Daily Winter Weather Report
Monday - December 21, 2009
| Station | Max Temp | Min Temp | Pres Temp | New Snow | Snow Depth | OC | BC | SC | Present Conditions |
| Canyon | 26 | 26 | 3 | 23 | X | Lt Snow / Calm | |||
| East Entrance | 37 | 25 | 28 | 1 | 15 | X | Lt Snow | ||
| Grant Village | 29 | 23 | 23 | Trace | 25 | X | Calm | ||
| Lake | 30 | 21 | 21 | 1.5 | 15 | X | Calm | ||
| Madison | 34 | 8 | 29 | Trace | 10 | X | Lt Snow / Calm | ||
| Mammoth | |||||||||
| Old Faithful | 33 | 24 | 27 | 2 | 16 | X | Calm | ||
| Snake River | 32 | 24 | 27 | 2 | 22 | X | Mod Snow / Calm | ||
| Tower | |||||||||
| West Entrance |
| Yellowstone National Park WebCams | |||||||
|---|---|---|---|---|---|---|---|
| Old Faithful Live | All Old Faithful | Old Faithful Static | Old Faithful VC | North Entrance | Mt Washburn | Mammoth | YVO WebCam |
AVALANCHE DANGER
The avalanche danger is rated HIGH on all wind-loaded slopes with human triggered avalanches being probable. All other slopes have a CONSIDERABLE avalanche danger.
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Yellowstone National Park Weather Forecast on 21 December 2009 by the NWS Riverton, WY Today ... Breezy. Snow in the morning...then snow likely in the afternoon. Snow accumulation around 2 to 3 inches. Highs 25°F to 31°F. Southwest winds 15 to 25 mph. Chance of snow 80%. Tonight ... Breezy. Snow likely. Snow accumulation around 2 inches. Lows 15°F to 21°F. Southwest winds 15 to 20 mph. Chance of snow 70%. Tuesday ... Cloudy. Snow likely in the morning...then chance of snow in the afternoon. Snow accumulation of 1 to 2 inches. Total snow accumulation 6 to 8 inches. Highs 21°F to 27°F. Chance of snow 70%. Tuesday Night ... Colder. Cloudy with a 50% chance of snow. Lows 7°F to 13°F. Wednesday ... Cloudy with a 50% chance of snow. Highs 13°F to 19°F. Wednesday Night ... Colder. Mostly cloudy with a 20% chance of snow. Lows -4°F to 2°F. Thursday ... Partly cloudy with a 20% chance of snow. Highs 10°F to 16°F. Wind chill readings -12°F to -22°F. Thursday Night ... Partly cloudy with a 20% chance of snow. Lows -4°F to 2°F. Christmas Day ... Partly cloudy. Highs 11°F to 17°F. Friday Night ... Partly cloudy. Lows -5°F to 1°F. Saturday ... Not as cold. Partly cloudy with a 20% chance of snow. Highs 19°F to 25°F. Saturday Night ... Partly cloudy with a 20% chance of snow. Lows -4°F to 2°F. Sunday ... Partly cloudy with a 20% chance of snow. Highs 20°F to 26°F.
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******** FOR CURRENT ROAD INFORMATION PLEASE CALL 307-344-2117********
Monday - December 21, 2009
| Road | Date Open | Admin Travel | Public Access |
| Gardiner to Mammoth | YEAR ROUND | STA | |
| Mammoth to Tower | YEAR ROUND | STR | |
| Tower to NE Entrance | YEAR ROUND | STR | |
| Beartooth Highway | CLOSED | NO | CLOSED |
| Blacktail | CLOSED | NO | CLOSED |
| Canyon to Lake | OPEN | YES | Good |
| Firehole Lake Drive | CLOSED | NO | CLOSED |
| Grant to South Entrance | OPEN | YES | Good |
| Junction to Chief Joseph Hwy | CLOSED | NO | CLOSED |
| Lake to East Entrance | 12/22 | YES | CLOSED |
| Lake to West Thumb | OPEN | YES | Good |
| Madison to Old Faithful | OPEN | YES | Good |
| Madison to West Yellowstone | OPEN | YES | Good |
| Mammoth to Norris | 12/16 rubber tracked only | YES | Rubber Tracked Only |
| Norris to Canyon | OPEN | YES | Fair |
| Norris to Madison | OPEN | YES | |
| Old Faithful to Grant | OPEN | YES | Good |
| Tower to Canyon | CLOSED | CLOSED | CLOSED |
| Virginia Cascades | CLOSED | NO | CLOSED |
NR = No Restrictions ⁄ STA = Snow Tires Advised ⁄ STR = Snow Tires Required
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Information provided by the National Weather Service and Yellowstone National Park Service
