Observed 4:35 PM MDT at KEMM

Fontenelle, WY weather

Mostly cloudy and 43°6°.

Forecasts agree

Now 43°6°

Mostly cloudy · Feels like 37°3°

Feels like: 37°3°; Wind chill from 10 mph17 km/h wind · air 43°6°
Wind: 10 mph17 km/h; From the east-northeast. 35–10 mph17 km/h through 5 AM
Dew point: 32°0°; Dry, static shocks likely
UV tomorrow: 4Moderate; Moderate 12–5 PM · peak 4
Air quality: 30Good; Main pollutant: Ozone
Pressure: 30.23 inHg1024 hPa; Falling · −0.06 inHg−1.9 hPa in 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

4°2° cooler than this time yesterday (46°8° then, 43°6° now)

Good hours for

Below 40°4° tonight after 9 PM
Below freezing tomorrow 4–9 AM (low 29°−2°)
Low 29°−2° tomorrow at 7 AM
Above 40°4° tomorrow by 11 AM
Below freezing tomorrow night 5–9 AM (low 31°−1°)

TonightDown to 31°−1° by 4 AM · freezing, low 31°−1° · Partly cloudy
Tomorrow morningUp to 41°5° by 11 AM · rain chance 20% · freezing, low 29°−2° · Mostly cloudy
Tomorrow afternoonUp to 49°9° by 5 PM · rain chance 20% · Mostly cloudy
Tomorrow nightDown to 32°0° by 5 AM · rain chance 10% · freezing, low 32°0° · Partly cloudy
Monday morningUp to 40°4° by 11 AM · freezing, low 31°−1° · Partly cloudy
Monday afternoonUp to 51°11° by 4 PM · Partly 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 5p	Cloudy	50°10° (likely 47°8° to 50°10°)	46°8°	0%	9 mph14 km/h from E, gusts 11 mph18 km/h	46%	67%	2
Sat 6p	Partly cloudy	48°9° (likely 45°7° to 48°9°)	44°7°	0%	9 mph14 km/h from E, gusts 10 mph16 km/h	48%	56%	1
Sat 7p	Partly cloudy	45°7° (likely 41°5° to 45°7°)	41°5°	0%	7 mph11 km/h from ENE, gusts 10 mph16 km/h	59%	65%	0
Sat 8p	Mostly cloudy	43°6° (likely 38°3° to 43°6°)	39°4°	0%	7 mph11 km/h from ENE, gusts 9 mph15 km/h	64%	58%	0
Sat 9p	Mostly cloudy	39°4° (likely 35°2° to 40°4°)	34°1°	0%	7 mph11 km/h from NE, gusts 9 mph15 km/h	71%	22%	0
Sat 10p	Clear	37°3° (likely 33°1° to 39°4°)	32°0°	0%	6 mph10 km/h from NNE, gusts 8 mph14 km/h	75%	16%	0
Sat 11p	Clear	36°2° (likely 31°−1° to 38°3°)	31°−1°	0%	6 mph10 km/h from N, gusts 6 mph10 km/h	77%	9%	0
Sun 12a	Clear	35°2° (likely 31°−1° to 37°3°)	29°−2°	0%	7 mph11 km/h from N, gusts 7 mph12 km/h	77%	5%	0
Sun 1a	Clear	35°2° (likely 30°−1° to 36°2°)	30°−1°	0%	6 mph10 km/h from N, gusts 7 mph11 km/h	82%	3%	0
Sun 2a	Clear	34°1° (likely 30°−1° to 35°2°)	29°−2°	0%	6 mph10 km/h from NNW, gusts 7 mph11 km/h	83%	11%	0
Sun 3a	Cloudy	33°1° (likely 30°−1° to 34°1°)	27°−3°	0%	7 mph11 km/h from NNW, gusts 4 mph7 km/h	83%	57%	0
Sun 4a	Cloudy	31°−1° (likely 28°−2° to 33°1°)	26°−3°	0%	5 mph8 km/h from NNW, gusts 3 mph4 km/h	86%	70%	0
Sun 5a	Mostly cloudy	31°−1° (likely 28°−2° to 33°1°)	28°−2°	5%	3 mph5 km/h from NW, gusts 5 mph7 km/h	83%	64%	0
Sun 6a	Cloudy	31°−1° (likely 28°−2° to 32°0°)	26°−3°	10%, 0.02 in0.5 mm	5 mph8 km/h from NNW, gusts 4 mph6 km/h	83%	64%	0
Sun 7a	Cloudy	29°−2° (likely 29°−2° to 32°0°)	24°−4°	10%, 0.02 in0.5 mm	5 mph8 km/h from NNW, gusts 3 mph6 km/h	86%	76%	0
Sun 8a	Cloudy	30°−1° (likely 30°−1° to 33°1°)	25°−4°	10%, 0.02 in0.5 mm	5 mph8 km/h from NNW, gusts 4 mph7 km/h	86%	85%	0
Sun 9a	Cloudy	34°1° (likely 33°1° to 34°1°)	30°−1°	10%, 0.02 in0.5 mm	5 mph8 km/h from N, gusts 3 mph5 km/h	86%	78%	0
Sun 10a	Snow	38°3° (likely 35°2° to 38°3°)	34°1°	20%, 0.02 in0.5 mm	6 mph10 km/h from ESE, gusts 4 mph6 km/h	82%	80%	1
Sun 11a	Cloudy	41°5° (likely 37°3° to 43°6°)	37°3°	20%, 0.02 in0.5 mm	6 mph10 km/h from ESE, gusts 4 mph7 km/h	76%	95%	2
Sun 12p	Cloudy	43°6° (likely 41°5° to 45°7°)	40°4°	10%	5 mph8 km/h from NNE, gusts 5 mph8 km/h	72%	79%	3
Sun 1p	Cloudy	44°7° (likely 43°6° to 48°9°)	41°5°	10%	5 mph8 km/h from W, gusts 5 mph9 km/h	70%	80%	4
Sun 2p	Cloudy	46°8° (likely 44°7° to 50°10°)	44°7°	20%	5 mph8 km/h from NW, gusts 9 mph14 km/h	68%	80%	4
Sun 3p	Showers	47°8° (likely 45°7° to 51°11°)	45°7°	20%	5 mph8 km/h from SE, gusts 8 mph12 km/h	67%	77%	4
Sun 4p	Partly sunny	48°9° (likely 45°7° to 52°11°)	45°7°	20%	6 mph10 km/h from SE, gusts 8 mph13 km/h	64%	53%	3
Sun 5p	Showers	49°9° (likely 45°7° to 51°11°)	47°8°	20%	6 mph10 km/h from SE, gusts 7 mph12 km/h	63%	63%	2
Sun 6p	Mostly clear	47°8° (likely 45°7° to 49°9°)	44°7°	5%	7 mph11 km/h from SE, gusts 7 mph10 km/h	66%	58%	1
Sun 7p	Mostly cloudy	44°7° (likely 42°6° to 46°8°)	40°4°	10%	7 mph11 km/h from ESE, gusts 7 mph11 km/h	75%	55%	0
Sun 8p	Mostly clear	44°7° (likely 40°4° to 44°7°)	41°5°	5%	6 mph10 km/h from ESE, gusts 7 mph11 km/h	79%	18%	0
Sun 9p	Mostly clear	41°5° (likely 38°3° to 42°6°)	37°3°	0%	6 mph10 km/h from ESE, gusts 7 mph11 km/h	81%	31%	0
Sun 10p	Mostly cloudy	39°4° (likely 36°2° to 41°5°)	35°2°	0%	6 mph10 km/h from E, gusts 7 mph11 km/h	84%	51%	0
Sun 11p	Mostly cloudy	38°3° (likely 33°1° to 40°4°)	34°1°	5%	6 mph10 km/h from ENE, gusts 7 mph11 km/h	85%	51%	0
Mon 12a	Cloudy	37°3° (likely 33°1° to 39°4°)	32°0°	5%	6 mph10 km/h from NE, gusts 7 mph11 km/h	84%	86%	0
Mon 1a	Partly cloudy	37°3° (likely 32°0° to 39°4°)	33°1°	0%	5 mph8 km/h from NE, gusts 6 mph10 km/h	87%	69%	0
Mon 2a	Partly cloudy	36°2° (likely 32°0° to 38°3°)	33°1°	0%	3 mph5 km/h from NE, gusts 6 mph9 km/h	88%	77%	0
Mon 3a	Partly cloudy	34°1° (likely 32°0° to 37°3°)	31°−1°	0%	3 mph5 km/h from NE, gusts 4 mph7 km/h	88%	43%	0
Mon 4a	Clear	33°1° (likely 31°−1° to 37°3°)	33°1°	0%	2 mph3 km/h from NNE, gusts 4 mph7 km/h	92%	17%	0
Mon 5a	Clear	32°0° (likely 30°−1° to 36°2°)	32°0°	0%	2 mph3 km/h from NE, gusts 4 mph6 km/h	91%	16%	0
Mon 6a	Clear	31°−1° (likely 29°−2° to 35°2°)	31°−1°	0%	2 mph3 km/h from NE, gusts 4 mph6 km/h	91%	18%	0
Mon 7a	Clear	32°0° (likely 26°−3° to 35°2°)	32°0°	0%	1 mph2 km/h from ENE, gusts 4 mph6 km/h	94%	27%	0
Mon 8a	Partly sunny	32°0° (likely 25°−4° to 34°1°)	32°0°	0%	1 mph2 km/h from E, gusts 4 mph6 km/h	96%	76%	0
Mon 9a	Cloudy	33°1° (likely 29°−2° to 35°2°)	33°1°	0%	2 mph3 km/h from SE, gusts 3 mph5 km/h	95%	76%	0
Mon 10a	Cloudy	36°2° (likely 32°0° to 38°3°)	36°2°	0%	2 mph3 km/h from SE, gusts 3 mph4 km/h	90%	66%	2
Mon 11a	Cloudy	40°4° (likely 36°2° to 43°6°)	38°3°	0%	3 mph5 km/h from S, gusts 4 mph6 km/h	82%	55%	3
Mon 12p	Cloudy	44°7° (likely 39°4° to 47°8°)	42°6°	0%	3 mph5 km/h from S, gusts 6 mph10 km/h	74%	49%	4
Mon 1p	Partly sunny	47°8° (likely 42°6° to 49°9°)	46°8°	0%	3 mph5 km/h from S, gusts 7 mph11 km/h	68%	52%	4
Mon 2p	Mostly sunny	48°9° (likely 44°7° to 51°11°)	46°8°	0%	5 mph8 km/h from SSW, gusts 8 mph12 km/h	64%	40%	4
Mon 3p	Mostly sunny	50°10° (likely 45°7° to 52°11°)	48°9°	0%	5 mph8 km/h from SSW, gusts 8 mph14 km/h	60%	35%	4
Mon 4p	Mostly sunny	51°11° (likely 45°7° to 54°12°)	51°11°	0%	5 mph8 km/h from S, gusts 9 mph15 km/h	56%	19%	3

Days ahead

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

Today, Oct 24. Cloudy. High 50°10°, low 28°−2°. Typical 53°12° / 20°−7°. Dry. Forecasts agree.
1. Evening
  6 PM–midnight
  Mostly cloudy, 43°6°
  Dry
2. Overnight
  midnight–6 AM
  Cloudy, 31°−1°
  Dry
Official NWS forecast
Today: Mostly sunny, with a high near 50. East wind around 9 mph.
Tonight: Mostly cloudy. Low around 28, with temperatures rising to around 31 overnight. North northeast wind 3 to 9 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
48°9°–50°10°
Low, likely
27°−3°–32°0°
Typical high / low
53°12° / 20°−7°
Wind
9 mph14 km/h, gusts 15 mph24 km/h
UV peak
4
Tomorrow, Oct 25. Cloudy. High 50°10°, low 30°−1°. Typical 52°11° / 19°−7°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 30°−1°
  Dry
2. Afternoon
  noon–6 PM
  Showers, 49°9°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 44°7°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 32°0°
  Dry
Official NWS forecast
Day: Isolated rain and snow showers after 10am. Mostly cloudy, with a high near 50. North wind around 6 mph. Chance of precipitation is 20%.
Night: Mostly cloudy, with a low around 30. East northeast wind 2 to 7 mph.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
45°7°–52°11°
Low, likely
28°−2°–31°−1°
Typical high / low
52°11° / 19°−7°
Wind
8 mph13 km/h, gusts 13 mph21 km/h
UV peak
4
Monday, Oct 26. Cloudy. High 53°12°, low 29°−2°. Typical 52°11° / 19°−7°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 32°0°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 51°11°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 44°7°
  Dry
4. Overnight
  midnight–6 AM
  Drizzle, 36°2°
  40% chance · 0.05 in1.3 mm
Official NWS forecast
Day: Mostly sunny, with a high near 53. South southeast wind 1 to 6 mph.
Night: A chance of rain and snow showers after midnight. Partly cloudy, with a low around 29. South wind 5 to 8 mph. Chance of precipitation is 40%.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
47°8°–54°12°
Low, likely
25°−4°–34°1°
Typical high / low
52°11° / 19°−7°
Wind
12 mph19 km/h
UV peak
4
Tuesday, Oct 27. Drizzle. High 49°9°, low 23°−5°. Typical 51°11° / 18°−8°. Rain 0.05 in1.3 mm, 20% chance. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 33°1°
  30% chance
2. Afternoon
  noon–6 PM
  Sunny, 46°8°
  Dry
3. Evening
  6 PM–midnight
  Clear, 39°4°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 30°−1°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of rain and snow showers before noon. Mostly sunny, with a high near 49. West wind 8 to 20 mph, with gusts as high as 31 mph. Chance of precipitation is 20%.
Night: Partly cloudy, with a low around 23.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
44°7°–49°9°
Low, likely
23°−5°–35°2°
Typical high / low
51°11° / 18°−8°
Wind
27 mph43 km/h, gusts 33 mph53 km/h
UV peak
4
Wednesday, Oct 28. Partly sunny. High 53°12°, low 27°−3°. Typical 51°11° / 18°−8°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 30°−1°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 50°10°
  Dry
3. Evening
  6 PM–midnight
  Clear, 42°6°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 32°0°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 53.
Night: Partly cloudy, with a low around 27.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
49°9°–53°12°
Low, likely
21°−6°–36°2°
Typical high / low
51°11° / 18°−8°
Wind
12 mph19 km/h, gusts 23 mph37 km/h
UV peak
4
Thursday, Oct 29. Mostly cloudy. High 56°13°, low 32°0°. Typical 50°10° / 18°−8°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 32°0°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 53°12°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 46°8°
  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 56.
Night: Mostly cloudy, with a low around 32.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
52°11°–56°13°
Low, likely
25°−4°–36°2°
Typical high / low
50°10° / 18°−8°
Wind
15 mph23 km/h, gusts 25 mph40 km/h
UV peak
3
Friday, Oct 30. Showers. High 55°13°, low 30°−1°. Typical 50°10° / 17°−8°. Rain 0.08 in2 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Partly sunny, 38°3°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 50°10°
  20% chance · 0.02 in0.5 mm
3. Evening
  6 PM–midnight
  Cloudy, 45°7°
  20% chance · 0.05 in1.3 mm
4. Overnight
  midnight–6 AM
  Cloudy, 37°3°
  30% chance · 0.6 in1.5 cm
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of rain showers. Partly sunny, with a high near 55.
Night: A chance of rain showers before 3am, then a slight chance of rain and snow showers. Mostly cloudy, with a low around 30.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
46°8°–55°13°
Low, likely
30°−1°–39°4°
Typical high / low
50°10° / 17°−8°
Wind
22 mph35 km/h
UV peak
3
Saturday, Oct 31. Cloudy. High 43°6°, low 30°−1°. Typical 49°9° / 17°−8°. Rain 0.15 in3.8 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 36°2°
  30% chance · 0.3 in0.6 cm
2. Afternoon
  noon–6 PM
  Cloudy, 41°5°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 37°3°
  20% chance · 0.02 in0.4 mm
4. Overnight
  midnight–6 AM
  Clear, 26°−3°
  20% chance
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
37°3°–48°9°
Low, likely
18°−8°–36°2°
Typical high / low
49°9° / 17°−8°
Wind
18 mph28 km/h, gusts 24 mph39 km/h
UV peak
3
Sunday, Nov 1. Partly sunny. High 41°5°, low 27°−3°. Typical 49°9° / 17°−8°. Rain 0.04 in1 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 28°−2°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 41°5°
  Dry
3. Evening
  6 PM–midnight
  Clear, 34°1°
  20% chance
4. Overnight
  midnight–6 AM
  Clear, 24°−4°
  30% chance
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
33°1°–46°8°
Low, likely
11°−12°–36°2°
Typical high / low
49°9° / 17°−8°
Wind
25 mph40 km/h, gusts 32 mph52 km/h
UV peak
4
Monday, Nov 2. Cloudy. High 40°4°, low 25°−4°. Typical 48°9° / 16°−9°. Rain 0.02 in0.5 mm, 30% chance. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 26°−4°
  20% chance
2. Afternoon
  noon–6 PM
  Drizzle, 39°4°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 34°1°
  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
38°3°–41°5°
Low, likely
7°−14°–31°−1°
Typical high / low
48°9° / 16°−9°
Wind
14 mph22 km/h, gusts 22 mph36 km/h
UV peak
2

10 days15 days30 days

The outlook

Today
Dry, high 50°, low 28°.
Tomorrow
Dry, high 50°, low 30°.
Monday
Dry, high 53°, low 29°, warming up.
Rest of week
Mostly dry, highs 40–56°.

Want the meteorologists’ reasoning? Read the NWS forecast discussion (RIW) (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

Green River (WY-UT-CO) below Fontenelle Dam

1.4 mi

Below flood stage

Level: 11.2 ft
Flow: 697 cfs

Forecast peak 11.3 ft Sat 5 PM

Reading from Sat 3 PM · NWS gauge page

Green River (WY-UT-CO) near La Barge

14 mi

Below flood stage

Level: 5.2 ft
Flow: 929 cfs

Forecast peak 5.2 ft Sat 5 PM

Reading from Sat 3 PM · NWS gauge page

Fontenelle Creek near Herschler Ranch

19 mi

Below flood stage

Level: 5.2 ft
Flow: 24 cfs

Forecast peak 5.2 ft Sat 5 PM

Reading from Sat 2:45 PM · NWS gauge page

For your home

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

Heating this week

About 76% less heating than a typical week.

This week 51Typical 211

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 41
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 25 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 32°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?

Fontenelle Dam · official normals 1991–2020 · records 1963–2026

Oct 24, today vs a typical year

Today’s expected high is 3°2° colder than typical.

Last 7 days vs normal

On average 10°5° warmer than normal (daily mean temperature).

+7°+4°SunOct 18
+9°+5°MonOct 19
+14°+8°TueOct 20
—WedOct 21
—ThuOct 22
—FriOct 23
—SatOct 24

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

Sun & moon

Sun

Daylight: 10 h 41 min; Losing 2 min 35 s a day; shortest Dec 21, 1 h 34 min less
Golden hour: 5:45–6:42 PM; Morning 7:25–8:22 AM
Blue hour: 6:42–6:53 PM; Morning 7:14–7:25 AM; first light 7:14 AM

Stars tonight? Fair

Mostly clear 9 PM–3 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

98% lit · growing

Today: sets 6:00 AM · rises 5:24 PM
Full moon: Oct 25
New moon: Nov 9

Looking north from Fontenelle. The highest point on the skyline is about 15,700 ft, 89 mi away.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.

Fontenelle, WY weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Green River (WY-UT-CO) below Fontenelle Dam

Green River (WY-UT-CO) near La Barge

Fontenelle Creek near Herschler Ranch

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? Fair

Moon