Green River (WY-UT-CO) below Fontenelle Dam
23 mi- Level
- 11.2 ft
- Flow
- 689 cfs
Forecast peak 11.3 ft Sun 12 PM
Reading from Sun 11 AM · NWS gauge page
Observed 11:35 AM MDT at KEMM
Opal, WY weather
Overcast and 37°3°.
Today: low 30°−1° (likely 29°−2° to 30°−1°), high 47°8° (likely 45°7° to 47°8°).
Now 37°3°
Cloudy · Feels like 32°0°
- Feels like
- 32°0°
- Wind chill from 7 mph11 km/h wind · air 37°3°
- Wind
- 7 mph11 km/h
- From the east-northeast. 35–7 mph11 km/h through 12 AM
- Dew point
- 30°−1°
- Dry, static shocks likely
- UV index
- 2Low
- Moderate 1–4 PM · peak 3
Next 48 hours
4°2° warmer than this time yesterday (34°1° then, 37°3° now)
Good hours for
This afternoonUp to 47°8° by 5 PM · rain chance 20%
TonightDown to 32°0° by 4 AM · freezing, low 32°0°
Tomorrow morningUp to 40°4° by 11 AM · freezing, low 31°−1°
Tomorrow afternoonUp to 50°10° by 5 PM
Tomorrow nightDown to 33°1° by 5 AM · rain chance 10%
Tuesday morningUp to 40°4° by 11 AM · freezing, low 31°−1°
| Hour | Conditions | Temperature | Feels like | Precipitation | Wind | Humidity | Cloud cover | UV index |
|---|---|---|---|---|---|---|---|---|
| Sun 12p | Mostly cloudy | 39°4° (likely 39°4° to 40°4°) | 37°3° | 5% | 3 mph5 km/h from E | 79% | — | 2 |
| Sun 1p | Showers | 41°5° (likely 41°5° to 42°6°) | 38°3° | 20% | 5 mph8 km/h from E | 76% | — | 3 |
| Sun 2p | Showers | 44°7° (likely 44°7° to 44°7°) | 41°5° | 20% | 6 mph10 km/h from ENE | 73% | — | 3 |
| Sun 3p | Mostly cloudy | 45°7° (likely 45°7° to 45°7°) | 42°6° | 10% | 6 mph10 km/h from ENE | 72% | — | 3 |
| Sun 4p | Mostly cloudy | 46°8° (likely 45°7° to 46°8°) | 44°7° | 5% | 5 mph8 km/h from ENE | 70% | — | 2 |
| Sun 5p | Mostly cloudy | 47°8° (likely 45°7° to 47°8°) | 45°7° | 5% | 5 mph8 km/h from ENE | 68% | — | 1 |
| Sun 6p | Mostly cloudy | 45°7° (likely 44°7° to 45°7°) | 43°6° | 0% | 5 mph8 km/h from SSW | 70% | — | — |
| Sun 7p | Mostly cloudy | 43°6° (likely 42°6° to 43°6°) | 39°4° | 0% | 6 mph10 km/h from S | 76% | — | — |
| Sun 8p | Mostly cloudy | 42°6° (likely 40°4° to 42°6°) | 39°4° | 0% | 5 mph8 km/h from N | 80% | — | — |
| Sun 9p | Mostly cloudy | 40°4° (likely 39°4° to 40°4°) | 37°3° | 0% | 5 mph8 km/h from NNE | 81% | — | — |
| Sun 10p | Partly cloudy | 38°3° (likely 38°3° to 38°3°) | 36°2° | 0% | 3 mph5 km/h from NE | 85% | — | — |
| Sun 11p | Mostly cloudy | 37°3° (likely 37°3° to 37°3°) | 34°1° | 0% | 3 mph5 km/h from NNE | 87% | — | — |
| Mon 12a | Mostly cloudy | 36°2° (likely 36°2° to 36°2°) | 33°1° | 0% | 3 mph5 km/h from NE | 89% | — | — |
| Mon 1a | Mostly cloudy | 36°2° (likely 36°2° to 36°2°) | 32°0° | 0% | 5 mph8 km/h from NNE | 88% | — | — |
| Mon 2a | Mostly cloudy | 35°2° (likely 35°2° to 35°2°) | 31°−1° | 0% | 5 mph8 km/h from NNE | 91% | — | — |
| Mon 3a | Partly cloudy | 34°1° (likely 34°1° to 34°1°) | 30°−1° | 0% | 5 mph8 km/h from N | 91% | — | — |
| Mon 4a | Partly cloudy | 32°0° (likely 32°0° to 33°1°) | 27°−3° | 0% | 5 mph8 km/h from N | 92% | — | — |
| Mon 5a | Partly cloudy | 32°0° (likely 32°0° to 32°0°) | 27°−3° | 0% | 5 mph8 km/h from N | 93% | — | — |
| Mon 6a | Fog | 32°0° (likely 31°−1° to 32°0°) | 29°−2° | 0% | 3 mph5 km/h from NNE | 93% | — | — |
| Mon 7a | Fog | 31°−1° (likely 31°−1° to 31°−1°) | 28°−2° | 0% | 3 mph5 km/h from N | 92% | — | — |
| Mon 8a | Fog | 31°−1° (likely 30°−1° to 31°−1°) | 31°−1° | 0% | 2 mph3 km/h from NE | 97% | — | — |
| Mon 9a | Fog | 33°1° (likely 33°1° to 33°1°) | 33°1° | 0% | 2 mph3 km/h from NNE | 99% | — | — |
| Mon 10a | Fog | 37°3° (likely 35°2° to 37°3°) | 37°3° | 0% | 2 mph3 km/h from ENE | 93% | — | — |
| Mon 11a | Mostly cloudy | 40°4° (likely 38°3° to 40°4°) | 40°4° | 0% | 2 mph3 km/h from SE | 86% | — | — |
| Mon 12p | Partly sunny | 43°6° (likely 41°5° to 43°6°) | 41°5° | 0% | 3 mph5 km/h from SSE | 79% | — | — |
| Mon 1p | Mostly sunny | 45°7° (likely 44°7° to 45°7°) | 43°6° | 0% | 5 mph8 km/h from S | 70% | — | — |
| Mon 2p | Mostly sunny | 47°8° (likely 47°8° to 47°8°) | 44°7° | 0% | 6 mph10 km/h from S | 64% | — | — |
| Mon 3p | Mostly sunny | 48°9° (likely 48°9° to 48°9°) | 45°7° | 0% | 6 mph10 km/h from S | 58% | — | — |
| Mon 4p | Mostly sunny | 49°9° (likely 49°9° to 49°9°) | 47°8° | 0% | 6 mph10 km/h from SSE | 54% | — | — |
| Mon 5p | Mostly sunny | 50°10° (likely 49°9° to 50°10°) | 47°8° | 0% | 7 mph11 km/h from SSE | 53% | — | — |
| Mon 6p | Mostly clear | 48°9° (likely 47°8° to 48°9°) | 45°7° | 5% | 6 mph10 km/h from SSE | 56% | — | — |
| Mon 7p | Mostly clear | 46°8° (likely 44°7° to 46°8°) | 43°6° | 5% | 6 mph10 km/h from SSE | 61% | — | — |
| Mon 8p | Mostly clear | 44°7° (likely 43°6° to 44°7°) | 41°5° | 5% | 5 mph8 km/h from SSE | 66% | — | — |
| Mon 9p | Mostly clear | 41°5° (likely 41°5° to 41°5°) | 37°3° | 5% | 6 mph10 km/h from S | 69% | — | — |
| Mon 10p | Partly cloudy | 39°4° (likely 39°4° to 40°4°) | 35°2° | 5% | 6 mph10 km/h from SSW | 75% | — | — |
| Mon 11p | Mostly clear | 38°3° (likely 38°3° to 40°4°) | 32°0° | 5% | 8 mph13 km/h from SSW | 78% | — | — |
| Tue 12a | Partly cloudy | 37°3° (likely 37°3° to 39°4°) | 30°−1° | 5%, 0.01 in0.3 mm | 9 mph14 km/h from SSW | 81% | — | — |
| Tue 1a | Mostly clear | 37°3° (likely 37°3° to 37°3°) | 28°−2° | 5%, 0.01 in0.3 mm | 14 mph23 km/h from SW | 82% | — | — |
| Tue 2a | Partly cloudy | 36°2° (likely 36°2° to 36°2°) | 26°−3° | 10%, 0.01 in0.3 mm | 16 mph26 km/h from WSW | 86% | — | — |
| Tue 3a | Mostly cloudy | 34°1° (likely 34°1° to 34°1°) | 24°−4° | 10%, 0.01 in0.3 mm | 16 mph26 km/h from WSW | 88% | — | — |
| Tue 4a | Partly cloudy | 34°1° (likely 34°1° to 34°1°) | 24°−4° | 5%, 0.01 in0.3 mm | 15 mph24 km/h from WSW | 88% | — | — |
| Tue 5a | Partly cloudy | 33°1° (likely 33°1° to 33°1°) | 23°−5° | 5%, 0.01 in0.3 mm | 15 mph24 km/h from W | 88% | — | — |
| Tue 6a | Partly cloudy | 31°−1° (likely 31°−1° to 31°−1°) | 21°−6° | 0% | 15 mph24 km/h from W | 88% | — | — |
| Tue 7a | Partly cloudy | 32°0° (likely 32°0° to 32°0°) | 22°−6° | 0% | 14 mph23 km/h from W | 88% | — | — |
| Tue 8a | Partly sunny | 32°0° (likely 32°0° to 32°0°) | 23°−5° | 0% | 13 mph21 km/h from W | 91% | — | — |
| Tue 9a | Partly sunny | 32°0° (likely 32°0° to 32°0°) | 23°−5° | 0% | 13 mph21 km/h from W | 93% | — | — |
| Tue 10a | Partly sunny | 36°2° (likely 36°2° to 36°2°) | 27°−3° | 0% | 13 mph21 km/h from W | 86% | — | — |
| Tue 11a | Mostly sunny | 40°4° (likely 40°4° to 40°4°) | 32°0° | 0% | 14 mph23 km/h from W | 74% | — | — |
Days ahead
Shaded: typical range for these dates (1991–2020)
Today, Oct 25. Showers. High 47°8°, low 30°−1°. Typical 53°12° / 20°−7°. Rain 0.04 in1 mm, 20% chance. One forecast only.
Afternoon
noon–6 PM
Mostly cloudy, 47°8°Dry
Evening
6 PM–midnight
Mostly cloudy, 42°6°Dry
Overnight
midnight–6 AM
Partly cloudy, 32°0°Dry
Official NWS forecast
Today: Isolated rain showers between 1pm and 3pm. Mostly cloudy, with a high near 47. East wind around 6 mph. Chance of precipitation is 20%.
Tonight: Mostly cloudy, with a low around 30. North northeast wind around 6 mph.
One forecast onlyOnly one forecast covers this day, so there is nothing to compare against.
- High, likely
- 45°7°–47°8°
- Low, likely
- 29°−2°–30°−1°
- Typical high / low
- 53°12° / 20°−7°
- Wind
- 5 mph9 km/h
Tomorrow, Oct 26. Fog. High 50°10°, low 30°−1°. Typical 52°11° / 20°−7°. Dry. One forecast only.
Morning
6 AM–noon
Fog, 31°−1°Dry
Afternoon
noon–6 PM
Mostly sunny, 50°10°Dry
Evening
6 PM–midnight
Mostly clear, 44°7°Dry
Overnight
midnight–6 AM
Mostly cloudy, 33°1°Dry
Official NWS forecast
Day: Areas of fog before 11am. Mostly sunny, with a high near 50. East wind 2 to 7 mph.
Night: Partly cloudy, with a low around 30. Southwest wind 5 to 16 mph, with gusts as high as 24 mph.
One forecast onlyOnly one forecast covers this day, so there is nothing to compare against.
- High, likely
- 49°9°–50°10°
- Low, likely
- 30°−1°
- Typical high / low
- 52°11° / 20°−7°
- Wind
- 14 mph23 km/h
Tuesday, Oct 27. Mostly sunny. High 47°8°, low 27°−3°. Typical 52°11° / 19°−7°. Dry. One forecast only.
Morning
6 AM–noon
Partly sunny, 32°0°Dry
Official NWS forecast
Day: Sunny, with a high near 47. West wind 13 to 17 mph, with gusts as high as 28 mph.
Night: A slight chance of snow showers after midnight. Partly cloudy, with a low around 27. West wind 2 to 10 mph. Chance of precipitation is 20%.
One forecast onlyOnly one forecast covers this day, so there is nothing to compare against.
- High, likely
- 47°8°–48°9°
- Low, likely
- 27°−3°–31°−1°
- Typical high / low
- 52°11° / 19°−7°
- Wind
- 16 mph25 km/h
Wednesday, Oct 28. Partly sunny. High 49°9°, low 28°−2°. Typical 52°11° / 19°−7°. Dry. One forecast only.
Official NWS forecast
Day: Mostly sunny, with a high near 49. West wind 3 to 10 mph.
Night: Partly cloudy, with a low around 28.
One forecast onlyOnly one forecast covers this day, so there is nothing to compare against.
- High, likely
- 49°9°
- Low, likely
- 28°−2°–29°−2°
- Typical high / low
- 52°11° / 19°−7°
- Wind
- 13 mph20 km/h
Thursday, Oct 29. Mostly cloudy. High 52°11°, low 32°0°. Typical 51°11° / 19°−7°. Dry. One forecast only.
Official NWS forecast
Day: Partly sunny, with a high near 52.
Night: Mostly cloudy, with a low around 32.
One forecast onlyOnly one forecast covers this day, so there is nothing to compare against.
- High, likely
- 51°11°–52°11°
- Low, likely
- 30°−1°–32°0°
- Typical high / low
- 51°11° / 19°−7°
- Wind
- 6 mph9 km/h
Friday, Oct 30. Snow. High 50°10°, low 31°−1°. Typical 50°10° / 18°−8°. Snow 0.04 in1 mm, 30% chance. One forecast only.
Official NWS forecast
Day: A chance of rain and snow showers. Mostly cloudy, with a high near 50.
Night: A chance of rain showers. Mostly cloudy, with a low around 31.
One forecast onlyOnly one forecast covers this day, so there is nothing to compare against.
- High, likely
- 50°10°–51°11°
- Low, likely
- 31°−1°–34°1°
- Typical high / low
- 50°10° / 18°−8°
- Wind
- 6 mph9 km/h
Saturday, Oct 31. Snow. High 49°9°, low 30°−1°. Typical 50°10° / 18°−8°. Snow 0.08 in2 mm, 30% chance. One forecast only.
Official NWS forecast
Day: A chance of rain and snow showers. Partly sunny, with a high near 49.
Night: A chance of rain and snow showers. Mostly cloudy, with a low around 30.
One forecast onlyOnly one forecast covers this day, so there is nothing to compare against.
- High, likely
- 49°9°–50°10°
- Low, likely
- 30°−1°–37°3°
- Typical high / low
- 50°10° / 18°−8°
- Wind
- 8 mph14 km/h
The outlook
Today
Dry, high 47°, low 30°.
Tomorrow
Dry, high 50°, low 30°, warming up.
Tuesday
Dry, high 47°, low 27°, cooling off.
Rest of week
Mostly dry, highs 49–52°.
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
Rivers
NOAA river gauges within 25 mi
Below flood stage
Fontenelle Creek near Herschler Ranch
23 mi- Level
- 5.2 ft
- Flow
- 24 cfs
Forecast peak 5.2 ft Sun 12 PM
Reading from Sun 10:45 AM · NWS gauge page
For your home
What this week’s weather means for heating, cooling, pipes and fresh air.
Heating this week
About 75% less heating than a typical week.
This week 51Typical 209
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 27 hours are near freezing and damp, when outdoor units defrost more often.
Comfort
Dry air outside (dew point 30°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?
Kemmerer 2n · official normals 1991–2020 · records 1990–2026
Oct 25, today vs a typical year
Today’s expected high is 6°3° colder than typical.
- Normal high / low
- 53°12° / 20°−7°
- Forecast high / low
- 47°8° / 30°−1°
- Record high
- 68°20° in 2005
- Record low
- −13°−25° in 2020
Last 7 days vs normal
- —MonOct 19
- —TueOct 20
- —WedOct 21
- —ThuOct 22
- —FriOct 23
- —SatOct 24
- —SunOct 25
Opal weather by month: normals, records, snow and freeze dates
Sun & moon
Sun
Sunrise 7:45 AM, sunset 6:24 PM.
- Daylight
- 10 h 39 min
- Losing 2 min 35 s a day; shortest Dec 21, 1 h 31 min less
- Golden hour
- 5:45–6:42 PM
- Morning 7:27–8:24 AM
- Blue hour
- 6:42–6:53 PM
- Morning 7:16–7:27 AM; first light 7:16 AM
Stars tonight? Unknown
Cloud forecast not available for tonight.
Moon
Full moon
100% lit · growing
- Today
- sets 7:14 AM · rises 5:52 PM
- Full moon
- Today, 10:12 PM
- New moon
- Nov 9
