM
  Drizzle, 36°2°
  Dry
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
48°9°–57°14°
Low, likely
35°2°–45°7°
Typical high / low
52°11° / 30°−1°
Wind
13 mph20 km/h, gusts 20 mph32 km/h
UV peak
3
Sunday, Nov 1. Drizzle. High 46°8°, low 33°1°. Typical 51°11° / 29°−2°. Rain 0.1 in2.5 mm, 10% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Drizzle, 36°2°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 46°8°
  Dry
3. Evening
  6 PM–midnight
  Clear, 38°4°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 32°0°
  Dry
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
42°6°–52°11°
Low, likely
24°−4°–41°5°
Typical high / low
51°11° / 29°−2°
Wind
21 mph33 km/h, gusts 34 mph55 km/h
UV peak
4
Monday, Nov 2. Cloudy. High 48°9°, low 35°2°. Typical 51°11° / 29°−2°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 38°3°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 49°9°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 42°6°
  Dry
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
45°7°–52°11°
Low, likely
30°−1°–40°4°
Typical high / low
51°11° / 29°−2°
Wind
14 mph22 km/h, gusts 26 mph42 km/h
UV peak
4

10 days15 days30 days

The outlook

Today
Dry, high 51°, low 35°.
Tomorrow
46% chance of snow, high 46°, low 34°, cooling off.
Monday
42% chance of snow, high 44°, low 33°.
Rest of week
Mostly dry, highs 46–57°.

Want the meteorologists’ reasoning? Read the NWS forecast discussion (UNR) (opens in a new tab)

What changed since yesterday

No meaningful changes from yesterday’s forecast.

Radar

Radar data: NOAA MRMS, rendered by forecast.blue

Radar loads when scrolled into view

Full-screen radar

Rivers

NOAA river gauges within 25 mi

Castle Creek above Deerfield

21 mi

Below flood stage

Level: 2.8 ft
Flow: 16 cfs

Reading from Sat 4:30 AM · NWS gauge page

Castle Creek below Deerfield Reservoir

24 mi

Below flood stage

Level: 4.0 ft
Flow: 22 cfs

Reading from Sat 4:01 AM · NWS gauge page

Deerfield Reservoir

24 mi

Below flood stage

Level: 5902 ft

Reading from Sat 4 AM · NWS gauge page

For your home

What this week’s weather means for heating, cooling, pipes and fresh air.

Heating this week

About 69% less heating than a typical week.

This week 49Typical 159

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 43
h below 17°F: 0
h below 5°F: 0

47, 17 and 5°F are the test points heat pumps are rated at. About 4 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 28°F).

Open the windows?

No stretch in the next few days is comfortable enough outside, by temperature, dew point and air quality.

Is this typical?

Newcastle · official normals 1991–2020 · records 1906–2026

Oct 24, today vs a typical year

Today’s expected high is 4°2° colder than typical.

Last 7 days vs normal

On average 12°7° warmer than normal (daily mean temperature).

+11°+6°SunOct 18
+7°+4°MonOct 19
+6°+3°TueOct 20
+15°+8°WedOct 21
+16°+9°ThuOct 22
+19°+10°FriOct 23
—SatOct 24

Newcastle weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 10 h 36 min; Losing 2 min 49 s a day; shortest Dec 21, 1 h 41 min less
Golden hour: 5:18–6:16 PM; Morning 7:04–8:03 AM
Blue hour: 6:16–6:27 PM; Morning 6:53–7:04 AM; first light 6:53 AM

Stars tonight? Unknown

Cloud forecast not available for tonight.

Moon

Waxing gibbous

96% lit · growing

Today: sets 5:37 AM · rises 4:58 PM
Full moon: Oct 25
New moon: Nov 9

Looking northeast from Newcastle. The highest point on the skyline is about 6,200 ft, 8 mi away.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.

Newcastle, WY weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Castle Creek above Deerfield

Castle Creek below Deerfield Reservoir

Deerfield Reservoir

For your home

Heating this week

Heat-pump hours, next 7 days

Comfort

Open the windows?

Is this typical?

Oct 24, today vs a typical year

Last 7 days vs normal

Sun & moon

Sun

Stars tonight? Unknown

Moon