Photo: Chamberednautilus · CC BY-SA 4.0The climate in Granville sits close to the middle of U.S. towns
The depth of winter brings overnight lows near 20°. Compared with 1901–2000, the average now sits 1.1° higher. The frost-free window for a garden runs roughly April 29 to October 16.
A year in Granville at a glance
Each month’s typical high and low, and what it brings.
What stands out about Granville’s climate
Compared with towns across the U.S., with Granville’s place in Ohio beside it.
What a year in Granville feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 167 frost-free days a year
In half of years the last 32° night comes by April 29 and the first by October 16. Frost and day counts come from NOAA’s station at Newark Wtr Wks, OH, 5 miles from the town’s center, 140 ft lower.
The 2023 USDA map puts Granville’s center in zone 6a: the coldest night of a typical winter, averaged over 1991–2020, reaches about −7°. 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 17 inches of snow a winter
Snow, measured at Buckeye Lake 1 N, OH, falls mostly in February. Precipitation (rain plus melted snow) adds up to 42 inches a year; July is the wettest month and February the driest. Rain or snow falls on about 147 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Granville
89% 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 Newark Wtr Wks, OH.
Living with Granville’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
167 frost-free days in zone 6a. The last frost comes by Apr 29 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 16.
Months with highs of 62–84° and lows of 40° or more: May, June, August, September and October. 4.4 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Granville from natural hazards, river flooding is the largest share (67%); heat waves, cold waves, winter storms and ice storms together are 8%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Granville and its neighbors
Every town next door is within a degree of Granville in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Granville’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 |
|---|---|---|---|---|
| Granville, OH | 20° | 84° | 42" | 17" |
| Muncie, IN | 20° | 84° | 42" | 19" |
| Paris, IL | 20° | 85° | 43" | 19" |
| Wytheville, VA | 24° | 83° | 42" | 18" |
| Huntingdon, PA | 21° | 85° | 40" | 26" |
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 Granville averaged 1.1° warmer than the 1900s. The biggest change is in December (+2.7°).
A smaller shift than in 71% 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 Granville compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Granville’s place among Ohio’s.
Granville weather by month
Highs, lows and precipitation from NOAA’s grid at Granville’s center; snow, wet days and snow on the ground from Buckeye Lake 1 N, OH. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | 30-yr range |
|---|---|---|---|---|---|---|
| January | 36° | 20° | 2.9" | 5.4" | 15 | 20° – 39° |
| February | 40° | 22° | 2.4" | 6.2" | 13 | 18° – 41° |
| March | 50° | 30° | 3.5" | 2.1" | 13 | 34° – 52° |
| April | 63° | 39° | 3.9" | 0.1" | 14 | 45° – 57° |
| May | 73° | 49° | 4.3" | 0.0" | 15 | 54° – 69° |
| June | 81° | 59° | 4.4" | 0.0" | 12 | 65° – 72° |
| July | 84° | 62° | 4.5" | 0.0" | 11 | 68° – 77° |
| August | 83° | 60° | 3.7" | 0.0" | 10 | 67° – 76° |
| September | 77° | 53° | 3.2" | 0.0" | 9 | 61° – 69° |
| October | 65° | 42° | 2.9" | 0.0" | 11 | 50° – 59° |
| November | 52° | 33° | 2.9" | 0.3" | 11 | 35° – 48° |
| December | 41° | 25° | 3.1" | 2.9" | 14 | 22° – 44° |
| Year | 62° | 41° | 41.6" | 17.0" | 147 |
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 41°. June is the most reliable, staying within 7°.
Where Granville’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 Granville’s center.
- Snow: Buckeye Lake 1 N, OH.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Newark Wtr Wks, OH, 5 miles from the town’s center, 140 ft lower; 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 Granville’s climate
What is the weather like in Granville?
A typical July afternoon reaches 84°, a January night drops to 20°, and about 17 inches of snow falls in a normal winter. Colder January nights than 59% of U.S. towns; cooler July afternoons than 59% of U.S. towns.
How cold does it get in Granville in winter?
January nights average 20°. About 129 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 20°.
How much snow does Granville get?
About 17 inches in a normal winter at Buckeye Lake 1 N, OH, most of it in February.
How hot does it get in Granville?
July, with a typical high of 84° and a low of 62°. About 13 days a year reach 90° (Newark Wtr Wks, OH).
When is the first and last frost in Granville?
In half of years the last spring frost (32°) comes by April 29 and the first fall frost by October 16, about 167 frost-free days, at Newark Wtr Wks, OH.
What growing zone is Granville in?
Zone 6a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −7°.
What is the best time of year to visit Granville?
By one simple rule (highs of 62–84° and lows of 40° or more), May, June, August, September and October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Granville getting warmer?
Yes: 1991–2020 averaged 1.1° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 71% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Granville.
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.