The climate in Juliustown sits close to the middle of U.S. towns
The coldest hours of a January night bottom out at 25° on average. A year here swings 63° from midwinter lows to midsummer highs. Its yearly precipitation tops that of 69% of U.S. towns. Garden planting can start around April 15; autumn frost returns near October 29.
A year in Juliustown at a glance
Each month’s typical high and low, and what it brings.
What stands out about Juliustown’s climate
Compared with towns across the U.S., with Juliustown’s place in New Jersey beside it.
What a year in Juliustown feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 196 frost-free days a year
In half of years the last 32° night comes by April 15 and the first by October 29. Frost and day counts come from NOAA’s station at Philadelphia/mt Holly Wfo, NJ, 8 miles from the town’s center, at about the same height.
The 2023 USDA map puts Juliustown’s center in zone 7a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 5°. 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 25 inches of snow a winter
Snow, measured at Philadelphia/mt Holly Wfo, NJ, falls mostly in January. Precipitation (rain plus melted snow) adds up to 47 inches a year; July is the wettest month and February the driest. Rain or snow falls on about 143 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Juliustown
84% of the work is heating. Months averaging under 55° run from November 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 Philadelphia/mt Holly Wfo, NJ.
Living with Juliustown’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
196 frost-free days in zone 7a. The last frost comes by Apr 15 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 29.
Months with highs of 62–84° and lows of 40° or more: April, May, June, September and October.
Parks & trails →Of the yearly building losses FEMA expects in Juliustown from natural hazards, river flooding is the largest share (58%); heat waves, cold waves, winter storms and ice storms together are 7%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Juliustown and its neighbors
Every town next door is within a degree of Juliustown in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Juliustown’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 |
|---|---|---|---|---|
| Juliustown, NJ | 25° | 87° | 47" | 25" |
| Fort Thomas, KY | 24° | 87° | 45" | 23" |
| Charleston, WV | 25° | 87° | 46" | 32" |
| Forestville, OH | 23° | 86° | 45" | 23" |
| Great Falls, VA | 26° | 87° | 44" | 21" |
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 Juliustown 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 Juliustown compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Juliustown’s place among New Jersey’s.
Juliustown weather by month
Highs, lows and precipitation from NOAA’s grid at Juliustown’s center; snow, wet days and snow on the ground from Philadelphia/mt Holly Wfo, NJ. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 42° | 25° | 3.4" | 8.4" | 13 | 6 | 26° – 41° |
| February | 45° | 26° | 2.9" | 6.1" | 12 | 10 | 25° – 42° |
| March | 53° | 33° | 4.0" | 5.9" | 12 | 3 | 37° – 51° |
| April | 65° | 41° | 3.7" | 0.0" | 13 | 0 | 49° – 57° |
| May | 74° | 51° | 3.9" | 0.0" | 14 | 0 | 58° – 68° |
| June | 83° | 60° | 4.4" | 0.0" | 12 | 0 | 68° – 76° |
| July | 87° | 66° | 4.9" | 0.0" | 12 | 0 | 72° – 80° |
| August | 85° | 64° | 4.6" | 0.0" | 12 | 0 | 71° – 78° |
| September | 79° | 58° | 3.9" | 0.0" | 9 | 0 | 65° – 72° |
| October | 67° | 46° | 3.9" | 0.1" | 10 | 0 | 52° – 63° |
| November | 56° | 36° | 3.2" | 0.5" | 11 | 0 | 41° – 51° |
| December | 47° | 30° | 4.2" | 3.8" | 13 | 3 | 30° – 50° |
| Year | 65° | 45° | 46.8" | 24.8" | 143 | 22 |
How much a month can swing
A normal is an average. December swings the most: from 1991 to 2020 its average ranged from 30° to 50°. September is the most reliable, staying within 7°.
Where Juliustown’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 Juliustown’s center.
- Snow: Philadelphia/mt Holly Wfo, NJ.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Philadelphia/mt Holly Wfo, NJ, 8 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 Juliustown’s climate
What is the weather like in Juliustown?
A typical July afternoon reaches 87°, a January night drops to 25°, and about 25 inches of snow falls in a normal winter. Milder January nights than 62% of U.S. towns; hotter July afternoons than 63% of U.S. towns.
How cold does it get in Juliustown in winter?
January nights average 25°. About 111 nights a year reach 32° or below. In the coldest January of the last 30 years the month averaged 26°.
How much snow does Juliustown get?
About 25 inches in a normal winter at Philadelphia/mt Holly Wfo, NJ, most of it in January, with snow on the ground about 22 days a year.
How hot does it get in Juliustown?
July, with a typical high of 87° and a low of 66°. About 22 days a year reach 90° (Philadelphia/mt Holly Wfo, NJ).
When is the first and last frost in Juliustown?
In half of years the last spring frost (32°) comes by April 15 and the first fall frost by October 29, about 196 frost-free days, at Philadelphia/mt Holly Wfo, NJ.
What growing zone is Juliustown in?
Zone 7a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 5°.
What is the best time of year to visit Juliustown?
By one simple rule (highs of 62–84° and lows of 40° or more), April, May, June, September and October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Juliustown 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 Juliustown.
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.