Updated October 2026
Hacklebarney State Park: Weather by Month and When to Go
Hacklebarney State Park is a state park in New Jersey. Average highs range from 39°F in January to 86°F in July.
Average highs sit between 60°F and 80°F in April through May and September through October. They run above 80°F in June through August and below 60°F in November through March. The figures are NOAA climate normals for 1991–2020, measured at a weather station 8.7 miles from the park.
Warmest average high
86°F
July
Coldest average low
21°F
January
Most precipitation
5.2 in
August
Longest days
14.9 h
June
Hacklebarney State Park weather by month
| Month | Average high | Average low | Precipitation | Daylight |
|---|---|---|---|---|
| January | 39°F | 21°F | 3.2 in | 9.4 h |
| February | 43°F | 22°F | 2.2 in | 10.4 h |
| March | 51°F | 30°F | 3.9 in | 11.7 h |
| April | 63°F | 39°F | 3.6 in | 13.1 h |
| May | 73°F | 48°F | 3.5 in | 14.3 h |
| June | 81°F | 58°F | 4.2 in | 14.9 h |
| July | 86°F | 63°F | 4.9 in | 14.7 h |
| August | 84°F | 61°F | 5.2 in | 13.6 h |
| September | 78°F | 54°F | 3.8 in | 12.3 h |
| October | 66°F | 42°F | 3.7 in | 10.9 h |
| November | 55°F | 33°F | 3.4 in | 9.7 h |
| December | 44°F | 26°F | 3.9 in | 9.1 h |
Temperature and precipitation figures are NOAA climate normals for 1991–2020 from station USW00054785, the nearest station with a complete set of temperature normals, 8.7 miles from the park. Conditions in the park can differ from the station's, most of all where the two sit at different elevations. Daylight is calculated for the park's latitude at the middle of each month.
What the averages show
- Temperature. July is the warmest month, with an average high of 86°F and an average low of 63°F. January is the coldest month, with an average low of 21°F and an average high of 39°F.
- Precipitation. August is the wettest month, averaging 5.2 inches of precipitation, and February is the driest, at 2.2 inches. An average year brings about 45.5 inches in total.
- Snowfall. The station has no snowfall normal, so snowfall is left out of the table. That is a gap in the station's record, not a sign that it never snows here.
- Daylight. Days run from about 9.1 hours of daylight in December to 14.9 hours in June.
Camping, trails, maps and fees
Whether Hacklebarney State Park has camping or cabins, where its trails run, when it opens and what it charges are all published by the agency that runs the park. Its official page is the place to check before a trip.
Official Hacklebarney State Park page
For the forecast rather than the averages, the National Weather Service issues a point forecast for the park's location.
National Weather Service forecast for Hacklebarney State Park
Where to stay near Hacklebarney State Park
Hotels, cabins and vacation rentals near Hacklebarney State Park, with live availability and prices.
Top-rated places to stay near Hacklebarney State Park
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Frequently Asked Questions
July is the warmest month, with an average high of 86°F and an average low of 63°F. January is the coldest month, with an average low of 21°F and an average high of 39°F. These are NOAA 1991–2020 climate normals from a weather station 8.7 miles from the park.
Average highs sit between 60°F and 80°F in April through May and September through October. They run above 80°F in June through August and below 60°F in November through March.
August is the wettest month, averaging 5.2 inches of precipitation, and February is the driest, at 2.2 inches. An average year brings about 45.5 inches in total. The station has no snowfall normal, so no snowfall figure is available.
Days run from about 9.1 hours of daylight in December to 14.9 hours in June. The hours are calculated for the park's latitude.
Nearest National Park Service sites
- Morristown National Historical Park10 miles away
- Thomas Edison National Historical Park26 miles away
- Delaware Water Gap National Recreation Area29 miles away
Nearby state parks
- Hopatcong State Park13 miles away
- Cheesequake State Park32 miles away
- Nockamixon State Park33 miles away · Pennsylvania
- Wawayanda State Park34 miles away
Distances are measured in a straight line from the park, so the drive is longer.
Sources: NOAA NCEI U.S. Climate Normals 1991–2020; USGS Protected Areas Database for location; the official New Jersey state park listing for the park's name.