Mount Marcy

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Mount Marcy in the Adirondacks mountain range, New York State, USA.  Photo taken from Mount Haystack, looking across Panther Gorge.

Today’s Forecast:

66°F
Current Temperature
Mostly Cloudy
Station: KSLK
Observed at: 7:35 pm
Wind: 0 mph | Humidity: 83%
Tonight:Mostly cloudy, with a low around 52. Southwest wind around 12 mph.
Sunday:A slight chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 64. Southwest wind 5 to 8 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
Sunday Night:A slight chance of showers and thunderstorms before 7pm. Mostly cloudy, with a low around 54. Southwest wind around 8 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.

Today’s Report:

🥾 Hiking

Use Caution
  47 /100

Use Caution for hiking. High near 64°F. Low rain risk (21%). Light wind (8 mph). Slight chance of thunderstorms.

  • Temp: Favorable conditions
  • Rain: Favorable conditions
  • Wind: Favorable conditions
  • Thunderstorm: Marginal weather factor
Tomorrow's Outlook:
Not Recommended 18/100

Camping

Use Caution
  47 /100

Use Caution for camping. High near 64°F. Low rain risk (21%). Light wind (8 mph). Slight chance of thunderstorms.

  • Temp: Favorable conditions
  • Rain: Favorable conditions
  • Wind: Favorable conditions
  • Thunderstorm: Marginal weather factor
Tomorrow's Outlook:
Not Recommended 18/100

🎪 Outdoor Events / Activities

Use Caution
  47 /100

Use Caution for outdoor events / activities. High near 64°F. Risk of rain later today (21%). Light wind (8 mph). Slight chance of thunderstorms.

  • Temp: Favorable conditions
  • Rain: Marginal weather factor
  • Wind: Favorable conditions
  • Thunderstorm: Marginal weather factor
Tomorrow's Outlook:
Not Recommended 17/100

About Mount Marcy

Mount Marcy is a New York destination for New York’s highest summit, long approaches, and severe exposed weather.

Make the Most of a Mount Marcy Day

Match the route, launch, facility, or turnaround time to precipitation, wind, temperature, visibility, water conditions, snow or ice, and seasonal access. Keep a shorter or more sheltered alternative ready.

Weather Tips for Mount Marcy

  • Check official access notices, alerts, trail or road conditions, and local forecasts before leaving.
  • Turn around before exposed ridges, cliffs, overlooks, or open ground become unsafe in thunder, high wind, ice, or poor visibility.
  • Bring layers, water, navigation, sun protection, and traction or flotation appropriate to the season and activity.
  • Allow extra time for traffic, limited winter daylight, lake-effect snow, freeze-thaw mud, and seasonal facility schedules.

Nearby Towns and Areas

This page can also be useful when planning outdoor time near:

  • Adirondack Loj
  • Heart Lake
  • Van Hoevenberg Trail
  • Lake Colden
  • Keene Valley

Plan Around the Conditions

Choose the safest version of a Mount Marcy day by matching the activity to current wind, precipitation, temperature, visibility, water or snow conditions, access, and daylight.

7-Day Forecast for Mount Marcy

66°F
Current Temperature
Mostly Cloudy
Station: KSLK
Observed at: 7:35 pm
Wind: 0 mph | Humidity: 83%
Sun
64° 54°
18%
Mon
61° 54°
78%
Tue
59° 53°
91%
Wed
56° 52°
81%
Thu
58° 52°
63%
Fri
61° 54°
35%
Sat
63° --°
38%

7-Day High Temperature Trend

64° Sun 61° Mon 59° Tue 56° Wed 58° Thu 61° Fri 63° Sat

7-Day Low Temperature Trend

54° Sun 54° Mon 53° Tue 52° Wed 52° Thu 54° Fri 50° Sat

📊 7-Day Outdoor Outlook

Good Fair Poor 47 Sun 47 Mon 22 Tue 22 Wed 23 Thu 47 Fri 47 Sat
Forecast data from the National Weather Service  |  Last Updated: July 25, 2026 7:56 pm CDT

Mount Marcy Weather by Season

Winter

Winter at Mount Marcy brings cold, shorter daylight, and periodic snow or ice. Snow and ice can support the listed winter activities, but conditions and access must be confirmed locally.

Spring

Spring is changeable, with rain, mud, snowmelt, rising water, and lingering ice in shaded or elevated terrain. Lower routes and developed facilities generally become usable before exposed, backcountry, or high-elevation areas.

Summer

Summer usually provides the broadest access, but heat, humidity, thunderstorms, crowds, and occasional wildfire smoke can alter plans. Start exposed outings early and keep a weather-safe turnaround point.

Fall

Fall brings cooler air, foliage crowds, shorter daylight, and increasing wind. Early snow or ice can reach northern and elevated areas while lower valleys and coastal destinations remain milder.

Key Climate Data Points

  • Annual average temperature: around 35–42°F in nearby valleys and colder at elevation, using the relevant local and elevation context.
  • Annual snowfall: often 80–150+ inches in high terrain, with wind loading and major elevation variation.
  • Warmest months: July and August are normally warmest.
  • Coolest months: January is typically coolest, with February similarly cold in northern and elevated areas.
  • Wettest season: precipitation is distributed through the year, with late spring through summer often wettest from rain and thunderstorms.
  • Driest season: no season is reliably dry statewide; early fall often provides the most stable outdoor windows.
  • Best outdoor window: June through October for warm-season access, with midwinter best only where established winter recreation is supported.