What is today's weather forecast for Mammoth, WY?

Today's forecast for Mammoth shows a low of 40 degrees Fahrenheit. Rain showers likely before 5am, then rain likely, possibly mixed with snow showers.

What is the 7-day weather forecast for Mammoth, WY?

The 7-day forecast for Mammoth shows highs from 35 to 45 degrees and lows from 21 to 40 degrees Fahrenheit. Expect precipitation on 8 days with chances of 20% or higher.

Will it rain in Mammoth, WY this week?

Yes, rain is possible in Mammoth this week. Precipitation chances: Tuesday (60% chance), Wednesday (80% chance), Thursday (80% chance), Friday (90% chance), Saturday (40% chance), Sunday (50% chance), Monday (50% chance), Tuesday (50% chance).

How accurate is the Mammoth weather forecast?

WeatherForYou provides highly accurate Mammoth forecasts using National Weather Service data and current conditions from the nearest available weather stations, often miles closer than regional airports, for the most precise local forecasts.

Mammoth, WY Weather Forecast and Current Conditions

WEATHER ALERTS - Winter Storm Warning

Current Conditions From Nearby Local Station

Switch to Metric Units

39°F
Feels Like 31°F

Humidity 75% Dew Point 32°F Wind 14 MPH Gusts 33 Barometer N/A

Report from a MADIS/MESONET weather station 0.3 mi. E of central Mammoth
at 4:15 AM Wed, Dec 17, 2025

Point Forecast at a Glance

TueDec 16

60%

WedDec 17

80%

ThuDec 18

70%

FriDec 19

90%

SatDec 20

40%

SunDec 21

40%

MonDec 22

50%

Jump to detailed forecast ↓

7-Day Temperature Trend

Week Ahead Summary

High temperatures remain relatively stable through the week, ranging from 35°F to 45°F. Unsettled weather expected with wintry mix likely on at least 7 days.

Climate Context

This week's forecast shows temperatures running 14°F above the historical average for December. Normal highs for this period are around 27°F with lows around 7°F.

This Date in Weather History

1924 - A severe icestorm struck central Illinois. It coated the ground with nearly two inches of glaze at Springfield. The storm caused 21 million dollars damage along with much hardship. Ice was on the trees until the 4th of January, and electricity was not restored until January 10th.

Mammoth, WY 7 Day Weather Forecast Details

Tuesday Dec 16

Night: Rain showers likely before 5am, then rain likely, possibly mixed with snow showers. Snow level 6700 feet. Mostly cloudy, with a low around 40. Breezy, with a south southwest wind around 22 mph, with gusts as high as 34 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

Wednesday Dec 17

Day: Rain and snow showers before noon, then a chance of snow showers between noon and 2pm. Temperature rising to near 43 by 11am, then falling to around 31 during the remainder of the day. Windy, with a south southwest wind 20 to 29 mph becoming west northwest in the afternoon. Winds could gust as high as 47 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

Night: Partly cloudy, with a low around 21. Breezy, with a west northwest wind 8 to 17 mph, with gusts as high as 26 mph.

Thursday Dec 18

Day: Snow showers likely after 11am. Mostly cloudy, with a high near 37. South southwest wind 8 to 14 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

Night: Snow showers before 11pm, then rain likely, possibly mixed with snow showers. Low around 29. Breezy, with a south southwest wind 15 to 18 mph, with gusts as high as 32 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

Friday Dec 19

Day: Rain, possibly mixed with snow showers before 2pm, then rain showers between 2pm and 5pm, then rain, possibly mixed with snow showers after 5pm. Snow level 6500 feet. High near 43. Breezy, with a southwest wind 17 to 22 mph, with gusts as high as 38 mph. Chance of precipitation is 90%.

Night: Rain, possibly mixed with snow showers, becoming all snow after 8pm. Low around 24. Breezy, with a west southwest wind 10 to 17 mph, with gusts as high as 34 mph. Chance of precipitation is 90%.

Saturday Dec 20

Day: A 40 percent chance of snow showers, mainly before 11am. Mostly sunny, with a high near 35.

Night: Mostly cloudy, with a low around 23.

Sunday Dec 21

Day: A 40 percent chance of snow showers, mainly after 11am. Partly sunny, with a high near 41.

Night: A chance of rain and snow showers. Snow level 6100 feet rising to 7000 feet after midnight. Mostly cloudy, with a low around 36.

Monday Dec 22

Day: Rain likely, possibly mixed with snow showers. Mostly cloudy, with a high near 45. Breezy.

Night: A chance of rain and snow showers. Snow level 6600 feet lowering to 6000 feet after midnight . Mostly cloudy, with a low around 35. Breezy.

Tuesday Dec 23

Day: A chance of rain and snow showers. Snow level rising to 6300 feet in the afternoon. Mostly cloudy, with a high near 44.

About Mammoth, WY

Mammoth is a census-designated place in Park County, Wyoming, United States, in Yellowstone National Park. As of the 2010 census, its population was 263.

Content from Wikipedia, licensed under CC BY-SA 3.0.

How We Provide Better Local Weather

Current conditions: We use the nearest available station to your location - including professional MESONET/MADIS and local weather stations - often miles closer than regional airports.

Forecasts: National Weather Service point forecasts predict for your specific area, not broad regional zones, making them far more relevant to your location.

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