Harriman State Park, NY

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Island Pond, in Harriman State Park

Today’s Forecast:

☁
39°F
High: 39° | Low: 30°
Current Temperature
Cloudy
Station: KSWF
Observed at: 3:45 pm CST on 11/13/26
Wind: 5 mph | Humidity: 93%
This Afternoon:A chance of rain. Cloudy. High near 38, with temperatures falling to around 36 in the afternoon. North wind around 8 mph. Chance of precipitation is 50%.
Tonight:A slight chance of rain before 7pm. Mostly cloudy. Low around 30, with temperatures rising to around 32 overnight. Northwest wind around 6 mph. Chance of precipitation is 20%.
Saturday:Mostly cloudy. High near 42, with temperatures falling to around 39 in the afternoon. Northwest wind 6 to 12 mph, with gusts as high as 22 mph.
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Today’s Report:

🥾 Hiking

Good
  72 /100

Good for hiking. High near 41°F. Low rain risk (2%). Light wind (12 mph).

  • Temp: Marginal weather factor
  • Rain: Favorable conditions
  • Wind: Favorable conditions
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Good 79/100
Good for hiking. High near 45°F. Light wind (10 mph).

⛺ Camping

Good
  73 /100

Good for camping. High near 41°F. Low rain risk (2%). Light wind (12 mph).

  • Temp: Marginal weather factor
  • Rain: Favorable conditions
  • Wind: Favorable conditions
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Good 83/100
Good for camping. High near 45°F. Light wind (10 mph).

🚲 Biking

  20 /100

Not Recommended for biking. High near 41°F. Low rain risk (2%). Light wind (12 mph). Temperatures outside comfort limits (41°F).

  • Temp: Unfavorable weather factor
  • Rain: Favorable conditions
  • Wind: Favorable conditions
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Good 70/100
Good for biking. High near 45°F. Light wind (10 mph).

About Harriman State Park

Harriman State Park is a New York destination for a large network of lakes, trails, campgrounds, scenic roads, and winter routes.

Make the Most of a Harriman State Park 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 Harriman State Park

  • 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:

  • Lake Welch
  • Seven Lakes Drive
  • Tiorati
  • Sloatsburg
  • Ramapo
  • Pine Meadow Lake

Plan Around the Conditions

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

7-Day Forecast for Harriman State Park

☁
39°F
High: 39° | Low: 30°
Current Temperature
Cloudy
Station: KSWF
Observed at: 3:45 pm CST on 11/13/26
Wind: 5 mph | Humidity: 93%
Fri 🌧
38° 30°
46%
Sat ☁
42° 33°
2%
Sun ☀
45° 32°
0%
Mon ☀
49° 30°
0%
Tue ☀
54° 34°
0%
Wed ☀
57° 34°
0%
Thu ☀
59° 36°
0%

7-Day High Temperature Trend

38° Fri 42° Sat 45° Sun 49° Mon 54° Tue 57° Wed 59° Thu

7-Day Low Temperature Trend

30° Fri 33° Sat 32° Sun 30° Mon 34° Tue 34° Wed 36° Thu

📊 7-Day Outdoor Outlook

Good Fair Poor 19 Fri 20 Sat 20 Sun 20 Mon 90 Tue 100 Wed 100 Thu
Forecast data from the National Weather Service  |  Last Updated: November 13, 2026 11:06 pm CST

Harriman State Park Weather by Season

Winter

Winter at Harriman State Park 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 48–52°F, using the relevant local and elevation context.
  • Annual snowfall: commonly 25–50 inches, with more on higher ridges.
  • 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.