Photo: Zeete · CC BY-SA 4.0Hibernia gets more rain and snow than 82% of U.S. towns: 49 inches of precipitation a year
Expect July afternoons of about 83°. The seasons are far apart: from a winter night to a summer afternoon the average spans 64°. In July, afternoons here are cooler than in 69% of U.S. towns. Tender plants can go out after about April 25; in half of years the first frost comes by October 17.
A year in Hibernia at a glance
Each month’s typical high and low, and what it brings.
What stands out about Hibernia’s climate
Compared with towns across the U.S., with Hibernia’s place in New Jersey beside it.
What a year in Hibernia feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 174 frost-free days a year
In half of years the last 32° night comes by April 25 and the first by October 17. Frost and day counts come from NOAA’s station at Charlotteburg Reservoir, NJ, 7 miles from the town’s center, at about the same height.
The 2023 USDA map puts Hibernia’s center in zone 6b: the coldest night of a typical winter, averaged over 1991–2020, reaches about −2°. Plant labels use the zone; frost dates tell you when to plant.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
About 28 inches of snow a winter
Snow, measured at Oak Ridge Reservoir, NJ, falls mostly in January. Precipitation (rain plus melted snow) adds up to 49 inches a year; June is the wettest month and February the driest. Rain or snow falls on about 115 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Hibernia
91% of the work is heating, so the furnace matters far more than the air conditioner. Months averaging under 55° run from October through April.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Charlotteburg Reservoir, NJ.
Living with Hibernia’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
174 frost-free days in zone 6b. The last frost comes by Apr 25 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Oct 17.
Months with highs of 62–84° and lows of 40° or more: May, June, July, August, September and October. 11 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Hibernia from natural hazards, river flooding is the largest share (73%); heat waves, cold waves, winter storms and ice storms together are 8%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Hibernia and its neighbors
Every town next door is within a degree of Hibernia in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Hibernia’s, farther away
TownRatings’ own comparison of NOAA 1991–2020 normals, not a NOAA product: places of 5,000+ at least 150 miles away, one per state, closest on January low, July high, precipitation and snow.
| Town | Jan. low | July high | Precip. | Snow |
|---|---|---|---|---|
| Hibernia, NJ | 19° | 83° | 49" | 28" |
| Rehoboth, MA | 20° | 83° | 50" | 26" |
| Cranston, RI | 20° | 83° | 49" | 37" |
| Putnam, CT | 17° | 82° | 49" | 39" |
| Connellsville, PA | 21° | 84° | 46" | 24" |
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value. Snow and frost-free days come from the nearest weather station, so neighbors often share them.
Warmer than it used to be
The last 30 years in Hibernia averaged 2.0° warmer than the 1900s. The biggest change is in December (+3.5°).
A bigger shift than in 89% of U.S. towns.
Change by month
The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.
How Hibernia compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Hibernia’s place among New Jersey’s.
Hibernia weather by month
Highs, lows and precipitation from NOAA’s grid at Hibernia’s center; snow, wet days and snow on the ground from Oak Ridge Reservoir, NJ. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | 30-yr range |
|---|---|---|---|---|---|---|
| January | 36° | 19° | 3.6" | 9.6" | 11 | 19° – 35° |
| February | 39° | 21° | 2.8" | 7.7" | 9 | 18° – 36° |
| March | 48° | 28° | 4.2" | 5.3" | 11 | 31° – 47° |
| April | 60° | 37° | 4.0" | 1.4" | 10 | 45° – 53° |
| May | 70° | 47° | 4.1" | 0.0" | 11 | 54° – 64° |
| June | 79° | 56° | 4.7" | 0.0" | 11 | 65° – 70° |
| July | 83° | 61° | 4.6" | 0.0" | 9 | 68° – 76° |
| August | 82° | 60° | 4.5" | 0.0" | 9 | 67° – 74° |
| September | 75° | 53° | 4.5" | 0.0" | 8 | 61° – 68° |
| October | 63° | 42° | 4.6" | 0.0" | 8 | 48° – 59° |
| November | 51° | 33° | 3.5" | 0.2" | 8 | 38° – 47° |
| December | 41° | 25° | 4.4" | 3.9" | 11 | 26° – 43° |
| Year | 61° | 40° | 49.4" | 28.1" | 115 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 18° to 36°. June is the most reliable, staying within 6°.
Where Hibernia’s numbers come from
Normals are 30-year averages, not a forecast. How TownRatings reads climate data →
- Temperatures and precipitation: NOAA’s gridded 1991–2020 normals for the 5 km cell at Hibernia’s center.
- Snow: Oak Ridge Reservoir, NJ.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Charlotteburg Reservoir, NJ, 7 miles from the town’s center, at about the same height; the nearest station that passes our checks for distance, height and agreement with the grid.
- Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
- Then and now: NOAA’s gridded normals for 1901–2000 at the same cell.
- Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).
Common questions about Hibernia’s climate
What is the weather like in Hibernia?
A typical July afternoon reaches 83°, a January night drops to 19°, and about 28 inches of snow falls in a normal winter. Colder January nights than 64% of U.S. towns; cooler July afternoons than 69% of U.S. towns.
How cold does it get in Hibernia in winter?
January nights average 19°. About 138 nights a year reach 32° or below and 4 reach 0° or below. In the coldest January of the last 30 years the month averaged 19°.
How much snow does Hibernia get?
About 28 inches in a normal winter at Oak Ridge Reservoir, NJ, most of it in January.
How hot does it get in Hibernia?
July, with a typical high of 83° and a low of 61°. About 10 days a year reach 90° (Charlotteburg Reservoir, NJ).
When is the first and last frost in Hibernia?
In half of years the last spring frost (32°) comes by April 25 and the first fall frost by October 17, about 174 frost-free days, at Charlotteburg Reservoir, NJ.
What growing zone is Hibernia in?
Zone 6b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −2°.
What is the best time of year to visit Hibernia?
By one simple rule (highs of 62–84° and lows of 40° or more), May, June, July, August, September and October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Hibernia getting warmer?
Yes: 1991–2020 averaged 2.0° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 89% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Hibernia.
Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.