Watchung Reservation, NJ

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Outdoor scenery at Watchung Reservation
Watchung Reservation — photo by Bryan Housel, CC BY-SA 3.0, via Wikimedia Commons.

Today’s Forecast:

☁
46°F
High: 48° | Low: 42°
Current Temperature
Cloudy
Station: KMMU
Observed at: 7:45 pm CST on 11/12/26
Wind: 7 mph | Humidity: %
Tonight:Rain showers before midnight, then rain. Cloudy, with a low around 42. Northeast wind 9 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Friday:Rain. Cloudy, with a high near 44. North wind 8 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night:A chance of rain before 10pm. Mostly cloudy, with a low around 34. North wind around 7 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
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Today’s Report:

🥾 Hiking

Use Caution
  42 /100

Use Caution for hiking. High near 44°F. Rain forecast later today (97%). Light wind (16 mph).

  • Temp: Marginal weather factor
  • Rain: Marginal weather factor
  • Wind: Favorable conditions
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Good 80/100
Good for hiking. High near 46°F. Light wind (10 mph).

🚲 Biking

Not Recommended
  12 /100

Not Recommended for biking. High near 44°F. Rain forecast later today (97%). Breezy winds (16 mph). Temperatures outside comfort limits (44°F).

  • Temp: Unfavorable weather factor
  • Rain: Marginal weather factor
  • Wind: Marginal weather factor
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Good 72/100
Good for biking. High near 46°F. Light wind (10 mph).

🎪 Outdoor Events / Activities

Not Recommended
  12 /100

Not Recommended for outdoor events / activities. High near 44°F. Rain forecast later today (97%). Breezy winds (16 mph). Temperatures outside comfort limits (44°F).

  • Temp: Unfavorable weather factor
  • Rain: Marginal weather factor
  • Wind: Marginal weather factor
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Not Recommended 20/100
Not Recommended for outdoor events / activities. High near 46°F. Light wind (10 mph). Temperatures outside comfort limits (46°F).

About Watchung Reservation

A forecast for Watchung Reservation helps visitors make better use of wooded trails, Lake Surprise, the Deserted Village, bridle paths, picnic areas, and a nature center.

Planning an Outing at Watchung Reservation

Use the calmest weather window for the main objective and save sheltered trails, developed areas, or a shorter turnaround for later.

Weather Tips for Watchung Reservation

  • Check trail, road, facility, parking, and event notices before leaving.
  • Start active plans early when heat or thunderstorms are forecast.
  • After heavy rain, expect mud, slick surfaces, swollen streams, and temporary closures.
  • Carry water, sun protection, navigation, and a layer for rapid wind or temperature changes.

Nearby Towns and Areas

Use this forecast as practical context for outdoor plans near:

  • Mountainside
  • Berkeley Heights
  • Scotch Plains
  • Summit
  • Trailside Nature Center
  • Surprise Lake

Adjust the Day to the Forecast

Recheck observations before committing, then adjust the route, launch, or schedule when real conditions differ from the forecast.

7-Day Forecast for Watchung Reservation

☁
46°F
High: 48° | Low: 42°
Current Temperature
Cloudy
Station: KMMU
Observed at: 7:45 pm CST on 11/12/26
Wind: 7 mph | Humidity: %
Fri 🌧
44° 34°
97%
Sat ⛅
46° 34°
1%
Sun ⛅
49° 35°
0%
Mon ☀
50° 32°
0%
Tue ☀
54° 35°
0%
Wed ☀
59° 37°
0%
Thu ☀
61° --°
1%

7-Day High Temperature Trend

44° Fri 46° Sat 49° Sun 50° Mon 54° Tue 59° Wed 61° Thu

7-Day Low Temperature Trend

34° Fri 34° Sat 35° Sun 32° Mon 35° Tue 37° Wed 50° Thu

📊 7-Day Outdoor Outlook

Good Fair Poor 18 Fri 20 Sat 20 Sun 70 Mon 90 Tue 100 Wed 100 Thu
Forecast data from the National Weather Service  |  Last Updated: November 12, 2026 10:30 pm CST

Weather by Season

Winter

Winter at Watchung Reservation is generally quiet, but cold fronts can bring snow, freezing rain, gusty wind, and slick shaded surfaces. Check hours and road conditions before traveling.

Spring

Spring weather changes quickly, with rain, mud, pollen, and rising temperatures affecting trails and events. Allow surfaces time to drain after heavy storms.

Summer

Summer brings heat, humidity, and frequent afternoon thunderstorms. Plan active portions early, carry water, and move away from exposed areas when thunder is heard.

Fall

Fall usually provides comfortable outdoor weather, with foliage crowds, hunting-season awareness, shorter daylight, and occasional tropical rainfall or early freezes.

Key Climate Data Points

  • Annual average temperature: about 51–56°F using the nearest practical inland climate station.
  • Annual snowfall: generally about 15–30 inches, varying with elevation and distance from the coast.
  • Warmest months: July and August are normally warmest.
  • Coolest months: January is typically coolest.
  • Wettest season: Summer is often wettest because of thunderstorms and tropical moisture, although precipitation is distributed through the year.
  • Driest season: Fall is often driest, particularly from October into November.
  • Best outdoor window: Spring and fall usually provide the best balance of comfortable temperatures and reliable access.