Great Swamp National Wildlife Refuge, NJ
Today’s Forecast:
Today’s Report:
Hiking
Not Recommended for hiking. High near 43°F. Rain forecast later today (100%). Light wind (15 mph). Thunderstorms forecast or possible.
- Temp: Marginal weather factor
- Rain: Marginal weather factor
- Wind: Favorable conditions
- Thunderstorm: Unfavorable weather factor
Biking
Not Recommended for biking. High near 43°F. Rain forecast later today (100%). Breezy winds (15 mph). Thunderstorms forecast or possible. Temperatures outside comfort limits (43°F).
- Temp: Unfavorable weather factor
- Rain: Marginal weather factor
- Wind: Marginal weather factor
- Thunderstorm: Unfavorable weather factor
Outdoor Events / Activities
Not Recommended for outdoor events / activities. High near 43°F. Rain forecast later today (100%). Breezy winds (15 mph). Thunderstorms forecast or possible. Temperatures outside comfort limits (43°F).
- Temp: Unfavorable weather factor
- Rain: Marginal weather factor
- Wind: Marginal weather factor
- Thunderstorm: Unfavorable weather factor
About Great Swamp National Wildlife Refuge
From short visits to full-day plans, Great Swamp National Wildlife Refuge brings together wetland boardwalks, observation blinds, woodland trails, refuge roads, and wildlife areas.
Planning an Outing at Great Swamp National Wildlife Refuge
Check conditions again shortly before departure, especially when the plan depends on a launch, road, campground, guarded beach, or scheduled event.
Weather Tips for Great Swamp National Wildlife Refuge
- Read current refuge or park notices because wildlife protection, flooding, hunts, maintenance, or storms can change access.
- Stay on designated routes and distinguish walking-only trails from roads or areas open to bicycles.
- Wetlands amplify mosquitoes, humidity, mud, and heat; bring repellent, water, and sun protection.
- After heavy rain, expect standing water, soft surfaces, and reduced visibility in dense vegetation.
Nearby Towns and Areas
Use this forecast as practical context for outdoor plans near:
- Basking Ridge
- Harding Township
- Chatham
- Madison
- Lord Stirling Park
- Passaic River headwaters
Adjust the Day to the Forecast
Choose the version of the outing that fits current wind, visibility, precipitation, temperature, water conditions, access, and daylight.
7-Day Forecast for Great Swamp National Wildlife Refuge
Great Swamp National Wildlife Refuge Weather by Season
Winter
Winter at Great Swamp National Wildlife Refuge 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. Seasonal wildlife activity and water management can alter the best viewing areas and permitted routes.
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.