Observed 10:55 AM MDT at KGCC

Sleepy Hollow, WY weather

Sunny and 39°4°, 8°4° colder than a typical Oct 24.

Mostly agree

Now 39°4°

Sunny · Feels like 33°1°

Feels like: 33°1°; Wind chill from 9 mph15 km/h wind · air 39°4°
Wind: 9 mph15 km/h; From the north. 58–13 mph21 km/h through 11 PM
Dew point: 19°−7°; Dry · down to 11°−12° by 4 PM
UV index: 2Low; Moderate 12–3 PM · peak 3
Air quality: 35Good; Main pollutant: Ozone
Pressure: 30.39 inHg1029 hPa; Steady over the last 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

30°17° cooler than this time yesterday (66°19° then, 36°2° now)

Good hours for

High 46°8° today at 2 PM
Below freezing tomorrow 6–8 AM (low 32°0°)
Low 32°0° tomorrow at 6 AM
Rain tomorrow noon–6 PM (40%, 0.06 in1.5 mm)

This afternoonUp to 46°8° by 2 PM · Partly cloudy
TonightDown to 34°1° by 5 AM · Mostly cloudy
Tomorrow morningUp to 40°4° by 11 AM · freezing, low 32°0° · Mostly cloudy
Tomorrow afternoonUp to 45°7° by 2 PM · Rain all afternoon (40%)
Tomorrow nightDown to 35°2° by 4 AM · rain chance 30% · Cloudy
Monday morningUp to 38°3° by 10 AM · rain chance 10% · Cloudy

Hourly forecast, next 48 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Sat 11a	Sunny	39°4° (likely 37°3° to 39°4°)	33°1°	0%	9 mph14 km/h from N, gusts 13 mph22 km/h	54%	11%	2
Sat 12p	Sunny	41°5° (likely 40°4° to 42°6°)	36°2°	0%	7 mph11 km/h from N, gusts 8 mph14 km/h	43%	10%	3
Sat 1p	Sunny	43°6° (likely 42°6° to 44°7°)	39°4°	0%	6 mph10 km/h from N, gusts 5 mph9 km/h	33%	13%	3
Sat 2p	Mostly sunny	46°8° (likely 44°7° to 46°8°)	44°7°	0%	5 mph8 km/h from N, gusts 4 mph7 km/h	27%	19%	3
Sat 3p	Mostly sunny	46°8° (likely 45°7° to 47°8°)	44°7°	0%	5 mph8 km/h from N, gusts 6 mph9 km/h	25%	21%	2
Sat 4p	Mostly sunny	46°8° (likely 46°8° to 48°9°)	44°7°	0%	5 mph8 km/h from NE, gusts 9 mph14 km/h	24%	62%	1
Sat 5p	Partly sunny	45°7° (likely 45°7° to 47°8°)	43°6°	0%	5 mph8 km/h from E, gusts 11 mph18 km/h	23%	75%	0
Sat 6p	Cloudy	44°7° (likely 43°6° to 45°7°)	41°5°	0%	5 mph8 km/h from E, gusts 9 mph15 km/h	24%	79%	0
Sat 7p	Cloudy	41°5° (likely 41°5° to 42°6°)	38°3°	0%	5 mph8 km/h from SE, gusts 9 mph14 km/h	29%	81%	0
Sat 8p	Mostly cloudy	40°4° (likely 39°4° to 42°6°)	35°2°	0%	7 mph11 km/h from SE, gusts 11 mph17 km/h	31%	74%	0
Sat 9p	Mostly clear	39°4° (likely 39°4° to 41°5°)	33°1°	0%	8 mph13 km/h from SE, gusts 14 mph22 km/h	35%	41%	0
Sat 10p	Mostly clear	39°4° (likely 38°3° to 41°5°)	32°0°	0%	10 mph16 km/h from SE, gusts 16 mph26 km/h	39%	37%	0
Sat 11p	Cloudy	38°3° (likely 38°3° to 40°4°)	30°−1°	0%	13 mph21 km/h from SE, gusts 19 mph30 km/h	44%	79%	0
Sun 12a	Partly cloudy	38°3° (likely 37°3° to 39°4°)	30°−1°	0%	13 mph21 km/h from S, gusts 18 mph28 km/h	44%	76%	0
Sun 1a	Partly cloudy	38°3° (likely 36°2° to 39°4°)	30°−1°	0%	14 mph23 km/h from S, gusts 17 mph28 km/h	42%	71%	0
Sun 2a	Cloudy	37°3° (likely 35°2° to 38°3°)	28°−2°	0%	14 mph23 km/h from S, gusts 20 mph32 km/h	44%	64%	0
Sun 3a	Partly cloudy	36°2° (likely 34°1° to 37°3°)	27°−3°	0%	14 mph23 km/h from S, gusts 20 mph32 km/h	45%	43%	0
Sun 4a	Cloudy	35°2° (likely 34°1° to 36°2°)	26°−3°	0%	14 mph23 km/h from SE, gusts 20 mph32 km/h	47%	60%	0
Sun 5a	Cloudy	34°1° (likely 33°1° to 36°2°)	25°−4°	0%	13 mph21 km/h from SE, gusts 21 mph34 km/h	51%	60%	0
Sun 6a	Cloudy	32°0° (likely 32°0° to 38°3°)	23°−5°	10%	13 mph21 km/h from SE, gusts 20 mph33 km/h	58%	60%	0
Sun 7a	Cloudy	32°0° (likely 31°−1° to 38°3°)	23°−5°	10%	12 mph19 km/h from SE, gusts 18 mph29 km/h	63%	59%	0
Sun 8a	Mostly cloudy	33°1° (likely 31°−1° to 39°4°)	24°−4°	10%	12 mph19 km/h from SE, gusts 19 mph30 km/h	66%	51%	0
Sun 9a	Cloudy	36°2° (likely 36°2° to 40°4°)	29°−2°	10%	10 mph16 km/h from SE, gusts 19 mph30 km/h	67%	76%	1
Sun 10a	Cloudy	38°3° (likely 38°3° to 42°6°)	31°−1°	10%	12 mph19 km/h from SE, gusts 19 mph30 km/h	64%	77%	2
Sun 11a	Cloudy	40°4° (likely 40°4° to 45°7°)	33°1°	10%	10 mph16 km/h from SE, gusts 19 mph30 km/h	64%	80%	2
Sun 12p	Cloudy	41°5° (likely 41°5° to 48°9°)	35°2°	40%, 0.01 in0.3 mm	10 mph16 km/h from SE, gusts 15 mph25 km/h	67%	80%	3
Sun 1p	Cloudy	43°6° (likely 43°6° to 49°9°)	37°3°	40%, 0.01 in0.3 mm	10 mph16 km/h from SE, gusts 13 mph20 km/h	65%	81%	2
Sun 2p	Cloudy	45°7° (likely 42°6° to 50°10°)	40°4°	40%, 0.01 in0.3 mm	9 mph14 km/h from SE, gusts 12 mph19 km/h	60%	82%	1
Sun 3p	Cloudy	45°7° (likely 42°6° to 50°10°)	40°4°	40%, 0.01 in0.3 mm	9 mph14 km/h from SE, gusts 11 mph18 km/h	63%	83%	1
Sun 4p	Cloudy	45°7° (likely 41°5° to 50°10°)	41°5°	40%, 0.01 in0.3 mm	8 mph13 km/h from SE, gusts 11 mph18 km/h	63%	85%	1
Sun 5p	Cloudy	43°6° (likely 41°5° to 49°9°)	38°3°	40%, 0.01 in0.3 mm	8 mph13 km/h from SE, gusts 11 mph18 km/h	67%	88%	0
Sun 6p	Cloudy	42°6° (likely 40°4° to 47°8°)	37°3°	30%	8 mph13 km/h from SE, gusts 11 mph18 km/h	73%	91%	0
Sun 7p	Cloudy	39°4° (likely 39°4° to 46°8°)	33°1°	30%	8 mph13 km/h from SE, gusts 13 mph21 km/h	82%	94%	0
Sun 8p	Cloudy	38°3° (likely 38°3° to 44°7°)	32°0°	30%	9 mph14 km/h from SE, gusts 16 mph25 km/h	85%	98%	0
Sun 9p	Cloudy	38°3° (likely 37°3° to 43°6°)	32°0°	30%	9 mph14 km/h from SE, gusts 17 mph28 km/h	89%	100%	0
Sun 10p	Cloudy	38°3° (likely 37°3° to 42°6°)	32°0°	30%	9 mph14 km/h from SE, gusts 19 mph30 km/h	89%	100%	0
Sun 11p	Cloudy	37°3° (likely 36°2° to 41°5°)	30°−1°	30%	10 mph16 km/h from SE, gusts 19 mph31 km/h	92%	100%	0
Mon 12a	Cloudy	37°3° (likely 36°2° to 41°5°)	30°−1°	5%	10 mph16 km/h from SE, gusts 19 mph31 km/h	92%	99%	0
Mon 1a	Cloudy	37°3° (likely 36°2° to 40°4°)	30°−1°	5%	10 mph16 km/h from SE, gusts 19 mph31 km/h	92%	100%	0
Mon 2a	Cloudy	36°2° (likely 36°2° to 40°4°)	28°−2°	5%	12 mph19 km/h from SE, gusts 18 mph29 km/h	92%	100%	0
Mon 3a	Cloudy	36°2° (likely 36°2° to 39°4°)	28°−2°	5%	12 mph19 km/h from SE, gusts 17 mph27 km/h	92%	99%	0
Mon 4a	Cloudy	35°2° (likely 35°2° to 39°4°)	27°−3°	5%	12 mph19 km/h from SE, gusts 18 mph29 km/h	96%	98%	0
Mon 5a	Cloudy	35°2° (likely 35°2° to 39°4°)	26°−3°	5%	13 mph21 km/h from SE, gusts 17 mph28 km/h	92%	99%	0
Mon 6a	Cloudy	34°1° (likely 34°1° to 40°4°)	25°−4°	10%	13 mph21 km/h from SE, gusts 17 mph27 km/h	92%	97%	0
Mon 7a	Cloudy	35°2° (likely 35°2° to 41°5°)	26°−3°	10%	13 mph21 km/h from SE, gusts 17 mph27 km/h	92%	95%	0
Mon 8a	Mostly cloudy	35°2° (likely 35°2° to 41°5°)	26°−3°	10%	13 mph21 km/h from S, gusts 16 mph25 km/h	96%	93%	0
Mon 9a	Mostly cloudy	36°2° (likely 35°2° to 42°6°)	28°−2°	10%	13 mph21 km/h from S, gusts 18 mph28 km/h	96%	96%	0
Mon 10a	Cloudy	38°3° (likely 36°2° to 42°6°)	30°−1°	10%	13 mph21 km/h from S, gusts 18 mph28 km/h	96%	99%	0

Days ahead

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

Today, Oct 24. Cloudy. High 47°8°, low 31°−1°. Typical 55°13° / 31°−1°. Dry. Mostly agree.
1. Afternoon
  noon–6 PM
  Mostly sunny, 46°8°
  Dry
2. Evening
  6 PM–midnight
  Mostly clear, 40°4°
  Dry
3. Overnight
  midnight–6 AM
  Partly cloudy, 34°1°
  Dry
Official NWS forecast
Today: Sunny. High near 47, with temperatures falling to around 45 in the afternoon. Northeast wind 5 to 9 mph, with gusts as high as 18 mph.
Tonight: Partly cloudy. Low around 31, with temperatures rising to around 34 overnight. Southeast wind 5 to 14 mph, with gusts as high as 29 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
46°8°–48°9°
Low, likely
31°−1°–33°1°
Typical high / low
55°13° / 31°−1°
Wind
24 mph38 km/h, gusts 38 mph61 km/h
UV peak
4
Tomorrow, Oct 25. Cloudy. High 46°8°, low 34°1°. Typical 55°13° / 31°−1°. Rain, 40% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 33°1°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 45°7°
  40% chance · 0.06 in1.5 mm
3. Evening
  6 PM–midnight
  Cloudy, 38°3°
  30% chance
4. Overnight
  midnight–6 AM
  Cloudy, 35°2°
  Dry
Official NWS forecast
Day: A chance of rain after noon. Mostly cloudy. High near 46, with temperatures falling to around 43 in the afternoon. Southeast wind 8 to 13 mph, with gusts as high as 29 mph. Chance of precipitation is 40%.
Night: A chance of rain before midnight. Cloudy, with a low around 34. Southeast wind 8 to 13 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
44°7°–50°10°
Low, likely
31°−1°–36°2°
Typical high / low
55°13° / 31°−1°
Wind
18 mph28 km/h, gusts 28 mph46 km/h
UV peak
3
Monday, Oct 26. Mostly cloudy. High 47°8°, low 33°1°. Typical 55°13° / 31°−1°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Mostly cloudy, 35°2°
  20% chance
2. Afternoon
  noon–6 PM
  Cloudy, 45°7°
  20% chance
3. Evening
  6 PM–midnight
  Clear, 36°2°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 33°1°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny. High near 47, with temperatures falling to around 44 in the afternoon. Southeast wind around 15 mph, with gusts as high as 28 mph.
Night: Partly cloudy, with a low around 33. Southeast wind 14 to 20 mph, with gusts as high as 37 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
42°6°–48°9°
Low, likely
32°0°–35°2°
Typical high / low
55°13° / 31°−1°
Wind
19 mph30 km/h, gusts 26 mph41 km/h
UV peak
1
Tuesday, Oct 27. Rain. High 58°14°, low 31°−1°. Typical 54°12° / 30°−1°. Rain 0.09 in2.3 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 40°5°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 52°11°
  Dry
3. Evening
  6 PM–midnight
  Clear, 39°4°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 35°1°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of rain after noon. Mostly sunny, with a high near 58.
Night: A slight chance of rain. Partly cloudy, with a low around 31.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
49°9°–58°14°
Low, likely
31°−1°–35°2°
Typical high / low
54°12° / 30°−1°
Wind
34 mph55 km/h, gusts 44 mph71 km/h
UV peak
4
Wednesday, Oct 28. Partly sunny. High 55°13°, low 31°−1°. Typical 54°12° / 30°−1°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 36°2°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 57°14°
  Dry
3. Evening
  6 PM–midnight
  Clear, 45°7°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 35°2°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 55.
Night: Partly cloudy, with a low around 31.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
55°13°–58°14°
Low, likely
31°−1°–36°2°
Typical high / low
54°12° / 30°−1°
Wind
13 mph21 km/h, gusts 41 mph65 km/h
UV peak
3
Thursday, Oct 29. Partly sunny. High 58°14°, low 33°1°. Typical 54°12° / 30°−1°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 36°2°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 60°16°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 51°11°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 44°7°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 58.
Night: Partly cloudy, with a low around 33.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
58°14°–63°17°
Low, likely
30°−1°–39°4°
Typical high / low
54°12° / 30°−1°
Wind
25 mph40 km/h, gusts 46 mph74 km/h
UV peak
3
Friday, Oct 30. Cloudy. High 57°14°, low 34°1°. Typical 53°12° / 29°−2°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 45°7°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 51°10°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 39°4°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 57.
Night: A slight chance of rain and snow after midnight. Mostly cloudy, with a low around 34.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
56°13°–66°19°
Low, likely
34°1°–44°7°
Typical high / low
53°12° / 29°−2°
Wind
25 mph40 km/h, gusts 45 mph72 km/h
UV peak
4
Saturday, Oct 31. Cloudy. High 46°8°, low 34°1°. Typical 53°12° / 29°−2°. Rain 0.04 in1 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 38°3°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 43°6°
  Dry
3. Evening
  6 PM–midnight
  Drizzle, 40°5°
  Dry
4. Overnight
  midnight–6 AM
  Rain, 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
40°4°–53°12°
Low, likely
25°−4°–38°3°
Typical high / low
53°12° / 29°−2°
Wind
16 mph26 km/h, gusts 27 mph44 km/h
UV peak
3
Sunday, Nov 1. Snow showers. High 44°7°, low 32°0°. Typical 52°11° / 29°−2°. Snow 0.07 in1.8 mm, 10% chance. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 35°2°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 44°6°
  Dry
3. Evening
  6 PM–midnight
  Clear, 36°2°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 33°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.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
42°6°–46°8°
Low, likely
21°−6°–40°4°
Typical high / low
52°11° / 29°−2°
Wind
24 mph39 km/h, gusts 38 mph61 km/h
UV peak
4
Monday, Nov 2. Cloudy. High 50°10°, low 33°1°. Typical 52°11° / 28°−2°. Rain 0.26 in6.6 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 39°4°
  20% chance · 0.13 in3.4 mm
2. Afternoon
  noon–6 PM
  Sunny, 50°10°
  20% chance · 0.07 in1.8 mm
3. Evening
  6 PM–midnight
  Cloudy, 41°5°
  20% chance · 0.02 in0.5 mm
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°–59°15°
Low, likely
33°1°–34°1°
Typical high / low
52°11° / 28°−2°
Wind
15 mph24 km/h, gusts 25 mph40 km/h
UV peak
4

10 days15 days30 days

The outlook

Today
Dry, high 47°, low 31°.
Tomorrow
Dry, high 46°, low 34°.
Monday
Dry, high 47°, low 33°.
Rest of week
Mostly dry, highs 44–58°.

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

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Full-screen radar

For your home

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

Heating this week

About 68% less heating than a typical week.

This week 51Typical 159

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 47
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 16 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 19°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?

GILLETTE 3SE · official normals 1991–2020 · records 1902–2026

Oct 24, today vs a typical year

Today’s expected high is 8°4° colder than typical.

Last 7 days vs normal

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

+13°+7°SunOct 18
+9°+5°MonOct 19
+10°+5°TueOct 20
+9°+5°WedOct 21
+16°+9°ThuOct 22
+17°+9°FriOct 23
—SatOct 24

Sleepy Hollow weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 10 h 35 min; Losing 2 min 53 s a day; shortest Dec 21, 1 h 43 min less
Golden hour: 5:22–6:21 PM; Morning 7:10–8:08 AM
Blue hour: 6:21–6:32 PM; Morning 6:58–7:10 AM; first light 6:58 AM

Stars tonight? Poor

Clouds most of the night (about 63% cover).

Moon

Waxing gibbous

97% lit · growing

Today: sets 5:43 AM · rises 5:02 PM
Full moon: Oct 25
New moon: Nov 9

Looking west from Sleepy Hollow. The highest point on the skyline is about 13,000 ft, 87 mi away.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.