In Camp Dennison, July heat, January chill and rainfall all sit near the middle of U.S. towns
Deep winter brings January lows near 23°. Warming shows here too: 1.3° more than in 1901–2000, led by December. Garden planting can start around April 23; autumn frost returns near October 18.
A year in Camp Dennison at a glance
Each month’s typical high and low, and what it brings.
What stands out about Camp Dennison’s climate
Compared with towns across the U.S., with Camp Dennison’s place in Ohio beside it.
What a year in Camp Dennison feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 177 frost-free days a year
In half of years the last 32° night comes by April 23 and the first by October 18. Frost and day counts come from NOAA’s station at Milford, OH, 0.9 miles from the town’s center, at about the same height.
The 2023 USDA map puts Camp Dennison’s center in zone 6b: the coldest night of a typical winter, averaged over 1991–2020, reaches about −1°. 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 14 inches of snow a winter
Snow, measured at Kings Mills, OH, falls mostly in January. Precipitation (rain plus melted snow) adds up to 45 inches a year; May is the wettest month and February the driest. Rain or snow falls on about 116 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Camp Dennison
83% 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 Milford, OH.
Living with Camp Dennison’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
177 frost-free days in zone 6b. The last frost comes by Apr 23 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 18.
Months with highs of 62–84° and lows of 40° or more: April, May, June, September and October. 1.1 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Camp Dennison from natural hazards, river flooding is the largest share (77%); heat waves, cold waves, winter storms and ice storms together are 9%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Camp Dennison and its neighbors
Every town next door is within a degree of Camp Dennison in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Camp Dennison’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 |
|---|---|---|---|---|
| Camp Dennison, OH | 23° | 87° | 45" | 14" |
| Robinson, IL | 22° | 87° | 45" | 12" |
| Olney, MD | 25° | 86° | 46" | 16" |
| Millville, NJ | 25° | 87° | 46" | 12" |
| Smyrna, DE | 26° | 87° | 45" | 13" |
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 Camp Dennison averaged 1.3° warmer than the 1900s. The biggest change is in December (+2.5°).
A smaller shift than in 57% 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 Camp Dennison compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Camp Dennison’s place among Ohio’s.
Camp Dennison weather by month
Highs, lows and precipitation from NOAA’s grid at Camp Dennison’s center; snow, wet days and snow on the ground from Kings Mills, OH. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 39° | 23° | 3.3" | 5.2" | 10 | 8 | 23° – 42° |
| February | 44° | 26° | 3.0" | 3.7" | 9 | 6 | 22° – 44° |
| March | 53° | 33° | 3.9" | 2.8" | 10 | 2 | 37° – 56° |
| April | 66° | 43° | 4.5" | 0.1" | 12 | 0 | 49° – 60° |
| May | 75° | 52° | 4.9" | 0.0" | 13 | 0 | 58° – 72° |
| June | 83° | 61° | 4.7" | 0.0" | 11 | 0 | 68° – 75° |
| July | 87° | 65° | 4.2" | 0.0" | 9 | 0 | 71° – 80° |
| August | 86° | 63° | 3.4" | 0.0" | 8 | 0 | 70° – 80° |
| September | 80° | 56° | 3.2" | 0.0" | 7 | 0 | 64° – 74° |
| October | 67° | 44° | 3.2" | 0.2" | 8 | 0 | 52° – 62° |
| November | 54° | 35° | 3.1" | 0.5" | 9 | 0 | 38° – 50° |
| December | 44° | 28° | 3.5" | 1.9" | 10 | 4 | 24° – 46° |
| Year | 65° | 44° | 44.7" | 14.4" | 116 | 20 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 22° to 44°. June is the most reliable, staying within 7°.
Where Camp Dennison’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 Camp Dennison’s center.
- Snow: Kings Mills, OH.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Milford, OH, 0.9 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 Camp Dennison’s climate
What is the weather like in Camp Dennison?
A typical July afternoon reaches 87°, a January night drops to 23°, and about 14 inches of snow falls in a normal winter. Milder January nights than 56% of U.S. towns; hotter July afternoons than 59% of U.S. towns.
How cold does it get in Camp Dennison in winter?
January nights average 23°. About 116 nights a year reach 32° or below and 3 reach 0° or below. In the coldest January of the last 30 years the month averaged 23°.
How much snow does Camp Dennison get?
About 14 inches in a normal winter at Kings Mills, OH, most of it in January, with snow on the ground about 20 days a year.
How hot does it get in Camp Dennison?
July, with a typical high of 87° and a low of 65°. About 28 days a year reach 90° (Milford, OH).
When is the first and last frost in Camp Dennison?
In half of years the last spring frost (32°) comes by April 23 and the first fall frost by October 18, about 177 frost-free days, at Milford, OH.
What growing zone is Camp Dennison in?
Zone 6b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −1°.
What is the best time of year to visit Camp Dennison?
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 Camp Dennison getting warmer?
Yes: 1991–2020 averaged 1.3° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 57% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Camp Dennison.
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.